Quaternary Ammonium Compounds (Quats)

Irritants and sensitizers that can induce an allergic response following contact with the skin. Quats are also known to cause occupational asthma in cleaning workers and preliminary evidence indicates they may cause adverse genetic and reproductive effects. Chemicals in this class are persistent in the environment and toxic to aquatic organisms. Like triclosan, quats are anti-microbial agents and there is concern that their widespread use in household disinfectants and cosmetics is contributing to antibiotic resistant bacteria, thus limiting treatment options for microbial infections. The Canadian Medical Association has called for a ban on antibacterial consumer products.

Found in: bathroom cleaning products, all-purpose cleaners, fabric softeners, and degreasers.