PENTAPOTASSIUM TRIPHOSPHATE- ▸ Detergents: Builder and sequestrant in cleaning and washing formulations
- ▸ Water treatment: Sequestrant for hardness ions and scale control
- ▸ Food processing: Texturizer and thickener
- ▸ Personal care: Chelating and buffering agent
- ▸ Chemical processing: Intermediate and laboratory reagent
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 →Potassium tripolyphosphate (CAS 13845-36-8), also known as pentapotassium triphosphate, is an inorganic polyphosphate supplied as a hygroscopic powder. It is used as a chelating and buffering agent, a builder in cleaning and washing formulations, a water-treatment sequestrant, and a texturizer in food applications.
Regulatory & registration requirements
- TSCA (US):
- REACH (EU):
- EC number: 237-574-9
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Solutions Using This Product
Process-solution guides on this site that specify this chemistry:
- Water Retention & Yield in Meat, Poultry & Seafood (Phosphates) (Food & Beverage)
Frequently Asked Questions
What is potassium tripolyphosphate used for?
Potassium tripolyphosphate (KTPP, CAS 13845-36-8), also called pentapotassium triphosphate, is used as a builder and sequestrant in cleaning and washing formulations, as a water-treatment sequestrant for hardness ions and scale control, as a chelating and buffering agent in personal care, and as a texturizer in food applications.
What is tripolyphosphate in food?
In food processing, tripolyphosphates act as texturizers and water-binding agents that improve moisture retention and texture. The potassium form (KTPP) is one such polyphosphate; it is supplied to food manufacturers as a hygroscopic powder.
Is potassium tripolyphosphate the same as sodium tripolyphosphate (STPP)?
No. They are distinct polyphosphate salts — KTPP carries potassium counterions and STPP carries sodium. They share similar builder and sequestrant functions but differ in solubility and ionic contribution. Specify which you need when ordering.
Is potassium tripolyphosphate water soluble?
Yes, potassium tripolyphosphate is water-soluble and hygroscopic, which supports its role as a sequestrant and builder in aqueous cleaning and water-treatment systems. Refer to the technical data sheet for solubility values.
What grades and packaging are available in bulk?
We supply KTPP as a hygroscopic powder in industrial packaging including bags and drums, with a CoA per lot. It classifies under HS 2835.39. Request a quote with your target volume and grade for current bulk pricing.
What is the REACH and TSCA regulatory status of Potassium Tripolyphosphate (KTPP)?
Potassium Tripolyphosphate (KTPP) (CAS 13845-36-8) is subject to U.S. TSCA Inventory requirements; supplying it into the EU requires valid REACH registration ((EC) No 1907/2006). RawSource cannot verify a third-party supplier's registrations — buyers should require documented TSCA and REACH compliance for their jurisdiction and volume (EC 237-574-9).