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| 化学名: | レブリン酸 エチル | | 英語化学名: | Ethyl levulinate | | 别名: | Levulinic acid ethyl ester 4-oxopentanoate;ETHYL LEVULINATE 98+% FCC;Ethyllevulinate,98%;4-Oxapentanoic acid, ethyl ester;Laevulinic acid, ethyl ester;β-Acetylpropionic acid, ethyl ester;4,6-DIMETHOXY-2-(PHENOXYCARBONYL)AMINOPYRIMIDINE(LEVULINICACIDETHYLESTER);Ethyl-4-oxovalerat | | CAS番号: | 539-88-8 | | 分子式: | C7H12O3 | | 分子量: | 144.17 | | EINECS: | 208-728-2 | | カテゴリ情報: | Pharmaceutical Intermediates;bc0001 | | Mol File: | 539-88-8.mol |  |
| 主な危険性 | Xi | | Rフレーズ | 36/37/38 | | Sフレーズ | 24/25 | | WGK Germany | 2 | | RTECS 番号 | OI1700000 | | Hazard Note | Irritant | | TSCA | Yes | | HSコード | 29183000 |
| | レブリン酸 エチル Usage And Synthesis |
| 外観 | 無色～淡黄色の液体 | | 用途 | 有機合成原料。 | | 化学的特性 | clear yellowish liquid | | 化学的特性 | Ethyl levulinate has an ethereal, fruity, green, sweet, pineapple, apple, rhubarb odor. | | 天然物の起源 | Reported found in white bread, roasted onion, wheat bread, cognac, malt whiskey, grape wines, cocoa, bilberry
wine, Bourbon vanilla and cherimoya (Annona cheremolia Mill.). | | 使用 | Ethyl levulinate is used to develop a preparative HPLC method to preserve wine aromas and isolates fruity characteristics of red wine aroma extracts | | 使用 | Solvent for cellulose acetate and starch ethers,
flavoring. | | 使用 | Ethyl levulinate was used to develop a preparative HPLC method to preserve wine aromas and isolates fruity characteristics of red wine aroma extracts. | | 定義 | ChEBI: Ethyl levulinate is an oxo carboxylic acid. | | 製造方法 | Usually obtained by direct esterification of levulinic acid with ethanol and H2SO4 in benzene or in toluene; also in the
presence of HCI in ethanol; other methods starting from glucose, fructose and others are of less importance. | | Taste threshold values | Taste characteristics at 40 ppm: fruity, green, waxy and melon. | | Synthesis Reference(s) | The Journal of Organic Chemistry, 59, p. 486, 1994 DOI: 10.1021/jo00081a034
Synthetic Communications, 8, p. 279, 1978 DOI: 10.1080/00397917808065622 | | 一般的な説明 | Ethyl levulinate is diluent for biodiesel fuels with high saturated fatty acid content. | | 燃焼性と爆発性 | Not classified | | 安全性プロファイル | A skin irritant. When
heated to decomposition it emits acrid
smoke and irritating fumes | | 純化方法 | Stir the ester with Na2CO3 and charcoal, filter and distil. It is freely soluble in H2O and EtOH [IR, NMR: Sterk Monatsh Chem 99 1770 1968, Thomas & Schuette J Am Chem Soc 53 2328 1931, Cox & Dodds J Am Chem Soc 55 3392 1933]. [Beilstein 3 IV 1562.] |
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