Sodium Acid Pyrophosphate Sapp CAS 7758-16-9 Food Additive CAS NO.7758-16-9

Product Description:

English name: Disodium dihydrogen pyrophosphate food grade
Alias: sodium acid pyrophosphate
Chemical formula: H2Na2O7P2
Molecular weight: 221.94
CAS login number: 7758-16-9
EINECS login number: 231-835-0
Application: Functional Water Retainer, PH Regulator and Metal Chelating Agent
Safety Description S24/25: Prevent skin and eye contact.

The physical and chemical properties of disodium dihydrogen pyrophosphate are white crystalline powder with a relative density of 1.862, which is decomposed into sodium metaphosphate when heated to above 220°C. It is soluble in water and can form chelates with Cu²⁺, Fe²⁺. Water solution and dilute sulfuric acid can be heated and hydrolyzed into phosphoric acid. Source and preparation method are dehydration of sodium dihydrogen phosphate by heating to 200°C, or dehydration of sodium carbonate by adding sodium carbonate to phosphoric acid and heating to 200°C.

application field

Used in Buffer; Expansion agent; Acidity regulator; Water retention agent; Metal chelating agent. It can be used as a boiling aid for instant noodles, a modifier for ham, sausage and flour, a puffing agent for pastries and biscuits, and an acidic component for the synthesis of puffing agents such as breads and cakes. The production time of CO2 is longer, and it is suitable for baked foods with less moisture content (such as pancakes), flavoring agent for hamburger beef cake, and sausage pH regulator. Colour improvers for vegetables, chelating agents for aquatic products and canned foods. When used as a bulking agent, proper amount of aluminium or calcium salts can be contained to control the reaction rate. It can also be used in frozen potato chips, frozen potato cakes, etc.