CPC Subgroup
C01B 25/047 of yellow phosphorus
Full Title
Phosphorus; Compounds thereof ( , C01B21/00, C01B23/00 take precedence; perphosphates C01B15/16) > Purification of phosphorus > of yellow phosphorus
C01B 25/047 Phosphorus; Compounds thereof ( , C01B21/00, C01B23/00 take precedence; perphosphates C01B15/16) > Purification of phosphorus > of yellow phosphorus