1-Naphthylamine

1-Naphthylamine

Chemical Name: 1-Naphthylamine; α-Naphthylamine
Synonyms: 1-Aminonaphthalene; alpha-Naphthylamine
CAS Number: 134-32-7
Molecular Formula: C₁₀H₉N
Molecular Weight: 143.19 g/mol

Physical and Chemical Properties

Appearance: White to reddish crystalline solid (turns purple/black on air exposure)Odor: Slight aromatic amine odorMelting Point: 50 °C (122 °F)Boiling Point: 300 °C (572 °F)Density: 1.13 g/cm³ (at 20 °C)Vapor Pressure: 0.001 mmHg (at 25 °C)Solubility:Slightly soluble in water (0.17 g/L at 20 °C).Soluble in ethanol, ether, benzene.

Chemical Properties

Reactivity:Forms salts with acids (e.g., hydrochloride).Oxidizes in air (darkens over time).Reacts with nitrous acid to form carcinogenic diazonium compounds.Stability: Light-sensitive; store under inert atmosphere.

Hazard and Safety Information (GHS)

Hazard Symbols: H351 (Suspected carcinogen), H410 (Very toxic to aquatic life)Hazard Statements:H302: Harmful if swallowed.H351: Suspected of causing cancer (Group 2B, IARC).H410: Very toxic to aquatic life with long-lasting effects.Precautionary Measures:P201: Obtain special instructions before use.P281: Use personal protective equipment.P308+P313: IF exposed or concerned: Get medical advice.

Storage & Handling

Store in amber glass bottles under nitrogen/argon to prevent oxidation.Keep away from light, heat, and oxidizing agents.Use gloves (nitrile), lab coat, and fume hood (potential carcinogen).

Applications

Dye intermediate (azo dyes, pigments).Rubber antioxidant production.Research chemical (historically used in pesticide synthesis).

Disclaimer:

The above content is for reference and communication only among industry insiders, and does not guarantee its accuracy or completeness. According to relevant laws and regulations and the regulations of this website, units or individuals who purchase related items should obtain valid qualifications and qualification conditions.

Declaration: The products displayed on this website are intended exclusively for industrial applications or scientific research. They are not intended for medical, pharmaceutical, or food use. In accordance with applicable laws and regulations, purchasing organizations must hold valid qualifications and approvals.