| 单词 | gallic acid |
| 例句 | It contains gallic acid and tannin, and is used for dyeing drab. Webster's Unabridged Dictionary (2nd 100 Pages) 2012-03-24T02:00:19.387Z In my experience ergot in combination with gallic acid and dilute sulphuric acid has been very efficient. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z Chemists have extracted from it an astringent liquor containing tannin and gallic acid. Curiosities of Medical Experience 2012-03-09T03:00:20.410Z Mr. Claudet sends some good pictures enlarged by solar camera, and developed with gallic acid. The Evolution of Photography With a Chronological Record of Discoveries, Inventions, etc., Contributions to Photographic Literature, and Personal Reminescences Extending over Forty Years 2012-02-15T03:00:30.577Z Gall′ate, a salt of gallic acid; Gall′fly, an insect which occasions gall on plants by puncturing.—adj. Chambers's Twentieth Century Dictionary (part 2 of 4: E-M) 2012-01-11T03:00:23.770Z Solution of calcium bicarbonate becomes with gallic acid, on exposure to the air, of a dark blue colour. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" 2011-08-24T02:00:20.690Z Consequently, while ergot, turpentine, gallic acid, and other like remedies may be resorted to, too much hope should not be entertained as to their good effects. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z Other remedies have gradually lost favor in the hands of those who have had most experience with the symptom and gallic acid and supra-renal extract, the older and newer remedy, are now little depended on. Psychotherapy 2011-06-19T02:00:20.053Z In this state, also, the infusion of galls or gallic acid is, as we all know, most decided and instantaneous, and so I found it to be in my early experiments. The Evolution of Photography With a Chronological Record of Discoveries, Inventions, etc., Contributions to Photographic Literature, and Personal Reminescences Extending over Forty Years 2012-02-15T03:00:30.577Z I always plunge the bottle of gallic acid solution into hot water when first made, which enables it to take up more of the acid; on cooling, the excess crystallises at the bottom. Notes and Queries, Number 229, March 18, 1854 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc Unlike tannic acid, gallic acid does not precipitate albumen or salts of the alkaloids, or, except when mixed with gum, gelatin. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" 2011-08-24T02:00:20.690Z It is prepared by heating gallic acid with benzoic and sulphuric acids, or with phthalic anhydride and zinc chloride, and is a brown dye known as “anthragallol” or “anthracene-brown.” Coal and What We Get from It They include the extraction of gallic acid from chestnut-bark, the preparation of preserved citrons and other delicacies, and of macaroni and similar foods and the manufacture of fancy goods and cigars. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 4 "Coquelin" to "Costume" Very probably also the development by gallic acid and acetate of lead developer may furnish better results than the plain pyro. The Evolution of Photography With a Chronological Record of Discoveries, Inventions, etc., Contributions to Photographic Literature, and Personal Reminescences Extending over Forty Years 2012-02-15T03:00:30.577Z I excite my paper with equal proportions of saturated solution of gallic acid and aceto-nitrate of silver, one or two drops of each to the drachm of distilled water. Notes and Queries, Number 229, March 18, 1854 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc Medicinally, gallic acid has been, and is still, largely used as an astringent, styptic and haemostatic. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" 2011-08-24T02:00:20.690Z The phthaleïn formed from gallic acid and phthalic anhydride really results from the union of the latter with pyrogallol. Coal and What We Get from It I add only, if I have any dissolved, 1 or 2 grammes of camphorated spirits to 1 litre of the solution of gallic acid. Notes and Queries, Number 234, April 22, 1854 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc. If the weather is warm, 6 drops of gallic acid to the 10 of aceto-nitrate will suffice, and enable the prepared excited paper to be kept longer. Notes and Queries, Number 216, December 17, 1853 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc A drench of 1½ drams of gallic acid dissolved in a pint of water should be given. Special Report on Diseases of Cattle Then take three parts of a concentrated solution of gallic acid, and one part of a nitrate of silver solution, 60 grains to the ounce of water; mix together, and pour on the plate. Notes and Queries, Number 217, December 24, 1853 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc. But although pyrogallol is a benzene derivative, and could if necessary be prepared synthetically, it can hardly be claimed as a tar product, as it is generally made from gallic acid. Coal and What We Get from It Sir W. Newton, in the description of his calotype process, says: "Bring out with the saturated solution of gallic acid, and when the subject begins to appear, add the aceto-nitrate of silver solution." Notes and Queries, Number 192, July 2, 1853 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc A � of an ounce of gallic acid put into such a 3-ounce bottle, and quite filled up with distilled water as often as any is used, will serve a very long time. Notes and Queries, Number 216, December 17, 1853 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc The picture may be developed by a solution of gallic acid mixed with a very small quantity of an aqueous solution of acetic acid and nitrate of silver. Harper's Young People, December 2, 1879 An Illustrated Weekly Inky black colour or precipitate = gallic acid or tannic acid. The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged. A weak solution of iodide of iron has also the same effect, and, if blotted off at once, it will not blacken by the use of gallic acid. Notes and Queries, Number 203, September 17, 1853 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc. Which way of doing this is the best,—mixing the two solutions together and applying them to the paper; or applying the paper, when wetted with the gallic acid, to the silver solution? Notes and Queries, Number 192, July 2, 1853 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc The pictures should be developed by equal quantities of the aceto-nitrate of silver and the saturated solution of gallic acid, which are to be mixed and immediately applied to the exposed surface. Notes and Queries, Number 216, December 17, 1853 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc The condition of vessels when the iron work becomes loose in the timbers from corrosion by gallic acid, and the speeks or sheathing nails are eaten away by rust. The Sailor's Word-Book An Alphabetical Digest of Nautical Terms, including Some More Especially Military and Scientific, but Useful to Seamen; as well as Archaisms of Early Voyagers, etc. Ergot, belladonna, gallic acid, mineral acids, and tonics. Essentials of Diseases of the Skin Including the Syphilodermata Arranged in the Form of Questions and Answers Prepared Especially for Students of Medicine I replace then the water by solution of gallic acid or of tannin and the image progressively appears in ink-black. Photographic Reproduction Processes Yes; but principally gallic acid, but gallic acid will also tan the skins so as to make leather. The Wonder Island Boys: Exploring the Island The paper was prepared with the single iodide of silver solution, and rendered sensitive with aceto-nitrate sil. and gallic acid in the usual way. Notes and Queries, Number 185, May 14, 1853 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc. The peel furnishes hesperidin, a volatile oil, gallic acid, and a bitter principle. Herbal Simples Approved for Modern Uses of Cure To the concentrated, and nearly neutral, solution a freshly-prepared solution of gallic acid is added in slight excess. A Text-book of Assaying: For the Use of Those Connected with Mines. Expose and develop on a saturated solution of gallic acid. Photographic Reproduction Processes Nut-galls contain a large quantity of tannin and gallic acid, and are extensively used in dyeing. French Polishing and Enamelling A Practical Work of Instruction For bleeding: rest, ice, tannic or gallic acid or adrenalin locally if the bleeding points can be reached. Mother's Remedies Over One Thousand Tried and Tested Remedies from Mothers of the United States and Canada Chemically, most of the Spurges contain caoutchouc, resin, gallic acid, and their particular acrid principle which has not been fully defined. Herbal Simples Approved for Modern Uses of Cure Bichromate prints can be made on albumenized paper by floating it on the solution, and by using a saturated solution of protosulphate of iron and a saturated solution of gallic acid. Scientific American Supplement, No. 483, April 4, 1885 If gallic acid be used instead of pyrogallol, the tone is black. Photographic Reproduction Processes A substance called "gallic acid" resides in the oak; and when the puncture is made by the cynips, it flows in great abundance to the wound. Among the Trees at Elmridge Its astringent property is due to the tannic and gallic acid it contains. Mother's Remedies Over One Thousand Tried and Tested Remedies from Mothers of the United States and Canada Chemically, the Apple is composed of vegetable fibre, albumen, sugar, gum, chlorophyll, malic acid, gallic acid, lime, and much water. Herbal Simples Approved for Modern Uses of Cure Most, if not all, the usual black colours have iron for a basis, the black oxide of which is developed by galls, logwood, or other substances containing gallic acid. The Mirror of Literature, Amusement, and Instruction Volume 14, No. 406, December 26, 1829 Solutions of gallic acid, tannic acid with alkalies of carbonate, may also be employed to modify or change the color. Photographic Reproduction Processes Its exports include timber, citrons, skins, chestnuts and gallic acid. The Project Gutenberg Encyclopedia Volume 1 of 28 In practice it is found better and more economical not to mix the nitrate of silver and gallic acid, but only to brush the paper with the solution of the nitrate. History and Practice of the Art of Photography The first investigations of gall-tannin date from the year 1770, at which time, however, no exact differentiation between tannin and gallic acid was made. Synthetic Tannins Our own water-lily is rather more powerful in its uses; the root contains tannin and gallic acid, and a decoction of it "gives a black precipitate, with sulphate of iron." The Atlantic Monthly, Volume 02, No. 11, September, 1858 The conversion of alcohol into vinegar in the process of acetification and the production of gallic acid by the action of fungi on wet gall nuts, are already connected with this kind of phenomena. The Harvard Classics Volume 38 Scientific Papers (Physiology, Medicine, Surgery, Geology) Determination of the correct proportions of gallic acid and ferrous-sulphate was the subject of prolonged experiments conducted on similar lines to those already detailed. 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. Here again the mixed solution need not be used, but the picture simply brushed over with the gallic acid. History and Practice of the Art of Photography Their basic idea was the absence of carboxylic groups in tannin, and that hence the total gallic acid must be present in ester form. Synthetic Tannins It is also well not to make much of the gallic acid solution, as it will not keep for more than a few days without spoiling. History and Practice of the Art of Photography Now, make a solution of gallic acid in cold distilled water: the quantity dissolved is very small. History and Practice of the Art of Photography With gallic acid and the ferrocyanate of potash it forms two of the most sensitive photographic solutions with which we are acquainted. History and Practice of the Art of Photography The paper is first iodized in the usual way; it is then washed over with a saturated solution of gallic acid in distilled water and dried. History and Practice of the Art of Photography |
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