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first-class sapp sodium acid pyrophosphate reasonable price sapp sodium acid pyrophosphate 7758-16-9 with new batch stock
First-class and reasonable price sapp sodium acid pyrophosphate 7758-16-9 with new batch stock
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2.M. F.: Na2H2P2O7
3.M. W. : 221.94
4.Physical properties: Monoclinic, white crystalline powder. Density 1.86. Practically insoluble in alcohol, soluble in water. Hydrolyzes to orthophosphate on heating in acid medium. Hygroscopic, forms hexahydrate in damp air. Decomposes to metaphosphate at above 220 degree centigrade.
5.Quality standard:( FCC-IV HG2928-1999)
Name of index |
FCC-IV |
HG2928-1999 |
Content (as counted by Na2H2P2O7) ≥ % |
95.0 |
95.0 |
Water Insoluble% ≤% |
1.0 |
1.0 |
PH (1% aqueous solution) |
- |
3.5-4.5 |
Arsenic(As),ppm, ≤ |
3 |
3 |
Heavy Metals (as Pb),ppm, ≤ |
20 |
15 |
Fluoride(F),ppm, ≤ |
50 |
50 |
Pb ppm, ≤ |
2 |
- |
6.Usage: Used as rapid ferment agent, quality improver in food industry. Applied to acid component of synthetic swelling agent, such as, bread, cake. Builted with other phosphates can be applied to water retention of meat product, such as canned meat, cooked ham, meat can and instant noodles.
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