Cas 79-03-8 Hs code 2915900090 Package 250kg/drum 20ton/20feet container 25ton/40feet container Physical and chemical properties: Propionyl chloride is an acyl chloride of propionic acid and can undergo reactions that occur with acyl chloride. It is a colorless, corrosive and volatile liquid. Chemical properties Colorless liquid with pungent odor. Soluble in ethanol.