... white powder. slightly soluble in water, density 2.95-3, melting point 1000°C, easily absorbing water and become damp, decomposed ... , anti-rubbing filling agent of resin and rubber, electrolytic liquid for production of iron alloy rimmed steel and furnish of emery ... pengbochem dot cn good quality Synthetic Cryolite, sodium fluoroaluminate 53% for aluminium