| 单词 | alizarin |
| 例句 | In Britain and Germany, the most prolific consultants were chemists, because of their essential expertise in new products such as acids, soaps, paints and especially synthetic dyes, including mauve and alizarin. Can marketplace science be trusted? 2019-10-21T04:00:00Z Another related ruby dye, used since ancient times, was alizarin, originally isolated from the madder plant. Cochineal Dye Bugs Starbucks Customers 2012-04-05T17:15:00.207Z Its chief use is in the artificial production of alizarin. Webster's Unabridged Dictionary 2012-03-24T02:00:23.513Z Madder was formerly the most important and highly valued of the dye-stuffs of this class, being especially employed to produce the fine 'Turkey-red' dye; but it is now entirely superseded by the coal-tar colour alizarin. The New Gresham Encyclopedia Volume 4, Part 1: Deposition to Eberswalde 2011-04-14T02:00:57.977Z All interpretations of osteological characters are based on specimens cleared in potassium hydroxide and stained with alizarin red. A Review of the Middle American Tree Frogs of the Genus Ptychohyla 2011-02-28T03:00:32.093Z With many colouring matters, e.g. with alizarin, it is necessary to add a small percentage of calcium acetate to the dyebath, and also acetic acid if wool is being dyed. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z Many of the natural glucosides have marked therapeutic properties and are largely used as medicines; others are the mother-substances for brilliant dyes; for example, indican, from which indigo is obtained, and the alizarin glucosides. The Chemistry of Plant Life These chemists isolated two compounds which they named alizarin and purpurin. Coal and What We Get from It The red trousers of the French soldiers are dyed with German alizarin, also a coal-tar product, because it doesn't pay to raise madder any longer. The Scrap Book, Volume 1, No. 3 May 1906 But this indigenous product has been ousted by alizarin, a colouring agent made from coal-tar, which is imported from Germany, and is about thirty per cent cheaper than the native dye. The Tribes and Castes of the Central Provinces of India Volume II Madder contains two closely allied colouring matters, namely, alizarin and purpurin. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z Industrially, it ranks next to indigo and alizarin in importance as a natural dye stuff. The Chemistry of Plant Life During the process of fusion potassium chlorate is added, by which means the yield of alizarin is considerably increased. Coal and What We Get from It Similarly anthracene is used in the preparation of the dye alizarin, which was formerly obtained from the madder root. An Elementary Study of Chemistry The imported alizarin has now almost entirely superseded the indigenous dye, and āl as a commercial product has been driven from the market. The Tribes and Castes of the Central Provinces of India—Volume I (of IV) Brown.—Anthracene brown, chromogen, cloth brown, diamond brown, alizarin brown, fast brown, alizarin acid brown, chrome brown, palatine chrome brown, erio chrome brown. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z This is alizarin, the coloring matter contained in the madder root. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries In addition to alizarin, other anthracene derivatives are of industrial importance. Coal and What We Get from It Potassium dichromate finds use in many industries as an oxidizing agent, especially in the preparation of organic substances, such as the dye alizarin, and in the construction of several varieties of electric batteries. An Elementary Study of Chemistry About ten, either on wool or on silk, may even be accounted really fast, and are fit, apparently, to rank with alizarin colors. Scientific American Supplement, No. 810, July 11, 1891 Alizarin Black is dyed on chromium mordant in the same manner as alizarin, and is used as a self-colour or in combination with other Alizarin Colours. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z This artificial alizarin yields colours which are purer than those of natural madder, and being derived from what was originally regarded as a waste product, its cost of production is considerably cheaper. The Story of a Piece of Coal What It Is, Whence It Comes, and Whither It Goes A sulpho-acid of alizarin has been introduced for wool dyeing under the name of alizarin carmine, and a nitro-alizarin under the name of alizarin orange. Coal and What We Get from It In the meantime, the manufacture of artificial alizarin became extended, and a compound was sold as "alizarin for reds." Scientific American Supplement, No. 286, June 25, 1881 Truer representatives of the natural yellow dyes appear, however, to exist in galloflavin and the alizarin yellows marked A and C, and, as you see, they are of about the same degree of fastness. Scientific American Supplement, No. 810, July 11, 1891 Some, like alizarin, are not in themselves to be regarded as colouring matters, but rather as colouring principles, because they only yield useful dyes in combination with metallic oxides. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z The so-called "alizarin" ink referred to has now become obsolete. Forty Centuries of Ink or, a chronological narrative concerning ink and its backgrounds, introducing incidental observations and deductions, parallels of time and color phenomena, bibliography, chemistry, poetical effusions, citations, anecdotes and curiosa together with some evidence respecting the evanescent character of most inks of to-day and an epitome of chemico-legal ink. By heating alizarin blue with strong sulphuric acid, it is converted into alizarin green. Coal and What We Get from It M. de Lalande has produced it by the oxidation of alizarin. Scientific American Supplement, No. 286, June 25, 1881 Among the red dyes we have alizarin and its numerous allies, and these are certainly fit representatives of the madder root, which indeed they have almost entirely displaced. Scientific American Supplement, No. 810, July 11, 1891 The oil-prepared cotton is steeped in cold solutions of basic aluminium sulphate or acetate, washed, dyed with alizarin, and finally boiled for several hours with soap solution under pressure in order to brighten the colour. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z Log-wood ink marks are mostly reddened by oxalic acid, and alizarin marks become bluish, but aniline inks are unaffected. Forty Centuries of Ink or, a chronological narrative concerning ink and its backgrounds, introducing incidental observations and deductions, parallels of time and color phenomena, bibliography, chemistry, poetical effusions, citations, anecdotes and curiosa together with some evidence respecting the evanescent character of most inks of to-day and an epitome of chemico-legal ink. One of the best refutations is, that two of the oldest and fastest of natural colouring-matters, viz. alizarin and indigo, are coal-tar products. Coal and What We Get from It We call to mind that alizarin dyes reds of a violet tone, free from yellow; roses with a blue cast and beautiful purples. Scientific American Supplement, No. 286, June 25, 1881 The most recent additions to this important class are the various alizarin Bordeaux. Scientific American Supplement, No. 810, July 11, 1891 Alizarin S is a sulphonic acid derivative of alizarin, and since it is much more soluble, it readily yields level colours. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z Springmuhl in 1873 obtained an accessory product in the artificial manufacture of alizarin out of anthracene, from which a beautiful blue was made, superior in many respect to the aniline blues. Forty Centuries of Ink or, a chronological narrative concerning ink and its backgrounds, introducing incidental observations and deductions, parallels of time and color phenomena, bibliography, chemistry, poetical effusions, citations, anecdotes and curiosa together with some evidence respecting the evanescent character of most inks of to-day and an epitome of chemico-legal ink. A dihydroxyl derivative of one of the latter is in use under the somewhat misappropriate name of “alizarin black.” Coal and What We Get from It Rosenstiehl has shown that alumina mordants are properly saturated if two equivalents of lime are used for each equivalent of alizarin, if the dyeing is done without oil. Scientific American Supplement, No. 286, June 25, 1881 Members of the rosaniline group are all similarly fugitive, while those of the alizarin group possess generally the quality of fastness. Scientific American Supplement, No. 810, July 11, 1891 On wool, the colour is so extremely fast to light and to milling that it may well serve as a substitute for alizarin. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z Mr. Davids made many experiments with "alizarin" inks in the early sixties but did not consider them valuable enough to put on the market. Forty Centuries of Ink or, a chronological narrative concerning ink and its backgrounds, introducing incidental observations and deductions, parallels of time and color phenomena, bibliography, chemistry, poetical effusions, citations, anecdotes and curiosa together with some evidence respecting the evanescent character of most inks of to-day and an epitome of chemico-legal ink. The quinone is purified, converted into a sulpho-acid, and the sodium salt of the latter on fusion with alkali gives alizarin, which is dihydroxy-anthraquinone. Coal and What We Get from It The method of subjecting reds got up with alizarin to the same treatment as madder-reds was faulty. Scientific American Supplement, No. 286, June 25, 1881 The only dyes in this group which appear somewhat behind the rest in point of fastness are purpurin and alizarin maroon. Scientific American Supplement, No. 810, July 11, 1891 Alizarin Orange is employed in the same manner as alizarin. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z With hydrochloric acid, logwood ink marks turn reddish or reddish-gray, alizarin marks greenish, and aniline ink marks reddish or brownish-gray. Forty Centuries of Ink or, a chronological narrative concerning ink and its backgrounds, introducing incidental observations and deductions, parallels of time and color phenomena, bibliography, chemistry, poetical effusions, citations, anecdotes and curiosa together with some evidence respecting the evanescent character of most inks of to-day and an epitome of chemico-legal ink. The latter on heating with glycerin and sulphuric acid is transformed into a remarkably fast colouring-matter known as alizarin blue, which is used for dyeing and printing. Coal and What We Get from It Dye for an hour at 70°, and half an hour longer at the same heat, using for 100 kilos of cloth or yarn 20 kilos alizarin at 10 per cent., Scientific American Supplement, No. 286, June 25, 1881 Since, however, they yield fast colors with other useful mordants, and upon other fibers than wool, these alizarin colors prove of the greatest value to the dyer of textile fabrics generally. Scientific American Supplement, No. 810, July 11, 1891 It is applied in the same manner as alizarin, the chromium mordant being alone employed. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z Alizarin Cyanine, Anthracene Blue and Brilliant Alizarin Blue were discovered later than the above-mentioned alizarin blues, and, owing to their greater solubility and other advantages, they have largely replaced them as substitutes for indigo. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z One pound of dry alizarin has the tinctorial power of 90 pounds of madder. Coal and What We Get from It As the dye-bath becomes exhausted, it must be recruited from time to time with fresh quantities of alizarin. Scientific American Supplement, No. 286, June 25, 1881 The fastness of the dyed colours to light, and general durability, are very satisfactory, but in fastness to milling and acids they are to some extent inferior to alizarin blue. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z |
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