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乙酸乙酯 CAS:141-78-4 4L

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号:E195-4

牌:Fisher

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中文别名

乙酸乙脂乙酸乙酯标准品乙酸乙酯(超干)无水醋酸乙酯穀醇乙酸乙醚甜菜糖蜜滓醋酸乙酯标准品醋酸乙酯

英文别名

METHYLATED SPIRIT INDUSTRIALRARECHEM AL BI 0544METHYLATED SPIRITREAGENT ALCOHOLAKOS BBS-00004223SPIRIT OF WINEMETHYLATED SPIRIT MINERALISEDMETHYLCARBINOLEthyl ethanoateAcetidinEthylacetateEINECS 205-500-4Vinegar naphthaEthyl acetic esterMFCD00003568Acetic etherAcetic acid ethyl esterAcetoxyethane

Inchi

InChI=1S/C4H8O2/c1-3-6-4(2)5/h3H2,1-2H3

CAS

InChkey

XEKOWRVHYACXOJ-UHFFFAOYSA-N

Canonical Smiles

CCOC(=O)C

国际化联命名

ethyl acetate
密度:

0.902熔点:-83.5℃沸点:75-77.5℃折射率:1.371-1.374闪光点:-4℃蒸气压力:112mmHg at 25°CPSA:26.30000logP:0.56940溶解度:Miscible with ethanol, acetone, diethyl ether and benzene.最大Λ:λ: 256 nm Amax: ≤1.00λ: 275 nm Amax: ≤0.05λ: 300 nm Amax: ≤0.03λ: 325-400 nm Amax: ≤0.005黏性:0.423 mPa.s at 25 deg C蒸汽密度:3 (20 °C, vs air)外观:无色澄清液体,有芳香气味,易挥发。大气OH速率常数:1.60e-12 cm3/molecule*sec自燃温度:427 °C致癌性:Ethyl acetate was not mutagenic in bacterialassays; it was not genotoxic in a numberof in vivo assays but did cause chromosomaldamage in hamster cells in vitro.Ethyl acetate has a fruity odor detectableat 10ppm.The 2003 ACGIH threshold limit valuetime-weighted average (TLV-TWA) for ethylacetate is 400pm (1440mg/m3).化学性质:Ethyl acetate (structure shown above) is the most familiar ester to many chemistry students and possibly the ester with the widest range of uses. Esters are structurally derived from carboxylic acids by replacing the acidic hydrogen by an alkyl or aryl group. Ethyl acetate itself is a colourless liquid at room temperature with a pleasant "fruity" smell, b.p. 77°C.物理属性:Clear, colorless, mobile liquid with a pleasant, sweet fruity odor. Experimentally determineddetection and recognition odor threshold concentrations were 23 mg/m3 (6.4 ppmv) and 48 mg/m3(13.3 ppmv), respectively (Hellman and Small, 1974). Cometto-Mu?iz and Cain (1991) reportedan average nasal pungency threshold concentration of 67,300 ppmv.颜色:无色澄清液体,有芳香气味,易挥发。[1]分解:When heated to decomposition it emits acrid smoke and irritating fumes.可燃性:Ethyl acetate is a flammable liquid (NFPA rating = 3), and its vapor can travel a considerable distance to an ignition source and "flash back." Ethyl acetate vapor forms explosive mixtures with air at concentrations of 2 to 11.5% (by volume). Hazardous gases produced in ethyl acetate fires include carbon monoxide and carbon dioxide. Carbon dioxide or dry chemical extinguishers should be used for ethyl acetate fires.燃烧热:2238.1 kJ/mol汽化热:35.60 kJ/mol at 25 deg C亨利法律常量:0.39 at 5.00 °C, 0.58 at 10.00 °C, 0.85 at 15.00 °C, 1.17 at 20.00 °C, 1.58 at 25.00 °C (columnstripping-UV, Kutsuna et al., 2005)电离电位:10.01 eV气味:Pleasant fruity odor detectable at 7 to 50 ppm (mean = 18 ppm)气味阈值:0.87ppm物理属性:

乙酸乙酯(141-78-6)的性状:    1.沸点77.1℃,密度(20℃)0.89~0.90g/mL;无色透明易挥发性液体,有芳香气味。溶于乙醇、乙醚、丙酮、三氯甲烷等溶剂,微溶于水,易燃。    2.大白鼠经口LD505.62g/kg。能与氯仿、乙醇、乙醚、丙酮混溶,溶于水。其外观呈无色透明液体,具有水果香气。熔点-83.6℃,相对密度d2040.902,折射率1.3719。 性状 无色、具有水果香味的易燃液体。 熔点 -83.6℃ 沸点 77.1℃ 相对密度 0.9003 折射率 1.3723 闪点 4℃ 溶解性 与醚、醇、卤代烃、芳烃等多种有机溶剂混溶,微溶于水。

酸度系数(pka):16-18(at 25℃)溶解性:微溶于水,溶于乙醇、丙酮、乙醚、氯仿、苯等多数有机溶剂。[15]光谱特性:Index of Refraction = 1.3719 at 20 deg C/D
MAX ABSORPTION (METHANOL): 209 NM (LOG E= 1.86); SADTLER REFERENCE NUMBER: 4 (IR, PRISM); 3 (IR, GRATING)
IR: 4802 (Coblentz Society Spectral Collection)
UV: 4-21 (Organic Electronic Spectral Data, Phillips et al, John Wiley & Sons, New York)
NMR: 79 (Varian Associates NMR Spectra Catalogue)
MASS: 158 (Atlas of Mass Spectral Data, John Wiley & Sons, New York)
Intense mass spectral peaks: 43 m/z, 61 m/z, 70 m/z, 73 m/z, 88 m/z
稳定性:Stable. Incompatible with various plastics, strong oxidizing agents. Highly flammable. Vapour/air mixtures explosive. May be moisture sensitive.存储温度:2-8°C表面拉伸:

24 DYNES/CM AT 20 DEG C

 

存储Ethyl acetate should be stored in an airtight container, protectedfrom light and at a temperature not exceeding 30°C. Ethyl acetate isslowly decomposed by moisture and becomes acidic; the materialcan absorb up to 3.3% w/w water.Ethyl acetate decomposes on heating to produce ethanol andacetic acid, and will emit acrid smoke and irritating fumes. It isflammable and its vapor may travel a considerable distance to anignition source and cause a ‘flashback’.The alkaline hydrolysis of ethyl acetate has been shown to beinhibited by polyethylene glycol and by mixed micelle systems.垃圾处理Dissolve or mix the materialwith a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal,state, and local environmental regulations must beobserved. Consult with environmental regulatory agencies for guidance on acceptable disposal practices.Generators of waste containing this contaminant (≧100 kg/mo) must conform with EPA regulations governing storage,transportation, treatment, and waste disposal.用途可用于溶解硝化纤维素、油墨、油脂等,亦可用于造漆、人造革、塑料制品、染料、药物和香料等的原料;

广泛用于油墨、胶粘剂、人造革的生产中,也是制药和有机酸的萃取剂,还用作清漆、香料的组分;

用作分析试剂、色谱分析标准物质及溶剂;

GB 2760—96规定为允许使用的食用香料。主要用于着香、柿子脱涩、制作香辛料的颗粒或片剂、酿醋配料。广泛用于配制樱桃、桃、杏等水果型香精及白兰地等酒用香精。亦用作胶姆糖胶基醋酸乙烯酯的溶剂、色素稀释剂,也用于脱咖啡因的咖啡、茶和水果、蔬菜等。;

作为饲料的调味剂。;

可少量用于玉兰、依兰、桂花、兔耳草花及花露水、果香型等香精作头香来提调新鲜果香之用,特别是用于香水香精中,有圆熟的效果。适用于樱桃、桃子、杏子、葡萄、草莓、悬钩子、香蕉、生梨、凤梨、柠檬、甜瓜等食用香精。酒用香精如白兰地、威士忌、朗姆、黄酒、白酒等亦用之。;

乙酸乙酯是应用最广的脂肪酸酯之一,是一种快干性溶剂,具有优异的溶解能力,是极好的工业溶剂。可用于硝酸纤维、乙基纤维、氯化橡胶和乙烯树脂、乙酸纤维素酯、纤维素乙酸丁酯和合成橡胶,也可用于复印机用液体硝基纤维墨水。可作粘接剂的溶剂、喷漆的稀释剂;在纺织工业中可用作清洗剂,在食品工业中可作为特殊改性酒精的香味萃取剂,还用作制药过程和有机酸的萃取剂。在香料工业中是重要的香料添加剂,可作调香剂的组分。乙酸乙酯也是制造染料、药物和香料的原料。乙酸乙酯是许多类树脂的高效溶剂,广泛应用于油墨、人造革生产中。

 

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