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Jiangsu Kolod Food Ingredients Co.,Ltd.

focus on food additives and chemicals

Jiangsu Kolod Food Ingredients Co., Ltd.

Jiangsu Kolod

focus on food additives and chemicals

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Ferrous Sulfate Monohydrate

Ferrous Sulfate Monohydrate



1、Chemical Name: Ferrous Sulfate

2、Molecular Formula: FeSO4·7H2O ; FeSO4·nH2O

3、Molecular Weight: Heptahydrate :278.01

4、CAS: Heptahydrate: 7782-63-0 ; Dried: 7720-78-7

5、Character: Heptahydrate: It’s blue-green crystals or granules, odorless with astringency. In dry air, it’s efflorescent. In moist air, it oxidizes readily to form a brown-yellow, basic ferric sulfate. It’s soluble in water, insoluble in ethanol.

Dried: It’s gray-white to beige powder.with astringency.It is mainly composed of FeSO4·H2O and contains a few of FeSO4·4H2O.It’s slowly soluble in cold water (26.6 g / 100 ml, 20 ℃), It will be dissolved quickly when heating.It's insoluble in ethanol.Almost insoluble in 50% sulfuric acid.

6、Usage: It is used as nutritional supplement(iron fortifier) and fruit and vegetable colorant.

7、Packing: It is packed with polyethylene bag as inner layer, and a compound plastic woven bag as outer layer. The net weight of each bag is 25kg.

8、Storage and Transport: It should be stored in a dry and ventilative warehouse, kept away from heat and moisture during transportation, unloaded with care so as to avoid damage. Furthermore, it must be stored separately from poisonous substances.

Specification GB29211-2012 FCC VII
Content,w/% Heptahydrate (FeSO4·7H2O) 99.5-104.5 99.5-104.5
Dried (FeSO4) 86.0-89.0 86.0-89.0
Lead(Pb),mg/kg            ≤ 2 2
Arsenic (As),mg/kg          ≤ 3 ————
Mercury (Hg),mg/kg         ≤ 1 1
Acid Insoluble(Dried), w/%   ≤ 0.05 0.05


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