Product Character Trivial name: chromium powder, alternate name: basic chromium sulfate . Chemical formula: Cr(OH)nSO0.5(3-n), molecular weight: 165.07, basicity: 33% . Complex mainly with hydrated basic chromium sulphate and sodium sulfate, Green powder, highly soluble in water. Application Used in leather and fur's tanning and retanning. Notice 1. The product is non-hazard goods, but should be stored in a well-ventilated dry cool storehouse. 2. Avoid contacting with eyes and inhaling the dust. 3. Please wear protective gloves, safety glasses and dust mask to avoid dust fog. 4. In case of leakage, neutralize with calcium oxide immediately. [quality standard]: QB/T2413-1998 ItemsType & Standard Chrome Oxide Cr2O3251231221191 Basicity332332332402332 Water Insolubles0.10%max0.10%max0.10%max0.10%max---------- Iron(Fe3+)0.10%max0.10%max0.10%max0.10%max0.10%max Cr6+3ppm3ppm3ppm3ppm3ppm Packing:25kg bag.