sodium formate, contains two crystal waters in the crystal, so it is also known as sodium formate dihydrate, sodium formate dihydrate, and sodium formate dihydrate (Sodium formatehydrate). Sodium formate is one of the simplest organic carboxylates. It is white crystal or powder. Slightly deliquescent and hygroscopic. It is easily soluble in about 1.3 parts of water and glycerin, slightly soluble in ethanol and octanol, and insoluble in ether. Its aqueous solution is alkaline. Sodium formate is decomposed into hydrogen and sodium oxalate when heated, and then sodium carbonate is produced. Sodium formate is mainly used in the production of sodium formate, oxalic acid. In the leather industry, it is used as a camouflage acid in the chromium tanning method, used as a catalyst and stabilizer synthetic agent, as a reducing agent in the printing and dyeing industry. Sodium formate is harmless to the human body and has a stimulating effect on the eyes, respiratory system and skin. The molecular formula is CHO2Na and the chemical structural formula is HCOONa, HCOONa·2H2O.
Application in the leather industry, the main uses are as follows:
(1) Mainly used in the production oxalic acid and sodium hydroxide, etc., and also in the production of dimethylformamide. It is also used in medicine, printing and dyeing industry. ;
(2) Used as reagents, disinfectants and mordants for the determination of phosphorus and arsenic;
(3) Used as a preservative. Use 4: Used in alkyd resin coatings, plasticizers, and strong;
(4) Used as explosives, acid-resistant materials, aviation lubricants, and adhesive additives.

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