Stannic Chloride Anhydrous
Tin Tetrachloride, Tin(IV) Chloride, SnCl4.
- CAS
- 7646-78-8
- EC
- 231-588-9
- Sectors
- Plastics & Polymers, Coatings, Adhesives, Sealants & Elastomers
Stannic Chloride Anhydrous (CAS 7646-78-8) is a colorless, fuming liquid and a powerful Lewis acid that serves as a high-purity source of tin(IV) for industrial reactions, including tin oxide glass coatings, polymerization catalysis and organotin synthesis. The product is critical in the Glass Industry , where it is used to apply ultra-thin, conductive, or toughening coatings of tin oxide onto glass containers. Its high volatility and reactivity allow for uniform vapor-phase deposition, enhancing the mechanical strength of glassware. In the polymer industry, it functions as a potent catalyst for the production of styrene and other specialized resins. Its ability to act as a mordant in the textile sector and its role in producing organotin compounds make it a highly versatile yet demanding chemical reagent.
Typical Properties
| Molecular formula | Cl4Sn |
|---|---|
| Molecular weight | 260.52 g/mol |
| Form | Solution |
| Color | Colorless |
| Melting point | -33 °C |
| Boiling point | 114.15 °C |
| Density | 2.34 g/cm³ |
| Water solubility | reacts |
| Flash point | 34 °F |
| pH | 0.2 (60g/l, H2O, 20°C)Hydrolysis |
| GHS signal word | Danger · Corrosive, Acute toxicity, Irritant / harmful, Health hazard |
| HS code | 28273990 |
| 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.
Stannic Chloride Anhydrous
Applications
- Glass Coating: Applied via chemical vapor deposition (CVD) to create a protective tin oxide layer that prevents scratching and strengthens glass bottles.
- Polymerization Catalyst: Serves as a Lewis acid catalyst in the manufacture of various polymers, resins, and specialized coatings.
- Organic Synthesis: Used in the synthesis of organotin compounds and as a reagent in Friedel-Crafts and related acylation reactions.
Safety & Risks
Classified as Hazard Class 8 (Corrosive). Reacts violently with water to form Hydrochloric Acid Fumes; handle in a Fume Hood using Acid-Resistant PPE.
Packaging
50 kg Steel Drums and 250 kg Specialized UN-Approved Containers.