3-Chloroaniline CAS No.108-42-9

3-Chloroaniline (CAS No. 108-42-9) 

1. Basic Information

Chemical Name: 3-ChloroanilineSynonyms: m-Chloroaniline; 3-Chlorobenzenamine; 1-Amino-3-chlorobenzeneCAS Number: 108-42-9Molecular Formula: C₆H₆ClNMolecular Weight: 127.57 g/molAppearance: Colorless to pale yellow liquid (turns brown on exposure to air/light)Odor: Amine-like (fishy) odorOdor Threshold: ~0.1 ppm

2. Physical and Chemical Properties

Melting Point: -10°C (14°F)Boiling Point: 230-231°C (446-448°F)Density: 1.216 g/cm³ at 20°CSolubility:Water: 5 g/L (20°C)Organic solvents: Miscible with ethanol, ether, acetoneVapor Pressure: 0.03 mmHg at 20°CFlash Point: 97°C (207°F) (closed cup)Refractive Index: 1.593 at 20°C

3. Hazards (GHS Classification)

Acute Toxicity: Toxic if swallowed/inhaled (H301+H311+H331)Skin Corrosion/Irritation: Causes skin irritation (H315)Serious Eye Damage: Causes eye irritation (H319)Sensitization: May cause skin allergy (H317)Environmental Hazards: Toxic to aquatic life (H411)NFPA Rating: Health 3, Flammability 1, Reactivity 0

4. Storage and Handling

Storage:Amber glass bottles under inert gas (N₂)Store at 2-8°C protected from lightHandling:PPE: Nitrile gloves, vapor respirator, chemical gogglesWork in fume hood with <50 ppm exposure control

5. Applications

Dye Intermediate: Production of azo dyes and pigmentsPharmaceuticals: Precursor for sulfa drugsAgrochemicals: Synthesis of herbicides/pesticides

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