Dimethylformamide (DMF) is a colorless, transparent liquid that is soluble in water and most organic solvents. Pure dimethylformamide has a special odor, industrial grade or spoiled dimethylformamide has a fishy odor, because it contains dimethylamine impurity. The name comes from the fact that it is a dimethyl substitute for formamide (the amide of formic acid), and both methyl groups are located on the N (nitrogen) atom. It is a common solvent for chemical reactions. As the polarity of high boiling point (hydrophilic) aprotic solvents, it can promote the SN ₂ reaction mechanism. Dimethylformamide is made from methyl formate and dimethylamine. Dimethylformamide in strong base such as sodium hydroxide or strong acid such as hydrochloric acid or sulfuric acid is not stable in the environment (especially in high temperature), and hydrolysis of formic acid and dimethyl amine, the equations for HCON (CH ₃) ₂ + H ₂ O - (CH) ₃ ₂ NH + HCOOH.