Icaridin, also known as picaridin, is an insect repellent which can be used directly on skin or clothing. It has broad efficacy against various arthropods such as mosquitos, ticks, gnats, flies and fleas, and is almost colorless and odorless. A study performed in 2010 showed that picaridin spray and cream at the 20% concentration provided 12 hours of protection against ticks. Unlike DEET, icaridin does not dissolve plastics, synthetics or sealants, is odorless and non-greasy and presents a lower risk of toxicity when used with sunscreen, as it may reduce skin absorption of both compounds.

Icaridin

Names
Preferred IUPAC name Butan-2-yl 2-(2-hydroxyethyl)piperidine-1-carboxylate
Other names KBR 3023 Hydroxyethyl isobutyl piperidine carboxylate sec-Butyl 2-(2-hydroxyethyl)piperidine-1-carboxylate
Identifiers
CAS Number	119515-38-7 Y
3D model (JSmol)	Interactive image
ChEMBL	ChEMBL2104314 N
ChemSpider	111359 Y
ECHA InfoCard	100.102.177
PubChem CID	125098
UNII	N51GQX0837 Y
CompTox Dashboard (EPA)	DTXSID0034227
InChI InChI=1S/C12H23NO3/c1-3-10(2)16-12(15)13-8-5-4-6-11(13)7-9-14/h10-11,14H,3-9H2,1-2H3 Y Key: QLHULAHOXSSASE-UHFFFAOYSA-N Y InChI=1/C12H23NO3/c1-3-10(2)16-12(15)13-8-5-4-6-11(13)7-9-14/h10-11,14H,3-9H2,1-2H3 Key: QLHULAHOXSSASE-UHFFFAOYAQ
SMILES O=C(OC(C)CC)N1C(CCO)CCCC1
Properties
Chemical formula	C12H23NO3
Molar mass	229.320 g·mol−1
Appearance	colorless liquid
Odor	odorless
Density	1.07 g/cm3
Melting point	−170 °C (−274 °F; 103 K)
Boiling point	296 °C (565 °F; 569 K)
Solubility in water	0.82 g/100 mL
Solubility	752 g/100mL (acetone)
Refractive index (nD)	1.4717
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

The name picaridin was proposed as an International Nonproprietary Name (INN) to the World Health Organization (WHO), but the official name that has been approved by the WHO is icaridin. The chemical is part of the piperidine family, along with many pharmaceuticals and alkaloids such as piperine, which gives black pepper its spicy taste.

Trade names include Bayrepel and Saltidin among others. The compound was developed by the German chemical company Bayer in the 1980s and was given the name Bayrepel. In 2005, Lanxess AG and its subsidiary Saltigo GmbH were spun off from Bayer and the product was renamed Saltidin in 2008.

Having been sold in Europe (where it is the best-selling insect repellent) since 1998, on 23 July 2020, icaridin was approved again by the EU Commission for use in repellent products. The approval entered into force on 1 February 2022 and is valid for ten years.