查看“︁异丁酸”︁的源代码

{{chembox
|   Reference = <ref>''[[Merck Index]]'', 11th Edition, '''5039'''</ref>
|   Name = 异丁酸
|   ImageFile = Isobutyric acid Formula V.1.svg
|   ImageSize = 200px
|   ImageName = 异丁酸
|   IUPACName = 2-Methylpropanoic acid
|   OtherNames = 2-甲基丙酸<br />甲基丙酸
| Section1 = {{Chembox Identifiers
|   CASNo = 79-31-2
|   CASNo_Ref = {{cascite|correct|CAS}}
|   PubChem = 6590
|   SMILES = CC(C)C(=O)O
  }}
| Section2 = {{Chembox Properties
|   Formula = C<sub>4</sub>H<sub>8</sub>O<sub>2</sub>
|   MolarMass = 88.11
|   Appearance = 有强烈不愉快气味的无色澄清液体
|   Density = 0.9697 g/cm<sup>3</sup> (0 °C)
|   MeltingPtC = -47
|   BoilingPtC = 155
|   pKa = 4.84  (20 °C)
|   VaporPressure = 2 hPa (20 °C)<ref name="GESTIS">{{GESTIS|Name=Isobuttersäure|ZVG=28040|CAS=79-31-2|Datum=6. Januar 2008}}.</ref>
|   Solubility = 210 g/l (20 °C)<ref name="GESTIS" />
|   RefractIndex = 1.3930 (20 °C)<ref name="zghg">中国化工产品大全 上卷，Da155 异丁酸，页520</ref>
  }}
| Section7 = {{Chembox Hazards
|   EUClass = 有害（'''Xn'''）
|   RPhrases = {{R21/22}}
|   SPhrases = {{S2}}
  }}
}}

'''异丁酸'''，一种有四个[[碳]]原子的[[短链饱和脂肪酸]]，结构式(CH<sub>3</sub>)<sub>2</sub>CHCOOH。

==性质==
无色有强烈刺激性气味的油状液体，溶于[[乙醇]]、[[乙醚]]。

==制备==
由[[异丁醛]]被[[空气]]或[[氧气]]直接[[氧化]]而得。
:<math>\ (CH_3)_2CHCHO+\tfrac{1}{2} O_2\rightarrow (CH_3)_2CHCOOH</math>

==用途==
用于合成异丁酸[[酯]]类，如[[异丁酸甲酯]]、[[异丁酸丙酯]]、[[异丁酸异戊酯]]、[[异丁酸苄酯]]等，产物可作香料、药物和食品保鲜剂的原料。

==参考资料==
{{reflist}}

[[Category:短链脂肪酸]]
[[Category:丁酸]]