Synthetic cryolite

Properties: It is crystalline white powder. Slightly soluble in water, density 2.95-3, melting point 1000oC, easily absorbing water and become damp, decomposed by strong acids like sulfuric acid and hydrochloride, then producing hydrofluoric acid and relevant aluminum salt and sodium salt. br / br / Specifications: GB4291-1999 br / Ingredient nbsp; nbsp; nbsp; Super nbsp;First grade nbsp;Second grade br / F% nbsp; nbsp;? nbsp; nbsp; nbsp; nbsp; 53 nbsp; nbsp; 53 nbsp; nbsp; nbsp; nbsp; nbsp; 53 br / Na% nbsp; ? nbsp; nbsp; nbsp; nbsp; 32 nbsp; nbsp; 32 nbsp; nbsp; nbsp; nbsp; nbsp; 32 br / Al nbsp; nbsp;? nbsp; nbsp; nbsp; nbsp; 13 nbsp; nbsp; 13 nbsp; nbsp; nbsp; nbsp; nbsp; 13 br / H2O% nbsp;? nbsp; nbsp; nbsp; nbsp; 0.4 nbsp; nbsp;0.5 nbsp; nbsp; nbsp; nbsp; nbsp;0.8 br / SiO2 nbsp;? nbsp; nbsp; nbsp; nbsp; 0.25 nbsp; 0.36 nbsp; nbsp; nbsp; nbsp; 0.4 br / Fe2O3%? nbsp; nbsp; nbsp; nbsp; 0.05 nbsp; 0.08 nbsp; nbsp; nbsp; nbsp; 0.10 br / SO4% nbsp;? nbsp; nbsp; nbsp; nbsp; 0.7 nbsp; nbsp;1.20 nbsp; nbsp; nbsp; nbsp; 1.30 br / P2O5% ? nbsp; nbsp; nbsp; nbsp; 0.02 nbsp; 0.03 nbsp; nbsp; nbsp; nbsp; 0.03 br / Ignite on 550oC?2.5 nbsp; nbsp;3.00 nbsp; nbsp; nbsp; nbsp; 3.00 br / CaO% nbsp;? nbsp; nbsp; nbsp; nbsp; 0.10 nbsp; 0.15 nbsp; nbsp; nbsp; nbsp; 0.20