6402. 1-Naphthylamine-4,7-disulfonic Acid

Nomenclature

CAS number: 85-75-6
4-Amino-1,6-naphthalenedisulfonic acid; Dahl's acid III.
C10H9NO6S2; mol wt 303.31.
C 39.60%, H 2.99%, N 4.62%, O 31.65%, S 21.14%.

Description and references

Prepn: Erdmann, Ann. 275, 192 (1893).

Chemical structure

Properties

Crystals. Sol in 145 parts cold water, in 20 parts boiling water. Practically insol in alcohol.