Product name：Sodium pyrophosphate (Food grade)
I. Chemical Name: Anhydrous Sodium pyrophosphate, Sodium pyrophosphate decahydrate
Ⅱ. Molecular formula: Na4P2O7 Na4P2O7·10H2O
Ⅲ. Molecular Weight: 265.90 446.05
IV. Properties: Sodium pyrophosphate decahydrate is colorless crystal or white crystalline powder. Anhydrous matter is white powder, Aq. solution is basic.
V. Quality Standard:
| Index name | Food grade: GB 25557-2010/FCC | |
| Anhydrous | Sodium pyrophosphate decahydrate | |
| 96.5-100.5 | - | |
| Assay(Na4P2O7)≥% | ||
| Assay (as Na4P2O7·10H2O)≥% | 0.20 | 0.20 |
| Water insoluble ≤% | 9.9-10.7 | |
| PH value(10g/L Solution ) | Past test | |
| Orthophosphate | 0.0003 | |
| As ≤% | 0.001 | 0.001 |
| Heavy metals (as Pb) ≤% | 0.005 | 0.005 |
| F≤% | 0.0004 | 0.0004 |
| Pb ≤% | 0.20 | 0.20 |
| Loss on heat % | ≤0.50 | 38.0-42.0 |
