First, the chemical name: sodium tripolyphosphate Second, the formula: Na5P3O10 Third, MW: 367.86 four, CAS: 7758-29-4 five properties: white powder, melting point 622 ℃, soluble in water, calcium and magnesium and other metal ions chelating capacity significantly, can soften hard water, the suspension into solution, slightly alkaline, non-corrosive, an inorganic surfactant, lubricating oil and fat has strong emulsification, bulk density usually divided into low-density 0.35-0.5g / cm3, medium density 0.51-0.65g / cm3, high density 0.66-0.9g / cm3. Sixth, use: food industry for canned food, fruit juice drinks, dairy products, soy milk and other quality improver, the main tender for the canned ham, canned beans soften Yuba manipulation can also be used as softeners and thickeners. 7, Packing: lined with polyethylene plastic bag, coat plastic woven bag of 25Kg. Quality Index Specification GB25566-2010 tripolyphosphate main content (Na5P3O10 dollars), w /% ≥ Assay Na5P3O10 85.0 Total phosphate (as P2O5), w /% P2O5 56.0 ~ 58.0 Water-insoluble, w /% ≤ Insoluble In Water 0.1 heavy metals (Pb), mg / kg ≤ Heavy Metals (as Pb) 10 Lead (Pb), mg / kg ≤ Lead 4 arsenic (As), mg / kg ≤ Arsenic (As) 3 fluoride (in F meter), mg / kg ≤ Fluoride (F) 50