钾冰晶石 Potassium cryolite 性状：白色或浅灰色粉末，微溶于水 用途：主要用作生产铝镁浇铸含硼合金的原料，作为热焊和铜焊的溶剂。 Commodity: Potassium Aluminium Fluoride (Potassium fluoroaluminate, Potassium Cryolite, PAF) Molecular formula: KAlF4 Molecular weight: 258.28 H.S. No.: 2826.1900 CAS No.: 14484-69-6 Character: white, grey and black, slightly soluble in water. Usage: mainly used as production material of boron containing alloy cast by aluminium and magnesium, fusing agent of thermal welding and braze welding; also be used as insecticde in glass, Flux for Aluminum Brazing Specification: F 48-53% Al 17-19% Fe 0.05%% max K 27-31% Melting point: 560-600 degree Size A -1MM 高标准(Two appearance: white and black) B -40mesh 高标准(Two appearance: white and black) C 230mesh (appearance: white ) Pack: in 25kgs or 1000Kgs PP bags