DEET

N,N-Diethyl-meta-toluamide is an insect repellent. It is also called diethyltoluamide or DEET . Deet is an acronym (/diːt/, from DET, the initials of di- + ethyl + toluamide).[1][2] It was developed in the 1940s. Because it is very effective it is still widely used It is a colorless to slightly yellow[3] oil[4] intended to be applied to the skin or to clothing. It protects against mosquitoes, biting flies, ticks, fleas, chiggers, and leeches.[5]

The substance has a number of side effects. In general,small children and pregnant women should not use it.

Usually it is used as an ingredient of insect repellents.

References

  1. ↑ "DEET". Merriam-Webster. Retrieved 2023-06-04.
  2. ↑ Plumlee, Konnie H. (2004-01-01), Plumlee, Konnie H. (ed.), "Chapter 21 - Insecticides and Molluscicides", Clinical Veterinary Toxicology, Saint Louis: Mosby, pp. 177–192, doi:10.1016/b0-32-301125-x/50024-8, ISBN 978-0-323-01125-9
  3. ↑ "Chemical Summary for N,N-Diethyl-meta-toluamide (DEET)" (PDF). National Toxicology Program, U.S. Department of Health and Human Services. October 1999. Retrieved 2025-07-27."Chemical Summary for N,N-Diethyl-meta-toluamide (DEET)" (PDF). National Toxicology Program, U.S. Department of Health and Human Services. October 1999. Retrieved 2025-07-27.
  4. ↑ "Deet". CAMEO Chemicals. Museum of Fine Arts, Boston. Retrieved 2025-07-27."Deet". CAMEO Chemicals. Museum of Fine Arts, Boston. Retrieved 2025-07-27.
  5. ↑ Tawatsin A, Thavara U, Chansang U, Chavalittumrong P, Boonruad T, Wongsinkongman P, Bansidhi J, and Mulla MS (2006). "Field evaluation of deet, Repel Care, and three plant based essential oil repellents against mosquitoes, black flies (Diptera: Simuliidae) and land leeches (Arhynchobdellida: Haemadipsidae) in Thailand". J Am Mosq Control Assoc 22, 306–313
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