Sodium Tetraborate Pentahydrate

Applications: Used mainly used for glass and porcelain enamel industry. 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 optic 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. Its also one of basic raw material for making other boric compound

Characters: A white, crystalline powder, colourless crystals or crystalline masses, efflorescent, soluble in water, very soluble in boiling water, freely soluble in glycerol.

Item	Na2B4O7. 10H20	Item	Na2B4O7. 5H20
Content of Fe % ≤	0.002	Fe ppm	10
Content of Na2B4O7. 10H2O % ≥	99.5	Content of Na2B4O7. 5H2O	101.7-103.1
Content of CO3 % ≤	0.1	Content of Na20	21.6-21.9
Content of Non-dissolved substance % ≤	0.04	Non-dissolved substance ppm	400
Content of SO4 2- % ≤	0.1	SO4 2- ppm	100
Content of Cl - % ≤	0.03	Cl - ppm	120