some of various finely split forms of carbon produced from the incomplete burning of gas or petroleum oil and used to reinforce rubberized and also as an ingredient in inks, paints, crayons, and polishes.
a superb black powder of amorphous carbon manufactured because of the partial combustion of propane or oil, and utilized as a pigment in manufacture of ink and paint. Pre-owned as a filler in rubber like polymers and plastic. It can help the polymers resist deterioration by UV rays.
a black colloidal substance consisting completely or principally of amorphous carbon and accustomed make pigments and ink