Dichlorofluorobenzene is prepared by diazotizating of 2,4-dichloro aniline and substituting of 2,4-dichloro diazo benzene with fluorinion.

在了由2,4-二氯苯胺经过重氮化、置换制得2,4-二氯氟苯的生产新,产品纯度达到99。

This article expounds the in fluences from the aspects of precoating photosensitiser coating anddrying process on the quality of diazo paper.

本文以予涂,感光液涂布及干燥三方面对晒图纸质量的影响。