Monday, February 13, 2023

Alpha-Isomethyl Ionone: A Great Smelling Chemical

  


     Have you ever thought to yourself, why does my cologne or perfume smell so good? Well the list of ingredients in one fragrance can be quite extensive, however, alpha-isomethyl ionone could be one reason as to why your fragrance smells great. Alpha-isomethyl ionone is a chemical that is put into fragrances, this chemical has a floral, violet scent2 that contributes to many fragrances' sweet, fresh scents. Alpha-isomethyl ionone is a naturally occurring organic compound found in brewer's yeast1 but the chemical is synthetically made in a lab for use in fragrances. 


Red, bumpy, or itchy skin are some possible side effects of exposure to alpha-isomethyl ionone although only a small percentage of people encounter these side effects.2 The chemical is also known to be toxic to aquatic life with long lasting effects. It is also listed as a substance that can cause allergies in certain people.3


There are no direct alternatives to alpha-isomethyl ionone as the scent is quite unique, however, other synthetic fragrant chemicals can be used such as linalool that has a floral/spice scent, camphor which has a woody aroma scent or limonene that has a citrus fruit scent. Since alpha-isomethyl ionone does not pose any serious health or environmental issues, there are not any controversies surrounding it. 


Exam Questions:

  1. What are the properties of alpha-isomethyl ionone that make the chemical desirable?

  2. What are some of the possible side effects of applying alpha-isomethyl ionone on the skin?

  3. What are some possible alternatives to alpha-isomethyl ionone that are used in fragrances?

References

1 alpha-isomethyl-ionone (YMDB01634). Yeast metabolome database. (n.d.). Retrieved January 27, 2023, from http://www.ymdb.ca/compounds/YMDB01634 

2 Alpha-isomethyl-ionone. The Fragrance Conservatory. (n.d.). Retrieved January 27, 2023, from https://fragranceconservatory.com/ingredient/alpha-iso-methyl-ionone#:~:text=About%20its%20safety&text=It%20has%20been%20identified%20by,bumpy%2C%20or%20itchy%20skin). 

3 Alpha-isomethyl ionone. Curious Chloride. (n.d.) Retrieved January 27, 2023, from https://www.curiouschloride.com/substances/alpha-isomethyl-ionone/ 

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