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Carbon black is a kind of Amorphous carbon. It is a light, loose, and extremely fine black powder with a very large surface area ranging from 10 to 3000m2/g. It is a product of incomplete combustion or thermal decomposition of carbon containing substances (coal, natural gas, heavy oil, fuel oil, etc.) under insufficient air conditions. Gas black is made from natural gas, lamp black is made from oil, and acetylene black is made from acetylene. In addition, there are "slot black" and "furnace black". According to the performance of carbon black, there are "reinforced carbon black", "conductive carbon black", "wear-resistant carbon black", etc. It can be used as a black dye for manufacturing Chinese ink, ink, paint, and also as a reinforcing agent for rubber.

Carbon black is usually divided into pigment carbon black, rubber carbon black, conductive carbon black, and specialized carbon black according to its purpose.

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