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Use of formaldehyde

Release time: 2019-11-12
Formaldehyde is a popular chemical product with wide use, simple production process and sufficient raw material supply. It is the backbone of the downstream product tree of methanol. The annual output of the world is about 25 million tons, and about 30% of methanol is used to produce formaldehyde. However, formaldehyde is a kind of aqueous solution with low concentration, which is not convenient for long-distance transportation from an economic point of view. Therefore, factories are generally set up near the main consumer market, and there is little import and export trade. In addition to direct use in disinfection, sterilization and preservative, formaldehyde is mainly used in organic synthesis, synthetic materials, coatings, rubber, pesticides and other industries. Its derivatives mainly include polyformaldehyde, polyformaldehyde, phenolic resin, urea formaldehyde resin, amino resin, urotor products and polyols. Wood based panel industry is developed, the demand for formaldehyde is very large.

Formaldehyde is widely used in synthetic resins, surfactants, plastics, rubber, leather, paper making, dyestuffs, pharmaceuticals, pesticides, photographic films, explosives, building materials, as well as in the process of disinfection, fumigation and antisepsis. It can be said that formaldehyde is a versatile hand in the chemical industry, but there must be a limit to the use of anything. Once it is used, there must be a standard Exceeding the standards and limits will bring about disadvantages.

According to people familiar with the matter, the price of one ton of formaldehyde is about 1600 yuan, and the main reason for formaldehyde abuse is its low price. In recent years, the formaldehyde output in China has been increasing year by year, which is consistent with the development of China's textile industry and building materials industry, which shows that formaldehyde is still the darling of China's chemical industry for a long time in the future. According to relevant experts, China has developed formaldehyde free iron free finishing agent and formaldehyde free environmental urea formaldehyde resin. However, up to now, they have not been put into production in large quantities. The main reason is the high price. It can be seen that the low price hinders the replacement process of formaldehyde.

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