ClassID:

102151

C09B33/048 - CPC Classification

Classification description:

Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling; Disazo dyes in which the coupling component is a dihydroxy or polyhydroxy compound the coupling component being a bis-naphthol

Recent Application in this class: