Sodium monofluorophosphate (MFP) is a high value-added fluorine-containing inorganic fine chemical. It is mainly used as an anti-caries fluoride toothpaste additive. It can also be used as a preservative, bactericide, co-solvent, and metal surface oxidation agent. It can be used as a cleaning agent, food additive, corrosion inhibitor, fluoridation of drinking water, pearlescent pigment to regulate blood lipids and lipoprotein metabolism in menopausal women, increase bone mass, alleviate osteoporosis, etc.
Properties
Sodium monofluorophosphate is a white solid. The saturated aqueous solution contains 42% sodium monofluorophosphate at 25°C. Sodium monofluorophosphate decahydrate can be obtained from a 0°C aqueous solution. If the crystal water is removed by heating, it will cause hydrolysis. Anhydrous sodium monofluorophosphate can be obtained by multiple extractions with ethanol or other organic solvents.
Preparation
Theoretical amounts of sodium fluoride and sodium hexametaphosphate are uniformly mixed, heated and melted for reaction, and the outflowing material is cooled to obtain the finished product of sodium monofluorophosphate.
Purpose
Sodium monofluorophosphate can be used as an anti-caries agent, tooth desensitizer, cleaning metal surfaces and as a flux, and in the manufacture of special glass. It is generally one of the toothpaste formulas. It has basically replaced sodium fluoride in some products and has gained an advantage in competition with stannous fluoride.
