2.The best way to get stains off collars is to use liquid detergent at full strength.
去除领子上的污点最好的办法是使用未稀释的体洁。
3.A detergent for cleaning iron monosulfide was formulated with surfactant, diamino-propadiene, citric and EDTA, and its cleaning mechanism was discussed.
4.3, A chelating agent which forms an easily water-soluble metal chelated compound such as nitrilotriacetate (NTA) or ethylene diamine tetraacetate (EDTA) is incorporated in a detergent composition.