Sulfonic acid, sulfo and alkyl (including aryl) connected to a class of organic compounds. General formula R-SO3H, R on behalf of the hydrocarbon, strong acidity, relatively large water-soluble, used in the manufacture of dyes, drugs, detergents, there are a variety of manufacturing methods.
R-SO3H of the general formula wherein R is a hydrocarbon group. Sulfonic acid mostly synthetic products, only β-amino ethanesulfonic acid NH2CH2CH2SO3H and a few other sulfonic acids exist in nature. Sulfonic acid group is a strong water-soluble strong acid groups, sulfonic acid are water-soluble strong acid compounds. Aromatic sulfonic acid molecules in the sulfonic acid group can be hydroxy, cyano-substituted, is the preparation of phenol, nitrile intermediates. Sulfonic acids can be prepared by the sulfonation of aromatic hydrocarbons, or the oxidation of thiols. Methanesulfonic acid can be used as a catalyst for esterification, hydrolysis and alkylation. The long chain sulfonic acid sodium salt such as n-C11H23-CH2 is a class of hard water resistant detergents. Sulfonic acid groups in many dye molecules can render colored compounds water-soluble. Sodium dodecyl benzene sulfonate can be used as detergent. Chlorosulfone can be obtained from sulfonic acid, a great use in organic synthesis.桹 H moiety in the sulfonic acid molecule may be substituted with a halogen atom, an amino group, or the like. For example, sulfuryl chloride is a commonly used intermediate in organic synthesis and analytical chemistry. Aminosulfonamides are a class of anti-inflammatory drugs. Sodium saccharin is also a sulfonamide