Pure black or powder-fine. Do not dissolve in water, acid and alkali. The air in the combustion. Its main ingredient is elemental carbon, but also contains a small amount of hydrogen, oxygen, sulfur and ash.
     Preparation methods : carbon black is the oldest one of the industrial products. In ancient China used vegetable oil incomplete combustion of carbon black pigments from the system. In 1872, the United States first to use natural gas as raw material production trough of carbon black, used primarily as coloring agents. 1912 Mott found carbon reinforcement of the role of rubber, carbon black industries can be developed rapidly and have developed a variety of techniques method. At present, the oil-fired furnace is the most efficient, cost-effective the best way to the black-Oil production accounts for the total carbon 70-90%. Major Furnace, chutes, hot crack Act three