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Aniline

CAS Number:62‑53‑3

Synonyms:Aniline; Aminobenzene; Phenylamine; Aniline oil

Chemical Formula:C₆H₇N

Molecular Weight: 93.13 g/mol

Product Introduction

A colorless to pale-yellow oily liquid with a characteristic “rotten fish” odor. A key industrial intermediate used in the production of dyes, polyurethane precursors, rubber chemicals, antioxidant manufacture, and analytical reagents.

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Physical & Chemical Properties

Property	Value
Appearance	Colorless to pale-yellow oily liquid
Odor	Fishy/ammoniacal
Density @ 20 °C	~1.029 g/cm³
Melting Point	–6.3 °C
Boiling Point	~184.1–184.4 °C
Solubility in Water	~3.6 g/100 mL @20 °C
Vapor Pressure @ 25 °C	~0.6–0.7 mm Hg
Flash Point	70 °C (closed cup)
NFPA Ratings	Health 3, Fire 2, Reactivity 0
Vapor Density	~3.22× air

Applications

Industrial intermediate:for dyes, polyurethane, rubber accelerators, and antioxidants
Analytical reagent:solvent and indicator in labs
Pharmaceutical precursors:used in APIs and drug intermediate synthesis

Safety & Handling

Highly toxic and moderately flammable. Classified as a potential occupational carcinogen. OSHA PEL: 5 ppm TWA; IDLH: 100 ppm. Causes severe skin, eye, and respiratory irritation; may form explosive vapor–air mixtures. Store sealed in cool, dark environment away from oxidizers and acids; handle under fume hood, with full PPE and gas monitoring.