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1,1,1,3,5,5,5-Heptamethyltrisiloxane

1,1,1,3,5,5,5-Heptamethyltrisiloxane / CAS : 1873-88-7

Appearance colorless liquid UN 1993
HS 29319000 DG Class 3
Synonyms Bis(Trimethylsiloxy)Methylsilane; Trisiloxane, 1,1,1,3,5,5,5-Heptamethyl-; Methyl-Bis(Trimethylsilyloxy)Silicon; Methicone; Methylpolysilicone; Heptamethyl Trisiloxane; Poly Methyl Hydrogen Siloxane; Di(Trimethylsiloxy)Methylsilane; Poly(Methyl Hydrogen Siloxane)
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Properties

Summary

Formula
C7H22O2Si3
Molecular Mass
222.50500
Exact Mass
222.09300
PSA
18.46000
Logp
2.53970
IUPAC
Bis(trimethylsiloxy)methylsilane
SMILES
C[Si](O[Si](C)(C)C)O[Si](C)(C)C

Attribute classification

Matter Classification
organic

Chemical and Physical Properties

Melting Point
<0 ºC
Density
0.819 g/mL
Boiling Point
142 °C(lit.)
Flash Point
82 °F
Appearance
colorless liquid
Acidity and Basicity
neutral

Export information

HS Code
29319000
Export Rebate
13%
UN No.
1993
DG-Class
3
Risk Code
R10-36/37/38
Safety Label
Xi

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