PROCESS OF PREPARATION OF THE GREEN COSMETICS PIGMENT ON CHROMIC OXYHYDRATE BASIS

摘要

The process comprises homogenising of a minimum 99% purity K2Cr2O4=H3PO3 mixture (1:4) for calcining at 600-800 deg.C over 30-60 minutes. The product is heated at 80-100 deg.C with magnesium or zinc stearate suspension. Washing with successive settling, in water at 50-60 deg., filtration, and drying at 120 deg.C, is followed by grinding.