1.Chemical name: Tetrasodium Pyrophosphate, Sodium Pyrophosphate
2.M. F.:Na4P2O7 3.M. W.:265.90
3.Physical properties: White monoclinic crystal powder, it is soluble in water, insoluble in ethanol. Its water solution is alkalic. It is liable to deliquesce by moisture in the air.
4.Quality standard: (GB1886.339-2021,FCC-V, E 450 (iii) )
| Name of index |
GB1886.339-2021 |
FCC-V |
E 450 (iii) |
| Sodium Pyrophosphate Na4P2O7 ,% |
96.5-100.5 |
95.0-100.5 |
≥95.0(on the ignited basis ) |
| P2O5 , % |
- |
- |
52.5-54.0 |
| Identification |
- |
- |
Positive tests for calcium and for phosphate |
| Water Insoluble , ≤% |
0.2 |
0.2 |
0.2 |
| PH (1% aqueous solution) |
9.9-10.7 |
- |
9.8-10.8 |
| Arsenic (As) ,≤% |
0.0003 |
0.0003 |
0.0001 |
| Heavy Metal (as Pb) ,≤% |
0.001 |
- |
- |
| Fluoride (as F) , ≤% |
0.005 |
0.005 |
0.001 |
| Loss on Drying , ≤% |
0.5 |
0.5 |
- |
| Orthophosphate |
pass test |
- |
- |
| Pb ,≤% |
0.0004 |
0.0004 |
0.0001 |
| Loss on Ignition(for the anhydrous salt),≤% |
0.5 |
- |
0.5 |
| Cadmium, ≤% |
- |
- |
0.0001 |
| Mercury , ≤% |
- |
- |
0.0001 |
6.
Usage: In food industry, used as quality improver, applied to can, fruit drinks, milk product, bean milk and so on.
7.Packing: In 25kg composite plastic woven/paper bag with PE liner.
8.Storage and transport: It should be stored in a dry, ventilative and clean warehouse; kept away from moisture, heat and stored separately from poisonous substances. Handled with care, so as to avoid damage to the packing bags.
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