2019年12月11日星期三

What You Don't Know About The Applications of Sodium Tungstate

Sodium tungstate is a kind of tungstate, and its chemical formula is Na2WO4.

The appearance is colorless crystalline or white crystalline powder, soluble in water, insoluble in ethanol, slightly soluble in liquid ammonia, when confront a strong acid it is broken down into tungstic acid dissolved in water.

Sodium tungstate, as a raw material for chemical synthesis of tungsten, is an important intermediate in the transformation of tungsten into metals, usually, the intermediate product is broken down by alkaline process, and sodium tungstate is obtained, but in here sodium tungstate refers to crude sodium tungstate containing impurities. It also needs to be obtained by ion exchange, precipitation, extraction and other processes. Finally, APT is obtained by evaporation crystallization. Although sodium tungstate is an intermediate product of tungsten in the process of transformation, we use a lot of sodium tungstate, usually used in industrial products in tungstate refers to chemically pure sodium tungstate, sodium hydroxide is prepared by tungsten trioxide.

sodium tungstate image

Sodium tungstate is not only a chemical product, but also a high-quality semiconductor material. It can be used to control environmental pollution and manufacture new energy materials. The known applications are as follows:

1. Applied in the manufacture of metal tungsten, tungstic acid, tungstate, etc..

2. Applied in mordant, analytical reagent, catalyst, water treatment chemicals, manufacturing fireproof, waterproof materials, as well as dodecatungstophosphate, borotungstate etc..

3. The compound of sodium tungstate and polyaspartic acid can be used as a metal corrosion inhibitor to prolong the service life of metals in corrosive environments such as sea water.

4. Textile agents used as a weighting agent for fabrics. This product is used as a fabric aid and consists of a mixture of sodium tungstate, ammonium sulfate, ammonium phosphate, etc., used for fireproofing and waterproofing of fibers. This kind of fiber can be made of fireproof rayon and rayon, can also be used for leather tanning.

5. The combination of sodium tungstate and hydrogen peroxide can effectively degrade dye wastewater methylene blue.

6. Sodium tungstate can optimize plant nitrogen absorption, improve fruit quality and avoid nitrogen loss.

7. Sodium tungstate can be used to adjust the absorption of NO3- N by Cassia albus, which increases the production of diesel fuel.

8. Sodium tungstate can be made into antifreeze by compounding, so as to prevent the tea plant from "cold disaster".

In addition, some scholars believe that sodium tungstate can promote islet cell proliferation, differentiation and secretion, reduce serum total cholesterol (CHO) and triglyceride (TG) level, and can be used as raw materials for the treatment of diabetes, can also be used for reducing blood lipid and weight loss.

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