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Ferrous Sulphate Heptahydrate (China Origin)

Ferrous Sulphate Heptahydrate (China Origin)
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Country Origin : China Appearence : Blue or Green Crystals
CAS No. : 7782-63-0 H.S. Code : 2833.29.00
Formula : FeSO4. 7H2O Common Names : Green Vitriol
IUPAC Name : Ferrous Sulphate Heptahydrate
Packaging : 1000 @ 25 kg HDPE line bags, 25 MT / 20'FCL
  • Description
  • Application

Brief Overview

 

Ferrous sulphate heptahydrate also known as Iron (II) Sulphate is a blue green crystal with the formula FeSO4.7H2O. Originally it was known as “green vitriol” or “copperas”. It is soluble in water and melts at 64˚C. It is produced as a by-product of the pickling of steel. It is used as a mordant in dyeing wool, in the manufacture of ink, in water purification as a substitute for aluminum sulphate, as a fertilizer, and as a feed additive. It is also used to produce magnetic ferric oxide.

 

Manufacturing Process

 

Ferrous sulfate monohydrate is converted in a crystallization reactor in the presence of water into ferrous sulfate heptahydrate as crystallized product, and water is subsequently isolated from the ferrous sulfate heptahydrate. Ferrous sulfate monohydrate is obtained from a pickling solution containing ferrous chloride, hydrochloric acid and water and reacted in a precipitating reactor in the presence of excess sulphuric.



Pharmaceutical Industry

Ferrous sulfate is used to fortify foods and to treat iron-deficiency anaemia. Constipation is a frequent and uncomfortable side effect associated with the administration of oral iron supplements. Stool softeners often are prescribed to prevent constipation.

 

Dye and Textile Industry

Ferrous sulfate was used in the manufacture of inks, especially iron gall ink. It is also used in wool dyeing a mordant. There are two different methods for the direct application of indigo dye. One of these is known as china blue and involved iron(II) sulfate. After printing an insoluble form of indigo onto the fabric, the indigo was reduced to leuco-indigo in a sequence of baths of ferrous sulphate. The china blue process could make sharp designs, but it could not produce the dark hues of other method. Sometimes, it is included in canned black olives as an artificial colorant.