DIFF Subgroup
C09B 43/14 with phosgene or thiophosgene
Introduced: September 1968
Full Title
Preparation of azo dyes from other azo compounds > by acylation of amino groups > with polyfunctional acylating agents > with phosgene or thiophosgene
No child classifications to compare. This is a leaf node in both IPC and CPC.