Title: 4-Amino-2-sulfobenzoic Acid
CAS Registry Number: 527-76-4
CAS Name: p-Amino-o-sulfobenzoic acid
Molecular Formula: C7H7NO5S
Molecular Weight: 217.20
Percent Composition: C 38.71%, H 3.25%, N 6.45%, O 36.83%, S 14.76%
Literature References: Prepd by treating the potassium salt of 4-nitro-2-sulfobenzoic acid with ammonium sulfide: Hart, Am. Chem. J. 1, 351 (1879/80); Kastle, ibid. 44, 490 (1910).
Properties: Needles from water. Soly in water: 3 g/l at 25°. Almost insol in alcohol, ether.
Use: Proposed as alkalimetric standard.
Status: This monograph has been retired and is no longer subject to revision or update. |