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[Chemical Knowledge]：What is sodium hexametaphosphate?

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Sodium hexametaphosphate is an inorganic salt, also known as SHMP(Sodium hexametaphosphate). It is a white crystalline solid with a molecular structure of (NaPO3)6 and a chemical formula of Na6P6O18. Sodium hexametaphosphate has excellent solubility in water and is stable in both acidic and alkaline environments. The nature, use and safety of this substance will be described below.

1. the properties of sodium hexametaphosphate

1. chemical properties: sodium hexametaphosphate is a buffer, can stabilize the pH value of dairy products. At high pH, it can complex alkaline ions, thereby reducing the bactericidal effect of ions on lactic acid bacteria and maintaining the growth and activity of lactic acid bacteria.

2. Physical properties: sodium hexametaphosphate is a kind of or white crystalline solid with high density and high melting point. It is stable at room temperature, but decomposes easily in high temperature and humid environments, releasing phosphoric acid and sodium ions. It is highly soluble and can be dissolved in water.

2. the use of sodium hexametaphosphate

1. food industry: sodium hexametaphosphate is often used in food processing, can be used as an emulsifier, buffer and chelating agent. In the process of dairy products, sodium hexametaphosphate can improve the structure and function of protein, making it easier to emulsify and stabilize. In the seasoning process of food processing, it can improve the stability and texture of condiments, and increase the taste and flavor of condiments.

2. chemical industry: sodium hexametaphosphate can also be used in paints, coatings, detergents and other chemical products. It can be used as stabilizers, colorants and emulsifiers. In the cleaning agent, it can play a role in strengthening the cleaning effect, detergency and dispersion ability of the cleaning agent.

3. pharmaceutical industry: sodium hexametaphosphate can play a thickening, antibacterial, laxative and other effects in pharmaceutical preparations. In oral care products, it improves mouthfeel and prevents tartar formation.

3. the safety of sodium hexametaphosphate

sodium hexametaphosphate is widely used in food, chemical and pharmaceutical industries, but its safety has been the focus of attention. Although sodium hexametaphosphate is not harmful to the human body in appropriate dosage, it may produce certain side effects in high dosage.

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