4,4’-二苯醚四甲酸二酐的气相色谱分析

Chromatogrophic Method of Analysis of 4, 4' -oxy-diphthalican-hydride

４．４＇－二苯醚四甲酸二酐是合成聚酰亚胺的重要物质。本文用气相色谱法对醚酐进行了检测，分析结果的相对标准偏差在±０．５％以内。

4,4' -oxy-diphtalican-hyphthalican-hydride is and important substance of synthesizing. In this paper 4,4' -oxy-diphthalican-hydride was detected by gas Chromatogrophic method, and the relative standard deviation was below 0.5%.