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Why is formaldehyde used as a disinfectant and soil sterilant?

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Formaldehyde is used as a disinfectant and soil sterilant primarily due to its high reactivity with proteins. This chemical interaction allows it to effectively neutralize microorganisms, which also makes it useful as an embalming agent and a fungicide.12

It is important to note that while formaldehyde is effective for these purposes, it is a hazardous substance. It is classified as a human carcinogen and is known to be extremely irritating to mucous membranes. Ethical safety standards necessitate careful handling and limited exposure to protect human health and the environment from its toxic effects.1