Dehydrating Sentence Examples
The olefines may be synthetically prepared by eliminating water from the alcohols of the general formula CnH2n+1 OH, using sulphuric acid or zinc chloride generally as the dehydrating agent, although phosphorus pentoxide, syrupy phosphoric acid and anhydrous oxalic acid may frequently be substituted.
Fittig and his pupils (Annalen, 1883, 216, pp. loo, 115; 1885, 227, pp. 55, 119), in which it was shown that the aldehyde forms an addition compound with the sodium salt of the fatty acid, and that the acetic anhydride plays the part of a dehydrating agent.
The -y-diketones are characterized by the readiness with which they yield furfurane, pyrrol and thiophene derivatives, the furfurane derivatives being formed by heating the ketones with a dehydrating agent, the thiophenes, by heating with phosphorus pentasulphide, and the pyrrols by the action of alcoholic ammonia or amines.
Bamberger (Ber., 18 94, 27, p. 9 1 4) obtained the diazoic acids, R NH NO 2, substances which he had previously prepared by similarly oxidizing the diazonium salts, by dehydrating the nitrates of primary amines with acetic anhydride, and by the action of nitric anhydride on the primary amines.
It condenses with acids or acid chlorides, in the presence of dehydrating agents, to oxyketones, e.g.Advertisement
Its powerful affinity for the elements of water makes it a valuable dehydrating and condensation agent.
For external use, sulphuric acid is a powerful irritant and caustic, acting by its powerful affinity for water and therefore dehydrating the tissues and causing them to turn black.
Water soluble lubricating gels can moisten the lips without the dehydrating effects of glycerol and paraffin based products.
Licking our lips only aggravates this dehydrating process as the salvia evaporates quickly, leaving the lips even more parched then before.
Insecticidal soaps work by dehydrating soft-bodied insects.Advertisement
Using cedar or oak bark or gravel chips also makes a dehydrating environment that slugs don't like.
Medications containing alcohol, however, should be avoided because of the dehydrating effects of alcohol.
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Drink plenty of water and opt for lukewarm over hot showers and baths to avoid further dehydrating the skin.
By the action of dehydrating agents they are converted into aldehydes or ketones.Advertisement
This water cannot be entirely removed by fractional distillation, and to prepare anhydrous or "absolute" alcohol the commercial product must be allowed to stand over some dehydrating agent, such as caustic lime, baryta, anhydrous copper sulphate, &c., and then distilled.