401. Amido-G-Acid

Nomenclature

CAS number: 86-65-7
7-Amino-1,3-naphthalenedisulfonic acid; 2-naphthylamine-6,8-disulfonic acid; amino-G-acid.
C10H9NO6S2; mol wt 303.31.
C 39.60%, H 2.99%, N 4.62%, O 31.65%, S 21.14%.

Description and references

Prepd by sulfonation of β-naphthylamine: Fierz-David, Braunschweig, Helv. Chim. Acta 6, 1146 (1923).

Chemical structure

Derivative

Tetrahydrate.

Properties

Fine monoclinic needles. Sol in water, less sol in alc. Soly in water at 20°: 9.24 g in 100 g of satd soln.

Use

Manufacture of dyes.