| Product name | Thionyl chloride |
| Molecular formula | SOCl2 |
| Molecular weight | 118.97 |
| CAS NO | 7719-09-7 |
| Properties | Colorless or light yellow irritant odor transparent liquid, density 1.64g / ml, melting point -105 oC, boiling point 78.8 oC, soluble in benzene, chloroform and carbon tetrachloride, water easily decomposed into sulfur dioxide and hydrogen chloride. Heated to 150 °C to begin to decompose. |
| Uses | As a chlorinating agent, mainly used in medicine, pesticides, dyes and organic synthesis industry. |
| Executive standard | HG/T3788-2013 |