Phosphate Related Products
- Product
- Disodium Hydrogen Phosphate
Overview
Disodium hydrogen phosphate is supplied here as the dodecahydrate (Na2HPO4·12H2O), a white crystalline powder that is readily soluble in water and gives a mildly alkaline solution. It is widely used as a buffering agent.
Also known as
Disodium phosphate (DSP); Sodium phosphate dibasic; Sodium hydrogen phosphate
CAS number
10039-32-4 (dodecahydrate); 7558-79-4 (anhydrous)
Molecular formula
Na2HPO4·12H2O
Molecular weight
358.14
Specifications
| Test items | Specifications |
| Appearance | White crystalline powder |
| Content (as Na2HPO4·12H2O) /% | ≥97.0 |
| Sulfate (as SO4) /% | ≤0.7 |
| Chloride /wt% | ≤0.05 |
| As content /% | ≤0.005 |
| F content /% | ≤0.05 |
| Water insoluble matter /% | ≤0.05 |
| pH (1%) | 9.0±0.2 |
Applications
- Buffering and pH adjustment, including boiler-water treatment
- Detergents and metal-cleaning formulations
- Raw material for sodium pyrophosphate and other phosphates
- Fire-retardant treatment of textiles and wood
Packaging
25 kg/bag (PE-lined); 1000 kg/jumbo bag.
Storage
Store in a cool, dry, ventilated warehouse with the bags kept sealed. The dodecahydrate loses crystal water in warm, dry air.
