DISODIUM PYROPHOSPHATE- ▸ Leavening acid: Slow-acting acid for baking powders and prepared mixes.
- ▸ Sequestrant: Chelating and sequestering agent for food and industrial systems.
- ▸ Metal treatment: Component of metal-cleaning, phosphatizing, and electroplating baths.
- ▸ Buffering and dispersing: pH buffer and dispersing aid in formulations.
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →Sodium acid pyrophosphate (CAS 7758-16-9), also disodium dihydrogen pyrophosphate (Na2H2P2O7), is a polyphosphate salt. It is used as a leavening acid in baking powders and as a food acidulant, sequestrant, and buffering agent, and industrially as a chelating and dispersing agent and a component of metal-cleaning and electroplating baths.
Frequently Asked Questions
What is sodium acid pyrophosphate used for?
Sodium acid pyrophosphate (CAS 7758-16-9, Na2H2P2O7) is used as a slow-acting leavening acid in baking powders and prepared mixes, a food acidulant/sequestrant and buffering agent, and industrially as a chelating and dispersing agent and a component of metal-cleaning, phosphatizing, and electroplating baths.
Is sodium acid pyrophosphate natural or artificial?
It is a manufactured (synthetic) polyphosphate salt, disodium dihydrogen pyrophosphate. It is produced industrially rather than isolated from a natural source, and is supplied here for food and industrial use.
Is sodium acid pyrophosphate water soluble?
Yes. Sodium acid pyrophosphate is soluble in water, which supports its function as a leavening acid, sequestrant, and dispersing/buffering agent in aqueous systems. Solubility specifics are noted on the technical data.
What is the E number / identity of sodium acid pyrophosphate?
It is disodium dihydrogen pyrophosphate, CAS 7758-16-9, formula H2Na2O7P2; it is one of the diphosphates within the E450 group used as a leavening acid. Exact grade and specification are confirmed on the product CoA.
How is sodium acid pyrophosphate supplied and quoted in bulk?
It is supplied as a powder under HS 2835.39, polyphosphates, in bulk packaging for food and industrial users. Pricing is volume- and market-dependent; request a quote with your grade (e.g. food vs. technical) and target quantity. A CoA and SDS accompany shipment.