Hexamethylcyclotrisiloxane
[CAS# 541-05-9]

Identification

• Classification: Organic raw materials >> Hydrocarbon compounds and their derivatives >> Cyclic hydrocarbon
• Name: Hexamethylcyclotrisiloxane
• Molecular Formula: C₆H₁₈O₃Si₃
• Molecular Weight: 222.46
• CAS Registry Number: 541-05-9
• EC Number: 208-765-4

Properties

• Melting point: 63-67 ºC
• Boiling point: 134 ºC
• Flash point: 35 ºC
• Water solubility: may decompose

Safety Data

• Hazard Symbols: F;Xi
• Risk Codes: R11;R36/37/38
• Safety Description: S26

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Flammable solids	Flam. Sol.	1	H228
Eye irritation	Eye Irrit.	2	H319
Specific target organ toxicity - single exposure	STOT SE	3	H335
Skin irritation	Skin Irrit.	2	H315
Flammable solids	Flam. Sol.	2	H228

• Transport Information: UN 1325