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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

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

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

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

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

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