Undecenoic acid(CAS#112-38-9)
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R36/38 - Irritating to eyes and skin. R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | UN 3261 8/PG 2 |
| WGK Germany | 1 |
| RTECS | YQ2975000 |
| TSCA | Yes |
| HS Code | 29161910 |
| Toxicity | LD50 in mice (g/kg): 8.15 orally; 0.960 i.p. (Newell) |
Introduction
Colorless liquid with luster and special fragrance of fruit. Slightly soluble in water, soluble in ethanol and ether.
Application
Undecenoic acid (CAS 112-38-9), also known as undecylenic acid, is a naturally derived unsaturated fatty acid obtained from castor oil. It is widely recognized for its potent antifungal and antibacterial properties, making it a key ingredient in over-the-counter topical medications for treating fungal skin infections such as athlete’s foot, ringworm, and jock itch. In the pharmaceutical industry, it serves as an intermediate for the synthesis of antifungal agents, antiseptics, and cosmetic preservatives. Undecenoic acid is also used in the production of specialty polymers, plasticizers, lubricants, and corrosion inhibitors. In personal care, it functions as a mild preservative and emollient in shampoos, soaps, and creams. Additionally, its reactivity allows it to be a building block for flavors, fragrances, and high-performance coatings. Xinchem offers custom synthesis, custom chemical synthesis, and contract manufacturing of high-purity undecenoic acid with flexible scaling from R&D to commercial tons. Contact us today for a competitive quote and reliable global supply.







