| Ethoxyquin[1] | |
|---|---|
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6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline |
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| Identifiers | |
| CAS number | 91-53-2 |
| PubChem | 3293 |
| ChemSpider | 3177 |
| UNII | 9T1410R4OR |
| ChEMBL | CHEMBL172064 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | C14H19NO |
| Molar mass | 217.31 g mol−1 |
| Melting point |
< 25 °C |
| Boiling point |
123–125 °C at 2 mmHg |
| (verify) (what is: /?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
Ethoxyquin is a quinoline-based antioxidant used as a food preservative (E324) and a pesticide (under commercial names such as "Stop-Scald"). It is commonly used as a preservative in pet foods to prevent the rancidification of fats. Ethoxyquin is also commonly used in spices to prevent color loss due to oxidation of the natural carotenoid pigments.
There has been some speculation that ethoxyquin in pet foods might be responsible for multiple health problems. To date, the U.S. Food and Drug Administration (FDA) has only found a verifiable connection between ethoxyquin and buildup of protoporphyrin IX in the liver, as well as elevations in liver-related enzymes in some animals, but there are no known health consequences from these effects.[2] In 1997, the Center for Veterinary Medicine has asked pet food manufacturers to voluntarily limit ethoxyquin levels to 75 ppm until further evidence is reported.[2] However, most pet foods that contain ethoxyquin have never exceeded this amount.[2]
Ethoxyquin has been shown to be slightly toxic to fish.[3]