... price 3. high quality Copper Sulphate Pentahydrate CAS NO.: 7758987 EINECS NO.: 231-847-6 Copper Sulphate PentahydrateSpecification:item For FeedFor TechFor AgricultureFor FeedCuSO4.5H2O≥98969498.5Cu≥25 ... .20.15Application: CuSO4·5H2O can be extensively used in fodder, fertilizer, pigment, chemical, pesticide, electroplating, mining ore, animal medicine field and so on. Copper Sulphate pentahydrate