an irritant, corrosive, low-melting solid, SO 3 , obtained by the oxidation of sulfur dioxide, used as an intermediate in the manufacture of sulfuric acid.
A colorless, highly reactive, corrosive compound that exists either as a liquid or as a solid. As a solid, it exists in three forms that may coexist in a given sample. Sulfur trioxide is used as an intermediate in manufacturing sulfuric acid, and in making sulfonates from organic compounds. Chemical formula: SO3.
adjective, Chemistry. 1. containing the sulfuryl group, SO 2 , as sulfuryl chloride; sulfonyl. sulfuryl sul·fur·yl (sŭl’fə-rĭl’, -fyə-) n. See sulfonyl.
or sulfonyl chloride noun, Chemistry. 1. a colorless liquid, SO 2 Cl 2 , having a very pungent odor and corrosive to the skin and mucous membranes: used as a chlorinating or sulfonating agent.
noun, Chemistry. 1. the bivalent group, SO 2 , derived from sulfuric acid.
noun, Pharmacology. 1. a yellow crystalline substance, C 2 0 H 1 7 FO 3 S, that is used as an analgesic, antipyretic, and anti-inflammatory in the treatment of certain rheumatic diseases. sulindac su·lin·dac (sə-lĭn’dāk) n. An anti-inflammatory nonsteroid agent with analgesic and antipyretic actions.