1,4-Diamino-2-nitrobenzene

Description

o-Nitro-paraphenylenediamine (ONPD) is a hair dye and a sensitizer in hairdressers.

Chemical properties

Dark red crystal Powder

The Uses of 1,4-Diamino-2-nitrobenzene

This compound is used in hair and fur dyes.

The Uses of 1,4-Diamino-2-nitrobenzene

2-Nitro-4-phenylene-diamine is a dyestuff used to dye furs brown and reddish-brown; dye intermediate in semi-permanent and permanent hair coloring products (produces brown and red shades on the hair); in different hair-dyeing preparations.

Definition

ChEBI: A primary amino compound that is p-phenylenediamine in which one of the hydrogens attached to the benzene ring is replaced by a nitro group. It is a cosmetic hair dye intermediate that is used in permanent hair colouring products (diluted 1:1 ith an oxidising agent prior to application).

General Description

Almost black needles with dark-green luster or black powder.

Air & Water Reactions

1,4-Diamino-2-nitrobenzene may be sensitive to prolonged exposure to light and air. Insoluble in water.

Reactivity Profile

1,4-Diamino-2-nitrobenzene is incompatible with strong oxidizing agents.

Fire Hazard

Flash point data for 1,4-Diamino-2-nitrobenzene are not available; however, 1,4-Diamino-2-nitrobenzene is probably combustible.

Flammability and Explosibility

Non flammable

Contact allergens

ONPD is a hair dye and a sensitizer in hairdressers and consumers who are generally sensitive to PPD too.

Safety Profile

Suspected carcinogen with experimental carcinogenic and neoplastigenic data. Poison by intraperitoneal route. Moderately toxic by ingestion. An experimental teratogen. Other experimental reproductive effects. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx,.