are in the range of from 0 001 ppm to 500 ppm as hydroxylamine preferably from 0 01 to 50 ppm and most preferably from 0 02 to 25 ppm the ratios of n n dihydrocarbylhydroxylamine to n hydrocarbylhydroxylamine can vary widely depending on the nature of the system being treated and the relative concentration of dissolved oxygen in the high temperature and low temperature areas of the boiler steam condensate system in general the ratio is from 1 50 to 50 1 preferably 1 10 to 10 1 and most preferably 1 1 n n dihydrocarbylhydroxylamine n hydrocarbylhydroxylamine on a weight basis the corrosion inhibiting compositions of this invention may be used in combination with other boiler treatment agents including other corrosion inhibitors or oxygen scavengers such as neutralizing amines hydrazine sodium sulfite as well as other known dispersants chelants scale inhibitors and the like and mixtures thereof a particularly preferred embodiment comprises the combination of a neutralizing amine with the n n dihydrocarbylhydroxylamines and n hydrocarbylhydroxylamines the ratio of neutralizing amine to n n dihydrocarbylhydroxylamines is generally in the range of from 1 10 to 100 1 on a weight basis without further elaboration it is believed that one of ordinary skill in the art using the preceding detailed description can utilize the present invention to its fullest extent the following examples are provided to illustrate the invention in accordance with the principles of this invention but are not to be construed as limiting the invention in any way except as indicated.