Analysis of Methanol Blended in Styrene
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Some unscrupulous styrene transporters replace styrene with a small amount of methanol, and then sell the resulting mixture to untrustworthy buyers. Who can tell me how to detect the presence of methanol in styrene when it has been mixed with a small amount of methanol, and how to determine the amount of methanol present?
The simplest and most reliable method is to use chromatography to determine the composition. If on-site, the styrene sample can be extracted using water; methanol is readily soluble in water, and the extract can then be analyzed for methanol (through redox titration). Note to use as a sample blank.
The best way is to conduct a laboratory analysis
It is best to use chromatographic analysis, as it is fast and accurate