Pentamethyldisiloxane , 95% , 1438-82-0

CAS NO.：1438-82-0

Empirical Formula: C5H16OSi2

Molecular Weight: 148.35

MDL number: MFCD00053658

EINECS: 215-873-5

PRODUCT Properties

• Boiling point: 86 °C (lit.)
• Density: 0.760 g/mL at 20 °C (lit.)
• refractive index: n20/D 1.373
• Flash point: -9°C
• form: clear liquid
• Specific Gravity: 0.758
• color: Colorless to Almost colorless
• Water Solubility: Not miscible or difficult to mix in water.
• Hydrolytic Sensitivity: 3: reacts with aqueous base
• Sensitive: Moisture Sensitive
• BRN: 1734568
• InChI: InChI=1S/C5H16OSi2/c1-7(2)6-8(3,4)5/h7H,1-5H3
• InChIKey: AOJHDNSYXUZCCE-UHFFFAOYSA-N
• SMILES: [Si](C)(C)(C)O[SiH](C)C
• EPA Substance Registry System: Disiloxane, pentamethyl- (1438-82-0)

Description and Uses

Pentamethyldisiloxane is used in the synthesis of siloxane-polyether copolymer surfactants. It is also used as source of trimethylsilyl functional group in organic synthesis.

Safety

• Symbol(GHS): GHS02
• Signal word: Danger
• Hazard statements: H225
• Precautionary statements: P210
• Hazard Codes: F
• Risk Statements: 11
• Safety Statements: 16-23-24/25
• RIDADR: UN 1993 3/PG 2
• WGK Germany: 3
• F: 10-21
• TSCA: Yes
• HazardClass: 3
• PackingGroup: II
• HS Code: 29319090