… Reaction initiators, reaction accelerators and catalytic preparations, not …
Explanatory notes
… 38.15 ‑ Reaction initiators, reaction accelerators and catalytic … the active substance 3815.19 ‑ ‑ Other 3815.90 ‑ Other This heading covers preparations which initiate or accelerate … consists of alumina, carbon, silica gel, siliceous fossil meal or ceramic materials. Examples of “supported catalysts” …