Method for measuring content of oxalic acid in dimethyl oxalate

The invention belongs to the technical field of detection, and particularly relates to a method for determining the content of oxalic acid in dimethyl oxalate. According to the method, an accurate oxalic acid content result is obtained by measuring the total acid content in the dimethyl oxalate and subtracting the nitric acid content, so that the problem that two mixed acids are respectively measured is solved, and the problem that the oxalic acid measurement result is relatively high due to the fact that nitric acid impurities which are both acid substances participate in the reaction during titration can be avoided. By adopting the determination method provided by the invention to determine the content of oxalic acid in dimethyl oxalate, the interference of nitric acid and a solution substrate can be eliminated, and the test result is better in parallelism and higher in accuracy. 本发明属于检测技术领域，具体涉及一种草酸二甲酯中草酸含量的测定方法。本发明通过测定草酸二甲酯中的总酸含量，减去硝酸含量以获得准确的草酸含量结果，克服了两种混酸分别测量的难题，可以避免滴定时同为酸类物质的硝酸杂质参与反应而导致的草酸测定结果偏高的问题。采用本发