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pyrosulphuric acid

/ ˌpaɪrəʊsʌlˈfjʊərɪk /

noun

  1. a fuming liquid acid made by adding sulphur trioxide to concentrated sulphuric acid. Formula: H 2 S 2 O 7 Also calleddisulphuric acid See also fuming sulphuric acid


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pyrosulphatepyrotechnic