SAPP Sodium Acid Pyrophosphate, Food Grade,Good Quality
| specifications | Industrial Grade | Food Grade | |
| 1 | Appearance | White powder | White powder |
| 2 | Assay(as Na2H2P2O7)% ≥ | 95 | 96 |
| 3 | P2O5% ≥ | 63.0-63.0 | 63.0-65.0 |
| 4 | PH Value | 3.5-4.7 | 3.5-4.6 |
| 5 | Water Insoluble %≤ | 1 | 1 |
| 6 | Fluoride (as F) % ≤ | 0.004 | |
| 7 | Heavy Metals (as Pb) % ≤ | 0.001 | |
| 8 | Arsenic (As)% ≤ | 0.0005 |