| CAS No.: | 7558-79-4 |
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| Other Names: | na2hpo4 |
| MF: | na2hpo4 |
| EINECS No.: | 10039-32-4 |
| Place of Origin: | China (Mainland) |
| Brand Name: | VIDAR |
| Model Number: | D |
Quick Details
Specifications
disodium hydrogen phosphate DSP na2hpo4.12h20
Molecular Formula: Na2HPO4?nH2O (n=0,n=12)
Molecular weight: 141.96(n =0), 357.96(n =12)
Executive Standard: GB 25568-2010(Food Grade) HG/T2965-2009(Technical Grade )
Properties:
The dodecahydrate is white crystal with relative density 1.52, weathered in the air easily, losing quinque-molecular crystallization water easily, forming anhydride after losing crystallization water at 100°C, decomposing to sodium pyrophosphate at 50°C; anhydride is white powder with hygroscopy. Both are easily soluble in water, aqueous solution is slightly alkaline, alcohols insoluble.
Uses:
Boiler water softening agent, fire retardant agent of textile, wood and paper, glaze and welding agent; used to produce detergent, printing cleaner and dye mordant; hydrogen peroxide bleaching stabilizer in printing and dyeing industry, rayon filling (increasing the intensity and elasticity); raw material for producing sodium pyrophosphate and other phosphate, cultured agent for gourmet, erythrocin, penicillin, streptomycin and sewage treatment equipment; also used in electroplating and tanning.
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Specification |
Technical grade |
Food grade |
Reagent grade |
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Dodecahydrate |
Anhydrous |
Dodecahydrate |
Anhydrous |
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Specification |
Reagent grade (ar) |
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Main content %≥ |
97.0 |
97.0 |
98.0 |
98.0 |
Main content NaH2PO4. 12H2 O %≥ |
99.0 |
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PH(50g/l) |
9.1-9.4 |
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PH of 10g/L water solution |
8.8-9.2 |
8.5-10.0 |
8.8-9.2 |
8.5-10.0 |
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Clarity |
Qualified |
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Fluoride (F) %≤ |
0.05 |
--- |
0.014 |
0.25 |
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Sulphate (as SO42-) % ≤ |
0.7 |
0.7 |
0.25 |
0.25 |
Water insoluble % ≤ |
0.005 |
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Fluoride (F) %≤ |
0.05 |
0.005 |
0.05 |
0.005 |
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Choride (CL) % ≤ |
0.001 |
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Heavy metals(as Pb) %≤ |
--- |
--- |
0.001 |
0.001 |
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Sulphate (SO4) % ≤ |
0.005 |
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Arsenic (as As) %≤ |
0.005 |
0.005 |
0.0003 |
0.0003 |
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Nitrogen (N) % ≤ |
0.002 |
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Water insoluble % ≤ |
0.05 |
0.20 |
0.20 |
0.20 |
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Arsenice(As) % ≤ |
0.0005 |
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Iron (Fe) % ≤ |
0.05 |
--- |
--- |
--- |
potassium(K) % ≤ |
0.01 |
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Lead(Pb) % ≤ |
--- |
---- |
0.0004 |
0.0004 |
Iron (Fe) % ≤ |
0.0005 |
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Loss on drying % ≤ |
--- |
---- |
61 |
5.0 |
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Heavy metal(Pb) % ≤ |
0.0005 |
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