Explanatory notes
… of these descriptions is usually in the form of powder, crystals, pastes, etc. Synthetic organic colouring … (8) Acridines, quinolines (e.g., cyanines, isocyanines, cryptocyanines). (9) Di- or triphenylmethanes, e.g., … Note to heading 32.05). (14) Phthalocyanines (even if crude) and their metallic compounds, including their …