Cryolite Na3AlF6

Specifications of Cryolite: Molecular FormulaNa3AlF6 Molecular Weight 209.94 PropertiesIt is a colorless monoclinic crystal, but often appears off-white, pompadour, straw yellow or black due to impurities. It has relative density of 2.9-3.0, mp 1000. It is slightly soluble in water, and its aqueous is acidic. It decomposes to release poisonous HF gas while meeting sulfuric acid. UsagesIt is used as flux in aluminum smelting, cropper insecticide, flux and whiting agent of enamel glaze. It is also used in the manufacture of milky white glass, aluminum alloy and boiling steel. Its used as ingredient of grinding wheel. Execute standardcorporation standard (see YB121-75 SpecificationParameterSuperfineGradeGradeFluorine (F)≥ 535353Aluminum (Al)≥ 131313Sodium (Na)≤ 323232Silicon Oxide (SiO2)≤ 0.250.360.40Ferric Oxide (Fe2O3)≤ 0.050.080.10Sulfate (SO42-)≤ 0.71.21.3Calcium Oxide (CaO)≤ 0.100.150.20Phosphorus Pentoxide (P2O5)≤ 0.020.030.03Water (H2O)≤ 0.40.50.8Min≤ 2.53.03.0PackingIn 25kg/50kg plastic woven bag lined with high pressure polyethylene plastic bag. Storage and Transportation