Disinfectants containing heavy metal compounds have been replaced as disinfectants,except for _____,which is still used as a prophylactic treatment in newborns to prevent gonococcal conjunctivitis.

Question

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Mercuric chloride is a preservative used in parasitology.Copper sulfate is used to estimate the amount of hemoglobin in a drop of blood.Ammonium nitrate is used as a component of gunpowder.Silver nitrate is indeed used to swab the eyes of newborns to protect them from gonococcal conjunctivitis.

Disinfectants Containing Heavy Metal Compounds Have Been Replaced as Disinfectants,except