1-[(2,5-dimethoxyphenyl)azo]-2-naphthol

To color orange skins.

2,5-Dimethoxyaniline diazotization, and Naphthalen-2-ol coupling.

ChEBI: Citrus Red No.2 is a member of azobenzenes.

Orange to yellow solid or dark red powder.

Azo dyes can be explosive when suspended in air at specific concentrations. Insoluble in water.

1-[(2,5-dimethoxyphenyl)azo]-2-naphthol is an azo compound. Toxic gases are formed by mixing compounds containing azo groups with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. Flammable gases are formed by mixing materials in this group with alkali metals. Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides.

Possible carcinogen.

ACUTE/CHRONIC HAZARDS: When heated to decomposition it emits toxic fumes of NOx.

Flash point data for 1-[(2,5-dimethoxyphenyl)azo]-2-naphthol are not available. 1-[(2,5-dimethoxyphenyl)azo]-2-naphthol is probably combustible.

Confirmed carcinogen with experimental carcinogenic data. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx

orange to red. Melting point of 155 ~ 157 ℃. Slightly soluble in water, slightly soluble in ethanol and rape oil.