Specifications of Cupric Sulfate Cupric Sulfate USP Grade
CuSO4-5H2O --- 249.69
Sulfuric acid, copper(2+) salt (1:1), pentahydrate.
Copper(2+) sulfate (1:1) pentahydrate CAS 7758-99-8.
Anhydrous 159.61 CAS 7758-98-7.

Cupric Sulfate, dried at 250 to constant weight, contains not less than 98.5 percent and not more than 100.5 percent of CuSO4.

Identification: A solution (1 in 10) responds to the tests for Copper and for Sulfate.
Loss on drying: Dry it at 250 to constant weight: it loses between 33.0% and 36.5% of its weight.
Limit of sodium: The limit is 0.02%.
Limit of potassium: The limit is 0.01%.
Limit of calcium: The limit is 0.005%.
Limit of iron: The limit is 0.003%.
Limit of nickel: The limit is 0.005%.

Specifications of Copper Sulphate Pentahydrate BP Grade Ph Eur
Cupric Sulfate CuSO4-5H2O --- 249.7 --- CAS 7758-99-8

DEFINITION
Content: 99.0 per cent to 101.0 per cent.

CHARACTERS
Appearance: Blue, crystalline powder or transparent, blue crystals.
Solubility: Freely soluble in water, soluble in methanol, practically insoluble in ethanol (96 per cent).

TESTS
Solution S: Dissolve 5 g in water and dilute to 100 ml with the same solvent.
Appearance of solution: Solution S is clear.
Chlorides: Maximum 100 ppm.
Iron: Maximum 1.00 × 100 ppm.
Atomic absorption spectrometry: To meet the requirement.
Lead: Maximum 50.0 ppm.
Loss on drying: 35.0 per cent to 36.5 per cent, determined on 0.500 g by drying in an oven at 250 ± 10C.

Specifications of Copper Sulfate Cupric Sulfate FCC Food grade
CuSO4 Formula weight, anhydrous 159.6
CuSO4-5H2O Formula wt, pentahydrate 249.68
INS: 519 CAS: anydrous CAS 7758-98-7
CAS: pentahydrate CAS 7758-99-8

DESCRIPTION
Copper Sulfate occurs as blue crystals, crystalline granules, or powder. It effloresces slowly in dry air and is freely soluble in water, soluble in glycerin, and slightly soluble in alcohol.
Function: Nutrient.

REQUIREMENTS
Identification: A 1:20 solution gives positive tests for Copper and for Sulfate.
Assay: Not less than 98.0% and not more than 102.0% of CuSO4·5H2O.
Iron: Not more than 0.01%.
Lead: Not more than 4 mg/kg.
Substances Not Precipitated by Hydrogen Sulfide: Not more than 0.3%.

Specifications of Cupric Sulfate Pentahydrate Analytical Reagent Grade
Copper(II) Sulfate Pentahydrate
CuSO4-5H2O Formula Weight 249.68
CAS Number 7758-99-8

REQUIREMENTS
Assay: 98.0–102.0% as CuSO4-5H2O

MAXIMUM ALLOWABLE
Insoluble matter: 0.005%
Chloride (Cl): 0.001%
Nitrogen compounds (as N): 0.002%
Calcium (Ca): 0.005%
Iron (Fe): 0.003%
Nickel (Ni): 0.005%
Potassium (K): 0.01%
Sodium (Na): 0.02%