Iodine tincture can't be kept for a long time

Iodine tincture can't be kept for a long time
Iodine tincture is also called iodine tincture, it is disinfectant for external use always on the alert of a lot of families. The content of iodine in iodine tincture is 2%- 2. 5%, the wine of iodination includes the iodine 1. 5% and 50% rare ethanol solution, have stronger function of killing bacterium and mould, and can kill bud the afterbirth. If iodine tincture stand time too long, iodine and among them the intersection of water and function, produce the intersection of iodine and amino acid and times of sour iodine, the latter can further oxidize ethanol, it is sour to produce acetic aldehyde, second, because the content of the free iodine is reduced at this moment, sterilization strength drops, the stimulating product increases, the irritation to the skin is strengthened, so the length of time of iodine tincture should not be too long, so as not to reduce the disinfective action.


The normal appearance properties of iodine tincture should be the umber clear and bright liquid, there is special smell of iodine and ethanol, if iodine tincture is not available for medicine when volatilizes and not yet umber seriously. In order to prevent the light to the catalysis of the above-mentioned chemical reaction, iodine tincture should be put in the brown vial, keep in the airtight, dark place, can't use the rubber, cork or metal bottle plug, because can the chemical reaction take place with iodine tincture in these materials, make the sterilization function of iodine tincture weaken.


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