Dodecamethylpentasiloxane Structure

Dodecamethylpentasiloxane

Chemical Properties

Melting point -81 °C (lit.)
Boiling point 230 °C (lit.)
Density  0.875 g/mL at 25 °C (lit.)
vapor pressure  <1 mm Hg ( 20 °C)
refractive index  n20/D 1.392(lit.)
Flash point 187 °F
storage temp.  Refrigerator
solubility  Benzene (Slightly), Ethyl Acetate (Slightly), Methanol (Slightly)
form  liquid
Specific Gravity 0.876
color  Colourless
Viscosity 1.7mm2/s
Water Solubility  70.41ng/L at 23℃
Hydrolytic Sensitivity 1: no significant reaction with aqueous systems
Merck  14,3404
Henry's Law Constant 8.7×10-8 mol/(m3Pa) at 25℃, Mazzoni et al. (1997)
Dielectric constant 2.5(20℃)
Cosmetics Ingredients Functions ANTIFOAMING
InChI 1S/C12H36O4Si5/c1-17(2,3)13-19(7,8)15-21(11,12)16-20(9,10)14-18(4,5)6/h1-12H3
InChIKey FBZANXDWQAVSTQ-UHFFFAOYSA-N
SMILES C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C
LogP 9.411 at 25℃
CAS DataBase Reference 141-63-9(CAS DataBase Reference)
EWG's Food Scores 2
FDA UNII 0QDQ2VQ5YJ
EPA Substance Registry System Pentasiloxane, dodecamethyl- (141-63-9)
UNSPSC Code 12352103
NACRES NA.22

Safety

Symbol(GHS) Exclamation Mark (GHS07)
Signal wordWarning
Hazard statements H315-H319-H335
Precautionary statements P261-P264-P271-P280-P302+P352-P305+P351+P338
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-36
RIDADR  NA 1993 / PGIII
WGK Germany  3
RTECS  SB0970000
TSCA  TSCA listed
HS Code  2931.90.9010
Storage Class 10 - Combustible liquids
Hazardous Substances Data 141-63-9(Hazardous Substances Data)
Toxicity guinea pig,LDLo,oral,50gm/kg (50000mg/kg),Journal of Industrial Hygiene and Toxicology. Vol. 30, Pg. 332, 1948.

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