DECAMETHYLTETRASILOXANE

141-62-8

1,1,1,3,3,5,5,7,7,7-Decamethyltetrasiloxane

Tetrasiloxane, decamethyl-

decamethyl tetrasiloxane

Tetrasiloxane, 1,1,1,3,3,5,5,7,7,7-decamethyl-

C23WAL597T

MFCD00008263

[dimethyl(trimethylsilyloxy)silyl]oxy-dimethyl-trimethylsilyloxysilane

UNII-C23WAL597T

C10H30O3Si4

[(CH3)3SiOSi(CH3)2]2O

EINECS 205-491-7

decamethyletrasiloxane

EC 205-491-7

SCHEMBL33683

Decamethyltetrasiloxane, 97%

DECAMETHYLTETRASILOXANE?

TETRASILOXANE, DECAMETHYL

DTXSID2044551

YFCGDEUVHLPRCZ-UHFFFAOYSA-

DECAMETHYLTETRASILOXANE [MI]

AC7887

CD3780

AKOS015840181

FS-4552

SY041908

DB-042574

CS-0204019

D2314

D3780

NS00041635

S05500

J-007527

J-520210

Q4004975

1,1,1,3,3,5,5,7,7,7-Decamethyltetrasiloxane #

N-2-NITROPHENYLSULFENYL-L-VALINEDICYCLOHEXYLAMMONIUMSALT

(dimethyl-trimethylsilyloxysilyl)oxy-dimethyl-trimethylsilyloxysilane

2,2,4,4,6,6,8,8-octamethyl-3,5,7-trioxa-2,4,6,8-tetrasilanonane

1,1,1,3,3,5,5,7,7,7-Decamethyltetrasiloxane; SH 200-1.5CS; DC 200 Fluid 1.5; 1,1,3,3-Tetramethyl-1,3-bis(trimethylsiloxy)disiloxane; KF 96L1.5

97.0% pound D4 pound(1/4)0.1% pound notD5 pound(1/4)0.1% pound notD6 pound(1/4)0.1% pound(c)

InChI=1/C10H30O3Si4/c1-14(2,3)11-16(7,8)13-17(9,10)12-15(4,5)6/h1-10H3

53044-27-2

BHJOIVXJMQHKIY-UHFFFAOYSA-N

Acetic acid, [bis[(trimethylsilyl)oxy]phosphinyl]-, trimethylsilyl ester

Phosphonoacetic Acid, 3TMS derivative

DB-310756

Trimethylsilyl (bis[(trimethylsilyl)oxy]phosphoryl)acetate #

[Bis[(trimethylsilyl)oxy]phosphinyl ]acetic acid trimethylsilyl ester

4-(4-Hydroxyphenyl)-4-methyl-2-pentanone, TMS derivative

Trimethyl[4-(2-methyl-4-oxo-2-pentyl)phenoxy]silane

OZWRGFMVGUCVJF-UHFFFAOYSA-N

4-Methyl-4-(4-[(trimethylsilyl)oxy]phenyl)-2-pentanone #

Paroxypropione, TMS derivative

Propiophenone, 4'-(trimethylsiloxy)-

33342-89-1

1-(4-trimethylsilyloxyphenyl)propan-1-one

1-Propanone, 1-[4-[(trimethylsilyl)oxy]phenyl]-

DTXSID40345664

LKRFHGYECXRRCO-UHFFFAOYSA-N

Trimethylsilyl ether of p-hydroxypropiophenone

1-(4-[(Trimethylsilyl)oxy]phenyl)-1-propanone #

SCHEMBL3024380

2-Methoxyethanol, TBDMS derivative

(2-methoxyethoxy)-t-butyldimethylsilane

t-butyl dimethyl 2-methoxyethoxy silane

(2-methoxyethoxy)-tert-butyldimethylsilane

tert-Butyl-(2-methoxyethoxy)dimethylsilane

2,2,3,3-Tetramethyl-4,7-dioxa-3-silaoctane

Octadecanoic acid, dimethyl(isopropyl)silyl ester

TWNUYJNPVQXNQN-UHFFFAOYSA-N

Isopropyl(dimethyl)silyl stearate #

Tridecanoic acid, tripropylsilyl ester

Tripropylsilyl tridecanoate #

IKFJXWWULCMCQD-UHFFFAOYSA-N

2,6-Bis(trimethylsilyloxy)benzoic acid trimethylsilyl ester

Benzoic acid, 2,6-bis[(trimethylsilyl)oxy]-, trimethylsilyl ester

Trimethylsilyl 2,6-bis[(trimethylsilyl)oxy]benzoate

3782-85-2

APVNJYLNHAHELF-UHFFFAOYSA-N

DTXSID301346412

Benzoic acid, 2,6-dihydroxy, tri-TMS

2,6-Dihydroxybenzoic acid, 3TMS derivative

Q63391901

Trimethylsilyl 2,6-bis[(trimethylsilyl)oxy]benzoate #

2,6-Dihydroxybenzoic acid, bis(trimethylsilyl) ether, trimethylsilyl ester

Benzoic acid, 2,3-bis[(trimethylsilyl)oxy]-, trimethylsilyl ester

Trimethylsilyl 2,3-bis[(trimethylsilyl)oxy]benzoate

IPIPJXIWUUYKNS-UHFFFAOYSA-N

Benzoic acid, 2,3-dihydroxy, tri-TMS

2,3-Dihydroxybenzoic acid, 3TMS derivative

Q63408910

Trimethylsilyl 2,3-bis[(trimethylsilyl)oxy]benzoate #

2,3-BIS(TRIMETHYLSILYL)OXY-BENZOIC ACID TRIMETHYLSILYL ESTER

1,2-Bis(trimethylsilyl)benzene

17151-09-6

trimethyl-(2-trimethylsilylphenyl)silane

Trimethyl[2-(trimethylsilyl)phenyl]silane

MFCD00015590

DTXSID30334143

Silane, 1,2-phenylenebis[trimethyl-

AKOS015840092

MCULE-6388806568

1,2-PHENYLENEBIS(TRIMETHYLSILANE)

SY053637

B2299

CS-0336873

Trimethyl[2-(trimethylsilyl)phenyl]silane #

T70415

MMUCIJOPDDWEJV-UHFFFAOYSA-N

Benzoic acid, 3-methyl-2-trimethylsilyloxy-, trimethylsilyl ester

3-Methylsalicylic acid, 2TMS derivative

Q63409705

Trimethylsilyl 3-methyl-2-[(trimethylsilyl)oxy]benzoate #

3-METHYL-2-(TRIMETHYLSILYL)OXYBENZOIC ACIDTRIMETHYLSILYL ESTER

o-Vanillin, TMS derivative

NVFQNBMOSVRDKT-UHFFFAOYSA-N

3-methoxy-2-[(trimethylsilyl)oxy]benzaldehyde

EN300-45209690

2-Hydroxy-3-methoxybenzaldehyde, trimethylsilyl ether

N-Methyladrenaline, tri-TMS

UVFBJUNBLLVBTA-UHFFFAOYSA-N

N-Methyladrenaline, 3TMS derivative

2-(3,4-Bis[(trimethylsilyl)oxy]phenyl)-N,N-dimethyl-2-[(trimethylsilyl)oxy]ethanamine #

5-Methyl-N-(trimethylsilyl)isoxazol-3-amine

99356-57-7

PRHAHKRWNHLXGA-UHFFFAOYSA-N

3-Amino-5-methylisoxazole, N-trimethylsilyl-

3-Isoxazolamine, 5-methyl-N-(trimethylsilyl)-

XQZAMQVFBIDPPF-UHFFFAOYSA-N

Glycine, N-[4-[(trimethylsilyl)oxy]benzoyl]-, methyl ester

55638-48-7

DB-326952

Methyl ((4-[(trimethylsilyl)oxy]benzoyl)amino)acetate #

N-[4-(TRIMETHYLSILOXY)BENZOYL ]GLYCINE METHYL ESTER

S-[Tri-t-butoxysilyl]-2-mercaptoethylamine

DGCZHBIIRHUZRT-UHFFFAOYSA-N

2-([Tri(tert-butoxy)silyl]sulfanyl)ethylamine #

CXVHMMIMOMXHIK-UHFFFAOYSA-N

Silane, diethyl(2-heptyloxy)tetradecyloxy-

TETRADECAMETHYLCYCLOHEPTASILOXANE

107-50-6

Cyclomethicone 7

Cycloheptasiloxane, tetradecamethyl-

2,2,4,4,6,6,8,8,10,10,12,12,14,14-tetradecamethyl-1,3,5,7,9,11,13-heptaoxa-2,4,6,8,10,12,14-heptasilacyclotetradecane

tetradecamethyl cycloheptasiloxane

KCK5L8VU47

UNII-KCK5L8VU47

EINECS 203-496-9

Cycloheptasiloxane,2,2,4,4,6,6,8,8,10,10,12,12,14,14-tetradecamethyl-

Tetradecamethylcyclotetradecaneheptasiloxane

SCHEMBL375229

DTXSID8059348

CHEBI:87988

CYCLOHEPTASILOXANE [INCI]

MFCD30534308

AKOS028110683

J182.220I

NS00041292

T2678

T71579

Q27160005

2,2,4,4,6,6,8,8,10,10,12,12,14,14-Tetradecamethylcycloheptasiloxane

2,2,4,4,6,6,8,8,10,10,12,12,14,14-Tetradecamethylcycloheptasiloxane #

2,2,4,4,6,6,8,8,10,10,12,12,14,14-TETRADECAMETHYLCYCLOTETRADECANEHEPTASILOXANE

CYCLOHEPTASILOXANE, 2,2,4,4,6,6,8,8,10,10,12,12,14,14-TETRADECAMETHYL-

D-7

D7

DODECAMETHYLCYCLOHEXASILOXANE

540-97-6

Cyclohexasiloxane, dodecamethyl-

Cyclomethicone 6

2,2,4,4,6,6,8,8,10,10,12,12-dodecamethyl-1,3,5,7,9,11-hexaoxa-2,4,6,8,10,12-hexasilacyclododecane

XHK3U310BA

2,2,4,4,6,6,8,8,10,10,12,12-Dodecamethylcyclohexasiloxane

EINECS 208-762-8

UNII-XHK3U310BA

HSDB 7723

EC 208-762-8

dodecamethyl cyclohexasiloxane

SCHEMBL93785

XIAMETER PMX-0246

CYCLOHEXASILOXANE [INCI]

DTXSID6027183

IUMSDRXLFWAGNT-UHFFFAOYSA-

CHEBI:191103

CYCLOMETHICONE 6 [USP-RS]

MFCD00144215

CYCLOHEXASILOXANE, DODECAMETHYL

AKOS015839990

FS-5671

DODECAMETHYLCYCLOHEXASILOXANE [MI]

DODECAMETHYLCYCLOHEXASILOXANE [HSDB]

DB-008587

D2040

DODECAMETHYLCYCLOHEXASILOXANE [WHO-DD]

NS00042693

S08515

T71035

Dodecamethylcyclohexasiloxane, analytical standard

A914553

Q27293843

2,2,4,4,6,6,8,8,10,10,12,12-Dodecamethylcyclohexasiloxane #

Cyclohexasiloxane, 2,2,4,4,6,6,8,8,10,10,12,12-dodecamethyl-

2,2,4,4,6,6,8,8,10,10,12,12-Dodecamethylcyclohexasiloxane, 95%

2,2,4,4,6,6,8,8,10,10,12,12-Dodecamethylcyclohexasiloxane, AldrichCPR

Cyclomethicone 6, United States Pharmacopeia (USP) Reference Standard

2,2,4,4,6,6,8,8,10,10,12,12-dodecamethyl-1,3,5,7,9,11-hexaoxa-2,4,6,8,10,12-hexa

D-6

InChI=1/C12H36O6Si6/c1-19(2)13-20(3,4)15-22(7,8)17-24(11,12)18-23(9,10)16-21(5,6)14-19/h1-12H3

The Henry's Law constant for dodecamethylcyclohexasiloxane is 25.0 atm-cu m/mole(1). This Henry's Law constant indicates that dodecamethylcyclohexasiloxane 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 6.2 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 8.4 days(SRC). However, volatilization from water surfaces is expected to be attenuated by adsorption to suspended solids and sediment in the water column. The estimated volatilization half-life from a model pond is >1 year if adsorption is considered(3). The Henry's Law constant for dodecamethylcyclohexasiloxane indicates that volatilization from moist soil surfaces is expected(SRC). Dodecamethylcyclohexasiloxane is a volatile methylsiloxane that favors partitioning into the atmosphere(4); therefore, dodecamethylcyclohexasiloxane is expected to volatilize from dry soil surfaces(SRC) even with a vapor pressure of 0.0169 mm Hg(5). Evaporation of dodecamethylcyclohexasiloxane was measured in soil studies and found to occur with rates varying with moisture content, soil type and relative humidity(6). Volatilization from soil may be the major loss process under certain moist conditions(7).

Using a structure estimation method based on molecular connectivity indices(1), the Koc of dodecamethylcyclohexasiloxane can be estimated to be 870,000(SRC). According to a classification scheme(2), this estimated Koc value suggests that dodecamethylcyclohexasiloxane is expected to be immobile in soil.

DECAMETHYLCYCLOPENTASILOXANE

541-02-6

Cyclopentasiloxane, decamethyl-

Cyclomethicone 5

2,2,4,4,6,6,8,8,10,10-Decamethyl-1,3,5,7,9,2,4,6,8,10-pentaoxapentasilecane

CYCLOPENTASILOXANE

Dimethylsiloxane pentamer

Dekamethylcyklopentasiloxan

Dow corning 345

NUC silicone VS 7158

Silicon SF 1202

Ciclopentasiloxane

Cyclic dimethylsiloxane pentamer

Cyclomethicone D5

D5-sil

KF 995

CCRIS 1328

VS 7158

HSDB 5683

UNII-0THT5PCI0R

0THT5PCI0R

Ddecamethylcyclopentasiloxane

EINECS 208-764-9

SF 1202

BRN 1800166

DTXSID1027184

JEESILC CPS-211

XIAMETER PMX-0245

DTXCID907184

CYCLOPENTASILOXANE (D5)

D5

EC 208-764-9

4-04-00-04128 (Beilstein Handbook Reference)

KF-995

DOW CORNING ST CYCLOMETHICONE 5

OCTAMETHYLCYCLOTETRASILOXANE (D5)

KP-545 COMPONENT CYCLOMETHICONE 5

2,2,4,4,6,6,8,8,10,10-decamethyl-1,3,5,7,9,2,4,6,8,10-pentoxapentasilecane

Cyclopentasiloxane, 2,2,4,4,6,6,8,8,10,10-decamethyl-

CYCLOMETHICONE 5 (USP-RS)

CYCLOMETHICONE 5 [USP-RS]

MFCD00046966

Dekamethylcyklopentasiloxan [Czech]

decamethyl cyclopentasiloxane

C10H30O5Si5

Lightening Serum

D5 Cyclomethicone

dimethylcyclopentasiloxane

Decamethylcylopentasiloxane

UNII: 0THT5PCI0R

SCHEMBL28497

N-Propylheptamethyltrisiloxane

CHEMBL1885178

CYCLOPENTASILOXANE [INCI]

3CE PINK IM GOOD MASCARA

CHEBI:191092

Decamethylcyclopentasiloxane, 97%

CYCLOMETHICONE 5 [WHO-DD]

BCP15826

Tox21_303170

CD3770

CYCLOPENTASILOXANE, DECAMETHYL

AKOS008901199

CS-W009767

DB11244

HY-W009051

MCULE-6274880347

DECAMETHYLCYCLOPENTASILOXANE [MI]

NCGC00163981-01

NCGC00257224-01

AS-59731

CAS-541-02-6

DECAMETHYLCYCLOPENTASILOXANE [HSDB]

D1890

D3770

Decamethylcyclopentasiloxane (cyclic monomer)

NS00043162

D78203

S05475

Decamethylcyclopentasiloxane, analytical standard

Q414350

decamethyl-1,3,5,7,9,2,4,6,8,10-pentaoxapentasilecane

Cyclomethicone 5, United States Pharmacopeia (USP) Reference Standard

2,2,4,4,6,6,8,8,10,10-Decamethyl-1,3,5,7,9,2,4,6,8,10-pentaoxapentasilecane #

D5 Cyclomethicone, Pharmaceutical Secondary Standard; Certified Reference Material

The Henry's Law constant for decamethylcyclopentasiloxane is 33.0 atm-cu m/mole(1). This Henry's Law constant indicates that decamethylcyclopentasiloxane 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 5.6 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 7.6 days(SRC). However, volatilization from water surfaces is expected to be attenuated by adsorption to suspended solids and sediment in the water column. The estimated volatilization half-life from a model pond is 3.8 years if adsorption is considered(3). Decamethylcyclopentasiloxane's Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). However, adsorption to soil is expected to attenuate volatilization(SRC). Decamethylcyclopentasiloxane is a volatile methylsiloxane that favors partitioning into the atmosphere(4); therefore, decamethylcyclopentasiloxane is expected to volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 0.3 mm Hg(5). Evaporation of decamethylcyclopentasiloxane was measured in soil studies and found to occur with rates varying with moisture content, soil type and relative humidity(6). 14C-labeled decamethylcyclopentasiloxane was removed from municipal waste by both adsorption to sludge and volatilization(7); the majority of the material was removed via volatilization; after 3 days, 40% of the material in the aeration/secondary clarifier was removed by volatilization(7). From its use in cosmetic products, decamethylcyclopentasiloxane is reported to evaporate from skin or hair within 4-12 hours after application(8).

Adsorption studies using three soils from the United Kingdom (silt loam, sandy loam and sandy clay loam) determined decamethylcyclopentasiloxane log Koc values of 4.98-5.29 with an average log Koc of 5.17 (Koc of 1.48X10+5)(1). According to a classification scheme(2), these Koc values suggest that decamethylcyclopentasiloxane is expected to be immobile in soil.