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PCE
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CPC Subgroup
C01B 25/20

Preparation from elemental phosphorus or phosphoric anhydride

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 from elemental phosphorus or phosphoric anhydride