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4 results for “Anthracene”
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Britannica 11th
Encyclopaedia Britannica · 11th edition
Anthracene
Britannica 11thANTHRACENE (from the Greek a»0pa£, coal), C,4H,0, a hydrocarbon obtained from the fraction of the coal-tar distillate boiling between 270° and 400° C. This high boiling fraction is allowed to stand for some days, when it partially solidifies. It is then separa ...
Vol. 2, pp. 105-105
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Anthracite
Britannica 11thANTHRACITE (Gr. avOpat, coal), a term applied to those varieties of coal which do not give off tarry or other hydrocarbon vapours when heated below their point of ignition; or, in other words, which bum with a smokeless and nearly non-luminous flame. Other ter
Vol. 2, pp. 105-105
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Anthozoa
Britannica 11th... th rudimentary septa, and the calicle filled with vesicular endotheca. Genera — ANTHRACENE— ANTHRACITE Cyiliphyllum, Lonsdalc (Silurian and Devonian). GoniophyUum, M. Edw. ami M. (In this Silurian genus the calyx is provided with a movable operculum, consistin ...
Vol. 2, pp. 97-105
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Anthraquinone
Britannica 11thANTHRAQUINONE, CuHsOi, an important derivative of anthracene, first prepared in 1834 by A. Laurent. It is prepared commercially from anthracene by stirring a sludge of anthracene and water in horizontal cylinders with a mixture of sodium bichromate and caustic ...
Vol. 2, pp. 106-106
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