What is ferrous sulfate

The color of ferrous sulfate is often blue-green, and its shape is granular or monoclinic crystal. Ferrous sulfate does not smell like any odor and has good reducing properties. Once exposed to high heat, it can release a large amount of toxic gas. Therefore, everyone must pay more attention and try to stay away from ferrous sulfate in life. So what is ferrous sulfate?

First, what is ferrous sulfate? Blue-green monoclinic crystals or granules, odorless. It weathers in dry air and oxidizes on the surface into brown alkaline ferric sulfate in humid air. It becomes a tetrahydrate at 56.6°C and a monohydrate at 65°C. Soluble in water, almost insoluble in ethanol. Its aqueous solution oxidizes slowly in the air when it is cold and oxidizes faster when it is hot. Adding alkali or exposing it to light can accelerate its oxidation. Relative density (d15) 1.897. Irritating. Anhydrous ferrous sulfate is a white powder, and the crystals containing water of crystallization are light green. The crystals are commonly known as "green vitriol" and are light green when dissolved in water. Ferrous sulfate can be used as a chromatography reagent and spot analysis to determine platinum, selenium, nitrite and nitrate. Ferrous sulfate can also be used as a reducing agent, to make ferrite, for water purification, as a polymerization catalyst, and in photoengraving, etc.

Second, it is restorative. It decomposes under high heat and releases toxic gases. In the laboratory, it can be obtained by reacting copper sulfate solution with iron. Will weather in dry air. It is easily oxidized in humid air to form brown-yellow alkaline ferric sulfate which is insoluble in water. 10% aqueous solution is acidic to litmus (Ph value is about 3.7). When heated to 70-73°C, it loses 3 molecules of water, and when heated to 80-123°C, it loses 6 molecules of water, and when heated to above 156°C, it turns into alkaline ferric sulfate.

What is ferrous sulfate? Ferrous sulfate can be used to make iron salts, iron oxide pigments, mordants, water purifiers, preservatives, disinfectants, etc.; in water treatment, ferrous sulfate is used for water flocculation purification and removal of phosphates from urban and industrial sewage to prevent eutrophication of water bodies. Reducing Agents Large amounts of ferrous sulfate are used as a reducing agent, primarily to reduce chromates in cement. Medicinal ferrous sulfate is used to treat iron deficiency anemia; it is also used to add iron to food. Long-term excessive use may cause side effects such as abdominal pain and nausea. In medicine, it can also be used as a local astringent and blood tonic, and can be used for chronic blood loss caused by uterine fibroids. Ferrous sulfate is required for the production of colorant a, iron tannate ink and other inks. Ferrous sulfate is also found in mordants for wood dyeing. b. Ferrous sulfate can be used to dye concrete a yellow rust color. c. Carpenters use ferrous sulfate to give maple wood a silvery tint.