SYNTHESIS, CHARACTERIZATION AND THERMAL ANALYSIS OF LITHIUM, SODIUM AND POTASSIUM SALTS OF THE PALMITIC ACID AND ITS ETHYL ESTER

被引：1

作者：

de Sales, Andre Luis Castro ^{[1
]}

Ramos, Luiz Antonio ^{[1
]}

Nunes, Ronaldo Spezia ^{[1
]}

Neto, Salvador Claro ^{[1
]}

Gomes Cavalheiro, Eder Tadeu ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

来源：

QUIMICA NOVA | 2008年 / 31卷 / 07期

关键词：

palmitic acid; thermal analysis; thermogravimetry;

D O I：

10.1590/S0100-40422008000700024

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Alkaline salts of the palmitic acid were synthesized and characterized from aqueous and ethanolic medium. The salts were characterized by elemental analysis (EA) and infrared spectroscopy (IR). EA and IR, being its synthesis comproved, also characterized the ethyl palmitate. All the salts and the ester were submitted to thermal analysis using thermogravimetry (TG), and differential thermal analysis (DTA) in the temperature ranging from room to 700 degrees C under air dynamic atmosphere. Differential scanning calorimetry (DSC) measurements were taken from -90 degrees C up to temperatures close to the starting of the decomposition temperature, determined by thermogravimetry, using heating and cooling cycles.

引用

页码：1722 / U141

页数：8

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