30 July 2021 Bulletin

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Isophorone is a α,β-unsaturated cyclic ketone with the molecular formula C9H14O. It is a colourless to yellowish liquid with a characteristic peppermint-like smell. [1] Isophorone evaporates faster than water but slower than charcoal starter or paint thinner, and it will not mix completely with water. It is a manmade chemical for use commercially, but it has been found to occur naturally in cranberries. Isophorone does not remain in the air very long, but can remain in water for possibly more than 20 days. The length of time that isophorone will remain in soil is not known, but it probably is about the same as the length of time it remains in water. [2]

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