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Product Deail
Sodium dihydrogen phosphate dihydrate
【Another name】Sodium dihydrogen phosphate.
【Description】Colorless crystal or white powder, deliquescent. Relative density 1.91, melting point 60℃, dehydration at 105℃, become anhydrous. Soluble in water, insoluble in ethanol.
|
Test items |
AR |
CP |
Other |
|
Assay(NaH2PO4•7H2O) /% |
≥99.0 |
≥98.0 |
Custom |
|
pH(50g/L,25℃) |
4.2-4.6 |
4.2-4.6 |
|
|
Clarity of solution /# |
≤3 |
≤5 |
|
|
Water insoluble /% |
≤0.01 |
≤0.02 |
|
| Chloride(Cl) /% |
≤0.005 |
≤0.01 |
|
| Sulfate(SO4) /% |
≤0.005 |
≤0.01 |
|
| Nitrate(NO3) /% |
≤0.001 |
≤0.002 |
|
|
Ammonium(NH4) /% |
≤0.002 |
— |
|
| Arsenic(As) /% |
≤0.000 2 |
≤0.000 5 |
|
| Potassium(K) /% |
≤0.02 |
≤0.1 |
|
| Iron(Fe) /% |
≤0.001 |
≤0.005 |
|
| Heavy metals (as Pb) /% |
≤0.001 |
≤0.005 |
|
|
Ammonia sediments /% |
≤0.01 |
≤0.02 |
【Use】Used as an analytical reagent; Buffer; Water softener. Preparation of bacterial culture medium; Pharmaceutical excipients; Food additives; Feed additives.
