Methyl iodide

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Methyl iodide is a chemical compound. It is made of methyl and iodide ions. Its chemical formula is CH3I.

Properties[change | edit source]

It is a liquid that evaporates easily. When it is exposed to light, it turns purple because of iodine. This can be stopped by keeping it with copper. It breaks down when heated to make carbon dioxide, carbon monoxide, and hydrogen iodide.

Preparation[change | edit source]

It is made by reacting iodine, red phosphorus, and methanol all at the same time. Phosphorus(III) iodide is formed during the reaction. Another way to make it is to react methanol with potassium iodide and some sulfuric acid.

Uses[change | edit source]

It is used to add methyl to some organic compounds. It can also be used as a pesticide. It is used to make dimethylmercury and other chemicals.

Safety[change | edit source]

It causes nausea and dizziness when breathed. It can cause burns when put on skin.

Related pages[change | edit source]