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Copper sulfate pentahydrate

Chemical Name Copper sulfate
CAS NO 7758-99-8
 EINECS NO 231-847-6
 Mnolecular formula CuSO4·5H2O
 Molecular weight 249.7
 Character Dark blue triclinic crystal or blue crystalline powder or granule.
 Grade Food grade
Melting point 110℃
Boiling point 330 °C at 760 mmHg
Density 2.284
Storage conditions Store in cold storage
Hazard class code R22;R36/38;R50/53
Safety instructions S22;S60;S61
 
Items Standard Testing results
CuSO4.5H2O           ≥ 96 97.4
Cu                    ≥ 24.43 24.786
H2SO4                ≤ 0.2 0.12
As                    ≤ 0.0004 0.0003
Pb                    ≤ 0.001 0.0008
Water insoluble          ≤ 0.2 0.19

Character: Dark blue triclinic crystal or blue crystalline powder or granule. It smells like nasty metal. It slowly weathers in dry air. It’s very soluble in water and the solution is acidic. PH value of 0.1mol/L water solution is 4.17(15℃). It’s very soluble in glycerol. It’s soluble in dilute ethanol but insoluble in pure ethanol.

Usage: It is used as nutritional supplement, antimicrobial agent, firming agent and processing aid.