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2116493 
Journal Article 
Method of Inhibiting Boiler Corrosion and Compositions for It 
Zupanovich, JD; Sepelak, DJ; Neil, LJ; Sinha, RK 
1987 
3 
13 (Mar. 1987) 
25-26 
A method of inhibiting corrosion in boilers and boiler feedwater systems comprises adding to boiler feedwater containing dissolved oxygen an additive that is at least one trihydroxybenzene compound, hexahydroxybenzene, levodopa, and/or a salt, homologue or analogue of levedopa. There may also be added, as second corrosion inhibitor, one or more of hydroquinone, methoxypropylamine, cyclohexylamine, diethylethanolamine, morpholine, diethyl hydroxylamine, dimethyl amino-2- propanol, carbohydrazide, 2-amino-2-methyl propanol, erythorbic acid, and salts of erythorbic acid. Compositions comprising the additive and such a second corrosion inhibitor are novel. 
Feedwater; Corrosion; Corrosion prevention; Boilers; Inhibitors; Environment; Ferrous alloys