| Formula / Notation | SOCl2 |
|---|---|
| CAS Number | 7719-09-7 |
| Molecular Weight | 118.97 |
| Melting Point | -156 °F (NIOSH, 2024) |
| Boiling Point | 169 °F at 760 mmHg (NIOSH, 2024) |
| Density | 1.64 (NIOSH, 2024) - Denser than water; will sink |
| Solubility | Reacts with water (NIOSH, 2024) |
| Appearance | Thionyl chloride appears as a colorless to yellow fuming liquid with a suffocating pungent odor. Boiling point 79 °C. A lachrymator. Highly corrosive and toxic. Long-term inhalation of low concent... |
| Also Known As | thionyl dichloride; Thionyl dichloride; 7719-09-7; Sulfinyl chloride; Sulfurous dichloride; Sulfurous oxychloride; Sulfinyl dichloride; Sulfur oxychloride; Sulfur chloride oxide; Sulfur chloride oxide (Cl2SO) |
| Category | Laboratory Reagents |
What is Thionyl chloride?
Thionyl chloride is a sulfinyl halide in which both of the halide atoms are chorines. It is a chlorine molecular entity and a sulfinyl halide.
Formula & Notation
IUPAC Name: thionyl dichloride
Other Names / Synonyms: thionyl dichloride; Thionyl dichloride; 7719-09-7; Sulfinyl chloride; Sulfurous dichloride; Sulfurous oxychloride; Sulfinyl dichloride; Sulfur oxychloride; Sulfur chloride oxide; Sulfur chloride oxide (Cl2SO)
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | -156 °F (NIOSH, 2024) |
| Boiling Point | 169 °F at 760 mmHg (NIOSH, 2024) |
| Density | 1.64 (NIOSH, 2024) - Denser than water; will sink |
| Molecular Weight | 118.97 |
| Solubility | Reacts with water (NIOSH, 2024) |
| Appearance | Thionyl chloride appears as a colorless to yellow fuming liquid with a suffocating pungent odor. Boiling point 79 °C. A lachrymator. Highly corrosive and toxic. Long-term inhalation of low concent... |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Thionyl chloride is a sulfinyl halide in which both of the halide atoms are chorines. It is a chlorine molecular entity and a sulfinyl halide.
Used as a synthetic reagent for transformations including oxidation, reduction, coupling, or functional group manipulation.
Hazardous reagent. May be toxic, corrosive, flammable, or reactive. Use in fume hood with full PPE. Consult SDS before use.
The formula or notation for Thionyl chloride is: SOCl2