should be from more than zero weight percent up to saturated however the preferred range is from about 15 to about 70 weight percent and the most preferred range is from about 20 to about 30 weight percent upon the addition of this caustic to the amine or ammonia there is generated a two phase system wherein the top storage layer of the system is primarily the amine or the ammonia solution and the bottom reaction layer of the system is primarily the aqueous caustic solution with some of the amine or ammonia dissolved in it in that the amine is partially soluble in the caustic the lower reaction layer of the two phase system rapidly reaches an equilibrium saturation once the equilibrium saturation is reached the reaction media is ready for use chloramine is now introduced into the lower reaction layer of the two phase system the chloramine can either be in gaseous form or it can be dissolved in an aromatic hydrocarbon solvent such as xylene or toluene or in an aliphatic hydrocarbon such as pentane heptane or hexane or in ethers such as diethyl ether upon introduction the chloramine reacts with the available amine or the available ammonia in the lower reaction zone because of its relative insolubility and the fact that the forming hydrazine is less dense than the caustic layer the forming hydrazine rapidly rises to the top of the lower reaction layer of the two phase system there because of its.