A CD-4 developer intermediate,2-[ethyl(3-methyl-4-nitrosophenyl)amino]ethanol,was synthesized;its structure was characterized and the synthesis process was studied.The optimum process was obtained:After acidifying the raw materials with hydro-chloric acid,the raw materials were nitrosified with 95%molar amount of sodium nitrite,and then neutralized with ammonia,the wa-ter layer was removed by dichloromethane extraction and washed,and finally the target product was obtained by atmospheric distillation and dissolving.The research lays a foundation for the industrialization of CD-4 developing agent.
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