Derivative Type: Monohydrate
CAS Registry Number: 6101-32-2
Properties: Orthorhombic plates from water (very slow crystn can yield the dihydrate), becomes anhydr at around 100°. Dec without melting at ~288° (also reported as 360°). pK2 (25°): 3.23. Slowly sol in water: ~1% at 20°, 1.45% at 30°, 1.94% at 40° (w/w anhydr). Almost insol in ethanol, benzene, ether. Slightly sol in hot methanol.
pKa: pK2 (25°): 3.23
Derivative Type: Sodium salt dihydrate
CAS Registry Number: 6106-22-5
Percent Composition: C 31.17%, H 4.36%, N 6.06%, Na 9.94%, O 34.60%, S 13.87%
Properties: Orthorhombic bipyramidal plates. Freely sol in water, sol in hot methanol.
Derivative Type: Zinc salt tetrahydrate
CAS Registry Number: 31884-76-1
Additional Names: Zinc sulfanilate tetrahydrate
Trademarks: Nizin (Broemmel)
Percent Composition: C 29.91%, H 4.18%, N 5.81%, O 33.21%, S 13.31%, Zn 13.58%
Derivative Type: Amide see Sulfanilamide
Use: Manuf various dyes and organic chemicals; as reagent in anal. chemistry (Ehrlich's reagent, detn of nitrites).
Therap-Cat: Antibacterial.
Keywords: Antibacterial (Synthetic); Sulfones.
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