Direct skin contact with methylene chloride causes intense burning and mild redness. Eye contact can burn the cornea. These effects highlight the importance of handling this compound with caution due to its potential harm to human health.

Exposure to methylene chloride in air can lead to impaired hearing and vision at lower levels, while higher levels can cause dizziness, nausea, and tingling in fingers and toes. Methylene chloride harms the human central nervous system.

Carbon compounds with more than one halogen atom are termed polyhalogen compounds. Dichloromethane finds applications as a solvent, paint remover, propellant in aerosols, and in drug manufacturing as well as metal cleaning and finishing.

The halogen atom’s –I effect and deactivating influence, along with resonance, make the benzene ring in haloarenes somewhat deactivated compared to benzene. As a result, electrophilic substitution reactions in haloarenes occur more slowly and require more drastic conditions than those ...

The halogen atom in haloarenes, being o, p-directing, directs further substitution to the ortho- and para-positions with respect to itself due to resonance, resulting in increased electron density at these positions.