| abstract |
The cleaning agent composition for a steel sheet according to the present invention contains 0.1-6.0 mass% of an alkali agent (component A), 0.01-2.0 mass% of a chelating agent (component B), 0.01-2.0 mass% of a surfactant (component C), 0.02-5.0 mass% of a compound (component D) represented by general formula (I), and water (component E) (in general formula (I), R 1 represents a hydrogen atom or an alkyl group having 2-6 carbon atoms, R 2 represents a hydrogen atom, a hydroxyethyl group, a hydroxypropyl group, an aminoethyl group, or an alkyl group having 1-6 carbon atoms, and R 3 represents a hydroxyethyl group or a hydroxypropyl group). The present invention can prevent oxidation on the surface of a steel sheet while maintaining good cleanability at a low temperature. |