Method for testing the acid value of PTA raw materials
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Here, we are using the method of dissolving in dimethylformamide and titrating with a 0.1 mol/L NaOH solution. This method seems to be time-consuming, and the titration process is quite difficult; it’s easy for the values to exceed the specified limits. I was wondering if there are any colleagues who have conducted tests in this area – what methods do you all use? There are also some issues that arise during the operation process, and I hope we can discuss them together
Are you using a burette? The burette is too imprecise