Meisterprüfung Denkmal-, Fassaden- Und Gebäudereinigung Practice Questions - Meisterprüfung Denkmal-, Fassaden- Und Gebäudereinigung (Austria) Exam

They act as cationic surfactants in acidic media (pH < isoelectric point) and as anionic surfactants in alkaline media (pH > isoelectric point). They maintain a permanent negative electrical charge regardless of whether the medium is strongly acidic or strongly alkaline. They lose their hydrophilic group entirely in alkaline conditions and become insoluble mineral waxes. They function as active oxidizers in neutral water and as reducing acids in alkaline water.