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Food-grade sodium hexametaphosphate complies with food safety standards and has undergone strict inspection and certification to ensure its safe use in food processing. It is commonly used as a food additive. Its main uses include emulsifiers, leavening agents, humectants and stabilizers. It is widely used in meat products, seafood products, baked goods and condiments.

The purity of industrial grade sodium hexametaphosphate may not be as high as food grade, and it is usually used in industrial production, such as water treatment, detergents, metal corrosion inhibitors and other fields. Its main function is to be used as scale inhibitor and anti-scaling agent, detergent and ion exchanger.