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Example sentences for "gallic acid"

  • Tannin is precipitated in the stomach as an inert tannate; gallic acid is to be preferred for this reason, and also for its pleasant taste and less irritating effect on the mucous membrane.

  • Mr. William Crookes has shown, that when a saturated solution of gallic acid is required in large quantities, that it is better to dissolve at once two ounces of gallic acid in six ounces of alcohol (60 deg.

  • Gallic acid, he feels assured, does not produce any notable effects in the process; but he thinks that the quality of the leather depends, in some degree, upon the quantity of extractive matter it may imbibe.

  • The vegetable principles that had been regarded as more usually present in astringent infusions, are tannin, gallic acid, and extractive matter.

  • In this case the liquor will appear in the course of a few weeks as if traversed with numerous crystalline colourless needles of gallic acid.

  • If a tannin infusion be largely diluted with hard water and a little iodine solution added, the pyrogallol tans yield either a purple-red or a dark blue colour, the former being a reaction of gallic acid.

  • The reaction is due to gallic acid or a similar grouping, and is, in the author's experience, the most satisfactory qualitative test for the group.

  • They yield no bloom or gallic acid, but have associated with this other characteristic substances.

  • To conclude this subject, I have only to add a few words on the gallic acid.

  • Common writing ink is a precipitate of sulphat of iron by gallic acid; the black colour is owing to the formation of gallat of iron, which being insoluble, remains suspended in the fluid.

  • Tannic Acid, which is equivalent in composition to a combination of Gallic Acid with a saccharine matter, is a valuable external Astringent.

  • Braconnot, that Tannic is a compound acid consisting of Gallic Acid in combination with the elements of grape-sugar.

  • And as the Tannic Acid loses weight by the decomposition, it follows that a dose of Gallic Acid produces a greater effect as a medicine than an equal amount of the other.

  • Tannic Acid, Gallic Acid, and Creosote are the three chief Vegetable Astringents.

  • In British pharmacy gall-nuts are used in the preparation of the two astringent ointments unguentum gallae and unguentum gallae cum opio, and of the tinctura gallae, and also as a source of tannin and of gallic acid (q.

  • Gallic acid is most readily obtained by boiling the tannin procured from oak-galls by means of alcohol and ether with weak solution of acids.

  • Gallic acid, however, does not coagulate albumen and therefore possesses no local astringent action.

  • Feist's preparation which were so great that the latter no longer could be considered a single glucoside of gallic acid.

  • Pour it on and off the plate to well permeate the film, then set the plate up to drain, and dry without washing off the gallic acid solution.

  • A strong solution of gallic acid in spirit of roses.

  • Let the plate dry; when perfectly dry, moisten the plate with distilled water, and pour over the following solution: Gallic acid 2 gr.

  • But, if required, the negative picture can be readily changed into a positive one, by converting the darkened silver into white metallic silver, by a mixture of protosulphate of iron and pyro-gallic acid.

  • The image is latent, until it is developed by pouring over the plate a mixture of pyro-gallic acid in distilled water, acetic acid, and nitrate of silver.

  • What is generally termed a saturated solution of gallic acid is, I am led to believe, nothing of the kind.

  • With regard to the sensitizing by nitrate of silver, the bringing out of the image under the action of gallic acid, and fixing the proof by hyposulphite of soda, I follow the usual methods, most frequently that of Mr. Le Gray.

  • I add only, if I have any dissolved, 1 or 2 grammes of camphorated spirits to 1 litre of the solution of gallic acid.

  • At the same time, it preserves the lights and the half-tones in a way that surprises me upon each new trial (I have not yet been able to obtain one clear proof by gallic acid, with the addition of nitrate of silver).

  • Now, make a solution of gallic acid in cold distilled water: the quantity dissolved is very small.

  • 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.

  • As soon as the picture appears, in about a minute, pour on a saturated solution of gallic acid abundantly, and keep it from pooling with the brush, using it with a very light hand.


  • The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "gallic acid" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.


    Some common collocations, pairs and triplets of words:
    class rule; colored paper; dark lantern; dinner given; full assembly; gallic acid; good flavor; great prosperity; haired priest; immediate experience; infinitely divisible; intensely bitter; like teeth; other lives; really only; shall return every man unto his; silver bell; superstructure icing; terra regis; wheeled cart; why didn; young wife