According to relevant data, the molecular formula of cinnamaldehyde is C9H8O, the structural formula is C6H5CHCHCHO, and the molecular weight is 132. 159. This molecule has a special cinnamon smell, which can be volatilized with water vapor. It is easily oxidized to cinnamic acid in air.

Cinnamaldehyde is the main component of domestic cinnamon oil and Ceylon cinnamon oil, and its content is about 55%~85%. The double bonds in natural products and synthetic products are trans-structured, with yellow liquid appearance and cinnamon flavor. Storage conditions are sealed in a cool place, so that the container is kept airtight and stored in a dry and ventilated place. Avoid contact with skin and eyes during operation, and avoid inhaling steam and smoke.