Hexachlorodisiloxane
[CAS# 14986-21-1]

Identification

• Classification: Chemical reagent >> Organic reagent >> Siloxane
• Name: Hexachlorodisiloxane
• Synonyms: Trichloro(trichlorosilyloxy)silane
• Molecular Formula: Cl₆OSi₂
• Molecular Weight: 284.89
• CAS Registry Number: 14986-21-1
• EC Number: 239-070-4
• SMILES: O([Si](Cl)(Cl)Cl)[Si](Cl)(Cl)Cl

Properties

• Solubility: 3.524 mg/L (25 °C water)
• Density: 1.6±0.1 g/cm³, Calc.^*
• Index of Refraction: 1.488, Calc.^*
• Melting point: 229.05 °C
• Boiling Point: 549.64 °C, 136.8±9.0 °C (760 mmHg), Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software.

Safety Data

• Hazard Symbols: GHS02;GHS05 Danger

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Skin corrosion	Skin Corr.	1B	H314
Flammable liquids	Flam. Liq.	2	H225
Specific target organ toxicity - single exposure	STOT SE	3	H335
Skin corrosion	Skin Corr.	1A	H314