3815199015
- Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included
- Supported catalysts
- Other
- Other
- Catalyst, in the form of a powder, consisting of a mixture of metal oxides fixed on a support of silicon dioxide, containing by weight 20 % or more but not more than 40 % of molybdenum, bismuth and iron evaluated together, for use in the manufacture of acrylonitrile