DEOXIDIZING AGENT FOR BOILERS AND METHOD FOR DEOXIDIZING BOILER WATER SYSTEM

摘要

DEOXIDIZING AGENT FOR BOILERS AND METHOD FOR DEOXIDIZING BOILER WATER SYSTEM The present invention provides a deoxidizing agent for boilers excellent in an oxygen removal effect under wide temperature conditions. The deoxidizing agent for boilers comprises (A) a hydroxylamine compound represented by the following general formula (I), (B) a heterocyclic compound having an N-substituted amino group, and (C) an aminophenol derivative represented by the following general formula (II), wherein R 1 and R 2 each independently represent an alkyl group having 1 to 5 carbon atoms; wherein R 3 to R 6 each independently represent any one of (a) the following general formula (III), (b) −OR 10 and (c) −R11 , at least one of R 3 to R 6 representing (a), and - 31 - R10 and R 11 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; wherein R 7 represents a single bond or an alkylene group having 1 to 4 carbon atoms, and R 8 and R 9 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms. [No Available Figure]