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[Chemical Knowledge]：Properties and Uses of Ammonium Heptamolybdate

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Ammonium heptamolybdate is an important raw material for chemical production, which has a wide range of properties and uses. This article will introduce in detail the properties, preparation methods, uses and safety precautions of ammonium heptamolybdate.

1. the nature of ammonium heptamolybdate

ammonium heptamolybdate is a white or slightly yellowish crystalline powder, with strong oxidation and corrosion. It is easily soluble in water and insoluble in organic solvents such as ethanol and ether. Ammonium heptamolybdate is stable in air, but decomposes at high temperatures to produce molybdenum oxide and ammonia. The preparation method of

2. ammonium heptamolybdate

ammonium heptamolybdate can be prepared by the following method: mixing ammonium molybdate and sulfuric acid, heating reaction to obtain ammonium heptamolybdate crystal, after filtering, washing, drying and other steps to obtain product.

3. the use of ammonium heptamolybdate

1. catalyst
of ammonium heptamolybdate is an excellent catalyst, widely used in petroleum, chemical, environmental protection and other fields. In petroleum processing, ammonium heptamolybdate can be used as a catalyst to promote hydrocarbon cracking and improve the yield of gasoline, diesel and other products. In the field of chemical industry, ammonium heptamolybdate can be used in oxidation reaction, esterification reaction, condensation reaction and so on.

2. Additive
Ammonium heptamolybdate can be added as an additive to plastics, rubber, ceramics and other materials to improve its performance. Adding ammonium heptamolybdate to plastics can improve their thermal stability, oxidation resistance and wear resistance. Adding ammonium heptamolybdate to ceramics can improve its sintering properties and mechanical strength.

3. Chemical reagent
Ammonium heptamolybdate as an important chemical reagent, can be used in analytical chemistry, spectral analysis and other fields. It can be used to determine the content of metal ions, non-metal ions and other substances.
Precautions for the safe use of ammonium heptamolybdate in
4.

Because ammonium heptamolybdate has strong oxidizing and corrosive properties, the following items need to be paid attention to during use:

1. Avoid reducing agents, Organic matter, etc. contact to avoid fire or explosion.

2. Store in a dry, cool and ventilated place, avoid direct sunlight and high temperature.

3. Wear protective gloves, glasses and other personal protective equipment during use to avoid contact with skin and eyes.

In conclusion, ammonium heptamolybdate, as an important raw material for the production of chemicals, has a wide range of properties and uses. Attention should be paid to safety matters during use to ensure production safety.

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