Which disinfectant contains formaldehyde and poses a danger to the eyes and skin?

Phenolic disinfectants are known to contain formaldehyde, which can indeed pose risks to both the eyes and skin. These disinfectants are derived from coal tar and can be very effective in killing bacteria and viruses; however, they also introduce risks due to their strong chemical nature. Formaldehyde is classified as a potential carcinogen and can cause irritation, allergic reactions, and more severe damage with prolonged exposure.

Because of these properties, safety precautions must be taken when working with phenolic disinfectants, including using appropriate personal protective equipment such as gloves and goggles to minimize the risk of contact with skin and eyes.

The other substances listed, while they have their own risks and uses, do not contain formaldehyde and are not associated with the same level of danger to eyes and skin as phenolic disinfectants. Sodium hypochlorite is a bleach that can cause irritation but is chemically distinct. Isopropyl alcohol and hydrogen peroxide are commonly used antiseptics and disinfectants but are not classified in the same way when it comes to formaldehyde content or the associated dangers.