IPC Subgroup
C09B 29/16 Naphthol-sulfonic acids
Introduced: September 1968
Last revised: January 2006
Full Title
Monoazo dyes prepared by diazotising and coupling > from coupling components containing hydroxy as the only directing group > of the naphthalene series > Naphthol-sulfonic acids
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- Subclass:
- ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; MORDANTS; LAKES