1-Naphthylamine-2,7-disulfonic Acid
Title: 1-Naphthylamine-2,7-disulfonic Acid
CAS Registry Number: 486-54-4
CAS Name: 1-Amino-2,7-naphthalenedisulfonic acid
Additional Names: Kalle's acid
Molecular Formula: C10H9NO6S2
Molecular Weight: 303.31
Percent Composition: C 39.60%, H 2.99%, N 4.62%, O 31.65%, S 21.14%
Literature References: Prepn from 1-naphthylamine-2,4,7-trisulfonic acid: DE 62634 (1892 to Kalle); Frdl. 3, 431; from 1-naphthylamine-2,5,7-trisulfonic acid: DE 255724 (1912 to Bayer); Frdl. 11, 217.
Properties: Needles.
 
Derivative Type: Sodium salt
Properties: Prisms from dil alc. Solns display a blue-green fluorescence.
 
Derivative Type: Barium salt
Properties: Needles. Very slightly sol in hot water.

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