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CAS 74-95-3

Methylene bromide (Dibromomethane)

VOCPesticides

Methylene bromide is a colorless, sweet-smelling liquid used as a solvent and to make other chemicals. It’s toxic at high levels and can affect the nervous system and internal organs, so limiting exposure matters. [1][3]

Where It Comes From

Made and used in chemical manufacturing and labs; can evaporate to air during use and leak at industrial or waste sites. [1]

How You Are Exposed

Breathing indoor or outdoor air near use or spills; drinking contaminated well or tap water; skin contact at work. [1]

Why It Matters

Short-term exposure can irritate eyes, skin, and lungs and cause headache, dizziness, or nausea; very high levels can cause unconsciousness. Repeated exposure harmed liver and kidneys in animal studies. Animal cancer findings exist; human evidence is inadequate, and IARC deems it not classifiable for humans. [1][2][3]

Who Is at Risk

Chemical and lab workers; people using it in poorly ventilated spaces; residents near industrial sites or contaminated wells. [1]

How to Lower Your Exposure

Use ventilation and protective gear at work; store and handle solvents carefully; check local water reports and consider activated carbon filtration certified for VOCs; avoid using solvents in closed spaces. [1]

References

  1. [1]U.S. EPA IRIS. Dibromomethane (CASRN 74-95-3).
  2. [2]IARC Monographs on the Evaluation of Carcinogenic Risks to Humans. Dibromomethane.
  3. [3]NTP. Toxicology and Carcinogenesis Studies of Dibromomethane (CAS 74-95-3) in Rats and Mice.

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