<unk> -based<unk>  are usually handled in water solutions, powders, or tablets, that are mixed with water before use. They may have to be rinsed off after application to avoid corrosion of metals and degradation of organic materials. Disinfectants<unk> -based<unk>  are effective against a wide variety of microorganisms including bacterial spores. They are listed by the World Health Organization as essential medicines in any health system. The presence of other organic matter in the place of application can make these disinfectants less effective, by consuming some of the released<unk> . Whitening agents<unk> -based bleaches have been used since the late 18th century to whiten cotton and linen clothes, removing either the natural fiber color or stains of sweat or other organic residues. They are still used in households for laundry and to remove organic stains (such as mildew) on surfaces. Colors of natural materials typically arise from organic pigments, such as beta carotene.<unk> -based<unk>  work by breaking the chemical bonds that make up the pigment's chromophore. This changes the molecule into a different substance that either does not contain a chromophore, or contains a chromophore that does not absorb visible light. Industrially,<unk> -based bleaches are used in a wide variety of processes, including bleaching of wood pulp.
Chlorine-releasing compounds
Monoamine releasing agent
Glucose-elevating agent
Norepinephrine–dopamine releasing agent
Mucoactive agent
Chaotropic agent
Serotonin–norepinephrine–dopamine releasing agent
Cholinergic blocking drugs