二十一烷

二十一烷
IUPAC名
Uneicosane
英文名 Heneicosane
别名 Jenicosane
识别
CAS号 629-94-7
SMILES
 
  • CCCCCCCCCCCCCCCCCCCCC
RTECS 211-118-9
性质
化学式 C21H44
摩尔质量 296.57 g·mol⁻¹
外观 無色固體
密度 0.792g/cm3
熔点 40.5oC
沸点 356.5oC
危险性
欧盟危险性符号
刺激性刺激性 Xi
安全术语 S:S22-S24/25
闪点 110oC
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

二十一烷(英語:heneicosane)是含有21個碳原子的直鏈烷烴,化學式為C21H44或CH3(CH2)19CH3,外觀為無色蠟狀固體,化學性質相當安定。其衍生物二十一烷酸(CH3(CH2)19COOH)可做為製備脂肪酸的原料。

燃燒反應

二十一烷可於高溫環境中燃燒:

C21H44 + 32O2 → 21CO2 + 22H2O

参考文献

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