This polyol, also known as levo-2,3-Butanediol, presents as a dark yellow liquid. It is known to be soluble in water. Store in a tightly closed container in a dark and well-ventilated place. Substance is air sensitive and should be kept under inert gas at -20° C. (2R,3R)-(-)-2,3-Butanediol is incompatible with strong oxidizing agents and is known to be combustible.