2978. 3,5-Diaminobenzoic Acid

Nomenclature

CAS number: 535-87-5
C7H8N2O2; mol wt 152.15.
C 55.26%, H 5.30%, N 18.41%, O 21.03%.

Description and references

Prepn from 3,5-dinitrobenzoic acid: Griess, Ann. 154, 327 (1870).

Chemical structure

Derivative

Monohydrate.

Properties

Needles. Loses its water of crystn at about 110°, mp 228°. Slightly sol in water; the aqueous soln dec on standing. Sol in alcohol or ether.

Derivative

Ethyl ester.
C9H12N2O2; mol wt 180.20.
C 59.99%, H 6.71%, N 15.55%, O 17.76%.

Properties

Prisms from ether, mp 84°. Moderately sol in hot water. Sol in alcohol, benzene, other organic solvents.

Use

Detection and determination of nitrites.