Introduction of ferrous sulfate heptahydrate

The green vitriol is also known as ferrous sulfate heptahydrate or jarosite, and its refined products are as a pale blue-green sand-like crystals. The product is the use of titanium dioxide plant by-products as raw material of ferrous sulfate through refined processing. Raw materials (FeSO4 · H2O) are wet with a small amount of waste acid and titanium, the metal and cement have a certain resistance. After purification (FeSO4 · H2O) content of 98.5%, TiO2 content of less than 0.07%, PH value is 3-4, the product clean, clean, non-corrosive, storage period of more than one year. New products refined ferrous sulfate heptahydrate (FeSO4 · H2O) quality reaches U.S. AWWA (American Water Works Association) standards and national feed-grade ferrous sulfate heptahydrate standards.

Natural green vitriol mainly containing ferrous sulfate heptahydrate (FeSO4 · 7H2O). Because of different origin, which often contain impurities of different ratio such as copper, calcium, magnesium, aluminum, zinc, and manganese. Calcined into Crimson alum are mainly iron oxide, can still occur hydrous ferric different composition.

Ferrous sulfate 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.

Pre:The toxicity of polyacrylamide    Next:The toxicity of polyacrylamide