TSPP Tetra Sodium Pyrophosphate,Food Grade
| Items | Standard request | test result |
| Assay (as Na4P2O7),% | 96.5.0Min | 97.8 |
| P2O5,% | 52.5-54.0 | 52.8 |
| pH Value (1%) | 9.9-10.7 | 10.2 |
| Arsenic ( As ),mg/kg | 1.0Max | 0.05 |
| Fluoride ( F ),mg/kg | 50.0Max | 9.0 |
| Cadmium (Cd) ,mg/kg | 1.0Max | 0.02 |
| Mercury (Hg),mg/kg | 1.0Max | 0.02 |
| Lead ( Pb ),mg/kg | 4.0Max | 0.2 |
| Water insoluble,% | 0.2Max | 0.04 |
| Loss on Ignition(105 °C, 4 hours then 550°C 30 minutes),% | 0.5Max | 0.2 |