Muriate of potash, also known as potassium chloride contains 60% potash. Potash is essential for plant growth and quality. It plays a vital role in the production of proteins and sugars. It also protects against draught by maintaining plants water content which in turn is a benefit for photosynthesis as leaves maintain their shape and vigor. Contains 60% Potash Chemical name : Potassium chloride. Particle size and colour : Nominal 2-4 mm particle sizing, pink in colour. Blending : Blends with most other products.