| Articolo | Grado industriale | |
| NaH4P2O4·2H2O | NaH4P2O4 | |
| NaH4P2O4·2H2O,%≥ | 98.0 | 98.0 |
| Insolubile in acqua, %≤ | 0.10 | 0.20 |
| Fe, %≤ | 0.05 | 0.05 |
| AS, %≤ | 0.01 | 0.01 |
| SO4,%≤ | 0.50 | 0.50 |
| CI,%≤ | 0.40 | 0.40 |
| F, %≤ | 0.05 | 0.05 |
| PH(10 G/L) | 4.2~4.6 | 4.2~4.6 |