Thermogravimetry and differential thermal analysis have been applied to the determination of the stability of chlorides, nitrates and bisulfates of some long-chain (at least eight carbon atoms per chain) primary, secondary and tertiary normal aliphatic amines. All compounds investigated are thermally stable at least up to their melting point. The decomposition is exothermal in all cases, and the weight-loss corresponds to a total vaporization of the salts. Some of the salts are sufficiently stable for use as metal extractants from molten salt media.