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soot,black or dull brown deposit of fine powder resulting from incomplete combustion of fuel of high carbon content, e.g., coal, wood, and oil. It consists chiefly of amorphous carbon and tarry substances that cause it to adhere to surfaces. Soot obtained from coal also contains sulfur and ammonia. See carbon blackcarbon black,
mixture of partially burned hydrocarbons. Carbon black is produced by partial combustion of natural gas. It is used as a black pigment for inks and paints, and is used in large amounts by the tire industry in the production of vulcanized rubber.
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Impure black carbon with oily compounds obtained from the incomplete combustion of resinous materials, oils, wood, or coal.
finely divided carbon deposited from flames during the incomplete combustion of organic substances such as coal