Question Video: Identifying Where Methyl Bromide Gas Is Commonly Found | Nagwa Question Video: Identifying Where Methyl Bromide Gas Is Commonly Found | Nagwa

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Methyl bromide is a gaseous chemical that contributes to ozone depletion. Where is methyl bromide commonly found?

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Video Transcript

Methyl bromide is a gaseous chemical that contributes to ozone depletion. Where is methyl bromide commonly found? (A) In fertilizers, (B) in industrial catalysts, (C) in insecticides, (D) in car exhaust fumes, (E) in fire extinguishers.

Methyl bromide is a small molecule that contains one carbon atom bonded to three hydrogen atoms and a bromine atom. Because it is a small molecule, it has a very low boiling point. So, methyl bromide exists as a gas at room temperature. Methyl bromide can be stored in containers under pressure. It is a very toxic substance.

Since methyl bromide is so toxic and it disperses very easily, it is used to fumigate agricultural storage areas to eliminate pests. The gas is colorless and odorless. And when it disperses, it will not contaminate the stored crops. The gas will kill insects and rodents. The use of methyl bromide in agricultural fumigation is now very limited as methyl bromide is known to react with ozone in the stratosphere.

Although some methyl bromide is released naturally from the seas and oceans, most of the manufactured methyl bromide is found in insecticides. So, to answer the question “Where is methyl bromide commonly found?,” “in insecticides” is the correct answer.

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