Potassium Carbonate, commonly known as Potash, is a strong alkaline compound used in many textile dyeing and surface design processes, particularly valued as a pH modifier (increaser) and dyeing auxiliary. It can often be used in place of Soda Ash, although Potash is stronger and quicker acting. Used mainly for Reactive Dyes and Natural Dyeing of cellulose fibres (cotton, linen, rayon).

Potash is widely used by textile artists, dyers, and surface designers who need a reliable alkali to assist dye uptake and colour development on cellulose fibres such as cotton, linen, hemp, and rayon.

By raising the pH of the dye bath, Potassium Carbonate helps activate certain dyes and improves the bonding process between dye and fibre. This can lead to clearer colour development and improved dye fixation.

Potash may also be used in various studio processes where a strong but manageable alkali is required.

Important:
Potassium Carbonate (Potash) is not the same as Potash Alum (Potassium Aluminium Sulphate) and should not be used as a mordant in place of alum.

Features

• Strong alkaline dyeing auxiliary

• Used to raise pH in dye baths

• Assists dye activation and fixation

• Suitable for natural dye and fibre-reactive dye processes

• Commonly used with cellulose fibres

• Reliable and widely used in textile studios and workshops

Suitable For

• Natural dyeing

• Fibre reactive dyeing

• Textile surface design

• Cellulose fibres such as cotton, linen, hemp and rayon

• Studio dye preparation and pH adjustment

Handling

This is a strong alkaline material and should be handled with appropriate care.

• Avoid inhaling dust

• Use gloves and protective equipment where appropriate

• Store in a dry, sealed container

• Keep out of reach of children

Alternative Names

• Potassium Carbonate

• Potash

• Pearl Ash (historical name)