CPC Subgroup
C01B 25/22 Preparation by reacting phosphate-containing material with an acid, e.g. wet process
Full Title
Phosphorus; Compounds thereof ( , C01B21/00, C01B23/00 take precedence; perphosphates C01B15/16) > Oxyacids of phosphorus; Salts thereof (peroxyacids or salts thereof C01B15/00) > Phosphoric acid > Preparation by reacting phosphate-containing material with an acid, e.g. wet process
3 direct subcodes
Child Classifications
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- C01B 25/222 with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen