Sodium polyphosphate

Sodium polyphosphate is a group of inorganic compounds that are salts of polyphosphoric acid. They are typically produced industrially by heating sodium phosphates. These salts are often found as white powders or granules.

Sodium polyphosphate functions as an emulsifier, stabiliser, and acidity regulator in food products. It helps to prevent oil and water from separating, maintains a consistent texture, and controls the pH. It is commonly used in processed cheeses, dairy products, and some meat products.

Sodium polyphosphate is an authorised food additive in the UK and is listed on the Register of Food Additive Authorisations. European food safety authorities, including EFSA, have evaluated polyphosphates. They have established an acceptable daily intake (ADI) for phosphates, indicating they have undergone safety assessments. At typical consumption levels found in food, phosphates are generally considered safe, but very high intakes from all sources could potentially affect calcium balance in the body.