... in water, micro-display gender, dissolved in acid, ammonia and sodium cyanide, heated to 60-80 °C darken, high temperature ... and then broken down into a black copper oxide and water. Use:1)Reagents for analysis ... for medicine, pesticide.2)as catalyst, mordant, pigment, feed additives,and colorings. Specifications:Testing ItemTesting StandardAssay≥97%Assay(as Cu)≥63 ...