Agrochemicals

4-Methyl-3-nitropyridine (CAS No. 23056-36-2)

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1. Basic Information

• IUPAC Name: 4-Methyl-3-nitropyridine
• Synonyms:
  • 3-Nitro-4-picoline
  • 3-Nitro-4-methylpyridine
• CAS Number: 23056-36-2
• Molecular Formula: C₆H₆N₂O₂
• Molecular Weight: 138.12 g/mol
• Appearance: Light yellow to tan crystalline powder
• Odor: Characteristic nitroaromatic odor

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2. Physical and Chemical Properties

Property	Value
Melting Point	52–55°C (126–131°F)
Boiling Point	265–267°C (509–513°F)
Density	1.25 g/cm³ (20°C)
Solubility	– Water: Slightly soluble
	– Organic solvents: Soluble in ethanol, acetone, chloroform
Refractive Index	1.548 (20°C)
Flash Point	115°C (239°F) (closed cup)

 

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3. Hazards (GHS Classification)

• Health Hazards:
  • Harmful if swallowed (H302)
  • Causes skin irritation (H315)
  • Causes serious eye irritation (H319)
• Environmental: Toxic to aquatic life (H411)
• NFPA Rating: Health 2, Flammability 1, Reactivity 1

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4. Storage and Handling

• Storage:
  • Keep in tightly sealed amber containers
  • Store in a cool, dry, well-ventilated area
• Handling:
  • Use nitrile gloves, safety goggles, and fume hood
  • Avoid contact with strong oxidizers

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5. Applications

• Pharmaceutical Intermediate: Synthesis of vasodilators and antihypertensive drugs
• Agrochemicals: Precursor for pyridine-based pesticides
• Organic Synthesis: Building block for heterocyclic compounds

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