Decanal is an organic compound classified as an aldehyde with the chemical formula C10H20O. Occurrence Decanal occurs naturally in citrus, along with octanal, citral, and sinensal, in buckwheat, and in coriander essential oil. It is used in fragrances and flavoring. Preparation Decanal can be prepared by oxidation of the related alcohol decanol. Safety For safety information see the MSDS. References Fatty aldehydes Sweet-smelling chemicals Alkanals