甲醛的多种生活使用范围及甲醛的严重危害影响 如何测甲醛浓度（How many kinds of living range of formaldehyde and the serious harm that formaldehyde affects are how to measure formaldehyde concentration）.docVIP

甲醛的多种生活使用范围及甲醛的严重危害影响 如何测甲醛浓度（How many kinds of living range of formaldehyde and the serious harm that formaldehyde affects are how to measure formaldehyde concentration） The living range of formaldehyde and the serious harm of formaldehyde The living range of formaldehyde and the serious harm of formaldehyde Formaldehyde is an important organic raw materials, mainly used for synthetic adhesives, such as phenolic resin, urea formaldehyde resin, synthetic fiber (such as synthetic fiber - Vigny, leather industry, PVFM) medicine, dyes etc.. Faure Marin has antiseptic and antiseptic ability, can be immersed in biological specimens, and its dilute solution (0.1 - 0.5%) can be used to soak seeds in agriculture and disinfect seeds. Formaldehyde is usually made from methanol by catalytic oxidation in industry. Formaldehyde can be produced with ammonia solution of silver mirror reaction, the inner wall of the test tube attached to a thin layer of metal as bright as silver mirror (silver combined state is reduced, the oxidation of formaldehyde); copper hydroxide suspension reaction and the new generation of red precipitate of cuprous oxide. Formaldehyde is the simplest aldehyde, usually classified as a saturated one element aldehyde, but it is symmetrical, equivalent to two yuan aldehyde. In the reaction with the weak oxidant, Ag per mole of HCHO can be reduced to 4mol or 2mol cuprous oxide at most, which is two times the reduction capacity of acetaldehyde, so formaldehyde is like two yuan aldehyde. Stimulation: the main harm of formaldehyde for the stimulation of the skin and mucous membrane, formaldehyde is a protoplasmic poison, can bind with protein, when high concentrations of inhaled respiratory severe irritation and edema, eye irritation, headache. Sensitization: skin direct contact with formaldehyde can cause allergic dermatitis, stain and necrosis, inhalation of high concentrations of formaldehyde can induce bronchial asthma. Mutagenicity: high concentrations of form