This chemical compound, also known as (S)-3,7-Dimethyl-6-octenal, presents as a colorless to pale yellow, herbal-citrus smelling liquid. It is soluble in alcohol and insoluble in water. Store in a well-ventilated place at refrigerated temperatures. (-)-Citronellal is flammable as well as irritating to eyes, respiratory system, and skin. Keep away from heat/sparks/open flames/hot surfaces. No smoking during exposure or handling.