The Encyclopedia Americana, Volume 7Grolier, 1985 - Encyclopedias and dictionaries |
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Page 144
... COAL TAR is a heavy , dark viscous liquid obtained from the destructive distillation , or carbonization , of coal . The primary product of the carboniza- tion of coal is coke , while the secondary prod- ucts are coal tar , light oil ...
... COAL TAR is a heavy , dark viscous liquid obtained from the destructive distillation , or carbonization , of coal . The primary product of the carboniza- tion of coal is coke , while the secondary prod- ucts are coal tar , light oil ...
Page 145
... coal tar pitches has in- creased tremendously in recent years because of the growing number of useful chemicals recov- ered and derived from them . However , the single most important use of coal tar pitch itself in the United States is ...
... coal tar pitches has in- creased tremendously in recent years because of the growing number of useful chemicals recov- ered and derived from them . However , the single most important use of coal tar pitch itself in the United States is ...
Page 215
... Coal tar , which is the source of a great num- ber of chemical compounds , including creosote , pitch , toluene , and naphthalene , is extracted from the stream of gases evolved during coking . This is done by means of water spray ...
... Coal tar , which is the source of a great num- ber of chemical compounds , including creosote , pitch , toluene , and naphthalene , is extracted from the stream of gases evolved during coking . This is done by means of water spray ...
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