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Chemical structure of Disodium Phosphate Dodecahydrate | 10039-32-4
CAS: 10039-32-4
SKU: S2873
Disodium Phosphate Dodecahydrate | SKU: S2873
Chemical structure of Disodium Phosphate Dodecahydrate | 10039-32-4
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Specifications

Melting Point35.0°C
Solubility in WaterSolubility in water: 218g/L (20°C). Other solubilities: practically insoluble in alcohol
Assay Percent Range99%
PackagingPlastic bottle
Linear FormulaNa2HPO4·12H2O
Chemical Name or MaterialSodium phosphate, dibasic dodecahydrate
GradeExtra Pure
Merck Index15,8789

Applications

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Product Description

Disodium phosphate dodecahydrate (PubChem CID: 61456) — also known as disodium hydrogen phosphate dodecahydrate, sodium phosphate dibasic dodecahydrate, disodium orthophosphate dodecahydrate, and sodium monohydrogen phosphate dodecahydrate — is a hydrated salt form of phosphoric acid disodium salt. It is also referenced as UNII-E1W4N241FO.

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FAQs: Disodium Phosphate Dodecahydrate

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.