We are Hebei guogang Imp.&Exp. Co., Ltd based in Xingtai , China. We are member of Tradekey.com since May, 2010. Our business is related to Chemicals industry and we specifically deal in Chemicals. Please find our product details below: Copper sulfate Specification: Chemical Formula: CuSO45H2O Appearance: Free flowing white to blue crystalline powder Assay (as CuSO4·5H2O): ≥98.0% Cu: ≥25.0% Free Acid: ≤ 0.3% Insoluble Matter: ≤ 0.2% Lead (as Pb): ≤ 20 ppm Arsenic (as As): ≤20 ppm . Cadmium (as Cd): ≤ 20 ppm Particle Size: ≥ 95% between 20~80 mesh sieve Package: Net weight 25 kgs pp woven bags (polyethylene inner bags) Copper sulfate Specification: Chemical Formula: CuSO45H2O Appearance: Free flowing white to blue crystalline powder Assay (as CuSO4·5H2O): ≥98.0% Cu: ≥25.0% Free Acid: ≤ 0.3% Insoluble Matter: ≤ 0.2% Lead (as Pb): ≤ 20 ppm Arsenic (as As): ≤20 ppm . Cadmium (as Cd): ≤ 20 ppm Particle Size: ≥ 95% between 20~80 mesh sieve Package: Net weight 25 kgs pp woven bags (polyethylene inner bags) Thank you for taking the time to go through our business profile. If there are any question, inquiry or comments, please feel free to contact us.