Cupric Sulphate, anhydrous, occurs as mineral hydrocyanite. It exhibits a rhombic crystalline morphology. It decomposes to its oxide at temperatures above 600°C.
C 2704 (OTTO) Cupric Sulphate, anhydrous, GR 99%+ Cas 7758-98-7 - used in the electroplating and mining industries and to preserve wood in combination chromium and arsenic.