As a food additive, ferric pyrophosphate is used mainly in accordance with the "National Food Safety Standard - Standard for the Use of Food Nutrient Fortifiers" (GB 14880) and relevant regulations. The specific usage standards are as follows:

·Scope of use and maximum usage amount: The maximum usage amount in infant formula foods is 1.4g/kg; in follow-up formula foods for older infants and young children, the maximum usage amount is 1.0g/kg. In addition, it can also be used in formulated milk powder (only for children's milk powder), biscuits, bread, pastries, beverages and other foods. However, the specific maximum usage amounts may vary among these food categories, and reasonable addition should be carried out according to the characteristics of the products and the requirements of the standards.

·Quality requirements: It should meet the requirements of the "National Food Safety Standard-Food Nutrient Fortifier Ferric Pyrophosphate" (GB 1903.16). This standard specifies the technical requirements, test methods, inspection rules, as well as the contents of marks, labels, packaging, transportation and storage of ferric pyrophosphate, ensuring its safety and effectiveness when used in foods.

When using ferric pyrophosphate as a food additive, it is also necessary to follow the general principles for the use of food additives, such as not causing any health hazards to the human body, not covering up the quality defects of the food itself or in the processing process, and not reducing the nutritional value of the food itself, etc.