Product name：Sodium pyrophosphate (Industrial 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 | Industrial grade: HG/T2968-1999 | |||
| Anhydrous Sodium pyrophosphate | Sodium pyrophosphate decahydrate | |||
| Top grade | First grade | Qualified product | - | |
| Assay(Na4P2O7)≥% | 97.5 | 96.5 | 95.5 | |
| Assay (as Na4P2O7·10H2O)≥% | - | 98.0 | ||
| Water insoluble ≤% | 0.15 | 0.10 | ||
| PH value(10g/L Solution) | 9.9-10.7 | |||
| Orthophosphate | pass test | |||
| As ≤% | - | |||
| Heavy metals (as Pb) ≤% | - | |||
| F≤% | - | |||
| Loss on heat % | - | |||
VI. Packing: PE bag lined composite plastic woven bag. Net wt 25KG, or Net wt 40KG.
