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Product Deail
Disodium hydrogen phosphate heptahydrate
【Another name】Disodium hydrogen phosphate.
【Description】Colorless crystal, soluble in water, alkaline in aqueous solution, easy to weathering in dry air. Relative density 1.52, 35.1℃ melt and remove 5 molecules of crystal water, 100℃ into anhydrous salt, 300℃ decomposition into sodium pyrophosphate.
|
Test items |
GR |
AR |
CP |
Other |
|
Assay(HNa2O4•7H2O) /% |
≥99.0 |
≥99.0 |
≥98.0 |
Custom |
|
pH(50g/L,25℃) |
9.1-9.4 |
9.1-9.4 | 9.1-9.4 | |
|
Clarity of solution |
Passes test | Passes test | Passes test | |
|
Water insoluble /% |
≤0.005 |
≤0.005 |
≤0.01 |
|
| Chloride(Cl) /% |
≤0.000 5 |
≤0.001 |
≤0.003 |
|
| Sulfate(SO4) /% |
≤0.005 |
≤0.005 |
≤0.03 |
|
|
Total nitrogen(N) /% |
≤0.001 |
≤0.002 |
≤0.005 |
|
|
Arsenic(As) /% |
≤0.000 05 |
≤0.000 05 |
≤0.002 |
|
| Potassium(K) /% |
≤0.005 |
≤0.01 |
≤0.05 |
|
|
Iron(Fe) /% |
≤0.000 5 |
≤0.000 5 |
≤0.001 |
|
|
Heavy metals (as Pb) /% |
≤0.001 |
≤0.001 |
≤0.002 |
【Use】Used for boiler water softener; Flame retardants for fabrics, wood and paper; Production of detergent; For glazes and soldering; Used as a stabilizer for hydrogen peroxide bleaching in printing and dyeing; Culture agent of MONOsodium glutamate, erythromycin, penicillin, streptomycin and sewage biochemical treatment products; Electroplating chemicals; In the food industry, it is used for manufacturing baking powder, quality improver, emulsifier, nutrient fortifier, fermentative agent, binder.
