carbon black
carbon black
An elemental carbon in the form of virtually pure colloidal particles that are produced by incomplete combustion or thermal decomposition of gaseous or liquid hydrocarbons under controlled conditions. A black, finely divided pellet or powder, its properties of specific surface area, particle size and structure, conductivity and colour can be varied by varying the exact conditions for its production. It is used in tyres, rubber and plastic products, printing inks and coatings.