Industrial chromic anhydride [Appearance]:Amaranth flake matter [MF]:CrO3 [SG]:2.7(Crystal) [Usage]:Used in chrome plating, the material of chrome oxide green , the mordant in the dyeing of wool knitting, the material of accelerant, the accelerant and oxidant in organic synthesis. [quality standard]:GB/T1610--1999 item high class products Assay(CrO3) 99.7%min Water insoluble matter 0.02%max Sulfate 0.06%max Sodium (Na) 0.05%max [Packing]:In new black iron drum and inner plastic bag,50 kg net.