Iodine tincture can be deiodinated with alcohol, usually with 70% alcohol. It should be noted that after the tincture is wiped, it is necessary to wait 1 minute to deiodify with alcohol, and the disinfection effect is better. But when removing iodine, you should wipe the tincture thoroughly with alcohol, otherwise you will miss the place that is easy to burn your skin.

When the skin is disinfected with iodine, it should be removed with alcohol after drying, otherwise iodine will burn the skin; Iodine tincture can penetrate into the skin and kill bacteria (2%~3% iodine is used for skin disinfection. 1% iodine for oral mucosa disinfection). But it can't be used with mercuric chloride, which will produce toxic mercuric iodide.

Extended data:

Reasons why iodine tincture needs to be deiodized:

Because iodine has strong irritation to tissues such as skin mucosa, too high concentration can cause skin blistering, peeling and dermatitis. Therefore, when the skin is disinfected with iodine, it is necessary to wait until the skin is slightly dry, and then use 70% alcohol to remove iodine. Because it is irritating, if it is applied to the wound, it can produce a strong burning sensation, so iodine cannot be used for disinfection of damaged skin and mucous membranes such as eyes, mouth and perineum.

Iodine tincture has an active gene that oxidizes and destroys the protoplasm protein of pathogen, and binds to the amino group of protein to denature and precipitate it, so it has a powerful bactericidal effect.

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