OctanalAn organic compound with the chemical formula C5H8O2, it is a colorless or pale yellow transparent liquid with a formaldehyde-like刺激性 odor. Its relative density is 1.106, melting point -14°C, boiling point 188°C (decomposes), refractive index 1.4338 (25°C), and it is sparingly soluble in cold water but easily soluble in hot water and ethanol.Ethyl etherWait for organic solvents. Possesses typical chemical properties of aldehydes, which can be generated through addition and condensation reactions.MethanalCyanohydrins, oximes, azomethines, etc.