Oenanthic anhydride
Heptanoic anhydride
CAS: 626-27-7
Molecular Formula: C14H26O3
Oenanthic anhydride - Names and Identifiers
| Name | Heptanoic anhydride |
| Synonyms | Enanthicanhydride ENANTHIC ANHYDRIDE Enanthic anhydride HEPTANOIC ANHYDRIDE Oenanthic anhydride Heptanoyl anhydride Heptanoic anhydride OENANTHIC ANHYDRIDE N-HEPTANOIC ANHYDRIDE heptanoicacidanhydride heptanoicacid,anhydride n-Heptanoic acid anhydride |
| CAS | 626-27-7 |
| EINECS | 210-940-5 |
| InChI | InChI=1/C14H26O3/c1-3-5-7-9-11-13(15)17-14(16)12-10-8-6-4-2/h3-12H2,1-2H3 |
Oenanthic anhydride - Physico-chemical Properties
| Molecular Formula | C14H26O3 |
| Molar Mass | 242.35 |
| Density | 0.917 |
| Melting Point | -12 °C |
| Boling Point | 278-282 °C |
| Flash Point | 110°C |
| Vapor Presure | 0.22Pa at 25℃ |
| Appearance | Liquid |
| Color | Clear light yellow |
| Storage Condition | Inert atmosphere,Room Temperature |
| Refractive Index | 1.432-1.434 |
| Physical and Chemical Properties | Colorless oily liquid. Freezing point -12.4 ℃, boiling point 268 ℃,164 ℃(1.67kPa), relative density 0.923, refractive index 1.4330(20 ℃). |
Oenanthic anhydride - Risk and Safety
| Hazard Symbols | C - Corrosive |
| Risk Codes | 34 - Causes burns |
| Safety Description | S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S28 - After contact with skin, wash immediately with plenty of soap-suds. |
| UN IDs | 1760 |
| HS Code | 29159000 |
| Hazard Class | 8 |
| Packing Group | III |
Oenanthic anhydride - Reference Information
| LogP | 5.58 at 25℃ |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | for organic synthesis. |
| production method | heptanoyl chloride is added to a mixture of anhydrous pyridine and anhydrous benzene to precipitate a heptanoyl chloride-pyridine complex, with continued stirring, heptanoic acid was added in equimolar amounts with heptanoyl chloride, and the temperature was rapidly increased to 60-65 °c to form pyridine hydrochloride. The solid was filtered off, washed with benzene, and the benzene washing solution was incorporated into the filtrate, followed by concentration under reduced pressure. The residue was distilled under reduced pressure to obtain heptanic anhydride in a yield of 78-1.6 by collecting a fraction at a temperature of 155-162 ° C. (83% kPa). |
Last Update：2024-04-10 22:29:15
