Carbon black (subtypes are acetylene black, channel black, furnace black, lamp black and thermal black) is a material produced by the incomplete combustion of heavy petroleum products such as FCC tar, coal tar, ethylene cracking tar, with the addition of a small amount of vegetable oil.[citation needed] Carbon black is a form of paracrystalline carbon that has a high surface-area-to-volume ratio, albeit lower than that of activated carbon. It is dissimilar to soot in its much higher surface-area-to-volume ratio and significantly lower (negligible and non-bioavailable) PAH (polycyclic aromatic hydrocarbon) content. However, carbon black is widely used as a model compound for diesel soot for diesel oxidation experiments.Carbon black is mainly used as a reinforcing filler in tires and other rubber products. In plastics, paints, and inks, carbon black is used as a color pigment.
Common uses
The most common use (70%) of carbon black is as a pigment and reinforcing phase in automobile tires. Carbon black also helps conduct heat away from the tread and belt area of the tire, reducing thermal damage and increasing tire life. About 20% of world production goes into belts, hoses, and other non-tire rubber goods. The balance is mainly used as a pigment in inks, coatings and plastics.
The Canadian Government's extensive review of carbon black in 2011 concluded that carbon black should continue to be used in products – including food packaging for consumers – in Canada. This was because "in most consumer products carbon black is bound in a matrix and unavailable for exposure, for example as a pigment in plastics and rubbers" and "it is proposed that carbon black is not entering the environment in a quantity or concentrations or under conditions that constitute or may constitute a danger in Canada to human life or health."
Surface chemistry
All carbon blacks have chemisorbed oxygen complexes (i.e., carboxylic, quinonic, lactonic, phenolic groups and others) on their surfaces to varying degrees depending on the conditions of manufacture. These surface oxygen groups are collectively referred to as volatile content. It is also known to be a non-conductive material due to its volatile content.
Safety
Carcinogenicity
Carbon black is considered possibly carcinogenic to humans and classified as a Group 2B carcinogen because there is sufficient evidence in experimental animals with inadequate evidence in human epidemiological studies.Newer findings of increased lung cancer mortality in an update from the UK study suggest that carbon black could be a late-stage carcinogen.
Occupational safety
There are strict guidelines available and in place to ensure employees who manufacture carbon black are not at risk of inhaling unsafe doses of carbon black in its raw form.[18] Respiratory personal protective equipment is recommended to properly protect workers from inhalation of carbon black. The recommended type of respiratory protection varies depending on the concentration of carbon black used.
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Xingtai Landi Trading Co. Ltd was founded in 2003. Located in Xingtai,Hebei. Our company has been engaged in the import and export of raw materials for many years.We have passed ISO9001 national quality management system certification.
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