Ferrous Sulphate Heptahydrate AR/ACS 500Gram CDH

PRODUCT CODE 529075
SYNONYMS [Iron (II) sulphate]
C.I. NO. -- CASR NO. (7782-63-0)
FeSO4.7H2OATOMIC OR MOLECULAR FORMULA FeSO4.7H2O
ATOMIC OR MOLECULAR WEIGHT 278.01
PROPERTIES Insoluble in alcohol, mp 64°C, Hygroscopic.

PARAMETER LIMIT
Description Bluish green crystals or light green crystalline powder.
Solubility 10% solution in a mixture of freshly boiled, cooled water and dilute sulphuric acid is clear and
bright.
Identification Passes test.
Minimum Assay (Redox Titration) 99.5%
pH of (5% soln in water) 3 - 4

MAXIMUM LIMIT OF IMPURITIES
Chloride (Cl) 0.0005%
Nitrogen compound (N) 0.001%
Arsenic (As) 0.0002%
Copper (Cu) 0.001%
Ferric ion (Fe3+) 0.02%
Lead (Pb) 0.0005%
Manganese (Mn) 0.05%
Mercury (Hg) 0.0002%
Zinc (Zn) 0.005%
Organic volatile impurities Excluded by Production process.
Nickel (Ni) 0.005%
Phosphate (PO4) 0.001%
Calcium (Ca) 0.005%
Chromium (Cr) 0.005%
Potassium (K) 0.002%
Magnesium (Mg) 0.008%
Sodium (Na) 0.02%
Substances not precipitated by ammonia 0.1%