吉化染料厂以氯苯作溶剂硫酸二甲酯为烷化剂生产还原艳绿FFB工艺于1998年3月24日通过了吉化集团公司和吉林省石油化学工业厅组织的技术鉴定。此项新工艺，采用氯苯为溶剂，硫酸二甲酯为甲基烷化剂，并采用相转移催化剂，使用密闭的管式过滤器。在生产中部分原料单耗大幅度下降 Jihua Dyestuff Factory uses chlorobenzene as solvent and dimethyl sulphate as alkylating agent to produce the reductive brilliant green FFB process. On March 24, 1998, it passed the technical appraisal organized by Jilin Chemical Group Corporation and Jilin Province Petrochemical Industry Department. This new process uses chlorobenzene as a solvent, dimethyl sulfate as a methyl alkylating agent, and a phase transfer catalyst using a closed tube filter. In the production of some raw materials unit consumption dropped significantly