Colorless transparent oily liquid, with a special odor similar to benzaldehyde. The color quickly turns reddish brown when exposed to light and air. Easily volatilize with steam. Slightly soluble in water, soluble in ethanol, ether, acetone, chloroform, benzene. Mainly used as an industrial solvent, for the preparation of furfuryl alcohol, furoic acid, tetrahydrofuran, γ-valerolactone, pyrrole, tetrahydropyrrole and other purposes used as analytical reagents used as raw materials for organic synthesis, also used for synthetic resin, varnish, pesticide, medicine, rubber and paint and other purposes for tanning leather. It should be stored in a cool and ventilated warehouse, kept away from light, to prevent sunlight exposure, and away from fire. Furfural is the raw material for the preparation of many drugs and industrial products. Furan can also be made into butanedial by electrolytic reduction, which is the raw material for the production of atropine. Some furfural derivatives have strong bactericidal ability and broad bactericidal spectrum. For example, furfural is synthesized by 5-nitrofurfural and then condensed with aminourea hydrochloric acid to obtain furacillin, which is a kind of antiseptic. Furfural is the raw material of intermediates such as furanoacrylic acid, furfuryl amine Chemicalbook fumaric acid, adipic acid, furfuryl alcohol, which is widely used in the synthesis of fine chemicals such as medicine, pesticides, veterinary drugs, dyes, spices, rubber additives, preservatives and so on. Furfural is consumed most as a solvent and as a raw material for synthetic resins. In the aspect of synthetic resin, furan resin, furfural resin and furfural ketone resin can be produced. Furfuran resin is also called furfuryl alcohol resin. Furfural is hydrogenated under high pressure to produce furfuryl alcohol. Furfural alcohol is polymerized to obtain furfuryl alcohol resin. This resin has strong alkaline resistance, high heat resistance and water resistance, and can be used as a caulking resin cement, anti-corrosion lining, and binder. As a solvent, furfural can selectively extract unsaturated components from petroleum and vegetable oil. Extraction of aromatic components in lubricating oil and diesel oil with furfural. Improve the quality of these products. In the production of synthetic rubber, butadiene and isoprene are purified by furfural extraction. Furfural can irritate the skin and mucous membranes, and the maximum allowable concentration in the air is 5ppm. The oral LD50 of rats was 127mg/kg.
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