ASTM E611-08(2015)e1
Standard Test Methods for Low Concentrations of Diethlyene Glycol in Ethylene Glycol by Gas Chromatography

Standard No.

ASTM E611-08(2015)e1

Release Date

2008

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM E611-08(2015)e1

Scope

3.1 Either test method may be used to determine the concentrations of diethylene glycol in ethylene glycol. The concentrations of the components are obtained by a normalization technique, based on the assumption that all components are eluted under the conditions used. If all components should not be eluted, the calculated concentrations will be erroneously high, with the major component showing the most significant absolute error. Since water is not detected by these procedures, the results are on a water-free basis. Water may be determined in accordance with the applicable sections of Test Methods E202 and the gas chromatographic results corrected for the water concentration.

3.2 Both test methods are currently in industrial use. Test Method A is the simpler of the two test methods because it does not require the preparation of derivatives prior to gas chromatographic analysis. The results obtained by Test Method A are slightly more accurate than those obtained by Test Method B. With respect to precision there is no significant difference between the two test methods. Test Method B has been reported to be suitable also for the analysis of a wide variety of glycol ethers, but this use is beyond the scope of this standard.

1.1 These test methods are intended primarily for the analysis of mixtures of ethylene and diethylene glycols in which the diethylene glycol concentration is 0.18201;% or less. Both test methods should be applicable to higher concentrations of diethylene glycol, but precision and bias estimates have been obtained only for 0.05 to 0.18201;% diethylene glycol.

Note 1: Test Methods E202 describe another gas chromatographic test method applicable to mixtures of ethylene, diethylene, and triethylene glycols and mixtures of propylene, dipropylene, and tripropylene glycols in which one of the glycols is the principal component and the other two are present in concentrations of 0.1 to 18201;% each.

Note 2: Test Method E2409 describes another gas chromatographic test method for the determination of glycol impurities in mono-, di-, tri- and tetraethylene glycol (MEG, DEG, TEG and TeEG) in the range of 5 to 3000 μg/g.

1.2 The two test methods are given as follows:

	Sections
Test Method A—Nonderivative Method	5 to 13
Test Method B—Derivative Met...... ASTM E611-08(2015)e1 Referenced Document ASTM D1193 Standard Specification for Reagent Water ASTM E180 Standard Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals ASTM E202 Standard Test Methods for Analysis of Ethylene Glycols and Propylene Glycols ASTM E2409 Standard Test Method for Glycol Impurities in Mono-, Di-, Tri- and Tetraethylene Glycol and in Mono- and Dipropylene Glycol(Gas Chromatographic Method) ASTM E611-08(2015)e1 history 2008 ASTM E611-08(2015)e1 Standard Test Methods for Low Concentrations of Diethlyene Glycol in Ethylene Glycol by Gas Chromatography 2015 ASTM E611-08(2015) Standard Test Methods for Low Concentrations of Diethlyene Glycol in Ethylene Glycol by Gas Chromatography 2008 ASTM E611-08 Standard Test Methods for Low Concentrations of Diethlyene Glycol in Ethylene Glycol by Gas Chromatography 2003 ASTM E611-03 Standard Test Methods for Low Concentrations of Diethlyene Glycol in Ethylene Glycol by Gas Chromatography 1992 ASTM E611-92 Test Methods for Low Concentrations of Diethylene Glycol in Ethylene Glycol by Gas Chromatography Copyright ©2024 All Rights Reserved