This alcohol, also known as (R)-(−)-Propylene glycol, presents as a colorless to yellow liquid. It is known to be miscible with acetone, chloroform, ethanol (95%), glycerin, and water and is soluble at 1 in 6 parts of ether. This chemical will dissolve in some essential oils but is not miscible with light mineral oil or fixed oils. Keep container tightly closed and store in a cool and dark place under inert gas and at ambient temperatures. This substance is hygroscopic, air sensitive and moisture sensitive. (R)-(-)-1,2-Propanediol is incompatible with oxidizing agents. This chemical is combustible and causes serious eye irritation.