3815 19 10 --- Catalyst in the form of grains of which 90 % or more by weight have a particle-size not exceeding 10 micrometres, consisting of a mixture of oxides on a magnesium-silicate support, containing by weight: - 20 % or more but not more than 35 % of copper and - 2 % or more but not more than 3 % of bismuth,and of an apparent specific gravity of 0,2 or more but not exceeding 1,0 - EU Vocabularies
