2351. 1,7-Cleve's Acid

Nomenclature

CAS number: 119-28-8
8-Amino-2-naphthalenesulfonic acid; 1-naphthylamine-7-sulfonic acid.
C10H9NO3S; mol wt 223.25.
C 53.80%, H 4.06%, N 6.27%, O 21.50%, S 14.36%.

Description and references

Prepn: Erdmann, Ann. 275, 262 (1893); Roos et al., US 2875243 (1959 to Bayer). Industrial synthesis: Nakahara et al., J. Synth. Org. Chem. Jpn. 29, 1129 (1971).

Chemical structure

Properties

Needles or prisms from water contg 1H2O. Sol in 220 parts water; very slightly sol in alcohol, ether.

Use

In manuf of azo dyes.