On the best condition the yield of 2,6-NDA is more than 91.7%, and the purity of 2,6-NDA is 99.5% after purification, which can be used to prepare polymers.

• 在较佳的反应条件下；氧化反应的收率可达91.；7%25；2；6-萘二酸的纯度为97