... molecules of crystal water, 110 degrees, crystal water loss of 4 elements, 150 degrees all the crystal water loss made anhydrous ... copper oxide, sulfur dioxide and oxygen. Purity: CuSO4.5H2O95% Min Cu: 25.0% Min Pb 8ppm Max As 15ppm Max SUBJECT(%)INDEXCu25.0Ni0 ... salt leaching,copper chloride,cuprous chloride and cuprous oxide,etc.(4) Dyestuff industry: used in the prodection of copper sheet azo ...