... chloride: tech grade Chrome oxide for pigmentProducts:1) Ammonium chloride: tech grade, 99.5% (min.) ... , anhydrous, flake, powder, granular10) Chrome oxide green: 99% (min.)11) Chromic acid: 99.7% (min.)12) Cobalt oxide (Co): 72% (min.)13) Cobalt ... .)24) Guaiacol: 98.5% (min.)25) Hydroquinone: photo grade26) Iron oxide: 110, 120, 130, 190, 313