This reagent, also known as NOA, presents as a light grey crystalline solid. It is known to be soluble in cold water. Store in a tightly closed container in a cool and well-ventilated place. (2-Naphthoxy)acetic Acid is incompatible with oxidizing agents. This substance is hazardous in case of skin contact, causes eye irritation, hazardous if ingested, and causes respiratory irritation.