How to analyze the free ethylene oxide content in the product? ?
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The product after ethylene oxide addition polymerization still contains a small amount of free ethylene oxide. How to measure this content? Thank you very much! ! !
Can I use GC? ? ? ? ?
gc, it is estimated that it cannot be measured. The functional groups of the product and reactant are the same and cannot be distinguished. Think of other detection methods.
Here we use EO as a product to analyze the concentration of EO. The method is 1B-K2B-1 from Dow Chemical Company. The method is summarized as follows: Sum in weight percent all the impurities found: water, acidity, carbon dio * de and aldehydes and subtract from 100.0 percent to obtain the percent by weight ethylene o * de. Subtract the sum of the weight percentages of all impurities found, including water, acid, carbon dioxide and aldehydes, from 100% to obtain the weight percentage of ethylene oxide. (Details can be provided if necessary) The poster's application is to analyze EO as an impurity in the product, which may not be suitable. :handshake:handshake
GC is used for separation analysis. If homologues and isomers can be separated, does it matter that the functional groups are the same? Most free monomers of polymers are analyzed by GC.
It should be using GC, thank you all above!