A brief edit Chinese name: sodium tripolyphosphate. Chinese alias: five sodium phosphate, sodium metaphosphate coke, STPP, sodium tripolyphosphate five. English name: Sodium Tripolyphosphate. MF: Na5P3O10. Properties: white crystalline powder, good fluidity. Density: Ⅰ type density of 2.62g/cm3, type Ⅱ density of 2.57g/cm3. Melting point: 622 ℃. Solubility: soluble in water, the solution is alkaline. 20 g/100 mL (20 ℃). An important synthetic detergent additives. Condensation by different molecules made of sodium hydrogen phosphate, also known as sodium tripolyphosphate. Its molecules (Na5P3O10) has five sodium atoms, so-called five sodium. STPP for synthetic detergent majority, the minority used to soften the food and industrial water treatment. Cleaning products used additives, can be used for petroleum, metallurgy, mining, paper, water treatment and so on. Mainly used as synthetic detergent additives, synergist for soap and bar soap grease to prevent precipitation and frost. Oil and fat of a strong emulsification can be used to adjust the PH value of the buffered soap. Industrial water softener. --- Tanning agent. Dyeing auxiliaries. Paint, kaolin, magnesium oxide, calcium carbonate and other industries for the preparation of a suspension dispersing agent. Drilling mud dispersant. Paper industry as anti-oil agents. The food industry for canned food, fruit juice drinks, dairy products, soy milk and other quality improver, water retention agent. Mainly for tenderizing canned ham, canned beans soften Yuba manipulation can also be used as softeners and thickeners.