Sodium pyrophosphate
Sodium pyrophosphate (also known as tetrasodium pyrophosphate, TSPP or sodium diphosphate) is a chemical compound of sodium and pyrophosphate. It is a white, crystalline powder that is soluble in water and insoluble in ethanol. Sodium pyrophosphate is used in a variety of applications, including as a buffering agent, emulsifier, dispersing agent, and thickening agent in the food industry. It is also used in detergents, water treatment, and dental products.
Chemical Properties[edit | edit source]
Sodium pyrophosphate is a salt of pyrophosphoric acid and sodium hydroxide. It has the chemical formula Na4P2O7. The compound is made up of four sodium ions (Na+) and one pyrophosphate ion (P2O7^4-). Sodium pyrophosphate is a white, crystalline powder that is soluble in water and insoluble in ethanol. It has a melting point of 988 degrees Celsius.
Uses[edit | edit source]
Sodium pyrophosphate has a wide range of uses in various industries. In the food industry, it is used as a buffering agent, emulsifier, dispersing agent, and thickening agent. It is also used in the production of processed foods, including canned seafood, processed meats, and potato products.
In the detergent industry, sodium pyrophosphate is used as a water softener and detergent builder. It helps to remove calcium and magnesium ions from water, which can interfere with the cleaning process.
In the water treatment industry, sodium pyrophosphate is used to prevent the formation of scale and to control water hardness.
In the dental industry, sodium pyrophosphate is used in toothpastes and mouthwashes as a tartar control agent. It helps to remove calcium and magnesium from saliva, preventing them from depositing on teeth.
Safety[edit | edit source]
Sodium pyrophosphate is generally considered safe for use in food and other products. However, excessive consumption can lead to imbalances in mineral levels in the body, particularly of calcium and phosphorus. It can also cause gastrointestinal upset, including nausea, vomiting, and diarrhea.
See Also[edit | edit source]
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