Also known as ammonium chloride, ammonium hydroxide, benzalkonium chloride, and quaternary ammonium compounds.

An irritant that affects the skin, eyes, and respiratory passages. Extremely toxic when inhaled in concentrated vapors. Repeated exposure may lead to bronchitis and pneumonia. Can cause chemical burns, cataracts, and corneal damage. Has been shown to produce skin cancer. Toxic effects to plants, animals, and fish. Listed as a toxic chemical on the EPA's Community Right-to-Know list. Found in a wide range of household cleaning products, including glass cleaners, all-purpose cleaners, and disinfectants.