N-Acetylsulfanilic Acid
Title: N-Acetylsulfanilic Acid
CAS Registry Number: 121-62-0
CAS Name: 4-(Acetylamino)benzenesulfonic acid
Additional Names: N-p-acetylanilinosulfonic acid; acetanilidsulfonic acid; 4-acetamidobenzenesulfonic acid
Molecular Formula: C8H9NO4S
Molecular Weight: 215.23
Percent Composition: C 44.64%, H 4.21%, N 6.51%, O 29.73%, S 14.90%
Literature References: Prepd by the action of oleum or sulfuric acid on acetanilide in acetic anhydride: Junghahn, Neumann, Ber. 33, 1366 (1900); Söll, Stutzer, Ber. 42, 4539 (1909).
Properties: Dihydrate, crystals. Freely sol in water, sol in alcohol, sparingly sol in glacial acetic acid, insol in ether. Slowly hydrolyzes in aq soln.
 
Derivative Type: Sodium salt
Additional Names: Cosaprin
Molecular Formula: C8H8NNaO4S
Molecular Weight: 237.21
Percent Composition: C 40.51%, H 3.40%, N 5.90%, Na 9.69%, O 26.98%, S 13.52%
Properties: Prisms, soluble in water, moderately sol in alcohol, insol in ether.
 
Derivative Type: Ethyl ester
Molecular Formula: C10H13NO4S
Molecular Weight: 243.28
Percent Composition: C 49.37%, H 5.39%, N 5.76%, O 26.31%, S 13.18%
Properties: Needles from benzene, mp 115°.
Melting point: mp 115°

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