Factory-direct Potassium Fluoroaluminate: The Top Choice For Industrial Flux CAS13775-52-3

Potassium fluoroaluminate (KAlF₄), also known as potassium cryolite or potassium tetrafluoroaluminate, is an inorganic double fluoride salt. Supplied as a white to off-white crystalline powder, it is non-hygroscopic and stable in long-term storage. Its melting range matches Al-Si filler alloys (~577 °C), and the post-braze residue is non-corrosive and nearly water-insoluble, minimizing or eliminating post-braze cleaning — making it the preferred flux for Controlled Atmosphere Brazing (CAB).

Standard Packaging: 25 kg multi-ply kraft paper bags or PP woven bags with an inner PE liner, tightly sealed. 30 kg fiber drums, 1000 kg FIBC bulk bags, and custom packaging are available on request. All packages are clearly labeled and comply with general chemical transport regulations.

Transportation: Handle as a general chemical. Avoid mixing with acids or oxidizers. Load/unload gently to prevent package damage and dust dispersion.N

Store in a cool, dry, well-ventilated warehouse away from heat, ignition sources, and strong acids. Keep containers tightly sealed to prevent moisture uptake. This product is non-flammable and non-explosive; transport as a general chemical. Handle gently during loading/unloading to avoid package damage and dust dispersion.

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This product is an industrial inorganic fluoride. Wear dust masks, goggles, and protective gloves during handling. Avoid inhalation of dust and contact with skin or eyes. In case of contact, rinse immediately with plenty of water and seek medical advice. Contact with strong acids may liberate hydrogen fluoride gas; ensure adequate ventilation and protection.