We learned from the Formaldehyde Supplier that formaldehyde (HCHO) is a
colorless, strong pungent odor gas, easily soluble in water, alcohol ethers, and
has been identified by the World Health Organization as a carcinogenic and
teratogenic substance. It is recognized The source of allergies is also one of
the potential strong mutagens. Studies have shown that the release period of
formaldehyde contained in decoration and furniture is as long as 3-15 years. The
effects of formaldehyde on human health are mainly manifested in abnormal sense
of smell, irritation, allergies, abnormal lung function, abnormal liver function
and abnormal immune function.
Formaldehyde (Formalin) is a colorless gas with a strong pungent odor. Easily soluble in water, alcohol and ether. Formaldehyde is gaseous at room temperature and usually appears as an aqueous solution. Its 37% aqueous solution is called formalin, which is used by medical and scientific research departments for the preservation of specimens. The boiling point of this solution is 19.5℃, so it is very volatile at room temperature, and the volatilization speed increases with the rise of temperature. Formaldehyde ranks second in the priority control list of toxic chemicals in my country. Formaldehyde has been identified as a carcinogen and teratogenic substance by the World Health Organization.
Because of its strong chemical reaction and low price, formaldehyde was widely used in industrial production 100 years ago. Formaldehyde is widely used in industrial production. It is a raw material for the manufacture of synthetic resins, paints, plastics and man-made fibers. It is also an important part of the adhesives (urea-formaldehyde resin glue, melamine resin glue and phenolic resin glue) used in the manufacture of wood-based panels. raw material. At present, the production of wood-based panels (including plywood, large core board, medium density fiberboard and particleboard, etc.) mainly uses urea-formaldehyde resin glue (UF) as an adhesive. Urea-formaldehyde resin glue uses formaldehyde and urea as raw materials and is carried out under certain conditions. Adhesive made by addition reaction and polycondensation reaction.
With the development of the economy and the improvement of people's living standards, building decoration materials made of various raw materials have entered the family, causing indoor air pollution and it is recognized that the representative chemical substance-formaldehyde. Formaldehyde is an air pollutant with a wide range of sources. Formaldehyde in outdoor air mainly comes from the combustion of fuels such as petroleum, coal, natural gas, oxidative decomposition of lubricating oil, automobile emissions, and atmospheric photochemical reactions. In addition, some factories producing formaldehyde, urea-formaldehyde resins, chemical fibers, dyes, rubber products, plastics, inks, paints, and coatings will also release large amounts of formaldehyde. The formaldehyde in indoor air mainly comes from building decoration materials, furniture, various adhesives, coatings, synthetic textiles and so on.
Although formaldehyde has helped us a lot in our lives, it is endangering our health all the time. Therefore, the treatment of formaldehyde must not be relaxed for our health.