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Sulfanilic acid (4-aminobenzenesulfonic acid) is an organic compound with the formula H 3 NC 6 H 4 SO 3. It is an off-white solid. It is a zwitterion, which explains its high melting point. It is a common building block in organic chemistry. [4]
In chemistry, a sulfenic acid is an organosulfur compound and oxoacid with the general formula R−S−OH. It is the first member of the family of organosulfur oxoacids, which also include sulfinic acids ( R−S(=O)OH ) and sulfonic acids ( R−S(=O) 2 OH ), respectively.
Sulfamic acid is a moderately strong acid, K a = 0.101 (pK a = 0.995). Because the solid is not hygroscopic, it is used as a standard in acidimetry (quantitative assays of acid content). H 3 NSO 3 + NaOH → NaH 2 NSO 3 + H 2 O. Double deprotonation can be effected in liquid ammonia to give the anion HNSO 2− 3. [6] H 3 NSO 3 + 2 NH 3 → HNSO ...
Sulfanilic acid Index of chemical compounds with the same molecular formula This set index page lists chemical structure articles associated with the same molecular formula .
General structure of a sulfonic acid with the functional group indicated in blue. In organic chemistry, sulfonic acid (or sulphonic acid) refers to a member of the class of organosulfur compounds with the general formula R−S(=O) 2 −OH, where R is an organic alkyl or aryl group and the S(=O) 2 (OH) group a sulfonyl hydroxide. [1]
REDIRECT [[Sulfanilic acid] This page was last edited on 11 July 2024, at 12:47 (UTC). Text is available under the Creative Commons Attribution-ShareAlike License 4 ...
Chlorosulfuric acid is also an effective agent: C 6 H 6 + HSO 3 Cl → C 6 H 5 SO 3 H + HCl. In contrast to aromatic nitration and most other electrophilic aromatic substitutions this reaction is reversible. Sulfonation takes place in concentrated acidic conditions and desulfonation is the mode of action in a dilute hot aqueous acid.
Methyl orange is an azobenzene derivative that can be formed from dimethylaniline and sulfanilic acid, first through a diazonium salt formation with the sulfanilic acid, followed by a nucleophilic attack from the dimethylaniline and rearomatization.
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