The industrial value of ferrous sulfate heptahydrate

The ferrous sulfate heptahydrate is a rare metal products production of a byproduct of the process of production using sulfuric acid method, and the product appearance is light green or yellowish green crystalline solid. Join agreed to adjust the amount of alkaline water PH value, and the combination of suspended solids in water, and accelerate the precipitation, mainly used in water purification and industrial wastewater treatment, but also has bactericidal effect.

Ferrous sulfate heptahydrate is blue green monoclinic crystal or granule, odorless, in dry air weathering. Surface oxidation in moist air into the brown basic ferric sulfate. A tetrahydrate at 56.6 ℃ at 65 ℃, a monohydrate. Soluble in water, practically insoluble in ethanol. Its solution cold slow oxidation in air at heat faster oxidation. Adding alkali or exposed light accelerated oxidation. Relative density (d15) 1.897. The median lethal dose (mice by mouth) 1520mG/kG. Irritation. Anhydrous ferrous sulfate is a white powder, containing water of crystallization is light green crystals, crystal commonly known as "copperas," soluble in water as a pale green solution. For chromatographic analysis reagent, spot analysis determination of platinum, selenium, nitrite and nitrate, reducing agents, manufacturing ferrite. Water, polymerization catalyst, photoengraving.

Ferrous sulfate heptahydrate can be used for making iron salts, iron oxide pigment, mordant, purifying agent, preservatives, disinfectants, medicine for anti-anemia drugs. Reagents for the analysis and manufacturing ferrite materials; lots of ferrous sulfate is used as a reducing agent, the main reduction of chromate in cement.

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