| 摘要 |
PROBLEM TO BE SOLVED: To provide an environmentally friendly detergent that is capable of safely cleaning an inner wall or a hard surface of a drinking water reservoir etc., on which iron rust, manganese, fur and scale are deposited, at a low cost within a short time and enables easy waste water treatment, and a washing method.SOLUTION: An aqueous liquid detergent composition is obtained by dissolving a mixture containing oxalic acid and sodium chloride in water. The aqueous liquid detergent composition contains undissolved components of oxalic acid or a sodium salt of oxalic acid at normal temperature. |
