Armstrong's Acid
Title: Armstrong's Acid
CAS Registry Number: 81-04-9
CAS Name: 1,5-Naphthalenedisulfonic acid
Molecular Formula: C10H8O6S2
Molecular Weight: 288.30
Percent Composition: C 41.66%, H 2.80%, O 33.30%, S 22.24%
Literature References: Prepd by sulfonation of naphthalene: Lynch, Scanlan, Ind. Eng. Chem. 19, 1010 (1927).
Properties: Crystals. Soluble in water, alc; practically insol in ether.

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