| ITEM | STANDARD |
| Na2H2P2O7 | 95.0% MIN |
| APPEARANCE | WHITE POWDER |
| WATER INSOLUBLE | 1.0% MAX |
| ARSENIC( AS) | 3PPM MAX |
| LOSS ON DRYING | 0.5% MAX |
| CADMIUM (PPM) | 1 MAX |
| LEAD (PPM) | 4 MAX |
| MERCURY (PPM) | 1 MAX |
| HEAVY METAL( PB) | 15PPM MAX |
| FLUORID( PPM) | 10 MAX |
| PH VALUE | 3.5-4.5 |