Oman Chemical is a world-famous manufacturer, supplier, and exporter of Tank cleaning chemicals. Our RXSOL-19-1016-025 Potassium Hydroxide Mixture is an odorless, white or slightly yellow, flakey or lumpy solid which is often in a water solution. It is used in making soap, as an electrolyte in alkaline batteries and in electroplating, lithography, and paint and varnish removers.