Sodium acid pyrophosphate (SAPP) is a chemical compound that is commonly used in a variety of industrial and consumer products. Some of the main functions and benefits of using SAPP include:

For foods: 

1. Leavening agent: SAPP is commonly used as a leavening agent in baking, where it helps to release carbon dioxide gas and create a light, fluffy texture in baked goods such as cakes, pancakes, and waffles. it is the acid components used in commercial baking powders. It is reactive not only with sodium bicarbonate, but also with calcium salts, proteins and heat. - It gives baking powder the time and temperature element contributing to the 'Double Acting' power. - Used in bakery products for cake donuts, biscuits or cake mixes, in meat products to improve water retention; and in seafood canning and in potato treatment. - It also benefits longer shelf life, dough conditioners and prevents food discoloration. - Usage:1g of Sodium Bicarbonate to 1.38g SAPP or as recipe indicates

2. Cheese manufacturing: SAPP is used in the manufacturing of cheese, to help control the pH level and improve the texture of the cheese.

3. Meat processing: SAPP is used in meat processing, to help tenderize the meat and improve its texture.

4. Cleaning agent: SAPP is used as a cleaning agent in industrial processes, to help remove dirt and grime from surfaces.

5. Brightening of fruits and vegetables: SAPP can be used to maintain the color of fruits and vegetables, keeping them looking fresh and bright.

6. For pet foods, it is used as palatants (to make the foods more palatable) .

7. Waste treatment: SAPP is used in waste water treatment plants to help remove impurities and contaminants.

8. Phosphorus recovery: SAPP is used in the recovery of phosphorus in wastewater treatment, helping to prevent the eutrophication of water bodies.

9. For lab, as a buffering agent,  as a chelating agent in antimicrobial studies.