Disodium phosphate, 0AQ
General Product Information
| Article | Disodium phosphate, 0AQ |
| Synoniemen | Acetest, Dibasic sodium phosphate, Disodium phosphate anhydrate, Disodium hydrogen orthophosphate, Disodium hydrogen phosphate, Sodium phosphate dibasic |
| CAS No. | 7558-79-4 |
| EEG No. | – |
| EINECS No. | 231-448-7 |
| IMO | – |
| Tariff Code | 28352200 |
| UN No. | – |
| VLG/ADR | – |
Description
Disodium phosphate 0AQ is an inorganic salt composed of sodium and phosphate ions. It comes in the form of white crystals or a white powder. As an anhydrous form, it contains no water molecules and is highly soluble in water. Disodium phosphate anhydrous is widely used in various industrial applications, including Water Treatment and cleaning applications. It is used because of its stabilizing and buffering properties, as well as its ability to regulate pH in various systems.
Characteristics
- Odor: Odorless.
- Hygroscopic: Yes.
- Color: White.
- Grade: Technical.
- Solubility: Highly soluble in water.
- Taste: –
- Shape: crystalline powder or granules.
Physical & Chemical Properties
| Chemical Structure | Na2HPO4 |
| Molar Weight | 141.96 g/mol |
| Melting Point | 200°C |
| Boiling Point | – |
| Density | 1.76 g/cm³ |
| Refractive Index | – |
| pH. | 9.3 – 10.1 (on 1% solution) |
Applications
Disodium phosphate 0aq is applied in various ways, for instance:
1. Water Treatment
It is used to regulate pH in industrial water treatment systems, such as in cooling water circuits, boilers and other systems where scale formation may occur. It prevents scale formation by stabilizing calcium and magnesium levels in the water.
2. Cleaning Agents
Disodium phosphate is added to cleaning products, such as dishwashing detergents, to improve their effectiveness. It helps at removing scale and other mineral stains.
3. Laboratory Applications
It is used as a buffer solution in scientific experiments, especially in biochemical and microbiological analyses.
Interessing Links
- CAS Common Chemistry – Disodium phosphate
- European Chemicals Agency (ECHA) – For chemical information and regulations.
- PubChem – Dibasic Sodium Phosphate – Chemical information by the National Library of Medicine of the National Center for Biotechnology Information (NIH-NCBI).
- Wikipedia – Disodium phosphate