21. Soaps and surfactants can facilitate the death of fleas in bathing. 22. Perfluoroalkyl iodides are precursors to important surfactants , such as perfluorooctanesulfonic acid. 23. Alternatively, the polymerization is conducted using a surfactant such as PFOS. 24. A non-ionic surfactant has no charged groups in its head. 25. It is coupled to hydrophobic molecules to produce non-ionic surfactants . 26. Research has pursued additive surfactants to improve the efficacy of CO 2. 27. Another non-biodegradable compound in common use is surfactant . 28. The MBAS assay cannot distinguish between specific surfactants , however. 29. Another important ingredient in some formulations is the surfactant polyethoxylated tallow amine. 30. A chemical surfactant surrounds the particle during formation and regulates its growth.
