MUTUAL BINARY SOLUBILITIES - WATER ALCOHOLS AND WATER ESTERS
MUTUAL BINARY SOLUBILITIES - WATER ALCOHOLS AND WATER ESTERS
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DOI：
10.1021/je00043a019
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发表时间：
1986-01-01
期刊：
影响因子：
--
通讯作者：
STUART, J
中科院分区：
文献类型：
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作者：
STEPHENSON, R;STUART, J
在0-90 ℃温度下测量了部分互溶的水-有机物对的二元互溶度。给出了31个C4至C12醇、10个甲酸酯、14个乙酸酯、7个丙酸酯和38个C3至C10的其它酯的实验数据。基本上在所有情况下，水在有机层中的溶解度随温度而增加。对于酯类化合物，有机物在水层中的溶解度随温度的升高而降低;对于醇类化合物，有机物在水层中的溶解度随温度的升高先降低，在80 ℃左右达到最低值，然后在较高温度下增加。本文给出了另外31种醇和59种酯的数据。如前所述，使用标准加入法。水和有机物在恒温器中在给定温度下达到平衡，并且用注射器取出每层的样品用于分析。为了测定有机层样品中的水量，加入称量量的乙腈（有时是丙醇），并用Gow-Mac Series 550热导GC、Chromosorb 101填料和Hewlett-Packard 3390 A记录仪-积分仪测量水与乙腈峰的比率。然后，可以立即根据所添加的乙腈的重量和根据已知水和乙腈溶液的GC分析确定的水和乙腈的GC比例因子计算样品中水的百分比。使用覆盖未知溶液组成范围的至少三个标准品对每个系统进行校准。
Mutual binary solubilities have been measured for partially miscible water-organic pairs at temperatures of 0-90 C. Experimental data are given for 31 C4 to C12 alcohols, 10 formate esters, 14 acetate esters, 7 propionate esters, and 38 other esters ranging from C3 to C10. In essentially all cases, solubility of water In the organic layer increases with temperature. For the esters, solubility of organic In the aqueous layer decreases with temperature; for the alcohols, solubility of organic In the aqueous layer first decreases with temperature, goes through a minimum at about 80 C, and then Increases at higher temperatures.A previous paper (7) described our research on the solubility of water in organics and organics in water, and presented solubility data for 19 water-alcohol pairs. The present paper gives data for an additional 31 alcohols and 59 esters. As before, the method of standard additions was used. Water and organic were brought into equilibrium at a given temperature in a thermostat, and samples of each layer were removed with a syringe for analysis. To determine the amount of water in the organic layer sample, a weighed quantity of acetonitrile (sometimes propanol) was added and the ratio of the water to acetonitrile peak was measured with a Gow-Mac Series 550 thermal conductivity GC, Chromosorb 101 packing, and a Hewlett-Packard 3390A recorder-integrator. The per-centage of water in the sample could then be immediately calculated from the weight of acetonitrile added and the GC scale factors for water and acetonitrile as determined from GC analyses of known water and acetonitrile solutions. This calibration was done for each system using at least three standards covering the composition range of the unknown so-lutions.