Potassium carbonate

Potassium carbonate (CAS 584-08-7), also known historically as pearl ash and commercially listed as E501i, is an inorganic alkali used across food, industrial, and chemical manufacturing sectors. It functions primarily as a pH regulator, buffering agent, and reaction catalyst in a broad range of formulations and processes. In food production, it acts as a leavening agent and pH modifier.

This compound is essential in cocoa processing, noodle manufacturing, and confectionery, where controlled alkalinity directly affects texture and color. Glass and ceramic manufacturers rely on it as a flux. It is used to lower melting points in specialty glass formulations. In textile and leather processing, it serves as a scouring and dyeing auxiliary, helping to fix dyes and regulate bath pH during finishing.

Personal care formulators incorporate it into hair care and skin preparations as an alkalizing agent to adjust product pH within target ranges. It is supplied as a white granular powder or fine powder. Granule grades are often preferred in industrial settings for reduced dust handling. Standard market grades include food-grade (E501i compliant), USP, and technical grade for various applications.

Purity levels typically range from 99% for food and pharmaceutical applications, with technical grades available for industrial use. This ensures compliance with rigorous global manufacturing requirements.