| Melting Point | 35.0°C |
| Solubility in Water | Solubility in water: 218g/L (20°C). Other solubilities: practically insoluble in alcohol |
| Assay Percent Range | 99% |
| Packaging | Plastic bottle |
| Linear Formula | Na2HPO4·12H2O |
| Chemical Name or Material | Sodium phosphate, dibasic dodecahydrate |
| Grade | Extra Pure |
| Merck Index | 15,8789 |
Classification of the substance or mixture
GHS Label elements, including precautionary statements
Hazards not otherwise classified (HNOC) or not covered by GHS
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Disodium Phosphate Dodecahydrate is an inorganic compound with the formula Na₂HPO₄·12H₂O. It is the hydrated form of disodium hydrogen phosphate and appears as a white crystalline solid. It is widely used in laboratories, food processing, and industrial applications.
Common uses of Disodium Phosphate Dodecahydrate include its role as a buffering agent, emulsifier, and pH regulator. It is used in food additives, detergents, water treatment, pharmaceuticals, and analytical chemistry.
In labs, it's often used as a reagent in buffer solutions, particularly in biochemical and pharmaceutical research, to maintain stable pH levels during experiments.
The melting point of Disodium Phosphate Dodecahydrate is approximately 35–37°C (95–98.6°F). At this temperature, the compound begins to lose its water of hydration and transition into an anhydrous or lower hydrate form.
The boiling point of Disodium Phosphate Dodecahydrate is not well-defined because the compound decomposes upon heating, losing its hydration water before it reaches a true boiling point. It is not typically boiled in standard procedures.
