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RE: Almost all the shade of black is derived from coke ergo heated coal which changes it's chemical structure...

The dye is what is known as an azo (N=N) compound. In the past, the analine and nitrobenzene starting materials would have been obtained from the byproducts of steel making coke manufacture. I expect that petroleum is currently used, as the starting point.


Eli D.

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  • RE: Almost all the shade of black is derived from coke ergo heated coal which changes it's chemical structure... - Eli Duttman 05:23:10 03/08/17 (0)
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