Sodium fluoride is a colorless cubic or tetragonal crystal. Sensitive to moisture. Insoluble in ethanol. Partial hydrolysis of aqueous solution is alkaline. The pH value of the newly prepared saturated solution is 7.4. Its aqueous solution can make glass hairy, but its dried crystals or powder can be stored in glass bottles.
Extended data:
Main uses of sodium fluoride:
1. Sodium fluoride (NAF) is an important fluoride salt for manufacturing other fluoride raw materials.
2. Used as agricultural pesticides and fungicides.
3. Used as wood preservative, water treatment agent, ceramic pigment, manufacturing boiling steel, light metal fluoride treatment agent, smelting and refining, protective layer and UF3 adsorbent in nuclear industry.
4. Improve the wear resistance of sealing materials and brake pads in production. Mechanical blade planer inserts steel to increase welding strength.
5. Enamel pharmaceutical industry, paper making and building materials.
6. Used as phosphating accelerator in coating industry to stabilize phosphating solution, refine phosphating and improve the performance of phosphating film.
Baidu encyclopedia-sodium fluoride