... .White flakes 3.We'r manufacturer 1. PRODUCT DESCRIPTION: MEMBRANE POTASSIUM HYDROXIDE 90% ,White flakes, HG/T 3688-2010, Molecular ... of sodium metal, inorganic salt , chromate, manganese, borax acid salt, phosphate, etc, are also using a lot of Potassium hydroxide. 4. ... Storage Potassium hydroxide should be stored in the dry and cooling ...