1.Chemical name: Sodium acid pyrophosphate
2.Molecular formula: Na2H2P2O7
3.Molecular weight:221.94
4.Cas No:7758-16-9
5.Character: It is white crystalline powder, relative density is 1.862. It's soluble in water, insoluble in ethanol. Aqueous solution is alkaline. It reacts with Fe
2+ and Mg2+ to form chelates.
6.Usage: In food industry, it is used as buffering agent, swelling agent, chelating agent, stabilizer , emulsifier and color imporver.
7.Packing: It is packed with polyethylene bag as inner layer, and a compound plastic woven bag as outer layer. The net weight of each bag is 25kg. 8.Storage and Transport: It should be stored in a dry and ventilative warehouse, kept away from heat and moisture during transportation, unloaded with care so as to avoid damage. Furthermore, it must be stored separately from poisonous substances. | Specification | GB25557-2010 | FCC VII |
| Assay(Na2H2P2O7),w/% | 93.0-100.5 | 93.0-100.5 |
| (As),mg/kg ≤ | 3 | 3 |
| Fluoride(F),mg/kg ≤ | 50 | 50 |
| Heavy Metals (Pb),mg/kg ≤ | 10 | ---- |
| Insoluble Substances , w/% ≤ | 1.0 | 1.0 |
| Lead(Pb),mg/kg ≤ | 2 | 2 |
| pH Value | 4.0±0.5 | ---- |
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