Sodium fluoride is colorless shiny crystal or white powdery compound, specific gravity 2.25, melting point 993°C boiling point 1695°C. It is soluble in water. Soluble in water (solubility 10°C 3.66, 20°C 4.06, 30°C 4.22, 40°C 4.4, 60°C 4.68, 80°C 4.89, 100°C 5.08), hydrofluoric acid, slightly soluble in alcohol.
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Uses:
Coating industry as phosphating accelerator, so that the phosphating solution is stable, phosphating refinement, improve the performance of phosphating film. Aluminum and its alloys phosphating closed with a harmful negative catalytic effect of Al3 +, so that the phosphating smoothly wood preservatives, agricultural pesticides, brewing industry fungicides, pharmaceutical antiseptics, welding flux, alkaline zincate zinc plating additives, and enamel, papermaking industry, and so on.
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