Borax - Sodium Tetraborate Pentahydrate | Colorless Crystals, Easily Soluble, Enhances Glass Properties, Alkaline Solution

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Synonym: Sodium tetraborate,pentahydrate
Molecular Formula: Na2B4O7a c5H2Oa Na2B4O7a c10H2O
Molecular Weight:291.29a 381.36
CAS No.: 12179-04-3a 1303-96-4

Property:
1. Colorless semitransparent crystal or white single slant crystal powder. No smell, taste salty, easily soluble with glycerin, water, slightly soluble in ethanol,not soluble in acid, water solution appears as alkaline.
2. White crystal powder.Effloresce in dry air. Ita s easily soluble in water and glycerin, water solution is alkali. not soluble with alcohol and acidity. when heated to 100a , loss 5H2O, up to 350a -400a , loss hydrate absolutely. Melting pointi 75a .
mainly used for glass and porcelain enamel industry. In glass industry, it can enhance transparency and heat-resistant property. In porcelain enamel products, it can make enamel not easy to fall off and with luster. It also widely used in optics glass, glass fiber, colored metal as jointing agent, cohering agent for jewelry, printing and dyeing, detergent, refined gold, cosmetics, pesticide, fertilizer, borax soap, antiseptic, antifreeze, and in pharmaceuticals as disinfectors etc. Ita s also one of basic raw material for making other boric compound.