2243-62-1

Colorless to pale purple crystals or lavender powder.

1,5-NAPHTHALENEDIAMINE(2243-62-1) neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen may be generated in combination with strong reducing agents, such as hydrides.

This chemical is sensitive to prolonged exposure to air. Insoluble in water.

Questionable carcinogen.

Flash point data for this chemical are not available. 1,5-NAPHTHALENEDIAMINE is probably combustible.

GREY TO DARK BROWN POWDER

1,5-naphthalenediamine be used as intermediates for the synthesis of materials.

Aromatic amines likely to have high carcinogenic potency. QSARs of aromatic amines.

ChEBI: A naphthalenediamine compound having amino substituents in the 1- and 5-positions.

The 1979 estimated production volume was 50,000 kg in Germany and Japan. The major use of the compound is for the manufacture of 1,5-naphthalene diisocyanate and in the production of polyurethane elastomers.
The potential for exposure to 1,5-naphthalenediamine may be greatest for workers involved in the manufacture of 1,5- naphthalene diisocyanate, which is known to hydrolyze readily to 1,5-naphthalenediamine upon contact with water.

Recrystallise the amino-naphthalene from boiling H2O, but this is wasteful due to poor solubility. Boil it in chlorobenzene (charcoal), filter hot and cool the filtrate (preferably under N2). This gives colourless crystals. Dry it in a vacuum till free from chlorobenzene (odour), and store it in sealed ampoules under N2 away from light. [Beilstein 13 IV 340.]