Agrochemicals

Sodium 2,4,6-Trichlorophenolate (CAS No. 3784-03-0) 

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1. Basic Information

• IUPAC Name: Sodium 2,4,6-trichlorophenolate
• Synonyms:
  • TCP-Na
  • 2,4,6-Trichlorophenol sodium salt
• CAS Number: 3784-03-0
• Molecular Formula: C₆H₂Cl₃NaO
• Molecular Weight: 221.43 g/mol
• Appearance: White to tan crystalline powder
• Odor: Phenolic odor

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2. Physical and Chemical Properties

Property	Value
Melting Point	>300°C (dec.)
Solubility (25°C)	– Water: Highly soluble (500 g/L)
	– Organic solvents: Insoluble in ether, hexane
pH (1% solution)	8.0–10.0 (alkaline)
Stability	Hygroscopic; decomposes under UV light

 

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3. Hazards (GHS Classification)

• Acute Toxicity:
  • Harmful if swallowed (H302)
  • Causes skin irritation (H315)
  • Causes serious eye damage (H318)
• Environmental:
  • Very toxic to aquatic life (H400)
  • Persistent and bioaccumulative (H413)
• NFPA Rating: Health 3, Flammability 1, Reactivity 0

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4. Storage and Handling

• Storage:
  • Keep in airtight containers protected from light
  • Store in a cool, dry, well-ventilated area
• Handling:
  • Use nitrile gloves, safety goggles, and a fume hood
  • Avoid dust generation

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5. Applications

• Preservative:
  • Wood preservative (historically used, now restricted)
• Biocide:
  • Antimicrobial agent in industrial systems (limited use)
• Chemical Intermediate:
  • Synthesis of higher chlorinated phenols

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