1,1,1,3,3-Pentamethyldisiloxane
[CAS# 1438-82-0]

Identification

• Classification: Chemical reagent >> Silane reagent
• Name: 1,1,1,3,3-Pentamethyldisiloxane
• Synonyms: Dimethyl(trimethylsilyloxy)silane; Pentamethyldisiloxane; Trimethylsiloxydimethylsilane
• Molecular Formula: C₅H₁₆OSi₂
• Molecular Weight: 148.35
• CAS Registry Number: 1438-82-0
• EC Number: 215-873-5

Properties

• Solubility: Very slightly soluble (0.19 g/L) (25 ºC), Calc.^*
• Density: 0.7608 g/cm³ (20 ºC)^**
• Refractive index: 1.3789 (589.3 nm 20 ºC)^***

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2015 ACD/Labs)

^** Greber, Gerd; DE 1085875 1960.

^*** Muller, Rich.; Journal fuer Praktische Chemie (Leipzig) 1960, V11, P336-40.

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Flammable liquids	Flam. Liq.	2	H225