White powder or granular; relative density 1.86g/cm3; Soluble in water and insoluble in ethanol; If its aqueous solution is heated together with diluted inorganic acid, it will be hydrolyzed into phosphoric acid; It is hygroscopic, and when absorbing humidity, it will become into a product with hexa-hydrates; If it is heated at a temperature above 220℃, it will be decomposed into sodium meta phosphate.
Sodium Acid Pyrophosphate(SAPP) is used as a rapid starter and quality improver in the food industry for the acidic components of synthetic leavening agents such as breads and cakes. It can be used as a water retention agent for meat products such as lunch meat, cooked ham, and canned meat, and a rehydrating agent for instant noodles.
Items | Specifications |
Description | White Powder |
Assay( Na2H2P2O7) | 95.0% min |
P2O5 | 63.0-64.5% |
Water insoluble | < 0.5% |
Arsenic | 1ppm max |
Fluoride | 10ppm max |
Heavy Metal(As Pb) | 10ppm max |
Ph Value(1% solution) | 3.5~4.5(1% solution) |
Pb | 1 ppm max |
Cd | 1 ppm max |
Hg | 1 ppm max |
Loss on dry | 0.5% max |
Bulk density | 800-1050g/l |
Passing Thru 100 mesh | 95% Min |
Passing Thru 200 mesh | 85% Min |
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