Potassium fumarate

Potassium fumarate (CAS 7704-72-5), also known by its food additive designation E366, is the potassium salt of fumaric acid used commercially as a pH buffer and acidulant. Dipotassium fumarate offers a milder acidic profile than free fumaric acid.

This makes it suitable for applications where controlled acidity and potassium fortification are both priorities. In food and beverage manufacturing, it functions as an acidulant and pH regulator in soft drinks and powdered drink mixes.

It is also used in fruit-flavored products where tartness control is critical. Bakery and confectionery producers use it to adjust dough pH and improve texture consistency in finished products to ensure high quality standards.

In pharmaceutical formulations, potassium fumarate serves as a buffering agent in oral solid dosage forms and effervescent preparations. These applications require stable pH and potassium content as essential formulation requirements.

It also appears in dietary supplement blends as a potassium source combined with fumarate anion delivery. Potassium fumarate is typically supplied as a white crystalline powder for various industrial and commercial uses.

Food-grade material conforming to E366 specifications is the most commonly traded form. Pharmaceutical-grade material is also available to USP or BP standards for highly regulated applications and manufacturing processes.

Bulk supply is standard for industrial buyers, with smaller packaging available for formulation and QA sampling purposes. This ensures that manufacturers can meet their specific production needs while maintaining strict quality control.