High-purity carboxylic acid ester and method for producing same
Inactive Publication Date: 2018-09-27
MITSUBISHI GAS CHEM CO INC
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Abstract
The present invention makes it possible to provide a high-purity carboxylic acid ester in which the Ag, Al, Au, Ca, Cr, Cu, Fe, K, Mg, Na, Sn, and Zn contents as metal impurity contents are each less than 1 ppb and the anionic impurity content is less than 1 ppm. The present invention also makes it possible to provide a method for producing a high-purity carboxylic acid ester, the method including a step for bringing a crude carboxylic acid ester that contains anionic impurities and Ag, Al, Au, Ca, Cr, Cu, Fe, K, Mg, Na, Sn, and Zn as metal impurities into contact with a cation-exchange resin (II), followed by a step for bringing the crude carboxylic acid ester into contact with an anion-exchange resin (III).
Application Domain
Ion-exchange process apparatusChromatographic cation exchangers +5
Technology Topic
Carboxylic esterCationic exchange +3
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PUM
Property | Measurement | Unit |
Fraction | 1.0E-9 | fraction |
Fraction | 1.0E-6 | fraction |
Fraction | 8.0E-9 | fraction |
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