abstract |
(57) [Problem] To provide a highly safe oxygen absorber capable of efficiently removing dissolved oxygen in water, particularly in boiler feedwater. SOLUTION: This oxygen absorber is 1,3-dimethyl-5. A heterocyclic compound such as pyrazolone, N-aminomorpholine, 2,3-diaminopyridine, 5-aminouracil, or azodicarbonamide as an active ingredient. |