醋酸丁酯
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- CAS号:
- 123-86-4
- 英文名:
- Butyl acetate
- 英文别名:
- N-BUTYL ACETATE;ACETIC ACID BUTYL ESTER;Acetic acid butyl;Butylacetat;Butyl ethanoate;Butyle;butylacetates;Butile;BUTYLE ACETATE;1-Butyl acetate
- 中文名:
- 醋酸丁酯
- 中文别名:
- 乙酸丁脂;醋酸丁酯;乙酸丁酯;乙酯丁酯;乙酸丁酯酯;乙酸正丁酯;醋酸正丁酯;丁基醋酸盐;正丁基乙酸;N-丁基醋酸
- CBNumber:
- CB00126621
- 分子式:
- C6H12O2
- 分子量:
- 116.16
- MOL File:
- 123-86-4.mol
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醋酸丁酯化学性质
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熔点:
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-78 °C (lit.)
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沸点:
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124-126 °C (lit.)
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密度:
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0.88 g/mL at 25 °C (lit.)
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蒸气密度:
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4 (vs air)
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蒸气压:
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15 mm Hg ( 25 °C)
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折射率:
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n20/D 1.394(lit.)
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FEMA:
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2174 | BUTYL ACETATE
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闪点:
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74 °F
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储存条件:
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Store at +5°C to +30°C.
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溶解度:
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5.3g/l
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形态:
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Liquid
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比重:
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0.883 (20/20℃)
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颜色:
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≤10(APHA)
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气味 (Odor):
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Characteristic; agreeable fruity (in low concentrations); non residual.
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PH值:
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6.2 (5.3g/l, H2O, 20℃)(External MSDS)
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爆炸极限值(explosive limit):
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1.4-7.5%(V)
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嗅觉阈值(Odor Threshold):
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0.016ppm
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香型:
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ethereal
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水溶解性:
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0.7 g/100 mL (20 ºC)
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凝固点:
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-77.9℃
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最大波长(λmax):
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λ: 254 nm Amax: 1.0
λ: 260 nm Amax: 0.20 λ: 275 nm Amax: 0.04 λ: 300 nm Amax: 0.02 λ: 320-400 nm Amax: 0.01-
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Merck:
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14,1535
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JECFA Number:
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127
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BRN:
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1741921
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Henry's Law Constant:
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5.79 at 37 °C (static headspace-GC, van Ruth et al., 2001)
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Dielectric constant:
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5.0(20℃)
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暴露限值:
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TLV-TWA 150 ppm (~710 mg/m3) (ACGIH,
MSHA, and OSHA); TLV-STEL 200 ppm
(~950 mg/m3); IDLH 10,000 ppm (NIOSH).
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稳定性:
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Stable. Flammable. Incompatible with strong oxidizing agents, strong acids, strong bases.
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InChIKey:
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DKPFZGUDAPQIHT-UHFFFAOYSA-N
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LogP:
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1.82-2.3 at 25℃
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CAS 数据库:
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123-86-4(CAS DataBase Reference)
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NIST化学物质信息:
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Acetic acid, butyl ester(123-86-4)
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EPA化学物质信息:
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n-Butyl acetate (123-86-4)
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醋酸丁酯性质、用途与生产工艺
醋酸丁酯又称乙酸丁酯,是一种羧酸酯类合成香料,无色带有浓烈水果香味的透明液体,能与乙醇、乙醚任意混溶,能溶于多数有机溶剂,微溶于水,在水中溶解度为0.05g。其蒸气有微弱的麻醉作用,空气中允许浓度为0.2g/l。本品具有强烈的水果香气,稀释后则有令人愉快的菠萝、香蕉似的香气,持久性极差。天然存在于许多蔬菜、水果和浆果中。乙酸丁酯在日化香精中较少应用,主要用于食用香精配方中。醋酸丁酯共有四种异构体。即醋酸正丁酯、醋酸异丁酯、醋酸仲丁酯、醋酸叔丁酯、它们在自然界中均有存在。它们中较重要者为醋酸正丁酯和醋酸异丁酯。醋酸正丁酯为无色透明液体。有水果香气。先辣后甜味。易挥发。可燃。自然界存在于苹果、香蕉、樱桃、葡萄、桃、李、梨、番茄和可可豆中。
具有愉快水果香味的无色易燃液体。与醇、酮、醚等有机溶剂混溶,与低级同系物相比,较难溶于水。
醋酸丁酯由正丁醇与乙酸在硫酸催化下酯化后用碳酸钠中和后分馏而得。将丁醇、乙酸和硫酸按比例投入酯化釜,在120℃进行酯化,经回流脱水,控制酯化时的酸值在0.5以下,所得粗酯经中和后进入蒸馏釜,经蒸馏、冷凝、分离进行回流脱水,回收醇酯,最后在126℃以下蒸馏而得产品。
醋酸丁酯是一种优良的有机溶剂,对醋酸丁酸纤维素、乙基纤维素、氯化橡胶、聚苯乙烯、甲基丙烯酸树脂以及许多天然树脂如栲胶、马尼拉胶、达玛树脂等均有良好的溶解性能。广泛应用于硝化纤维清漆中,在人造革、织物及塑料加工过程中用作溶剂,在各种石油加工和制药过程中用作萃取剂,也用于香料复配及杏、香蕉、梨、菠萝等各种香味剂的成分。
醋酸丁酯易燃易挥发,其蒸气与空气可形成爆燃性混合物遇明火。高温能引起燃烧爆炸。与氧化剂能发生强烈反应,其蒸气密度比空气大。能在较低处扩散到相当远的地方,遇明火会引起燃烧。
醋酸丁酯
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下游产品
更新日期 | 产品编号 | 产品名称 | CAS编号 | 包装 | 价格 |
---|
2024/04/30 | A19412 | 乙酸正丁酯, 99+%
n-Butyl acetate, 99+% | 123-86-4 | 500ml | 292元 |
2024/04/30 | 39197 | 乙酸正丁酯, HPLC级, 99.5+% n-Butyl acetate, HPLC Grade, 99.5+% | 123-86-4 | 250ml | 353元 |
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