Onion cells contain some chemical compounds like sulfur. Cut the onion its cells are broken and the chemical compounds are released into the air. So that more volatile sulfured products are formed. Sulfured compounds react with the moisture in eyes forming sulfuric acid. Which produce a burning sensation. So that the tears comes out.
How To Avoid ?
How To Avoid ?
- Chop the onion under cold water. The volatile sulfured compounds will be released but then they react with the water, instead of reaching your eyes.
- You can freeze the onion for 10 minutes before cutting it. The cold temperature of the onion will slow down the chemical reaction which forms the volatile sulfured compounds.
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