等级
for GC derivatization
质量水平
蒸汽密度
3.5 (vs air)
蒸汽压
10 mmHg ( 36 °C)
4 mmHg ( 20 °C)
检测方案
≥99.0% (GC)
≥99.0%
形式
liquid
自燃温度
629 °F
质量
LiChropur™
expl. lim.
10.3 %
反应适用性
reagent type: derivatization reagent
reaction type: Acylations
技术
gas chromatography (GC): suitable
蒸发残留物
≤0.003%
折射率
n20/D 1.390 (lit.)
bp
138-140 °C (lit.)
mp
−73 °C (lit.)
溶解性
H2O: slightly soluble
密度
1.08 g/mL (lit.)
SMILES字符串
CC(=O)OC(C)=O
InChI
1S/C4H6O3/c1-3(5)7-4(2)6/h1-2H3
InChI key
WFDIJRYMOXRFFG-UHFFFAOYSA-N
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一般描述
乙酸酐是一种对金属有腐蚀性的酯化剂。它是一种无色液体，有强烈的醋味。它主要用于生产塑料、纤维、药物、染料和爆炸物等。
酰基化是甲硅烷基化的一种替代方法，能够通过羧酸或衍生物的作用将含由活性氢（-OH、-SH和-NH）组成的化合物转化成酯类、硫酯和酰胺。与卤化碳相邻的羰基有利于提高电子俘获检测器（ECD）响应。酰基化有几大优点：
乙酸酐是一种在GC/MS分析中用于形成断裂导向衍生物的试剂。
- 通过保护不稳定基团提高化合物的稳定性。
- 可呈现诸如碳水化合物或氨基酸等物质的挥发性，这些物质有几个极性基团，它们不易挥发，通常在加热时分解。
- 允许进行分离，这是未衍生化合物无法实现的。
- 通过ECD可在极低水平上检测到化合物。
乙酸酐是一种在GC/MS分析中用于形成断裂导向衍生物的试剂。
应用
更多信息请参见产品信息
适用于乙酰、对乙酰氨基酚、乙醇、醛糖和部分甲基化醛糖、醛固酮、胺类、氨基酸、氨基糖（在多糖中）、氨基糖甲基苷、2-氨基-2-脱氧己糖、精氨酰多肽、芳基硫酸酯、胆汁酸、氨基甲酸盐、碳水化合物、脑苷酯、胱氨酸和半胱氨酸（在多肽中）、去甲基多塞平、3,4-二羟基苯基乙二醇、雌激素、多羟糖醇、吡喃己糖苷、己糖胺、异羟肟酸、羟胺、n-羟基氨基甲酸酯、羟基类固醇、纤维醇、4-甲氧基和3,4-二甲氧基苯乙胺、甲酯、甲基（甲基O-甲基-a-D-吡喃葡萄糖苷）糖醛酸酯、核苷、核苷基和糖类、部分甲基化戊糖和己糖、多肽、苯基烷基胺、苯乙胺、多糖成分、前列腺素A、B和E、血清素、唾液酸、糖类、天然糖和色胺等的衍生化。
其他说明
乙酸酐、乙酰基、n-乙酰基、n-乙酰基-n、o-乙酰基、乙酸、糖腈乙酰酯、氨基多羟糖醇乙酸、芳基乙酸、完全甲基乙酰基、甲酯、三氟乙酰基、双三甲基硅基、三甲基硅基聚氨基乙醇和O-三甲基硅基（TMS）试剂。
法律信息
LiChropur is a trademark of Merck KGaA, Darmstadt, Germany
警示用语：
Danger
危险分类
Acute Tox. 2 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1B
WGK
WGK 1
闪点(°F)
closed cup
闪点(°C)
closed cup
个人防护装备
Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
法规信息
易制毒化学品（2类）
危险化学品
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J M Mee et al.
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A quantitative analysis of amino acids in microsamples of dried blood spots by chemical ionization mass spectrometry has been developed. Isotope ratio determination was used as the quantitating technique via multiple labelled internal standards. This procedure yields excellent precision and
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