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[Chemical Knowledge]：Properties and Uses of Sodium Molybdate

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Sodium molybdate is an important raw material for chemical production and has a wide range of uses. This article will detail the nature and use of sodium molybdate.

1. the nature of sodium molybdate

sodium molybdate is a white or yellowish crystalline powder with strong hygroscopicity. It is easily soluble in water and insoluble in ethanol. Sodium molybdate is stable in air, but is easily reduced to molybdic acid in acidic solutions. The melting point of sodium molybdate is high, about 600 ℃.

2. the use of sodium molybdate

1. catalyst

sodium molybdate is an important catalyst, widely used in petrochemical, coal chemical and other fields. In the oxidation of hydrocarbons, sodium molybdate can promote the oxidation of hydrocarbons and improve the selectivity and yield of the reaction. In addition, sodium molybdate can also be used as a catalyst for reactions such as alcohol dehydrogenation and aldehyde oxidation.

2. Preservative

Sodium molybdate has strong antibacterial properties and can be used as a preservative for food and feed. It can effectively inhibit the growth of bacteria and extend the shelf life of food and feed. At the same time, sodium molybdate also has the advantages of low toxicity, tasteless, so it is widely used in the food industry.

3. Pigment and dye

Sodium molybdate can be used as a raw material for pigments and dyes for the preparation of various colorful pigments and dyes. For example, sodium molybdate can be reacted with ferrous sulfate to produce a yellow iron molybdate pigment.

4. Ceramic additive

Sodium molybdate can be used as a ceramic additive to improve the strength and toughness of ceramic materials. It can react with other components in ceramic materials to produce ceramic materials with good properties.

In short, sodium molybdate, as an important raw material for the production of chemical products, is widely used in the fields of catalysts, preservatives, pigments and dyes, and ceramic additives.

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