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)