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Octamethyltrisiloxane Structure

Octamethyltrisiloxane

Chemical Properties

Melting point -82 °C (lit.)
Boiling point 153 °C (lit.)
Density  0.82 g/mL at 25 °C (lit.)
vapor density  >1 (vs air)
vapor pressure  5.3hPa at 25℃
refractive index  n20/D 1.384(lit.)
Flash point 99 °F
storage temp.  Inert atmosphere,Room Temperature
solubility  Chloroform (Slightly), DMSO, Methanol (Slightly)
form  liquid
Specific Gravity 0.82
color  Colourless to Pale Yellow
Viscosity 0.842mm2/s
Water Solubility  34μg/L at 23℃
Hydrolytic Sensitivity 1: no significant reaction with aqueous systems
Merck  14,6748
BRN  1753063
Dielectric constant 2.3(20℃)
Stability Hygroscopic
LogP 6.6 at 25.3℃
CAS DataBase Reference 107-51-7(CAS DataBase Reference)
EWG's Food Scores 2
FDA UNII 9G1ZW13R0G
EPA Substance Registry System Trisiloxane, octamethyl- (107-51-7)

Safety

Symbol(GHS)
Signal wordWarning
Hazard statements H226
Precautionary statements P210-P233-P240-P241-P242-P243
Risk Statements  10
Safety Statements  23-24/25
RIDADR  UN 1993 3/PG 3
WGK Germany  3
10-21
TSCA  Yes
HazardClass  3.2
PackingGroup  III
HS Code  29319090
NFPA 704:
2
2 0

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