Thionyl Chloride
Thionyl Dichloride, Sulfinyl Chloride, SOCl2.
- CAS
- 7719-09-7
- EC
- 231-748-8
- Sectors
- Pharma & Healthcare, Electronics & Solar PV, Agriculture
Thionyl Chloride (CAS 7719-09-7) is a high-purity inorganic liquid chlorinating agent, supplied in Technical Grade with a 99.5% purity level and a pale yellow color, used to convert carboxylic acids into acid chlorides in pharmaceutical synthesis and as the electrolyte solvent in lithium thionyl chloride batteries. It is one of the most powerful chlorinating agents used in modern organic chemistry.
The product maintains a 99.5% Purity level, which is essential for the production of lithium thionyl chloride (Li-SOCl2) batteries. It reacts violently with water to produce toxic gases, requiring specialized Anhydrous Handling protocols.
In the pharmaceutical sector, it is indispensable for converting carboxylic acids into acid chlorides and alcohols into alkyl chlorides. This Specialty Chemical is a foundational building block for the synthesis of vitamins and drugs.
Typical Properties
| Molecular formula | Cl2OS |
|---|---|
| Molecular weight | 118.97 g/mol |
| Form | Liquid |
| Color | ≤50(APHA) |
| Odor | Characteristic, pungent odor |
| Melting point | -104.5 °C |
| Boiling point | 76 °C @ Press: 760 Torr |
| Density | 1.638 g/cm³ @ Temp: 20 °C |
| Water solubility | REACTS |
| Flash point | 105°C |
| HS code | 28121095 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Thionyl Chloride
Applications
- Battery Manufacturing: Acts as the cathode and electrolyte solvent in high-energy-density lithium thionyl chloride batteries.
- Pharmaceutical Synthesis: Critical reagent for the production of various APIs, specifically for chlorination and dehydration reactions.
- Agrochemical Production: Used as a key intermediate in the synthesis of high-potency herbicides and insecticides.
Safety & Risks
Classified as Acute Tox. 3 (Inhal), Skin Corr. 1A, and Reacts Violently with Water. Wear Full Acid Suit and SCBA.
Packaging
300 kg Steel Drums, 1500 kg IBC Tanks, or ISO Container tanks.