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19-Dec-2019 10:40

In an electric arc, PCBs generate incombustible gases.

Use of PCBs is commonly divided into closed and open applications.

hydraulic fluids, lubricating and cutting oils, and the like.

In contrast, the major open application of PCBs was in carbonless copy ("NCR") paper, which even presently results in paper contamination.

In general, the first two digits refer to the number of carbon atoms in the biphenyl skeleton (for PCBs this is 12); the second two numbers indicate the percentage of chlorine by mass in the mixture.There are 209 different chemical compounds in which one to ten chlorine atoms can replace hydrogen atoms.PCBs are typically used as mixtures of compounds and are given the single identifying CAS number 1336-36-3 .Thus, Aroclor 1260 has 12 carbon atoms and contains 60% chlorine by mass.An exception is Aroclor 1016, which also has 12 carbon atoms, but has 42% chlorine by mass.

In general, the first two digits refer to the number of carbon atoms in the biphenyl skeleton (for PCBs this is 12); the second two numbers indicate the percentage of chlorine by mass in the mixture.

There are 209 different chemical compounds in which one to ten chlorine atoms can replace hydrogen atoms.

PCBs are typically used as mixtures of compounds and are given the single identifying CAS number 1336-36-3 .

Thus, Aroclor 1260 has 12 carbon atoms and contains 60% chlorine by mass.

An exception is Aroclor 1016, which also has 12 carbon atoms, but has 42% chlorine by mass.

The United States was the single largest producer with over 600,000 tons produced between 19.