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8 results for “Ethylene”
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Britannica 11th
Encyclopaedia Britannica · 11th edition
Ethylene
Britannica 11thETHYLENE, or ETHENE, C2H<, or H2C:CH3, the first representative of the series of olefine hydrocarbons, is found in coal gas. It is usually prepared by healing a mixture of ethyl alcohol and sulphuric acid. G. S. Newth (Jour. Chem. Soc., 1901, 79, p. 915) obtai ...
Ethyl
Britannica 11thETHYL, in chemistry, the name given to the alkyl radical CjHj. The compounds containing this radical are treated under other headings; the hydride is better known as ethane, the alcohol, CjHsOH, is the ordinary alcohol of commerce, and the oxide (CjH6)jO is or
Anthracene
Britannica 11th... minium chloride: — Br-CH Br C.H.+ I +C4H.=4HBr+C4H Br-CH-Br and similarly from methylene dibromide and benzene, and also when benzyl chloride is heated with aluminium chloride to 200° C. By condensing ortho-brombenzyl bromide with sodium, C. L. Jackson and J. ...
Ether
Britannica 11th... onate before the application of the test. When heated with zinc dust, it yields ethylene and water. Chromic acid oxidizes it to acetic acid and ozone oxidizes it to ethyl peroxide. In contact with hydriodic acid gas at o°C., it forms ethyl iodide (R. D. Silva, ...
Ethnology And Ethnography
Britannica 11th... rica and India and separating two distinct marine zoological provinces." ETHYL— ETHYLENE which it is most reasonable broadly to divide mankind they may be analysed as to their racial constituents and their habitats as follows: — 1. Caucasic or White Man is bes ...
Sugar
Britannica 11th... 861 Butlerow obtained a sugar-like substance, methylenitan, by digesting trioxymethylene, the solid polymer of formaldehyde, with lime. The work was repeated by O. Loew, who prepared in 1885 a sweet, unfermentable syrup, which he named formose, CeHiiOt and, la ...
Thiazines
Britannica 11th... class III., thiodiphenylamine, CtH*^ yCtHt, being the parent substance of the methylene blue series of dyestuffs. Thiodiphenylamine THIAZOLES— THIBAUT IV. miaire (5th October 1795) he opposed those Thennidorians who wished to postpone the dissolution of the C ...
Thiophen
Britannica 11th... istillate is finally rectified. It may be obtained in small quantity by passing ethylene or acetylene into boiling sulphur; by passing ethyl sulphide through a red-hot tube; by heating crotonic acid, butyric acid or erythrite with phosphorus pen tasulp hide; b ...