1,1,3,3,5,5,7,7-Octamethyltetrasiloxane
[CAS# 1000-05-1]

Identification

• Classification: Chemical reagent >> Silane reagent
• Name: 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane
• Synonyms: Octamethyltetrasiloxane
• Molecular Formula: C₈H₂₆O₃Si₄
• Molecular Weight: 282.63
• CAS Registry Number: 1000-05-1
• EC Number: 213-669-0

Properties

• Solubility: Insoluble (1.5E^-3 g/L) (25 ºC), Calc.^*
• Density: 0.8640 g/cm³ (20 ºC), Calc.^**
• Boiling point: 190 ºC (100 Torr)^***
• Refractive index: 1.3877 (20 ºC)^**
• Flash point: 77.8±22.6 ºC, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2013 ACD/Labs)

^** Lebedev, E. P.; Zhurnal Obshchei Khimii 1979, V49(1), P147-50.

^*** Greber, Gerd; DE 1085875 1960.

Safety Data

Hazard Classification

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