<unk> s are used ubiquitously: For example, fluorosurfactants are widely used in the production of teflon (PTFE) and related fluorinated polymers. They confer hydrophobicity and stain-resistance to fabrics. They are components of fire-fighting foam. Fluorosurfactants (PFAS) reduce surface tension by concentrating at the liquid-air interface due to the lipophobicity of polyfluorocarbons. Chlorofluorocarbons are<unk> s that were formerly used as refrigerants (Freon) until they were implicated in ozone degradation.
Perfluorinated compound
Azo compound
Polychlorinated naphthalene
Organochlorine compound
Generic drug
Inhalant
Organobromine compound
Corrosive substance