toluene

methylbenzene

108-88-3

toluol

Phenylmethane

methacide

methylbenzol

Benzene, methyl-

antisal 1a

Toluen

tolu-sol

Methane, phenyl-

Tolueen

Toluolo

phenyl methane

1-Methylbenzene

monomethyl benzene

RCRA waste number U220

Tolueno

methyl-Benzene

Caswell No. 859

p-toluene

NCI-C07272

CP 25

CCRIS 2366

HSDB 131

NSC 406333

UN 1294

4-methylbenzene

Benzene, methyl

EINECS 203-625-9

UNII-3FPU23BG52

EPA Pesticide Chemical Code 080601

NSC-406333

3FPU23BG52

DTXSID7021360

CHEBI:17578

AI3-02261

TOLUENE (RING-D5)

CHEMBL9113

DTXCID501360

EC 203-625-9

Toluene, anhydrous

MFCD00008512

NCGC00090939-02

TOLUENE (IARC)

TOLUENE [IARC]

TOLUENE (MART.)

TOLUENE [MART.]

TOLUENE (USP-RS)

TOLUENE [USP-RS]

Tolueen [Dutch]

Toluen [Czech]

Toluene, analytical standard

Tolueno [Spanish]

Toluolo [Italian]

methyl benzene

para-toluene

Methyl benzol

Toluene, ACS reagent, >=99.5%

Toluene 1000 microg/mL in Methanol

CAS-108-88-3

RAMIPRIL IMPURITY G (EP IMPURITY)

RAMIPRIL IMPURITY G [EP IMPURITY]

PHME

UN1294

RCRA waste no. U220

methylbenzenes

Dracyl

phenyl-methane

toluene solvent

2-methylbenzene

toluene-

Methylbenzene; Toluene; Ramipril Imp. G (EP); Ramipril Impurity G

MePh

2-methyl benzene

4-methyl-benzene

Toluene ACS Grade

Toluene HPLC grade

Methylbenzene, 9CI

Toluene (Technical)

Toluene, for HPLC

PhCH3

Toluene, ACS reagent

Toluene, HPLC Grade

4i7k

TOLUENE [HSDB]

TOLUENE [INCI]

Toluene, 99.5%

TOLUENE [MI]

CP 25 (SOLVENT)

Toluene, Environmental Grade

Toluene, Semiconductor Grade

Toluene, LR, >=99%

C6H5CH3

TOLUENE [GREEN BOOK]

WLN: 1R

BIDD:ER0288

Toluene, anhydrous, 99.8%

Toluene, ASTM, 99.5%

Toluene, p.a., 99.5%

GTPL5481

Toluene, AR, >=99.5%

Toluene, for HPLC, 99.9%

Toluene, LR, rectified, 99%

CHEBI:38975

DTXSID00184990

DTXSID50175878

Toluene, HPLC grade, 99.8%

Toluene, Spectrophotometric Grade

Toluene 10 microg/mL in Methanol

Toluene, LR, sulfur free, 99%

Toluene, AR, rectified, 99.5%

Toluene, technical grade, 95.0%

BCP16202

Toluene, for HPLC, >=99.8%

Toluene, for HPLC, >=99.9%

Toluene, histology grade, practical

Toluene, PRA grade, >=99.8%

Toluene 100 microg/mL in Methanol

Tox21_111042

Tox21_201224

BDBM50008558

NSC406333

Toluene, purification grade, 99.8%

AKOS015840411

DB11558

MCULE-4817136027

Toluene, anhydrous, (water < 50ppm)

Toluene, puriss., >=99.5% (GC)

Toluene, SAJ first grade, >=99.0%

NCGC00090939-01

NCGC00090939-03

NCGC00258776-01

Toluene [UN1294] [Flammable liquid]

Toluene, JIS special grade, >=99.5%

Toluene, Laboratory Reagent, >=99.3%

Toluene, for HPLC, >=99.7% (GC)

Toluene, UV HPLC spectroscopic, 99.5%

Toluene, anhydrous, ZerO2(TM), 99.8%

DB-309420

NS00008096

T0260

Toluene, suitable for determination of dioxins

C01455

Q15779

Toluene, suitable for scintillation, >=99.7%

Toluene liquid density, NIST(R) SRM(R) 211d

A801937

SR-01000944565

Toluene, ACS spectrophotometric grade, >=99.5%

SR-01000944565-1

Toluene, p.a., ACS reagent, reag. ISO, 99.5%

InChI=1/C7H8/c1-7-5-3-2-4-6-7/h2-6H,1H

D5191 Vapor Pressure - 7.1kPa (1.03 psi), 10 x 10 mL

Toluene, p.a., ACS reagent, reag. ISO, reag. Ph. Eur., 99.5%

Toluene, absolute, over molecular sieve (H2O <=0.005%), >=99.7% (GC)

Toluene, Pharmaceutical Secondary Standard; Certified Reference Material

Residual Solvent - Toluene, Pharmaceutical Secondary Standard; Certified Reference Material

Toluene, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., >=99.7% (GC)

25013-04-1

The Henry's Law constant for toluene is 6.64X10-3 atm-cu m/mole(1). This Henry's Law constant indicates that toluene is expected to volatilize from water surfaces(2). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(2) is estimated as 2.9 hours(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(2) is estimated as 3.8 days(SRC). Toluene's Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). Toluene is expected to volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 28.4 mm Hg(3). The air-water interface equilibrium partitioning coefficient for toluene, at a concentration of 0.47 mg/L, has been reported to be 0.223, 0.226, 0.273, and 0.336 at 26.9, 31.9, 36.9, and 41.9 deg C, respectively(4). A first-order volatilization rate calculated for toluene from water using an inverse reactive simulation was reported as 6.62X10-6/sec(5). The volatilization half-life of toluene from a water column of one meter depth was estimated to be 5.18 hours(6). Toluene was reported to have a disappearance half-life of <2 days due to volatilization in two different soil types, a Captina silt loam and a McLaurin sandy loam(7).
Literature: (1) Mackay D et al; Environ Sci Technol 13: 333-6 (1979) (2) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 15-1 to 15-29 (1990) (3) Daubert TE, Danner RP; Physical and Thermodynamic Properties of Pure Chemicals Data Compilation. Washington, DC: Taylor and Francis (1989) (4) Cheng W-H et al; Atmos Environ 37: 4807-4815 (2003) (5) Keefe SH et al; Environ Sci Technol 38: 2209-2216 (2004) (6) Mackay D, Leinonen PJ; Environ Sci Technol 9: 1178-80 (1975) (7) Anderson TA et al; J Environ Qual 20:420-4 (1991)

The Koc of toluene was reported as 178 in a sandy soil(1) and as 37 (Wendover silty loam), 160 (Grimsby silt loam), 160 (Vaudreil sandy loam) and 46 (sandy soil)(2). The Koc of toluene in lake sediment was measured as 166(3). According to a classification scheme(4), these measured Koc values suggest that toluene is expected to have high to moderate mobility in soil.
Literature: (1) Wilson JT et al; J Environ Qual 10: 501-6 (1981) (2) Nathwani JS, Phillips CR; Chemosphere 6: 157-62 (1977) (3) Kan AT et al; Environ Sci Technol 32: 892-902 (1998) (4) Swann RL et al; Res Rev 85: 17-28 (1983)
Literature: #In association with clay minerals, toluene's adsorption is inversely proportional to the pH of the soil. Approximately 40-70% of toluene applied to the surface of sandy soils is volatilized.
Literature: IARC. Monographs on the Evaluation of the Carcinogenic Risk of Chemicals to Humans. Geneva: World Health Organization, International Agency for Research on Cancer, 1972-PRESENT. (Multivolume work). Available at: http://monographs.iarc.fr/ENG/Classification/index.php, p. V47: 90 (1989)

O-XYLENE

1,2-Dimethylbenzene

1,2-Xylene

95-47-6

Ortho-Xylene

Xylene

o-Xylol

o-Methyltoluene

2-Xylene

o-Dimethylbenzene

Benzene, 1,2-dimethyl-

3,4-Xylene

1,2-Dimethylbenzol

o-Xylenes

Xylene, o-

Dimethylbenzene

Benzene, o-dimethyl-

2-Methyltoluene

orthoxylene

NSC 60920

Benzene, dimethyl-

DTXSID3021807

CHEBI:28063

NSC-60920

o-Xylene-dimethyl-13C2

P-XYLENE-A,A,A-D3

1,2-XYLOL

BENZENE,1,2-DIMETHYL

CHEMBL45005

DTXCID501807

Z2474E14QP

MFCD00008519

68411-84-7

CCRIS 905

HSDB 134

EINECS 202-422-2

UNII-Z2474E14QP

dimethyl benzene

dimethyl-benzene

AI3-08197

Xylenes ACS

Xylene, o-isomer

1,2-dimethyl-benzene

o-Xylene, HPLC Grade

O-XYLENE [MI]

2-XYLENE [HSDB]

bmse000526

EC 202-422-2

o-Xylene, anhydrous, 97%

o-Xylene, analytical standard

o-Xylene, for HPLC, 98%

WLN: 1R B1

o-Xylene, for synthesis, 98%

DTXSID10178042

188l

o-Xylene, Spectrophotometric Grade

NSC60920

o-Xylene 10 microg/mL in Methanol

Tox21_200658

BDBM50008560

STL264206

o-Xylene 100 microg/mL in Methanol

AKOS000269058

o-Xylene, reagent grade, >=98.0%

MCULE-2208963094

CAS-95-47-6

NCGC00091662-01

NCGC00091662-02

NCGC00091662-03

NCGC00258212-01

o-Xylene, spectrophotometric grade, 98%

BS-20678

o-Xylene [UN1307] [Flammable liquid]

o-Xylene, SAJ special grade, >=98.5%

DB-257286

NS00007915

S0650

X0012

EN300-25617

o-Xylene, puriss. p.a., >=99.0% (GC)

C07212

Q2988108

F1908-0112

InChI=1/C8H10/c1-7-5-3-4-6-8(7)2/h3-6H,1-2H

o-Xylene, Pharmaceutical Secondary Standard; Certified Reference Material

Xy

The Henry's Law constant for 2-xylene has been measured as 5.18X10-3 atm-cu m/mole(1). This Henry's Law constant indicates that 2-xylene is expected to volatilize rapidly from water surfaces(2). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(2) is estimated as 3.2 hours(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(2) is estimated as 4.1 days(SRC). 2-Xylene's Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). 2-Xylene is expected to volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 6.65 mm Hg at 25 deg C(3).
Literature: (1) Sanemasa I et al; Bull Chem Soc Jpn 18: 1111-230 (1982) (2) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 15-1 to 15-29 (1990) (3) Daubert TE, Danner RP; Physical and Thermodynamic Properties of Pure Chemicals: Data Compilation. Design Institute for Physical Property Data, American Institute of Chemical Engineers. New York, NY: Hemisphere Pub Corp (1996)

Koc values measured for 2-xylene in various soils (% organic matter) were 24 in Wendover silty clay (16.2%), 26 in Vaudreil sand loam (10.0%), 68 in St. Thomas sand (3.1%), and 138 in Grimsby silt loam (1.0%)(1). Batch adsorption tests, using three solid sandy aquifer materials gave a Koc of 129(2). The Koc for 2-xylene in surface sediments collected from the central Tamar estuary in the UK was 25.4(3). The Koc values for 2-xylene in two river sediments (% organic matter 6.5-16.9 wt%) was 209 and 251, respectively(4). According to a classification scheme(5), these measured Koc values suggests that 2-xylene is expected to have very high to moderate mobility in soil. Using OECD Guideline 121 (estimating Koc via HPLC), the Koc of 2-xylene was estimated to be 537(6). Concentration enhancement has been observed for 2-xylene in a dune-infiltration project on the Rhine River(7); however, no 2-xylene reached groundwater under a rapid infiltration site(8). The log Koc for 2-xylene in coal sediment (% organic matter 52 wt%) was 2.40(4).
Literature: (1) Nathwani JS, Phillip CR; Chemosphere 6: 157-62 (1977) (2) Abdul AS, Gibson TL, Rai DN; S Haz Waste Haz Mat 4: 211-22 (1987) (3) Vowles PD, Mantoura RFC; Chemosphere 16: 109-16 (1987) (4) Kopinke FD et al; Environ Sci Technol 29: 941-50 (1995) (5) Swann RL et al; Res Rev 85: 17-28 (1983) (6) ECHA; Search for Chemicals. o-Xylene (CAS 95-47-6) Registered Substances Dossier. European Chemical Agency. Available from, as of June 20, 2015: http://echa.europa.eu/ (7) Piet GJ et al; Quality of groundwater. Van Dwjvenbooden W et al, eds; Studies in Environ Sci 17: 557-64 (1981) (8) Tomson MB et al; Water Res 15: 1109-16 (1981)

1,2,4-TRIMETHYLBENZENE

95-63-6

Pseudocumene

Pseudocumol

Psi-cumene

as-Trimethylbenzene

1,3,4-Trimethylbenzene

Benzene, 1,2,4-trimethyl-

Uns-trimethylbenzene

1,2,5-Trimethylbenzene

Asymmetrical trimethylbenzene

.psi.-Cumene

pseudo-cumene

1,2,4-trimethyl-benzene

1,2,4-Trimethyl benzene

Benzene, 1,2,5-trimethyl-

NSC 65600

DTXSID6021402

CHEBI:34039

NSC-65600

34X0W8052F

DTXCID701402

CAS-95-63-6

1,2,4-Trimethylbenzene, analytical standard

HSDB 5293

EINECS 202-436-9

pseudo cumene

AI3-03976

CCRIS 8146

UNII-34X0W8052F

1,4-Trimethylbenzene

PSUEDO-CUMENE

laquo Psiraquo -Cumene

METHYL-P-XYLENE

Benzene,2,4-trimethyl-

PSEUDOCUMENE [MI]

1,2,5-trimethyl-benzene

1,2, 4-Trimethylbenzene

EC 202-436-9

BIDD:ER0682

TRIMETHYLBENZENE [INCI]

1.2.4-TRIMETHYLBENZENE

CHEMBL1797280

WLN: 1R B1 D1

1,2,4-Trimethylbenzene, 98%

21 - VOCs (Perkin Elmer tubes)

NSC65600

TRIMETHYLBENZENE, 1,2,4-

Tox21_200518

Tox21_300049

MFCD00008527

STL268868

06C - Benzene, Toluene and Xylenes

AKOS000120059

1,2,4-Trimethylbenzene (pseudocumene)

MCULE-5935311187

1,2,4-TRIMETHYLBENZENE [HSDB]

NCGC00247891-01

NCGC00247891-02

NCGC00254118-01

NCGC00258072-01

PS-11947

1,2,4-Trimethylbenzene (ACD/Name 4.0)

NS00006467

S0662

T0469

EN300-20076

A937622

Q376994

1,2,4-Trimethylbenzene 100 microg/mL in Methanol

F0001-2275

Z104476700

1,2,4-Trimethylbenzene, certified reference material, TraceCERT(R)

InChI=1/C9H12/c1-7-4-5-8(2)9(3)6-7/h4-6H,1-3H

XBZ

The Henry's Law constant for 1,2,4-trimethylbenzene was measured as 6.16X10-3 atm-cu m/mol(1). This value indicates that 1,2,4-trimethylbenzene will volatilize from moist soil and water surfaces(2). Based on this Henry's Law constant, the estimated volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(2) is approximately 3 hours(SRC). The estimated volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(2) is approximately 4 days(SRC). Volatilization of 1,2,4-trimethylbenzene from dry soil surfaces is expected(SRC) based upon its vapor pressure of 2.1 mm Hg(3).
Literature: (1) Sanemasa I et al; Bull Chem Soc Jpn 55: 1054-62 (1982) (2) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington DC: Amer Chem Soc pp. 15-1 to 15-29 (1990) (3) Chao J et al; J Phys Chem Ref Data 12: 1033-63 (1983)
Literature: #Complete removal of 1,2,4-trimethylbenzene (at 0.068 ug/mL soil extract) from sandy loam soil samples contaminated with jet fuel was reported within 5 days; sterile samples with 1,2,4-trimethylbenzene at 0.057 ug/mL soil extract also showed complete removal of this compound within 5 days, probably through evaporation(1). Jet fuel added to water (and then stirred) had an average volatilization ratio (volatilization rate constant of the compound/oxygen reaeration rate constant) of 0.59 for JP-4 fuel and a ratio of 0.45 for JP-8 fuel for the 1,2,4-trimethylbenzene component, indicating high volatility of this compound from water(2).
Literature: (1) Dean-Ross D; Bull Environ Contam Toxicol 51: 596-99 (1993) (2) Smith JH, Harper JC; pp. 336-53 in Proceed 12th Conf on Environ Toxicol 3, 4, and 5. Nov. 1981. Airforce Aerospace Medical Research Lab. Ohio (1982)

A Koc value of 537 was measured for 1,2,4-trimethylbenzene in a German soil (80.5% sand 12.3% silt, 7.2% clay, 2.48% organic carbon). According to a suggested classification scheme(2), this Koc value suggests that 1,2,4-trimethylbenzene will have low mobility in soil(SRC).
Literature: (1) Brusseau ML; Environ Toxicol Chem 12: 1835-46 (1993) (2) Swann RL et al; Res Rev 85: 23 (1983)

1,2,4,5-TETRAMETHYLBENZENE

Durene

95-93-2

Durol

Benzene, 1,2,4,5-tetramethyl-

p-Xylene, 2,5-dimethyl-

1,2,4,5-tetramethyl-benzene

DTXSID1029124

CHEBI:38978

181426CFYB

NSC-6770

DTXCID309124

CAS-95-93-2

NSC 6770

EINECS 202-465-7

Duren

UNII-181426CFYB

AI3-25182

CCRIS 8660

1,2,4,5-Tetramethylbenzene; p-Xylene, 2,5-dimethyl- (7CI); 1,2,4,5-Tetramethylbenzene; Durene; Durol; NSC 6770

2,5-dimethyl-p-xylene

DURENE [MI]

NCIMech_000514

BIDD:ER0685

1,2,4,5-tetramethyl benzene

(2,4,5-trimethylphenyl)methyl

CHEMBL1797134

NSC6770

WLN: 1R B1 D1 E1

DTXSID901307890

Tox21_201920

Tox21_303511

1,2,4,5-TETRAMETHLYBENZENE

MFCD00008528

STL268879

1,2,4,5-Tetramethylbenzene, 98%

AKOS000119934

MCULE-6922205692

NCGC00249135-01

NCGC00257264-01

NCGC00259469-01

LS-13806

DB-038211

NS00078869

T0140

T0714

1,2,4,5-TETRAMETHYLBENZENE (DURENE)

EN300-19396

Q907919

W-100151

1,2,4,5-Tetramethylbenzene 10 microg/mL in Cyclohexane

F0001-2285

Z104473710

1,2,4,5-Tetramethylbenzene, Standard for quantitative NMR, TraceCERT(R)

InChI=1/C10H14/c1-7-5-9(3)10(4)6-8(7)2/h5-6H,1-4H

15220-27-6

CUMENE

Isopropylbenzene

98-82-8

2-Phenylpropane

(1-Methylethyl)benzene

Cumol

Benzene, (1-methylethyl)-

Isopropylbenzol

Cumeen

Isopropilbenzene

Isopropylbenzeen

2-Fenilpropano

2-Fenyl-propaan

Isopropyl-benzol

Benzene, isopropyl

Propane, 2-phenyl

(propan-2-yl)benzene

Propan-2-ylbenzene

RCRA waste number U055

i-propylbenzene

(Methylethyl)benzene

NSC 8776

Isopropylbenzen

HSDB 172

ISOPROPYL BENZENE

isopropyl-benzene

EINECS 202-704-5

UNII-8Q54S3XE7K

Benzene, isopropyl-

8Q54S3XE7K

CCRIS 9455

Propane, 2-phenyl-

DTXSID1021827

CHEBI:34656

AI3-04630

NSC-8776

MFCD00008881

68333-89-1

DTXCID101827

EC 202-704-5

101316-43-2

CUMENE (IARC)

CUMENE [IARC]

CUMENE (USP-RS)

CUMENE [USP-RS]

Cumeen [Dutch]

Phenol bottoms

Isopropylbenzeen [Dutch]

Benzene-1,2,3,4,5-d5,6-[1-(methyl-d3)ethyl-1,2,2,2-d4]-

2-Fenilpropano [Italian]

2-Fenyl-propaan [Dutch]

Isopropyl-benzol [German]

Isopropilbenzene [Italian]

2-Phenyl propane

4-isopropylbenzene

Benzene, 1-methylethyl-

UN1918

RCRA waste no. U055

cumen

(1-methylethyl)benzene (cumene)

2-phenyl-propane

I-Propyl-Benzene

Benzene, i-propyl-

68411-37-0

Propane-2-yl-benzene

1-Methylethyl-Benzene

Benzene,isopropyl cumol

Cumene, 98%

Isopropyl-benzol(german)

(1-methylethyl)-benzene

CUMENE [HSDB]

CUMENE [MI]

Iso-propylbenzene (cumene)

1-Methylethylbenzene, 9CI

Cumene, analytical standard

Isopropylbenzene [UN1918] [Flammable liquid]

CUMENE (CUMENE HYDROPEROXIDE (80-15-9))

MLS002454396

BIDD:ER0700

CHEMBL1398949

ISOPROPYLBENZENE (CUMENE)

BENZENE,ISOPROPYL CUMOL

DTXSID80168470

NSC8776

WLN: 1Y1 & R

HMS3039J15

Tox21_202503

STL282733

AKOS000269066

MCULE-3652295432

UN 1918

CAS-98-82-8

NCGC00091155-01

NCGC00260052-01

68936-98-1

SMR001372007

Cumene, PESTANAL(R), analytical standard

Isopropylbenzene 10 microg/mL in Methanol

DB-370622

Isopropylbenzene 100 microg/mL in Methanol

NS00005736

S0652

EN300-19973

Isopropylbenzene [UN1918] [Flammable liquid]

A858512

Q410107

J-520110

J-660071

F0001-2320

Cumene, United States Pharmacopeia (USP) Reference Standard

InChI=1/C9H12/c1-8(2)9-6-4-3-5-7-9/h3-8H,1-2H

Cumene, Pharmaceutical Secondary Standard; Certified Reference Material

The Henry's Law constant for isopropylbenzene is 1.15X10-2 atm-cu m/mole(1). This Henry's Law constant indicates that isopropylbenzene is expected to volatilize rapidly from water surfaces(2). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(2) is estimated as 3 hours(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(2) is estimated as 4 days(SRC). Isopropylbenzene's Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). Isopropylbenzene is expected to volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 4.5 mm Hg(3).

Using a structure estimation method based on molecular connectivity indices(1), the Koc of isopropylbenzene can be estimated to be 700(SRC). According to a classification scheme(2), this estimated Koc value suggests that isopropylbenzene is expected to have low mobility in soil. A Kd value of 0.374 was reported for isopropylbenzene added at 113.1 ug/L to an anaerobic microcosm using aquifer material from Canada Forces Base Borden(3).

P-CYMENE

4-Isopropyltoluene

99-87-6

p-Isopropyltoluene

Dolcymene

Para-cymene

p-Cymol

Paracymene

Camphogen

p-Methylcumene

1-Isopropyl-4-methylbenzene

4-Cymene

2-p-Tolylpropane

Cymol

CYMENE

Benzene, 1-methyl-4-(1-methylethyl)-

p-Methylisopropylbenzene

Paracymol

1-Methyl-4-isopropylbenzene

p-Cimene

4-Isopropyl-1-methylbenzene

Cumene, p-methyl-

4-Methylisopropylbenzene

1-Methyl-4-(1-methylethyl)benzene

p-methyl cumene

p-Isopropylmethylbenzene

4-Methyl-1-isopropylbenzene

Cymene, p-

Benzene, 1-isopropyl-4-methyl-

Isopropyltoluene

1-methyl-4-(propan-2-yl)benzene

4-Isopropyltoluol

FEMA No. 2356

4-Isopropylbenzyl radical

4-methyl isopropylbenzene

4-Cymol

NSC 4162

1-methyl-4-propan-2-ylbenzene

HSDB 5128

Methyl-4-(1-methylethyl)benzene

4-methyl-1-(propan-2-yl)benzene

EINECS 202-796-7

UNII-1G1C8T1N7Q

1-isopropyl-4-methyl-Benzene

1G1C8T1N7Q

DTXSID3026645

CHEBI:28768

AI3-02272

NSC-4162

p-Mentha-1,3,5-triene

DTXCID006645

EC 202-796-7

1-Methyl-4-(1-methylethyl)-benzene

MFCD00008893

CYMENE (MART.)

CYMENE [MART.]

BENZENE,1-ISOPROPYL,4-METHYL P-CYMENE

4939-75-7

para cymene

CAS-99-87-6

isopropyltoluol

p-methyl-Cumene

4-lsopropyltoluene

MML

?4-Isopropyltoluene

p-Cymene, 99%

p-Cymene [UN2046] [Flammable liquid]

p-Cymene [UN2046] [Flammable liquid]

Carvacrol derivative, 8

p-Methylisopropyl benzene

P- Isopropylmethylbenzene

P-CYMENE [FHFI]

P-CYMENE [HSDB]

P-CYMENE [INCI]

P-CYMENE [FCC]

P-CYMENE [MI]

bmse000503

P-CYMENE [WHO-DD]

p-Cymene, analytical standard

1-Methyl-4-isopropyl benzene

p-Cymene, >=97%, FG

CHEMBL442915

NSC4162

BDBM248165

benzene, 1-methyl-4-methylethyl-

WLN: 1Y1 & R D1

1-(1-methylethyl)-4-methylbenzene

Tox21_201932

Tox21_300338

s5598

AKOS000121521

Benzene, 1-methyl-4(1-methylethyl)-

CCG-266123

LMPR0102090014

MCULE-1794861612

p-Isopropyltoluene, analytical standard

USEPA/OPP Pesticide Code: 122103

NCGC00247998-01

NCGC00247998-02

NCGC00254425-01

NCGC00259481-01

AC-34132

AS-11012

NS00005157

S0664

EN300-21455

C06575

Q284072

W-100013

p-Cymene, certified reference material, TraceCERT(R)

F8889-6466

Z104497772

InChI=1/C10H14/c1-8(2)10-6-4-9(3)5-7-10/h4-8H,1-3H

The Henry's Law constant for p-cymene is estimated as 0.011 atm-cu m/mole(SRC), derived from its vapor pressure, 1.5 mm Hg(1), and water solubility, 23.4 mg/L(2). This Henry's Law constant indicates that p-cymene is expected to volatilize rapidly from water surfaces(3). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(3) is estimated as 3.5 hours if adsorption is neglected(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(3) is estimated as 4.6 days if adsorption is neglected(SRC). The volatilization half-life from a model pond is about 30 days if adsorption is considered(4). p-Cymene's estimated Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). p-Cymene is expected to volatilize from dry soil surfaces based upon its vapor pressure(SRC).
Literature: (1) Daubert TE, Danner RP; Physical and Thermodynamic Properties of Pure Chemicals Data Compilation Washington, DC: Taylor and Francis (1996) (2) Banerjee S et al; Environ Sci Technol 11: 1227-29 (1980) (3) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington

Using a structure estimation method based on molecular connectivity indices(1), the Koc of p-cymene can be estimated to be 1120(SRC). According to a classification scheme(2), this estimated Koc value suggests that p-cymene is expected to have low mobility in soil.
Literature: (1) US EPA; Estimation Program Interface (EPI) Suite. Ver. 4.11. Nov, 2012. Available from, as of July 29, 2013: http://www.epa.gov/oppt/exposure/pubs/episuitedl.htm (2) Swann RL et al; Res Rev 85: 17-28 (1983)

ETHYLBENZENE

100-41-4

Phenylethane

Ethylbenzol

Benzene, ethyl-

Ethyl benzene

Aethylbenzol

Ethylenzene

Ethylbenzeen

Etilbenzene

Etylobenzen

alpha-Methyltoluene

1-ethylbenzene

NCI-C56393

HSDB 84

CCRIS 916

NSC 406903

EINECS 202-849-4

UNII-L5I45M5G0O

L5I45M5G0O

.alpha.-Methyltoluene

DTXSID3020596

ETHYL-BENZENE

CHEBI:16101

AI3-09057

EB

NSC-406903

DTXCID10596

CHEMBL371561

ETHYL-BETA,BETA,BETA-D3-BENZENE

EC 202-849-4

ETHYLBENZENE (IARC)

ETHYLBENZENE [IARC]

Benzene-d5, ethyl-d5-

158507-69-8

68908-88-3

ETHYLBENZENE (USP-RS)

ETHYLBENZENE [USP-RS]

Ethylbenzeen [Dutch]

Etylobenzen [Polish]

20302-26-5

Aethylbenzol [German]

Etilbenzene [Italian]

287399-33-1

UN1175

etph

1-phenylethane

PYJ

EINECS 272-685-6

ETHYLBENZENE [MI]

Ethylbenzene [UN1175] [Flammable liquid]

ETHYLBENZENE [HSDB]

WLN: 2R

BIDD:ER0246

ghl.PD_Mitscher_leg0.1024

NSC 406903, Phenylethane

QSPL 092

Ethylbenzene, analytical standard

DTXSID00169202

DTXSID30178044

Ethylbenzene, anhydrous, 99.8%

NCI C56393

AMY11052

Tox21_201064

BDBM50167951

Ethylbenzene, ReagentPlus(R), 99%

MFCD00011647

NSC406903

STL282714

AKOS000120140

MCULE-6974188032

UN 1175

NCGC00090768-01

NCGC00090768-02

NCGC00258617-01

27536-89-6

70955-17-8

BS-18982

CAS-100-41-4

Ethylbenzene 10 microg/mL in Cyclohexane

Ethylbenzene 100 microg/mL in Cyclohexane

DB-045168

E0064

NS00009164

S0646

C07111

Q409184

J-000128

J-521339

F0001-0016

Z104473632

Ethylbenzene, United States Pharmacopeia (USP) Reference Standard

InChI=1/C8H10/c1-2-8-6-4-3-5-7-8/h3-7H,2H2,1H

Ethylbenzene, Pharmaceutical Secondary Standard; Certified Reference Material

The Henry's Law constant for ethylbenzene is 7.88X10-3 atm-cu m/mole(1). This Henry's Law constant indicates that ethylbenzene is expected to volatilize rapidly from water surfaces(2). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(2) is estimated as 3.1 hours(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(2) is estimated as 4.1 days(SRC). Ethylbenzene's Henry's Law constant(1) indicates that volatilization from moist soil surfaces may occur(SRC). Ethylbenzene is expected to volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 9.6 mm Hg(3).
Literature: (1) Sanemasa I et al; Bull Chem Soc Jpn 55: 1054-62 (1982) (2) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 15-1 to 15-29 (1990) (3) Daubert TE, Danner RP; Physical and Thermodynamic Properties of Pure Chemicals: Data Compilation. Design Institute for Physical Property Data, American Institute of Chemical Engineers. New York, NY: Hemisphere Pub Corp, (1996)

Measured ethylbenzene Koc values of 224(1), 240(2) and 257(3) have been reported. According to a classification scheme(4), these Koc values suggest that ethylbenzene is expected to have moderate mobility in soil. Sorption and desorption experiments demonstrated that the sorption process of ethylbenzene on marine sediments is reversible and that the sorption is even lower than expected from the log Kow data and the organic carbon content of the sediment(5); it was concluded that the marine sediment compartment is not an important sink for ethylbenzene(5). A soil leaching column study estimated an ethylbenzene Koc of 240 using a chromatographic methodology(6).
Literature: (1) Schuurmann G et al; Environ Sci Technol 40: 7005-7011 (Supporting information) (2006) (2) ATSDR; Toxicological Profile for Ethylbenzene. Atlanta, GA: Agency for Toxic Substances and Disease Registry, US Public Health Service (2010). Available from, as of June 15, 2016: http://www.atsdr.cdc.gov/toxprofiles/index.asp (3) Szabo G; Chemosphere 24: 403-412 (1992) (4) Swann RL et al; Res Rev 85: 17-28 (1983) (5) Dewulf J et al; Water Research 30: 3130-3138 (1996) (6) Xu F et al; J Environ Qual 30: 1618-1623 (2001)

Propylbenzene

N-PROPYLBENZENE

103-65-1

1-Phenylpropane

Phenylpropane

Isocumene

Benzene, propyl-

1-Propylbenzene

n-Propyl benzene

Propylbenzene, n-

propyl benzene

Propyl-benzene

NSC 16941

HSDB 5353

UNII-0WR86ZHG2Z

EINECS 203-132-9

0WR86ZHG2Z

DTXSID3042219

CHEBI:42630

AI3-23862

NSC-16941

CHEMBL286062

DTXCID1022219

Propylbenzene, analytical standard

UN2364

Propylbenzene (all isomers)

benzene, propyl

3H0

Benzene, n-propyl-

PRPH

Propylbenzene, 98%

BENZENE,PROPYL

PROPYLBENZENE [MI]

PHENYLPROPANE [INCI]

WLN: 3R

N-PROPYLBENZENE [HSDB]

Propylbenzene, >=99.0% (GC)

NSC16941

Tox21_300567

BDBM50167945

MFCD00009377

AKOS000120950

MCULE-1436126757

UN 2364

NCGC00248093-01

NCGC00254532-01

CAS-103-65-1

n-Propylbenzene 100 microg/mL in Methanol

NS00006753

P0523

S0656

EN300-20607

n-Propyl benzene [UN2364] [Flammable liquid]

A800778

Q288806

J-001016

J-523764

Z104479154

InChI=1/C9H12/c1-2-6-9-7-4-3-5-8-9/h3-5,7-8H,2,6H2,1H

The Henry's Law constant for n-propylbenzene is 1.05X10-2 atm-cu m/mole(1). This Henry's Law constant indicates that n-propylbenzene is expected to volatilize rapidly from water surfaces(2). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(2) is estimated as 1 hour(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(2) is estimated as 4 days(SRC). Results of mesocosm studies simulating the Narragansett Bay indicate that volatilization is the major removal process from seawater(3); volatilization half-lives of 1.3-19 days were estimated for summer, spring and winter seasons(5). n-Propylbenzene's Henry's Law constant(1) indicates that volatilization from moist soil surfaces may occur(SRC). The potential for volatilization of n-propylbenzene from dry soil surfaces may exist(SRC) based upon it's vapor pressure of 3.42 mm Hg(4).

A Koc of 725 was measured for n-propylbenzene using a surface sediment collected from the Tamar estuary(1). A similar Koc of 676 was measured in a humic acid column via HPLC(2). Adsorption percentages ranging from 0.16 to 5.58% were measured in soil column studies using three different soil types and a sludge sample(3). Using a structure estimation method based on molecular connectivity indices(4), the Koc for n-propylbenzene can be estimated to be 955(SRC). According to a classification scheme(5), these estimated and measured Koc values suggest that n-propylbenzene is expected to have low mobility in soil.

Butylbenzene

N-BUTYLBENZENE

104-51-8

1-Phenylbutane

Benzene, butyl-

1-Butylbenzene

n-butyl benzene

butyl-benzene

CHEMBL195441

S8XZ2901RZ

DTXSID6022472

CHEBI:44194

NSC-8465

MFCD00009463

Butane, phenyl-

Butylbenzene, analytical standard

N4B

HSDB 7211

NSC 8465

EINECS 203-209-7

BRN 1903395

UNII-S8XZ2901RZ

4n-butylbenzene

AI3-00119

normalbutylbenzene

3-n-butylbenzene

normal butylbenzene

Normal-butylbenzene

Benzene, n-butyl-

Butylbenzene, >=99%

N-BUTYLBENZENE [MI]

WLN: 4R

4-05-00-01033 (Beilstein Handbook Reference)

BIDD:ER0273

N-BUTYLBENZENE [HSDB]

DTXCID902472

NSC8465

186l

Tox21_300511

BDBM50167957

STL483074

AKOS000121610

NCGC00248079-01

NCGC00254529-01

CAS-104-51-8

LS-13807

B0713

NS00001482

S0667

EN300-21128

C18150

H11923

J-001189

J-519968

Q16081199

F0001-0089

Z104492496

Benzene, butyl-; Butylbenzene; 1-Butylbenzene; 1-Phenylbutane; NSC 8465; n-Butylbenzene

InChI=1/C10H14/c1-2-3-7-10-8-5-4-6-9-10/h4-6,8-9H,2-3,7H2,1H

The Henry's Law constant for n-butylbenzene is estimated as 0.016 atm-cu m/mole(SRC) derived from its vapor pressure, 1.06 mm Hg(1), and water solubility, 11.8 mg/L(2). This Henry's Law constant indicates that n-butylbenzene is expected to volatilize rapidly from water surfaces(3). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(3) is estimated as 3.5 hours(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(3) is estimated as 4.6 days(SRC). However, volatilization from water surfaces is expected to be attenuated by adsorption to suspended solids and sediment in the water column(SRC). The estimated volatilization half-life from a model pond is 16 days if adsorption is considered(4). n-Butylbenzene's estimated Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). The potential for volatilization of n-butylbenzene from dry soil surfaces may exist(SRC) based upon a vapor pressure of 1.06 mm Hg(1). However, volatilization is expected to be attenuated by adsorption to soil(SRC).

An average of the log of the sediment to water partition coefficient (average log Kp) for n-butylbenzene of 2.00 was determined from 16 measurements(1); from this value a log Koc of 3.40 (Koc=2,510) was calculated(2). A measured log Koc of 3.39 (Koc=2,450) was reported for n-butylbenzene(3). A Koc of 2,460 was reported for n-butylbenzene(4), calculated from a measured partition coefficient of 3.69 for natural aquifer material and water(5). According to a classification scheme(6), these Koc values suggest that n-butylbenzene is expected to have slight mobility in soil.

P-XYLENE

1,4-Dimethylbenzene

Para-Xylene

106-42-3

1,4-Xylene

p-Methyltoluene

p-Dimethylbenzene

p-Xylol

Benzene, 1,4-dimethyl-

4-Xylene

4-Methyltoluene

Chromar

Scintillar

1,4-Dimethylbenzol

paraxylene

CCRIS 910

NSC 72419

HSDB 136

EINECS 203-396-5

UNII-6WAC1O477V

6WAC1O477V

DTXSID2021868

CHEBI:27417

AI3-52255

NSC-72419

68650-36-2

CHEMBL31561

p-Xylene-alpha,alpha'-13C2

DTXCID701868

EC 203-396-5

MFCD00008556

Xylene, p-

Benzene, p-dimethyl-

p-Xylenes

Xylene, p-isomer

PXY

p-Xylol (DOT)

1,4-dimethyl benzene

1,4-dimethyl-benzene

P-XYLENE [MI]

4-XYLENE [HSDB]

bmse000834

p-Xylene, analytical standard

BENZENE,1,4-DIMETHYL

WLN: 1R D1

p-Xylene, anhydrous, >=99%

p-Xylene, for synthesis, 99%

DTXSID90178045

187l

p-Xylene, for HPLC, >=99%

p-Xylene, ReagentPlus(R), 99%

NSC72419

p-Xylene 10 microg/mL in Methanol

Tox21_201113

BDBM50008567

Benzene, 1,2(or 1,4)-dimethyl-

c0083

STL264212

AKOS000121124

MCULE-3769448716

p-Xylene 5000 microg/mL in Methanol

p-Xylene, purum, >=98.0% (GC)

NCGC00091661-01

NCGC00091661-02

NCGC00258665-01

68411-39-2

CAS-106-42-3

p-Xylene, SAJ first grade, >=99.0%

p-Xylene [UN1307] [Flammable liquid]

p-Xylene, SAJ special grade, >=99.0%

NS00001217

S0649

X0014

X0044

EN300-24549

p-Xylene, puriss. p.a., >=99.0% (GC)

C06756

J-001588

J-524068

Q3314420

F0001-0120

Z199056432

InChI=1/C8H10/c1-7-3-5-8(2)6-4-7/h3-6H,1-2H

p-Xylene, Pharmaceutical Secondary Standard; Certified Reference Material

136777-61-2

25951-90-0

The Henry's Law constant for 4-xylene is measured as 6.90X10-3 atm-cu m/mole(1). This Henry's Law constant indicates that 4-xylene is expected to volatilize rapidly from water surfaces(2). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(2) is estimated as 3.1 hours(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(2) is estimated as 4.1 days(SRC). 4-Xylene's Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). 4-Xylene is expected to volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 8.84 mm Hg(3).
Literature: (1) Foster P et al; Fresen Environ Bull 3: 318-323 (1994) (2) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 15-1 to 15-29 (1990) (3) Chao J et al; J Phys Chem Ref Data 12: 1033-63 (1983)

Koc values of 246 and 540 have been measured for 4-xylene in silt and sandy loam soils respectively(1). A Koc value of 204 was measured for 4-xylene using sandy aquifer materials(2). A median experimental Koc value of 295 has also been reported(3). According to a classification scheme(4), these Koc values suggest that 4-xylene is expected to have moderate to low mobility in soil. A soil leaching column study estimated a 4-xylene Koc of 331 using a chromatographic methodology(5). Another soil column leaching study estimated a Koc range of 118-298 based on HPLC measurement(6).
Literature: (1) Walton BT et al; J Environ Qual 21: 552-558 (1992) (2) Abdul AS et al; Hazard Waste & Hazard Mater 4: 211-22 (1987) (3) Schuurmann G et al; Environ Sci Technol 40: 7005-7011 (Supporting information) (2006) (4) Swann RL et al; Res Rev 85: 17-28 (1983) (5) Xu F et al; J Environ Qual 30: 1618-1623 (2001) (6) ECHA; Search for Chemicals. p-Xylene (CAS 106-42-3) Registered Substances Dossier. European Chemical Agency; Available from, as of June 27, 2016: http://echa.europa.eu/

M-XYLENE

1,3-Dimethylbenzene

108-38-3

1,3-Xylene

meta-Xylene

m-Xylol

m-Dimethylbenzene

m-Methyltoluene

Benzene, 1,3-dimethyl-

3-Xylene

1,3-Dimethylbenzol

Santosol 150

m-Xylenes

2,4-Xylene

CCRIS 907

NSC 61769

HSDB 135

UNII-O9XS864HTE

EINECS 203-576-3

O9XS864HTE

DTXSID6026298

CHEBI:28488

AI3-08916

NSC-61769

CHEMBL286727

DTXCID501446

EC 203-576-3

M-XYLENE-ALPHA,ALPHA'-13C2

MFCD00008536

68908-87-2

Xylene, m-

Benzene, m-dimethyl-

CAS-108-38-3

EINECS 272-684-0

metaxylene

M xylene

1,3-dimethyl-benzene

m-Xylene [UN1307] [Flammable liquid]

DSSTox_CID_1446

M-XYLENE [MI]

3-XYLENE [HSDB]

bmse000554

DSSTox_RID_76162

DSSTox_GSID_21446

m-Xylene, analytical standard

BENZENE,1,3-DIMETHYL

WLN: 1R C1

m-Xylene, anhydrous, >=99%

m-Xylene, for synthesis, 99%

DTXSID50178041

m-Xylene, ReagentPlus(R), 99%

NSC61769

m-Xylene 10 microg/mL in Methanol

Tox21_200292

Tox21_202056

Tox21_303203

BDBM50008556

STL268867

m-Xylene 100 microg/mL in Methanol

AKOS000121123

MCULE-9376558510

NCGC00091711-01

NCGC00091711-02

NCGC00091711-03

NCGC00257052-01

NCGC00257846-01

NCGC00259605-01

m-Xylene, SAJ first grade, >=98.5%

CAS-1330-20-7

NS00010709

NS00125194

S0648

X0013

EN300-24548

m-Xylene, puriss. p.a., >=99.0% (GC)

C07208

J-503933

Q3234708

F1908-0174

InChI=1/C8H10/c1-7-4-3-5-8(2)6-7/h3-6H,1-2H

m-Xylene, Pharmaceutical Secondary Standard; Certified Reference Material

The Henry's Law constant for 3-xylene is measured as 7.18X10-3 atm-cu m/mole(1). This Henry's Law constant indicates that 3-xylene is expected to volatilize rapidly from water surfaces(2). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(2) is estimated as 3.1 hours(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(2) is estimated as 4.1 days(SRC). 3-Xylene's Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). 3-Xylene is expected to volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 8.29 mm Hg at 25 deg C(3).
Literature: (1) Sanemasa I et al; Bull Chem Soc Jpn 55: 1054-62 (1982) (2) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 15-1 to 15-29 (1990) (3) Chao J et al; J Phys Chem Ref Data 12: 1033-63 (1983)
Literature: #An experiment which measured the rate of evaporation of m- and p-xylene from a 1:1000 jet fuel:water mixture found that it averaged 0.64 times the oxygen reaeration rate(1).
Literature: (1) Smith JH, Harper JC; pp.336-53 in 12th Conf Environ Toxicol: Behavior of Hydrocarbon Fuels in the Aquatic Environment (1980)

A Koc value of 166 was measured for 3-xylene using sandy aquifer materials with an foc ranging from 0.0002 to 0.0225(1). Measured Koc values in soil have been reported to be 182(2), 166 and 275(3). According to a classification scheme(3), these Koc values suggest that 3-xylene is expected to have moderate mobility in soil. A Kp value (equilibrium-sorption coefficient) of 0.049 was measured for 3-xylene using a Borden soil column (98% sand, 0.29% organic carbon)(5). Benzene/toluene/xylene mixtures containing 3-xylene, were added to soil columns using aquifer material from the Cohansey aquifer (90% sand; 4.4% organic matter; pH-3.8); a partition coefficient of 8.74 was measured for 3-xylene(6). Adsorption coefficient values of 0.25, 0.23, and 0.02 were measured for 3-xylene, present in a benzene/toluene/ethylbenzene/xylene mixture, on montmorillonite, illite, and kaolinite (all with low to no organic carbon present), respectively, using a batch equilibrium technique(7). More 3-xylene vapor was sorbed by air-dry than oven-dry soil (Evesham clay; air-dry soil contained 37 g organic C, 350 g clay, and 60 g water/kg oven-dry soil) at relative vapor pressures of 3-xylene exceeding 0.6; this suggests that the planar 3-xylene molecule is either readily adsorbed by interlayer sites in the air-dry soil (more sites potentially available than in oven-dry soil) or, as it is a fairly soluble molecule, that some will dissolve in the water film in air-dry soil(8). 3-Xylene has been observed to pass through soil unchanged in concentration at a dune-infiltration site on the Rhine River(9). A soil leaching column study estimated a 3-xylene Koc of 282 using a chromatographic methodology(10).
Literature: (1) Abdul AS et al; Hazard Waste & Hazard Mater 4: 211-22 (1987) (2) Sabljic A; Environ Sci Technol 21: 358-66 (1987) (3) Schuurmann G et al; Environ Sci Technol 40: 7005-7011 (Supporting information) (2006) (4) Swann RL et al; Res Rev 85: 17-28 (1983) (5) Hu Q et al; Environ Toxicol Chem 14: 1133-40 (1995) (6) Uchrin CG, Katz J; Bull Environ Contam Toxicol 46: 534-41 (1991) (7) Li Y, Gupta G; Chemosphere 28: 627-38 (1994) (8) Nye PH et al; J Environ Qual 23: 1031-37 (1994) (9) Piet GJ et al; Quality of Groundwater Int Symp Proc Von Duijvanbouden W et al, eds. Studies Environ Sci 17: 557-64 (1981) (10) Xu F et al; J Environ Qual 30: 1618-1623 (2001)

MESITYLENE

1,3,5-Trimethylbenzene

108-67-8

sym-Trimethylbenzene

3,5-Dimethyltoluene

Fleet-X

Trimethylbenzol

Benzene, 1,3,5-trimethyl-

s-Trimethylbenzene

2,4,6-trimethylbenzene

NSC 9273

Trimethylbenzene, 1,3,5-

HSDB 92

1,3,5-trimethyl-benzene

EINECS 203-604-4

UNII-887L18KQ6X

CCRIS 8147

DTXSID6026797

CHEBI:34833

AI3-23973

887L18KQ6X

NSC-9273

DTXCID506797

EC 203-604-4

CAS-108-67-8

UN2325

Symmetrical trimethylbenzene

Mesitylene, 98%

MESITELENE

MESITYLENE [MI]

MESITYLENE [HSDB]

MESITYLENE [INCI]

1,3, 5-Trimethylbenzene

(3,5-dimethylphenyl)methyl

BIDD:ER0286

Mesitylene (ACD/Name 4.0)

Mesitylene, analytical standard

CHEMBL1797281

WLN: 1R C1 E1

Mesitylene, reagent grade, 97%

NSC9273

BENZENE,1,3,5-TRIMETHYL

DTXSID601311725

STR03436

Tox21_201452

Tox21_300341

MFCD00008538

STL268905

1,3,5-Trimethylbenzene (Mesitylene)

AKOS000120144

MCULE-4050779572

Mesitylene, purum, >=98.0% (GC)

UN 2325

NCGC00247999-01

NCGC00247999-02

NCGC00254430-01

NCGC00259003-01

NS00004224

S0658

T0470

EN300-19371

A801911

Q425161

J-002179

J-521685

1,3,5-Trimethylbenzene [UN2325] [Flammable liquid]

F0001-0175

Mesitylene, certified reference material, TraceCERT(R)

Z104473654

InChI=1/C9H12/c1-7-4-8(2)6-9(3)5-7/h4-6H,1-3H

19121-63-2

The Henry's Law constant for 1,3,5-trimethylbenzene was measured as 8.77X10-3 atm-cu m/mole(1). This Henry's Law constant indicates that 1,3,5-trimethylbenzene is expected to volatilize rapidly from water surfaces(2). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(2) is estimated as 1.2 hours(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(2) is estimated as 4.4 days(SRC). 1,3,5-Trimethylbenzene's Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). 1,3,5-Trimethylbenzene is expected to volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 2.48 mm Hg(3). Residence times (with respect to volatilization) for 1,3,5-trimethylbenzene were calculated as 220 hours for both winter and summer conditions in Narragansett Bay(4). Complete removal of 1,3,5-trimethylbenzene (at 0.035 ug/ml soil extract) from sandy loam soil samples contaminated with jet fuel was reported within 5 days; sterile samples with 1,3,5-trimethylbenzene at 0.035 ug/ml soil extract also showed complete removal of this compound within 5 days, probably by evaporation(5).
Literature: (1) Sanemasa,I et al; Bull Chem Soc Jpn 55: 1054-62 (1982) (2) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 15-1 to 15-29 (1990) (3) Daubert TE, Danner RP; Physical and Thermodynamic Properties of Pure Chemicals Data Compilation. Washington, DC: Taylor and Francis (1989) (4) Wakeham SG et al; Canad J Fish Aquat Sci 40: 304-21 (1983) (5) Dean-Ross D; Bull Environ Contam Toxicol 51: 596-99 (1993)

The Koc of 1,3,5-trimethylbenzene has been measured at a range of 501-1,445(1-4). According to a classification scheme(5), this Koc range suggests that 1,3,5-trimethylbenzene is expected to have low mobility in soil. 1,3,5-Trimethylbenzene was detected in soil leachate samples following the addition of crude oil to the surface of a soil trough filled with sand(6).
Literature: (1) Schwarzenbach RP, Westall J; Environ Sci Technol 15: 1360-67 (1981) (2) Borisover MD et al; Chemosphere 34: 1761-1776 (1997) (3) Wiedemeier TH et al; Ground Water Monit Remed 16: 186-194 (1996) (4) XU F et al; J Environ Qual 30: 1618-1623 (2001) (5) Swann RL et al; Res Rev 85: 17-28 (1983) (6) Duffy JJ et al; Environ Internat 3: 107-120 (1980)

1,2,3-TRIMETHYLBENZENE

526-73-8

Hemimellitene

Trimethylbenzene

Hemellitol

Hemimellitol

Benzene, 1,2,3-trimethyl-

25551-13-7

ZK4R7UPH6R

1,2,3-trimethyl-benzene

DTXSID8047769

CHEBI:34037

NSC-5167

1,3-Trimethylbenzene

Hemimellitene, 90.5%

Benzene,2,3-trimethyl-

Trimethyl benzene

1,2,3-Trimethylbenzene 100 microg/mL in Methanol

WLN: 1R B1 C1

1,3-Trimethylbenzene, 90.5%

TRIMETHYLBENZENES

HSDB 6830

NSC 5167

1,2,3-Trimethylbenzene, 90.5%

EINECS 208-394-8

EINECS 247-099-9

UNII-ZK4R7UPH6R

BRN 1903410

Trimethylbenzene, 1,2,3-

CCRIS 8145

UNII-A3F3279Q14

HSDB 7551

Benzene, 1,2,3-trimethyl-; 1,2,3-Trimethylbenzene; Hemimellitene; Hemimellitol; NSC 5167; NSC 65599

1,2,3-TrimethyIbenzene

HEMIMELLITENE [HSDB]

4-05-00-01007 (Beilstein Handbook Reference)

BIDD:ER0517

CHEMBL1797279

DTXCID7027750

DTXSID6049808

CHEBI:38641

NSC5167

1,2,3-TRIMETHYL BENZENE

AMY25707

NSC65599

1,2,3-Trimethylbenzene (>90%)

Tox21_303868

MFCD00008520

NSC-65599

AKOS009031505

MCULE-1130443786

1,2,3-Trimethylbenzene (>90per cent)

NCGC00357131-01

CAS-526-73-8

DB-246429

1,2,3-Trimethylbenzene, analytical standard

NS00010824

T0468

EN300-19373

1,2,3-Trimethylbenzene, technical grade, 90%

A829196

Q4352416

W-105806

F0001-1357

Z104473658

InChI=1/C9H12/c1-7-5-4-6-8(2)9(7)3/h4-6H,1-3H

The Henry's Law constant for 1,2,3-trimethylbenzene is 4.36X10-3 atm-cu m/mole(1). This Henry's Law constant indicates that 1,2,3-trimethylbenzene is expected to volatilize from water surfaces(2). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(2) is estimated as 3.4 hours(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(2) is estimated as 4.4 days(SRC). 1,2,3-Trimethylbenzene's Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). 1,2,3-Trimethylbenzene is expected to volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 1.69 mm Hg(3).
Literature: (1) Sanemasa I et al; Bull Chem Soc Jpn 55:1054-62 (1982) (2) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 15-1 to 15-29 (1990) (3) Yaws CL; IN: Handbook of Vapor Pressure V3 C8-C28 Compounds p. 124 (1994)

1,2,3-Trimethylbenzene has measured log Koc values of 3.04(1) and 2.80(2-5). These values correspond to Koc values of 1,096 and 630. 1,2,3-Trimethylbenzene also has a reported log Kom value of 2.80(6-7). According to a classification scheme(8), these Koc values suggest that 1,2,3-trimethylbenzene is expected to have low mobility in soil(SRC).
Literature: (1) Borisover MD, Graber ER; Chemosphere 34: 1761-76 (1997) (2) Gao C et al; Environ Toxicol Chem 15: 1089-96 (1996) (3) Park JH, Lee HJ; Chemosphere 26: 1905-16 (1993) (4) Sabljic A et al; Chemosphere 31: 4489-514 (1995) (5) Xu F et al; J Environ Qual 30: 1618-23 (2001) (6) Okouchi S, Saegusa H; Bull Chem Soc Jpn 62: 922-4 (1989) (7) Sabljic A; Environ Sci Technol 21: 358-66 (1987) (8) Swann RL et al; Res Rev 85: 17-28 (1983)

O-CYMENE

2-Isopropyltoluene

527-84-4

o-Cymol

1-Isopropyl-2-methylbenzene

o-Isopropyltoluene

CYMENE, ORTHO

1-Methyl-2-isopropylbenzene

1-methyl-2-propan-2-ylbenzene

1-Methyl-2-(1-methylethyl)benzene

ortho-cymene

1-Methyl-2-isopropylbenzol

Benzene, methyl(1-methylethyl)-

Benzene, 1-methyl-2-(1-methylethyl)-

HSDB 3427

EINECS 208-426-0

NSC 73976

BRN 1850838

UNII-2T13HF3266

NSC-73976

2T13HF3266

1-methyl,2-n-isopropylbenzene

25155-15-1

1-(1-methylethyl)-2-methylbenzene

4-05-00-01057 (Beilstein Handbook Reference)

1-Methyl-2-(1-methylethyl)-benzene

2-Isopropyltoluene 100 microg/mL in Acetonitrile

isopropyl toluene

cymene (ortho-)

o-Cymene, 98%

2-Methylisopropylbenzene

O-ISOPROPELTOLUENE

O-CYMENE [MI]

O-Mentha-1,3,5-triene

DTXSID1052165

CHEBI:89263

1-methyl-2-(propan-2-yl)benzene

NSC73976

MFCD00008888

AKOS015840505

UN 2046

BS-52939

1-Methyl-2-(1-methylethyl)benzene, 9CI

o-Cymene [UN2046] [Flammable liquid]

CS-0368263

NS00010825

T71005

Q27161449

The Henry's Law constant for o-cymene is estimated as 0.011 atm-cu m/mole(SRC) derived from its vapor pressure, 1.5 mm Hg(1), and water solubility, 23.29 mg/L(2). This Henry's Law constant indicates that o-cymene is expected to volatilize rapidly from water surfaces(3). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(3) is estimated as 3.5 hours(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(3) is estimated as 4.6 days(SRC). o-Cymene's estimated Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). o-Cymene is expected to volatilize from dry soil surfaces(SRC) based upon its vapor pressure(1).
Literature: (1) Daubert TE, Danner RP; Physical and Thermodynamic Properties of Pure Chemicals Data Compilation. Washington, DC: Taylor and Francis (1989) (2) Okouchi S et al; Environ Int 18: 249-61 (1992) (3) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 15-1 to 15-29 (1990)

Using a structure estimation method based on molecular connectivity indices(1), the Koc of o-cymene can be estimated to be 1140(SRC). According to a classification scheme(2), this estimated Koc value suggests that o-cymene is expected to have low mobility in soil.
Literature: (1) US EPA; Estimation Program Interface (EPI) Suite. Ver. 4.1. Jan, 2011. Available from, as of Nov 5, 2013: http://www.epa.gov/oppt/exposure/pubs/episuitedl.htm (2) Swann RL et al; Res Rev 85: 17-28 (1983)