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Ferrous sulfate specification

Items                                               Ferrous Sulphate                                 Ferrous Sulphate
                                                            Monohydrate                                        Heptahydrate
MF                                                       FeSO4.H2O                                         FeSO4.7H2O
Appearance                                        light green crystal                               light green crystal
Assay %min                                               *1%                                                      *8%
Fe                                                              *1%                                                      *9.*0%
Pb                                                              *0 PPM                                                 *1 PPM
As                                                                2 PPM                                                 1 PPM
Cd                                                                5 PPM                                                 3 PPM
Size (Through *0 mesh sieve)             granule ***3mm                                    granule ***4 mm

Standards& Test Methods in Reference: GB/T **4—***1
GB/T **4—***1 Chemical reagent *- henta ferrous sulfate (Iron(â…¡) sulfate heptahydrate)
Chemical formula: FeSO4•7H2O   Molecular weight: **8.*1
Appearance: Ferrous sulfate is light blue and green monoclinic crystal.
Item                                                       Analytical Pure(A.R.)                      Chemical Pure (C.P. )
Content (FeSO4•7H2O), w/%                     *9.0～**1.0                                *8.0～**1.0
Water Insoluble matter, w/%                        ≤0.**5                                           ≤0.*2
Chloride (CI), w/%                                        ≤0.**1                                           ≤0.**5
Total nitrogen content (N), w/%                     ≤0.**1                                               -
Phosphate (PO4),w/%                                    ≤0.**0 5                                     ≤0.**2
Arsenic(As), w/%                                              ≤0.**0 2                                   ≤0.**0 2
Manganese(Mn), w/%                                       ≤0.*5                                              -
Iron(Fe), w/%                                                    ≤0.*2                                         ≤0.*0
Copper(Cu), w/%                                              ≤0.**2                                       ≤0.*1
Zinc (Zn), w/%                                                   ≤0.**5                                       ≤0.*2
Lead(Pb), w/%                                                   ≤0.**2                                      ≤0.**5
Ammonia water insoluble matter (Sulfate gauge), w/% ≤0.*5                             ≤0.2

Features:
Iron(II) sulfate (Br. E. Iron(II) sulphate) or ferrous sulfate is the chemical compound with the formula FeSO4. It is used medically to treat iron deficiency, and also for industrial applications. Known since ancient times as copperas and as green vitriol, the blue-green heptahydrate is the most common form of this material. All iron sulfates dissolve in water to give the same aquo complex [Fe(H2O)6]2+, which has octahedral molecular geometry and is paramagnetic.
Model NO.: Ferrous Sulfate          Type: heptahydrate
Melting Point:*4℃                 Boiling point:**0℃
Appearance: Light Green Particles     Application: Purifying Agent, Fertilizer
Size: Through *0 Mesh Sieve
Ordorless, Solubility: Soluble in Water, Glycerin
Insolubility: Insoluble in Alcohol

Industrially,
ferrous sulfate is mainly used as a precursor to other ironcompounds. It is a reducing agent, for the reduction of chromate in cement.

Nutritional Supplement
Together with other iron compounds, ferrous sulfate is used to fortify foods and treat iron-deficiency anemia. Constipation is a frequent and uncomfortable side effect associatedwith the administration of oral supplements. Stool softeners often are bprescribed to prevent constipation.

Colorant
Ferrous sulfate can also be used to stain concete and some limetones and sandstones a yellowish rust color.

Water Treatment
Ferrous sulfate has been applied for the purification of water by flocculation and for phosphate removal in municipal and industrial sewage treatment plants to prevent eutrophication of surface water bodies.