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Although the products of destructive distillation vary within wide
limits, yet the following table may serve to give an approximate idea of
what may be got from a ton of soft coal:
1 ton of coal may give
Gas, 12,000 cubic feet
Liquor (Washings) ammonium sulfate (7-25 pounds)
Tar (120 pounds) benzene (10-20 pounds)
toluene (3 pounds)
xylene (1-1/2 pounds)
phenol (1/2 pound)
naphthalene (3/8 pound)
anthracene (1/4 pound)
pitch (80 pounds)
Coke (1200-1500 pounds)
When the tar is redistilled we get, among other things, the ten "crudes"
which are fundamental material for making dyes. Their names are:
benzene, toluene, xylene, phenol, cresol, naphthalene, anthracene,
methyl anthracene, phenanthrene and carbazol.
There! I had to introduce you to the whole receiving line, but now that
that ceremony is over we are at liberty to do as we do at a reception,
meet our old friends, get acquainted with one or two more and turn our
backs on the rest.


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