Cupric sulfate pentahydrate
     (1).Molecular Formula: CuSO₄.5H₂O         M.W.:249.68
     (2). Basic Characteristics:
     Blue transparent crystals; easily to be efflorescent in dry air; easily dissolvable in water, alcohol and glycerin. When it is dissolved in water, the liquor show the characteristics of  acidity. It has toxicity when swallowing. 
     (3)Picture:
      
     (5)species:

     

Cupric Sulfate pentahydrate, Powder, USP
General Chemical Specifications:
Assay( CuSO4.5H2O )	98.5-100.5%
Loss on Drying	33.0-36.5%
MAXIMUM LIMITS
Cu	25%
Pb	0.001%
As	0.0004%
Cd	0.002%