Infectious Disease Management and Control with
A solution containing 50 ppm iodine kills bacteria in 1 min and spores in 15 min. It is poorly soluble in water but readily dissolves in ethanol, which enhances its antibacterial activity. Iodine tincture contains 2% iodine and 2.4% sodium iodide (NaI) dissolved in 50% ethanol; it is used as a skin disinfectant.
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