Борная кислота

Chinese alias: borous acid,orthoboric acid,pyroboric acid Synonyms English: Boracic acid,Orthoboric acid ,basilit b,boric acid,borofax,boron trihydroxide Molecular formula: H3BO3 Molecular weight: 61.84 CAS No.: 10043-35-3 EINECS No.: 233-139-2 Melting point: 185 degrees(decomposition) Relative density(water = 1): 1.44 (15degrees) Boiling point: 300degrees Boric acid content: >=99.4%, >=99.6% Physicochemical properties: This for colorless microstrip pearly luster crystallization or white loose powder,Has the slippery soapy feeling; Does not have the stink; May dissolve in the water, the ethyl alcohol, the glycerine, the ether class and in the fragrant volatile oil, Aqueous solution of weak acid.It has three variations,Heat to 70 100degrees when dehydrates gradually the production metaboric acid, when 150 160degrees produces the pyroboric acid, when 300degrees produces the boron acid anhydride (B2O3). Uses: Used in the glass, enameled, medicine and cosmetics etc industries ,As well as the preparation of boron and borate, and used as a food preservative and disinfectants, etc.