Copper sulfate

Standard:GOST 19347-99

Production cycle:

neutralization of acid copper-bearing solutions in oxidizers with the use of copper granules;
cleaning and filtering the neutral copper-bearing solutions;
evaporation and crystallization of cleaned solutions;
centrifugation, spinning and drying to obtain the finished copper sulfate.

Application range: Copper sulfate is used to produce other compounds, in medicine, food industry, at making mineral paints, and in agriculture as an antiseptic, fungicide, and fertilizer.

Form and packing: Packaged in plastic or polypropylene bags (50 kg).

The copper sulfate is made according to requirements of GOST 19347 of the brands: ‘A’ and ‘Б’.

Brand ‘A’ (best grade – 99.1%, first grade – 98.0%)

Brand ‘Б’ (best grade – 98.1%, first grade – 96.0%, second grade – 93.1%)

Description
‘A’
Standard for the brand	‘Б’
Top grade
Standard for the brand	First grade
	Top grade
	First grade
	Second grade
Mass fraction of copper sulfate: - in terms of CuSO₄ x 5H₂O, %, no less than
Standard for the brand	99,1
	98,0
	98,1
	96,0
	93,1
- in terms of Cu, %, no less than
Standard for the brand	25,22
	24,94
	24,97
	24,43
	23,67
Mass fraction of iron, %, no more than
Standard for the brand	0,02
	0,04
	0,04
	0,05
	0,10
Mass fraction of free sulfuric acid, %, no more than
Standard for the brand	0,20
	0,25
	0,20
	0,25
	0,25
Mass fraction of water-insoluble residue, %, no more than
Standard for the brand	0,03
	0,05
	0,05
	0,05
	0,10
Mass fraction of arsenic, %, no more than
Standard for the brand	0,002
	0,012
	0,012
	0,012
	0,028

Description	Standard for the brand
	‘A’		‘Б’
	Top grade	First grade	Top grade	First grade	Second grade
Mass fraction of copper sulfate: - in terms of CuSO₄ x 5H₂O, %, no less than	99,1	98,0	98,1	96,0	93,1
- in terms of Cu, %, no less than	25,22	24,94	24,97	24,43	23,67
Mass fraction of iron, %, no more than	0,02	0,04	0,04	0,05	0,10
Mass fraction of free sulfuric acid, %, no more than	0,20	0,25	0,20	0,25	0,25
Mass fraction of water-insoluble residue, %, no more than	0,03	0,05	0,05	0,05	0,10
Mass fraction of arsenic, %, no more than	0,002	0,012	0,012	0,012	0,028