Potassium Bicarbonate is a colourless, odourless, slightly basic, salty substance. Physically, potassium bicarbonate occurs as a crystal or a soft white granular powder. This compound is a source of carbon dioxide for leavening in baking, extinguishing fire in dry chemical fire extinguishers, acting as a reagent, and a strong buffering agent in medications. It is used as an additive in winemaking and as a base in foods and to regulate pH.

It is also used as an antacid, in swimming pools and in water treatment.