Cryolite

• Category :

  Inorganic chemicals

• Synonyms :

  synthetic cryolite;Cryolite;EPA Pesticide Chemical Code 075101;Kryolith [German];Natriumaluminiumfluorid;Natriumhexafluoroaluminate [German];Aluminum sodium fluoride (Na3AlF6);Aluminum sodium hexafluoride (AlNa3F6);Aluminum trisodium hexafluoride;Trisodium aluminum hexafluoride;Sodium fluoroaluminate (Na3AlF6);Aluminate(3-), hexafluoro-, sodium (1:3), (OC-6-11)-;Aluminate(3-), hexafluoro-, trisodium, (OC-6-11)-;Trisodium hexafluoroaluminate(3);aluminum sodium fluoride (1:3:6);aluminum sodium hexafluoride;artificial cryolite;Sodium fluoroaluminate;Aluminum sodium fluoride;Sodium aluminum fluoride;Sodium Aluminum Fluorid;

• CAS NO :

  15096-52-3

• EC NO :

  239-148-8

• Molecular Formula :

  Na₃AlF₆

• Molecular Weight :

  209.9402

• Main Specifications :

• InChI :

  InChI=1/Al.6FH.3Na/h;6*1H;;;/q+5;;;;;;;3*+1/p-6/rAlF6.3Na/c2-1(3,4,5,6)7;;;/q-1;3*+1

• Product description :

  CAS No.: 15096-52-3;1344-75-8

  Molecular Formula：Na₃AlF₆

  Quality Standard: GB/T4291—2007

  Specifications：

  Items   Class	Chemical Composition ( Concentration )/ %
  	Not less than		Not more than
  	F	Al	Na	SiO2	Fe2O3	SO4	CaO	P2O5	H2O	Loss on ignition , 550℃30min
  CH-0	52	12	33	0.25	0.05	0.6	0.15	0.02	0.20	2.0
  CH-1	52	12	33	0.36	0.08	1.0	0.20	0.03	0.40	2.5
  CM-0	53	13	32	0.25	0.05	0.6	0.20	0.02	0.20	2.0
  CM-1	53	13	32	0.36	0.08	1.0	0.60	0.03	0.40	2.5

  Physical properties: Cryolite is a kind of complex compound or double salt. Caused by impurity, the appearance can be white, gray ,yellow powder or crystalline particles. It's melting point is 1025℃, stacking density is 0.6-1.0g/L, true density is 2.95-3.05g/cm 3 , heat of formation is 225KJ, specific gravity is 2.75-3.00g/cm 3 , heat of fusion is 107KJ. Slightly solubte in water.

  Applications
  Aluminium- metallurgy: as component of fluxing agents, protective and refining salts;
  Production of abrasives: as active filler in resinbonded abrasives for metal treatment;
  Production of enamel, glazing frits and glass: as flux and opacifying agent;
  Production of soldering agent: as component for fluxing agents;
  Production of welding agents: as component of welding rod coatings and welding powders;
  Blasting and pyrotechnics: for fireworks;
  Metal surface treatment: as component in pickling pastes for stainless steel.

  Packing: In 50kgs PP bags, Lined with high-pressure plastic film, or according to contract's requirements.

• Molecular Structure :