Agrochemicals

Chlorotriphenyltin (CAS No. 639-58-7) 

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1. Basic Information

• IUPAC Name: Chlorotriphenylstannane
• Synonyms:
  • Triphenyltin chloride
  • Fentin chloride
  • TPTC
• CAS Number: 639-58-7
• Molecular Formula: C₁₈H₁₅ClSn
• Molecular Weight: 385.47 g/mol
• Appearance: White crystalline powder
• Odor: Odorless

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2. Physical and Chemical Properties

Property	Value
Melting Point	103–106°C (217–223°F)
Solubility	– Water: Insoluble
	– Organic solvents: Soluble in benzene, chloroform, acetone
Density	1.49 g/cm³ (20°C)
Vapor Pressure	<0.1 mPa at 25°C

 

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3. Hazards (GHS Classification)

• Acute Toxicity:
  • Fatal if swallowed (H300)
  • Fatal in contact with skin (H310)
  • Fatal if inhaled (H330)
• Environmental:
  • Very toxic to aquatic life (H410)
  • Persistent and bioaccumulative (H413)
• NFPA Rating: Health 4, Flammability 1, Reactivity 1

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4. Storage and Handling

• Storage:
  • Keep in tightly sealed containers under inert gas
  • Store in a cool, dry, well-ventilated area (2–8°C recommended)
• Handling:
  • Use full-face respirator with organic vapor cartridge
  • Wear chemical-resistant suit and neoprene gloves
  • Handle only in fume hood with ≥100 fpm face velocity

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5. Applications

• Agrochemicals:
  • Fungicide for potatoes and sugar beets (banned in many countries)
• Industrial:
  • PVC stabilizer (historical use)
• Research:
  • Catalyst in organic synthesis

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