Linear Formula: KOH, Molecular Weight: 56.11, reagent grade, 90%, flakes, Synonym: Caustic potash. Potassium hydroxide (KOH) was used in the following processes: Quantification of glutathione (GSH) and glutathione disulfide (GSSG) in biological samples by HPLC. Preparation of buffer for use in the Investigation of seed fatty acid (FA) composition, protein, oil and sugar content.