art_3__point_5__text_1
‘sulphur dioxide’ or ‘SO_(2)’ means all sulphur compounds expressed as sulphur dioxide, including sulphur trioxide (SO_(3)), sulphuric acid (H_(2)SO_(4)), and reduced sulphur compounds such as hydrogen sulphide (H_(2)S), mercaptans and dimethyl sulphides;
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Source: EUR-Lex (Cellar) · retrieved 2026-10-29 · Text as adopted (Official Journal); later amendments are not incorporated in this text.