Disodium dihydrogen pyrophosphate is a chemical compound, a sodium salt of pyrophosphoric acid.

The name describes the structure of the molecule.

• Disodium. Indicates the presence of two sodium atoms in the molecule. These sodium atoms make the compound water-soluble and give it alkaline properties.
• Dihydrogen. Means there are two hydrogen atoms bonded to the phosphate.
• Pyrophosphate. Refers to a molecule made up of two phosphate units bonded together. Phosphates are salts or esters of phosphoric acid containing the anion PO₄³⁻.

Description of raw materials used in production.

• The primary raw materials used in the production of disodium dihydrogen pyrophosphate are phosphoric acid and sodium hydroxide or sodium carbonate.

Step-by-step summary of its industrial production process.

• Phosphoric acid is reacted with sodium hydroxide or sodium carbonate to form sodium orthophosphate.
• The sodium orthophosphate is then reacted with further phosphoric acid to form sodium pyrophosphate.
• The product is subsequently purified through filtration and crystallization processes.
• Finally, the purified sodium pyrophosphate is dried and ground to obtain the desired form of the product.

Form and color.

It appears as a white or colorless crystalline powder.

Commercial applications:

Food Preservative. Disodium dihydrogen pyrophosphate is used as a preservative in many food products to extend their shelf life.

Texture Improvement. It's often added to potato-based products to maintain color and prevent blackening.

Acidity Regulator. It functions as a pH regulator in various food preparations.

Meat Industry. Used as a stabilizing agent and to enhance the texture of meat-based products.

Leavening Agent. In some baked goods, it can serve as a leavening agent.

Food Research. It's being investigated for potential new applications in the food industry and to better understand its properties.

• Molecular Formula  Na₂H₂P₂O₇
• Molecular Weight  221.94 g/mol
• CAS  7758-16-9
• UNII    H5WVD9LZUD
• EC Number   231-972-6
• DTXSID7044261