| sulfanilic acid |
a crystalline acid made from aniline and used as a dye
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| sulfapyridine |
sulfa drug derived from pyridine and sulfanilamide
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| sulfuretted |
sulphuretted: treated or impregnated with sulfur; "sulfuretted hydrogen"
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| sulfur |
sulphur: treat with sulphur in order to preserve; "These dried fruits are sulphured" an abundant tasteless odorless multivalent nonmetallic element; best known in yellow crystals; occurs in many sulphide and sulphate minerals and even in native form (especially in volcanic regions)
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| sulfur dioxide |
a colorless toxic gas (SO2) that occurs in the gases from volcanoes; used in many manufacturing processes and present in industrial emissions; causes acid rain
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