Determination of Castor Oil Molecular Weight by Vapour Pressure Osmometry Technique

被引：13

作者：

Da Silva, Nivea De Lima ^{[1
]}

Batistella, Cesar ^{[1
]}

Maciel Filho, Rubens ^{[1
]}

Wolf Maciel, Maria Regina ^{[1
]}

机构：

[1] Univ Estadual Campinas, Sch Chem Engn, Lab Separat Proc Dev, BR-13081970 Campinas, SP, Brazil

来源：

ICHEAP-10: 10TH INTERNATIONAL CONFERENCE ON CHEMICAL AND PROCESS ENGINEERING, PTS 1-3 | 2011年 / 24卷

关键词：

ESTERS;

D O I：

10.3303/CET1124101

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Nowadays, the molecular weight of vegetable oil is usually determined by gas chromatography analysis (GC) because this analysis permits the calculation of the fatty acid composition of the vegetable oil. This work presents a method to measure the molecular weight of castor oil using vapour pressure osmometry technique (VPO) and compares the result with GC analysis and with data present in the open literature. The VPO and GC results found were 927.88 g/mol and 928.31 g/mol, respectively. The molecular weight of castor oil is 927 g/mol according to literature, therefore the VPO can be a powerful measurement technique. VPO presents an accurate and fast way to measure the molecular weight of vegetable oil.

引用

页码：601 / 606

页数：6

共 14 条

[1] Molecular weight of petroleum asphaltenes: A comparison between mass spectrometry and vapor pressure osmometry [J].