Boric Acid Pharmaceutical Intermediates CAS 11113-50-1 High Purity 99%

Boric acid /Pharmaceutical Intermediates Boric Acid CAS 11113-50-1 High Purity 99%

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Chemical Properties:
Boric acid is a weak acid (pKa = 9.15), existing in aqueous solutions at or below pH 7 as undissociated boric acid. In the solid there is considerable hydrogen bonding between H3BO3 molecules resulting in a layer structure, which accounts for the easy cleavage of the crystals. H3BO3 molecules also exist in dilute solutions but in more concentrated solutions polymeric acids and ions are formed (e.g. H4B2O7; pyroboric acid or tetrahydroxomonoxodiboric(III) acid).If solid boric acid is heated it loses water and transforms to another acid at 300℃. This is given the formula HBO2 but is in fact a polymer (HBO2)n. It is called metaboric acid or, technically, polydioxoboric(III) acid.

Physical properties:
Boric acid exists in the form of colorless crystals or as a white powder and is soluble in water. It occurs naturally in the condensate from volcanic steam vents (suffioni). Commercially, it is made by treating borate minerals (e.g. kernite, Na2B4O7.4H2O) with sulphuric acid followed by recrystallization.

Uses:
Boric acid is used in the manufacture of glass (borosilicate glass), glazes and enamels, leather, paper, adhesives, and explosives. It is widely used (particularly in the USA) in detergents, and because of the ability of fused boric acid to dissolve other metal oxides it is used as a flux in brazing and welding. Because of its mild antiseptic properties it is used in the pharmaceutical industry and as a food preservative.
boric acid is an effective preservative against yeast. It is used in concentrations of 0.01 to 1.0 percent and has fair to good antiseptic properties. It may also be used as a buffer and denaturant. Boric acid is prepared from sulfuric acid and natural borax. It can cause skin rashes and irritation if used in high concentrations. The use of boric acid in cosmetic preparations is no longer very popular.

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Lihe Pharmaceutical Technology (Wuhan) Co., Ltd. is a pharmaceutical company integrating product development, production and chemical intermediates, specializing in the research, development, production and export of organic intermediates, pharmaceutical intermediates, chemical solvents and pesticides.Loacted in Hubei Province, involving pesticide, medicine, chemical industry, coating, dye, reagent, polyester, petrochemical and other fields. AOP provide excellent products and products for customers according to quality, quantity and time Service, established a good brand reputation and business reputation in the industry, won the trust and support of many customers at home and abroad.since its establishment, the company has always adhered to the principle of people-oriented, technology for survival, quality for credit, service tenet, consistent quality and reputation guarantee, continuous pioneering spirit of business is the cornerstone of our development, and the support and praise of..