788. Armstrong's Acid

Nomenclature

CAS number: 81-04-9
1,5-Naphthalenedisulfonic acid.
C10H8O6S2; mol wt 288.30.
C 41.66%, H 2.80%, O 33.30%, S 22.24%.

Description and references

Prepd by sulfonation of naphthalene: Lynch, Scanlan, Ind. Eng. Chem. 19, 1010 (1927).

Chemical structure

Properties

Crystals. Soluble in water, alc; practically insol in ether.