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141-63-9

Name DODECAMETHYLPENTASILOXANE
CAS 141-63-9
EINECS(EC#) 205-492-2
Molecular Formula C12H36O4Si5
MDL Number MFCD00039795
Molecular Weight 384.84
MOL File 141-63-9.mol
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Chemical Properties

Appearance clear colorless liquid
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.)
Fp  187 °F
storage temp.  Refrigerator
solubility  Benzene (Slightly), Ethyl Acetate (Slightly), Methanol (Slightly)
form  liquid
color  Colourless
Specific Gravity 0.876
Water Solubility  70.41ng/L at 23℃
Hydrolytic Sensitivity 1: no significant reaction with aqueous systems
Merck  13,3438
Dielectric constant 2.5（20℃）
LogP 9.411 at 25℃
CAS DataBase Reference 141-63-9(CAS DataBase Reference)
EPA Substance Registry System Pentasiloxane, dodecamethyl- (141-63-9)
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Safety Data

Hazard Codes  Xi
Risk Statements 
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
RIDADR  NA 1993 / PGIII
WGK Germany  3
RTECS  SB0970000
TSCA  Yes
HS Code  2931.90.9010
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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