coal tar

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Artificial dyes were developed — just as aspirin was — from coal tar, but are now made from petroleum products.
如阿司匹林一样，人工色素是从煤焦油里提取的，但现在以石油产品为原材料。
What Happened: After spending the day studying coal tar derivatives, Fahlberg left his Johns Hopkins laboratory and went to dinner.
经过：在一整天的煤焦油衍生物研究之后，发哈伯格离开了他的约翰·霍普金斯实验室去晚餐。
Macintosh found that naphtha — a volatile, oily liquid created in the distillation the aforementioned coal tar, as well as petroleum — could be used to waterproof fabrics.
麦金托什发现，石脑油——在蒸馏前面提到的煤焦油以及石油的过程中所产生的一种易挥发的油状液体——可用于防水织物。

Medicine salesmen were frequently tarred and feathered or given involuntary cosmetic surgeries when their clients caught up with them when coal tar was used in medicines.
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Originally they were derived from coal-tar, the black viscous waste product left over from distilling coal for gas.
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There is oil aplenty of other sorts (tar sands, liquefied coal and so on), so the stuff is unlikely to run out for a long time yet.
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a sticky, black substance, made from coal, that is used to make various chemical products

Coal tar is a thick, black liquid made from coal which is used for making drugs and chemical products.

煤焦油
1834年第一次从煤焦油中提炼出来，到第一次世界大战前，都一直苯酚的主要来源。
能源科学技术
煤焦油
The effects of preparing conditions of Co-Mo-Pd-Y catalyst series on the light oil yield were investigated in order to improve the light oil yield of coal tar hydrocracking of supercritical gasoline.
为了提高超临界汽油中煤焦油加氢裂化轻质油的收率,研究了Co-Mo-Pd-Y沸石催化剂制备条件对轻质油收率的影响。
交通运输工程
煤沥青