| abstract |
A method for inhibiting corrosion due to dissolved oxygen comprises adding chelant-stabilized sodium erythorbate, alone or in combination with conventional corrosion in- hibitors, to boiler water to prevent corrosion by reducing dissolved oxygen levels in boiler feedwater. Novel compositions contain sodium erythorbate and, as chelant, nitrilotriacetic acid, ethylenediamine tetraacetic acid, N-hydroxyethyl) ethylenediamine triacetic acid or citric acid, or a salt of such an acid. |