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] As a substituent, it is known as a sulfo group. A sulfonic acid can be thought of as sulfuric acid with one hydroxyl group replaced by an organic substituent. The parent compound (with the organic substituent replaced by hydrogen) is the parent sulfonic acid, HS(=O)2(OH), a tautomer of sulfurous acid, S(=O)(OH)2.[a] Salts or esters of sulfonic acids are called sulfonates.
^Cite error: The named reference March was invoked but never defined (see the help page).
Cite error: There are <ref group=lower-alpha> tags or {{efn}} templates on this page, but the references will not show without a {{reflist|group=lower-alpha}} template or {{notelist}} template (see the help page).
In organic chemistry, sulfonicacid (or sulphonic acid) refers to a member of the class of organosulfur compounds with the general formula R−S(=O)2−OH...
Benzenesulfonic acid (conjugate base benzenesulfonate) is an organosulfur compound with the formula C6H6O3S. It is the simplest aromatic sulfonicacid. It forms...
Perfluorooctanesulfonic acid (PFOS) (conjugate base perfluorooctanesulfonate) is a chemical compound having an eight-carbon fluorocarbon chain and a sulfonicacid functional...
Camphorsulfonic acid, sometimes abbreviated CSA or 10-CSA is an organosulfur compound. Like typical sulfonicacids, it is a relatively strong acid that is a...
Taurine (/ˈtɔːriːn/), or 2-aminoethanesulfonic acid, is a non-proteinogenic naturally occurred amino sulfonicacid that is widely distributed in animal tissues...
Perfluorobutanesulfonic acid (PFBS) is a PFAS chemical compound having a four-carbon fluorocarbon chain and a sulfonicacid functional group. It is stable...
carbon fluorocarbon chain that is both hydrophobic and lipophobic. Its sulfonicacid functional group imparts polarity, and allows it to interact with other...
gives the "alpha" product naphthalene-1-sulfonicacid as the kinetic product but naphthalene-2-sulfonicacid as the thermodynamic product. The 1-isomer...
Triflic acid, the short name for trifluoromethanesulfonic acid, TFMS, TFSA, HOTf or TfOH, is a sulfonicacid with the chemical formula CF3SO3H. It is one...
Methanesulfonic acid (MsOH) or methanesulphonic acid (in British English) is an organosulfuric, colorless liquid with the molecular formula CH3SO3H and...
derivatives) are then sulfonated with sulfur trioxide to give the sulfonicacid. The sulfonicacid is subsequently neutralized with sodium hydroxide. The term...
1950s AN-M8 model. The smoke generator on the Medium Mark B tank used sulfonicacid. The first documented use of a smoke screen was circa 2000 B.C. in the...
organosulfur chemistry, a sulfonate is a salt, anion or ester of a sulfonicacid. Its formula is R−S(=O)2−O−, containing the functional group −S(=O)2−O−...
carboxyl group –COOH. Sulfonicacids, containing the group –SO2OH, are relatively stronger acids. Alcohols, with –OH, can act as acids but they are usually...
formula HSO3Cl. It is also known as chlorosulfonic acid, being the sulfonicacid of chlorine. It is a distillable, colorless liquid which is hygroscopic...
water increases the amount of water molecules associated with each sulfonicacid group. The hydrophilic nature of the ionic groups attract water molecules...
organic acid, such as sulfonicacid or a phosphonic acid. One of the acyl groups of an acid anhydride can be derived from an inorganic acid such as phosphoric...
Aminonaphthalenesulfonic acids are compounds with the composition C10H6(NH2)(SO3H), being derived from naphthalene (C10H8) substituted by an amino and sulfonicacid groups...
Ethanesulfonic acid (esylic acid) is a sulfonicacid with the chemical formula CH3CH2SO3H. The conjugate base is known as ethanesulfonate or, when used...
Ensulizole (INN; also known as phenylbenzimidazole sulfonicacid) is a common sunscreen agent. In 1999, the United States Food and Drug Administration...
hydrogen) is CH3SO2NH2. Any sulfonamide can be considered as derived from a sulfonicacid by replacing a hydroxyl group (−OH) with an amine group. In medicine...
Sulfanilic acid (4-aminobenzenesulfonic acid) is an organic compound with the formula H3NC6H4SO3. It is an off-white solid. It is a zwitterion, which...
Global Information