辛酸








































































辛酸





IUPAC名
octanoic acid
别名
 C8:0 (Lipid numbers)
识别

CAS号
124-07-2 ?

PubChem
379

ChemSpider
370

SMILES


InChI


InChIKey
WWZKQHOCKIZLMA-UHFFFAOYAH
性质

化学式
C8H16O2

摩尔质量
 144.21 g·mol⁻¹
外观
 油状无色液体

密度
 0.910 g/cm3

熔点
 16.7 °C[1]

沸点
 237 °C（510 K）

溶解性（甲醇）
 6.31 M [2]

pKa
4.89[3]
若非注明，所有数据均出自一般条件（25 ℃，100 kPa）下。

辛酸是八个碳的直链羧酸。常温下为无色油状液体。辛酸微溶于水，溶于多数有机溶剂。



用途


用于制染料、药物、防腐剂、杀菌剂等。



参考资料




  1. ^ Beare-Rogers, J.; Dieffenbacher, A.; Holm, J.V. Lexicon of lipid nutrition (IUPAC Technical Report). Pure and Applied Chemistry. 2001, 73 (4): 685–744. doi:10.1351/pac200173040685. 


  2. ^ Solubility of octanoic acid in methanol


  3. ^ Lide, D. R. (Ed.). CRC Handbook of Chemistry and Physics (70th Edn.). Boca Raton (FL):CRC Press. 1990. 























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脂類（脂肪）：以脂肪酸為主


饱和脂肪酸
（羧酸列表）











短链

蚁酸（C1） · 醋酸（C2） · 初油酸（C3） · 酪酸（C4） · 纈草酸（C5）
其他

己酸（C6） · 葡萄花酸（C7） · 辛酸（C8） · 壬酸（C9） · 癸酸（C10） · 十一酸（C11） · 月桂酸（C12） · 十三酸（C13） · 肉豆蔻酸（C14） · 十五酸（C15） · 棕櫚酸（C16） · 珠光脂酸（C17） · 硬脂酸（C18） · 十九酸（C19） · 花生酸（C20） · 二十一酸（C21） · 山嵛酸（英语：Behenic acid）（C22） · 二十三酸（英语：Tricosylic acid）（C23） · 木蠟酸（英语：Lignoceric acid）（木焦油酸）（C24） · 二十五酸（英语：Pentacosylic acid）（C25） · 蠟酸（C26） · 二十七酸（C27） · 褐煤酸（C28） · 二十九酸（C29） · 蜂花酸（C30） · 三十一酸（C31） · 蟲漆蠟酸（C32) · 葉虱酸（C33） · 三十四酸（C34） · 三十五酸（C35) · 三十六酸（C36）


不飽和脂肪酸





















ω−3多元不饱和

十六碳三烯酸（HTA）（16:3） · α-亚麻酸（ALA）（18:3） · 十八碳四烯酸（SDA）（18:4） · 二十碳三烯酸（ETE）（20:3） · 二十碳四烯酸（ETA）（20:4） · 二十碳五烯酸（EPA）（20:5） · 二十一碳五烯酸（HPA）（21:5） · 二十四碳六烯酸（Nisinic acid）（21:6） · 二十二碳五烯酸（DPA）（22:5） · 二十二碳六烯酸（DHA）（22:6） · 二十四碳五烯酸（Tetracosapentaenoic acid）（24:5）
ω−6多元不饱和

亚油酸（LA）（18:2） · 共轭亚油酸（CLA）（18:2） · γ-亚麻酸（GLA）（18:3） · 二十碳三烯酸（DGLA）（20:3） · 花生四烯酸（20:4） · 腎上腺酸（22:4） · 二十碳四烯酸（ETA）（20:4）
ω−7单元不饱和（英语：Omega-7 fatty acid）

棕榈油酸（16:1） · 异油酸（18:1） · 二十烯酸（20:1）
ω−9单元不饱和

油酸（18:1） · 反式油酸（trans-18:1） · 二十碳烯酸（20:1） · 芥酸（22:1） · 神经酸（鯊油酸）（24:1） · 11-二十碳烯酸（Gondoic acid）（20:1） · 二十碳三烯酸（Mead acid）（20:3）


反式脂肪酸

异油酸（18:1） · 反式油酸（trans-18:1）

生物分子構成：糖类（醇、醣蛋白、糖苷）、脂类（类花生酸、脂肪酸、磷脂、胆固醇与甾体中间产物、鞘脂）、核酸（碱基、核苷和核苷酸、核苷酸代谢中间产物）、蛋白质（氨基酸、氨基酸代谢中间产物）、四吡咯、血红素代谢中间产物




规范控制

  • GND: 4300566-4



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