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17 results for “Ethyl”
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Britannica 11th
Encyclopaedia Britannica · 11th edition
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 ...
Ethyl Chloride
Britannica 11thETHYL CHLORIDE, or HYDROCHLORIC ETHER, C2H,C1, a chemical compound prepared by passing dry hydrochloric acid gas into absolute alcohol. It is a colourless liquid with a sweetish burning taste and an agreeable odour. It is extremely volatile, boiling at 12-5° C ...
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 ...
Thymol
Britannica 11thTHYMOL, C10H140 or CeHstOH) (CH3) (C3H7) [1:3:6], a methylisopropylphenol isomeric with carvacrol (q.v.), is an aromatic substance found with the hydrocarbons cymene, Ci0H,4, and thymene, CioH16, in oil of thyme (from Thymus vulgaris) and in other essential oi ...
Aniline
Britannica 11th... ne, and is obtained from the distillate (tchappts) of the fuchsine fusion. Monomethyl and dimethyl aniline are colourless liquids prepared by heating aniline, aniline hydrochloride and methyl alcohol in an autoclave at 220°. They are of great importance in the ...
Anise
Britannica 11th... up to 90 %) is ancthol, CwH.jO or C.H4[i-4)(OCH,)(CH:CH-CH,.) It also contains methyl chavicol, anisic aldehyde, anisic acid, and a terpene. Most of the oil of commerce, however, of which anethol is also the chief constituent , comes from Illidum verum (order ...
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. ...
Arsenic
Britannica 11th... i),, do not exist, although the corresponding chlorine derivatives, AsClj-CHj, methyl arsine chloride, and AsCl(CH,)i, dimethyl arsine chloride, are known. The tertiary arsines, such as As(CH»)i, trimethyl arsine, and the quaternary arsonium iodides and hydrox ...
Electricity
Britannica 11th... a study of the subject and discovered that a solution of ferric perchloride in methyl alcohol rotated the plane of polarisation in an opposite direction to heavy glass MUM. CUM. M|J*, 1854, 4>, P- 37°; 1855, 43, P- 37! C0m. Rend., 1854, 39, p. 548). Later A. A ...
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, ...
Ethers
Britannica 11th... n (Ann., 1831, 77, P38; 1852, 81, p. 77) prepared ether by the action of sodium ethylate on ethyl iodide, and showed that all ethers must possess the structural formula given above (see also Brit. Assoc. Reports, 1850, p. 65). They may also be prepared by heat ...
Ethnology And Ethnography
Britannica 11th... outh Africa 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 ...
Sugar
Britannica 11th... reduction; it was found that glucose yielded normal heptylic acid and fructose methylbutylacetic acid; hence glucose is an aldehyde alcohol, CH2OH-(CH-OH)4-CHO, whilst fructose is a ketone alcohol CH2OH- (CH-OH),-CO-CH2OH.2 Kiliani also showed that arabinose, ...
Tar
Britannica 11th... of products, including gas, tar, pyroligneous acid, acetone, wood spirit (see METHYL ALCOHOL) and charcoal may be obtained, and any of these may be the primary object of the operation. The carbonization of wood can be effected in two ways: (i) by stacking and ...
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 ...
Valeric Acid
Britannica 11th... sovaleric acid or isopropylaceticacid, (CH3)2CH-CH2-CO2H, and optically active methylethylacetic acid, (CH3) (C2H6)CH-CO2H, which occur free or as esters in the vegetable and animal kingdoms, chiefly in the roots of Angelica archangelica and Valeriana officina ...