Potassium formate is an organic salt with the chemical formula HCOOK. It appears as a white solid, highly hygroscopic, and possesses reducing properties, enabling it to react with strong oxidizing agents. Its density is 1.9100 g/cm3, it is highly soluble in water, and it is non-toxic and non-corrosive. Its aqueous solution is a colorless, transparent liquid, with a specific gravity of 1.58 g/cm3 for the saturated solution.