Some physical constants of normal saturated fatty acids and their methyl esters
Some physical constants of normal saturated fatty acids and their methyl esters
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正常饱和脂肪酸及其甲酯的一些物理常数
DOI：
10.1002/recl.19640830604
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
J. Coops
中科院分区：
文献类型：
--
作者：
N. Adriaanse;H. Dekker;J. Coops
合成了一系列具有5至20个碳链原子的正饱和脂肪酸及其甲酯，并主要通过在具有高达58个理论塔板的塔中分馏甲酯来仔细纯化。
借助于在微量热计中测定的熔融曲线检查纯度，证明纯度为96.6%或更高。
确定折射率，并可表示为
精确度为小数点后5位的5个单位（c =碳链原子数）。
密度，精确到小数点后第四位的1个单位，可以表示为
沸点可以由下式给出：
b.pt. 20 mm
对于甲酯（c> 5），精确至0.1 °。
根据我们的数据，结合文献值，根据Lorentz-Lorenz计算了脂肪链中CH 2基团的分子构象活性。在室温下测定为4.64。
此外，熔点和过渡点，熔化和过渡的热量进行了测定。
The series of the normal saturated fatty acids and their methyl esters with 5 to 20 carbon chain atoms was synthesized and careful purified, mainly by fractional distillation of the methyl esters in columns with up to 58 theoretical plates.
The purity was checked with the aid of melting curves determined in a microcalorimeter and proved to be 96.6% or better.
Refractive indices were determined and can be represented by
with an accuracy of 5 units in the fifth decimal place (c = number of carbon chain atoms).
Densities, accurate to 1 unit in the fourth decimal place, can be represented by
Boiling points can be given by
b.pt. 20 mm
for the methyl esters (c> 5), accurate to 0.1 °.
From our data, combined with literature values, the molecular refractivity of the CH2 group in an aliphatic chain calculated according to Lorentz-Lorenz. was determined at 4.64 at room temperature.
In addition, melting and transition points, and heats of fusion and transition were determined.