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Pharmaceutical excipients
Ferrous sulfate, heptahydrate

Product name

Ferrous sulfate, heptahydrate

Specification

Pharmaceutical grade (USP,BP,EP,CP)

Molecular formula

FeSO4·7H2O

CAS

7782-63-0

H.S. CODE

2833291000

Molecular weight

278.03

Appearance

Light green blue crystals

Package

25KG Woven bags or fiber drums



Property

Glaucous crystallization. The relative density 1.897, melting point ℃ into four 64 when water and salt, salt water into ℃ when 65. In the wet air oxidation as alkali type sulphuric acid easy high iron into yellow. Soluble in water, insoluble in alcohol. Aqueous easy oxidation.

Application

   Analytics reagents. DTC, polymerization catalysts. Also used in photoengraving, medium preparation.

Test standard

Test items

Specification

BP2015

USP35

CP2015

Appearance

Light green blue crystals

Light green blue crystals

Light green blue crystals

Assay

98.0~105.0%

99.5~104.5%

98.5~104.0%

Appearance of solution

Conform

 

 

pH

3.0~4.0

 

3.0~4.0

Copper

 

 

Conform

Arsenic

 

0.0003%

0.0002%

Chloride

0.03%

 

0.03%

Iron

0.5%

 

0.5%

Manganese

0.1%

 

0.1%

Zinc

0.05%

 

0.05%

Lead

 

0.001%

 

Heavy metals

0.005%

 

0.0002%

Mercury

 

 

0.0003%

Storage

    Do not store in direct sunlight. Store in a cool, dry area away from incompatible substances.


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