Stannic Chloride

Stannic Chloride

CAS Number:7646‑78‑8 (anhydrous)

Synonyms:Stannic chloride; Tin(IV) chloride; Tin tetrachloride

Chemical Formula:SnCl₄

Molecular Weight:260.52 g/mol

Product Introduction

A colorless, fuming, hygroscopic liquid that fumes on exposure to air. Used as a Lewis acid catalyst in Friedel–Crafts reactions, polymerization catalysis, as a precursor to other tin compounds, and in metal-organic chemical vapor deposition

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Physical & Chemical Properties

Property Value
Appearance Clear, fuming liquid; may appear slightly yellow
Odor Sharp, acrid, lachrymatory
Density @ 20 °C 2.226 g/cm³
Melting Point –33 °C
Boiling Point 114.1 °C
Vapor Pressure @ 20 °C ~18 mm Hg
Solubility Hydrolyzes in water; soluble in alcohols, ethers, chlorinated solvents

Applications

  • Lewis acid catalyst:Friedel–Crafts acylations/alkylations, polymerization
  • Intermediate:manufacture of tin-based organometallics and tin dioxide films
  • Precursor in electronics:CVD/PVD for semiconductor processing

Safety & Handling

  • Highly corrosive and irritant; fumes intensely upon exposure. GHS: H314, H400. NFPA: Health 3, Fire 0, Reactivity 1. Use full PPE in a fume hood. Store sealed in glass-lined containers, away from moisture and organics (UN 1827, Class 8 PG II).

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