E452v - Ammoniumpolyphosphat

Origin

Ammonium polyphosphate (APP) is an inorganic salt of polyphosphoric acid and ammonia. It is not naturally occurring and is synthetically produced. The degree of polymerization (n) can vary, leading to different forms of APP. It is commonly manufactured by reacting phosphoric acid with ammonia under controlled conditions.

Usage

In the food industry, ammonium polyphosphate is primarily used as a flame retardant in coatings and plastics that come into contact with food. It is not typically added directly to food as an ingredient due to its primary function being related to food packaging safety. However, it may be present in trace amounts due to migration from packaging materials. Its flame-retardant properties are valuable in reducing the risk of fire in food processing and storage environments. It also finds applications in fertilizers and as a leavening agent.

Side Effects

While ammonium polyphosphate is not directly consumed as a food additive, potential exposure through migration from packaging is a concern. Studies on the toxicity of polyphosphates suggest that high levels of phosphate intake can disrupt calcium metabolism and potentially lead to kidney problems, especially in individuals with pre-existing renal conditions. However, the levels of migration from packaging are typically very low and considered safe by regulatory bodies. No ADI (Acceptable Daily Intake) has been established for ammonium polyphosphate as a direct food additive, reflecting its limited direct use in food.

Regulatory Status

Ammonium polyphosphate is regulated as an indirect food additive, specifically concerning its use in food packaging materials. Regulatory bodies like the FDA (in the US) and EFSA (in Europe) have guidelines and limits on the permissible migration levels of substances from packaging into food. These regulations aim to ensure that any potential exposure to ammonium polyphosphate from packaging remains within safe limits. Specific regulations depend on the application and the type of food packaging involved.