Aluminum hydroxide is a kind of compound, can be dissolved in acid and alkali solution, but insoluble in water and alcohol. According to the amount of water content, aluminum hydroxide can be divided into: alumina trihydrate, alumina monohydrate, low crystallinity alumina and amorphous aluminum hydroxide, etc. Today we will take a look at the main application areas of crystalline aluminum hydroxide.

Crystalline aluminum hydroxide is mainly divided into low alkali type, low iron type, fine particle type, high white type of these types. Not only has the advantages of high hardness, heat resistance and wear resistance, good chemical stability, non-toxic, tasteless, non-volatile, etc., but also has good smoke and flame retardant properties, so it is favored by many fields and is often used in the following industries:

1) In the plastic material industry, aluminum hydroxide is used as a purified inorganic filler with low impurity content and can be used as a filler polymer. In addition, aluminum hydroxide can also be used as an effective flame retardant in various fields for many years.

2) When aluminum hydroxide is used in the paper industry, its main function is surface coating, filler and production of non-combustible paper. Aluminum hydroxide can improve the gloss, reflectivity, light resistance, smoothness and printability of paper, and can also be used as a substitute for coated paper raw materials. Made of asbestos paper, or paper treated with a suitable flame retardant (such as aluminum hydroxide).

3) Because aluminum hydroxide is toxic, tasteless and insoluble in water, it can be used as a friction agent for the production of toothpaste. It is compatible with fluoride and has excellent performance. It is one of the ideal abrasives for pharmaceutical toothpaste.

4) Aluminum hydroxide can be used as a raw material for synthetic mullite. Mullite is a general term for minerals composed of aluminum silicate. It is a high-quality refractory material, mainly used in refractory materials, ceramics, metallurgy, casting, electronics and other industries. It has the characteristics of high temperature resistance, high strength and low thermal conductivity.

In addition, aluminum hydroxide can also be used as artificial marble, agate, artificial carpet filler; production of aluminum sulfate, alum, alumina, hydrated alumina, aluminum acid sodium chemical raw materials; rubber flame retardant; used as adhesives and sealants of fillers and supplements; synthetic molecular sieve; used for anti gastric acid drugs.