Silicon carbide

Silicon carbide (CAS 409-21-2, EC 206-991-8, formula CSi) is an inorganic compound produced by high-temperature carbothermal reduction of silica. It is commercially available under the designations UA1, UA2, UA3, UA4, and UF15, and carries no assigned E-code. It falls within the Salts & Minerals category.

In semiconductor fabrication, silicon carbide substrates enable power devices to operate at higher voltages and temperatures than silicon alone, due to its exceptional thermal conductivity and wide bandgap. In refractory and abrasive applications within mining and metals processing, it functions as a cross-linking agent in bonded abrasive systems, hardening the matrix under thermal curing conditions.

Silicon carbide is supplied in multiple grades including nanopowder and coarser crystalline forms, with purity levels suited to electronics or industrial end uses. The substance is registered under REACH (EC 206-991-8) and is classified under HS code 28492000. Packaging formats vary by grade; buyers should confirm specifications and compliance documentation at the point of inquiry.