| 单词 | aliphatic |
| 例句 | Short-chain aliphatic compounds are elaborated by female monkeys in response to estradiol, and these are of consuming interest to the males. The Lives of a Cell 1974-01-01T00:00:00Z Hide glue creates joints weaker than wood, which may seem like a disadvantage compared with the stronger-than-wood joints made with yellow, or aliphatic, glue, which is more common in woodworking shops these days. Several ways to repair a broken spindle on an old chair 2020-12-18T05:00:00Z Some hydrocarbons have both aliphatic and aromatic portions; beta-carotene is an example of such a hydrocarbon. Biology for AP Courses 2022-06-09T00:00:00Z The rest is chemically bound with hydrogen in either a grease-like form, known as aliphatic carbon, or as a gaseous version of naphthalene, the main chemical component of mothballs. Space is full of dirty, toxic grease, scientists reveal 2018-06-27T04:00:00Z GLYCOLS, in organic chemistry, the generic name given to the aliphatic dihydric alcohols. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" 2011-10-31T02:00:28.703Z The esters of the aliphatic and aromatic acids are colourless neutral liquids, which are generally insoluble in water, but readily dissolve in alcohol and ether. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 7 "Equation" to "Ethics" 2011-02-27T03:00:31.973Z Carbohydrates are classed as open-chain compounds, that is, they may be regarded as derivatives of the aliphatic hydrocarbons. The Chemistry of Plant Life They are compounds which greatly resemble the mixed ethers of the aliphatic series. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" These observations may be summarized by saying that the benzene nucleus is more negative in character than the aliphatic residues. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" The mixed azo compounds are those in which the azo group �N:N� is united with an aromatic radical on the one hand, and with a radical of the aliphatic series on the other. Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon" But the 'normal' cellulose is not the only cellulose, any more than a primary alcohol or an aliphatic alcohol are the only alcohols. Researches on Cellulose 1895-1900 What are commonly known as "fruity" odors belong mostly to what the chemist calls the fatty or aliphatic series. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries Thus primary alcohols and aldehydes, both of the aliphatic and aromatic series, readily yield on oxidation acids containing the same number of carbon atoms. The Project Gutenberg Encyclopedia Volume 1 of 28 These compounds retain their aliphatic nature, and are best classified with open-chain compounds, into which, in general, they are readily converted. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" These formulae, however, only apply to aliphatic amines; the results obtained in the aromatic series are in accordance with the usual formulae. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" We now proceed to discuss the types of aliphatic compounds; then, the characteristic groupings having been established, an epitome of their derivatives will be given. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" We proceed to consider various simple derivatives of the alcohols, which we may here regard as hydroxy hydrocarbons, R�OH, where R is an alkyl radical, either aliphatic or cyclic in nature. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" Classification.—It is convenient to distinguish between aliphatic and aromatic acids; the first named being derived from open-chain hydrocarbons, the second from ringed hydrocarbon nuclei. The Project Gutenberg Encyclopedia Volume 1 of 28 Reduction, however, converts it into an aliphatic compound. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" In general, the aliphatic residues in such mixed compounds retain the characters of their class, while the aromatic residues retain the properties of benzene. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" Syntheses of the Benzene Ring.—The characteristic distinctions 54 which exist between aliphatic and benzenoid compounds make the transformations of one class into the other especially interesting. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" The fifth compound, on the other hand, does not behave as an unsaturated aliphatic compound, but its deportment is that of a nucleus, many substitution derivatives being capable of synthesis. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" An important oxidation synthesis of aromatic acids is from hydrocarbons with aliphatic side chains; thus toluene, or methylbenzene, yields benzoic acid, the xylenes, or dimethyl-benzene, yield methyl-benzoic acids and phthalic acids. The Project Gutenberg Encyclopedia Volume 1 of 28 The azo-group is particularly active, both the aliphatic and aromatic compounds being coloured. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" This is comparable with the reduction of the benzene nucleus into hexamethylene, a substance of an aliphatic character. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" As before, only true ring nuclei, and not internal anhydrides of aliphatic compounds, will be mentioned. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" |
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