Sodium selenite is white crystalls or crystal powder, soluble in water, insoluble in ethanol. Melting point is 350 ℃. To be toxic, oral one gram of death, LD50 (rats through the mouth) for 7 mg/kg. Separation elemental selenium in reducing agent. The solution obtained in calcium chloride at room temperature in vacuum dryer to remove moisture, and join the seed crystal precipitation, after the suction filter, drying in the dryer, a quick sodium selenite hydrate. Will the reaction liquid in 60 ~ 100 ℃ evaporation, crystallization, dehydration, drying, can get anhydrous sodium selenite. Of amino acid metabolism, protein synthesis, carbohydrate metabolism, biological oxidation have influence. Livestock and poultry body selenium deficiency, will seriously affect the function of the growth and reproduction of livestock and poultry.
1. Selenium is glutathione glycosides peptide part of peroxidase, maintain the function of the cell membrane by oxidation, improve lipid properties of protein production of endogenous antioxidants. Participate in energy conversion, affect the metabolism of fat emulsion, absorption and the absorption of a variety of vitamins play an extremely important role. At the same time also to participate in and the synthesis of coenzyme A, coenzyme Q, affect the function of other enzyme systems. Of amino acid metabolism, protein synthesis, carbohydrate metabolism, biological oxidation have influence. Livestock and poultry body selenium deficiency, will seriously affect the function of the growth and reproduction of livestock and poultry. Alkaloids. Seed germination test. Remove the green to make glass. Colored glaze preparation.
2. Sodium selenite selenium supplement enhancer used in feed.
3. Used as a nutritional enhancer, feed additives.
4. Used as a biochemical reagents, test alkaloid, seed germination test. For the red glass and colored glaze preparation.
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