... mainly used in metallurgy, electronics, medicine, ceramics, nulear industry and chemical industry etc Amorphous element boron CAS 7440-42-8 Boron ... mainly used in metallurgy, electronics, medicine, ceramics, nulear industry and chemical industry etc, it is used in the form of compound ... can be also used as the catalyst for some organic chemical reactions, and so on. Monomer-Boron(7440-42-8)