
Picaridin, also known as Icaridin or hydroxypiperidyl ester, has the chemical name 2-(2-hydroxyethyl)piperidine-1-carboxylic acid sec-butyl ester, with the molecular formula C₁₂H₂₃NO₃ and a molecular weight of 229.32. It is a colorless, transparent, viscous liquid that is odorless or nearly odorless. It is gentle on the skin, non-irritating, and leaves a refreshing, non-greasy feel. Its mosquito-repellent mechanism involves forming a barrier on the skin’s surface that interferes with the olfactory senses of mosquitoes and ticks, preventing them from locating human skin.
| Item | Specification |
| Melting Point | <-170°C |
| Boiling Point | 280°C |
| Density | 1.07 g/cm³ (d20) |
| Flash Point | 142°C |
| Vapor Pressure | N/A |
| Refractive Index | nD20 1.4717 |
| Solubility | Easily soluble in organic solvents such as ethanol, propylene glycol, and butylene glycol; slightly soluble in water (approximately 5%). |
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