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Think about it. The projector can't go on operating forever when a clock reaches nine, can it? It must need servicing and resetting." "And loading with methyl chloride to squirt at us?" "Too true." Rick had wondered about that. "But how does the chemical squirter work? Where is it? The projector must be close to the Blue Ghost, if the chemical came from the same place." Scotty laughed.
The caustic alkali may also be determined by first using phenolphthalein as an indicator, which will show by its change from pink to colorless the point at which the caustic alkali has been neutralized and the carbonate has been converted to bicarbonate, and then adding methyl orange and completing the titration.
Methyl Violet is a colour we have already referred to, and its chemical structure is still more complex, but it also is built up of aniline materials, and so is a basic aniline colour. Methyl Violet is constructed of aniline or substituted aniline groups; the addition of CH Cl, then, gives us the Methyl Green.
In the course of his investigations, Pabst was led to a very practical method for preparing acetate of methyl, which consists in heating ethyl sulphuric acid to 135 deg. or 140 deg. C, and allowing a mixture of equal molecules of strong alcohol and acetic acid to flow into it. The details of his experiments and the method of purification will be published by the society. By E. PULCHER.
You spray it on the area that hurts, and it evaporates in seconds. You know what that does." Rick did! And suddenly last night's events were perfectly, transparently clear. "Evaporation cools the surface," Rick said for Scotty's benefit. "The faster the evaporation, the faster the cooling. This methyl chloride must act pretty fast." "It does," the druggist agreed.
The intermolecular changes cannot appropriately be discussed here, as they involve a somewhat detailed knowledge of the classification and general behavior of organic compounds; they will, therefore, be merely alluded to, and only the ionic changes followed. Methyl orange is a representative of the group of indicators which, in aqueous solutions, behave as weak bases.
For example, if you want a violet of a very blue shade, and you take Methyl Violet and dissolve it in water and then add Aniline Blue also in solution, you find that precipitation of the colour takes place in flocks. A colouring matter which requires, as some do, to be applied in an acid bath, ought not to be applied simultaneously with one that dyes best in a neutral bath.
Sample IV. On titrating with hydrochloric acid, using phenolphthalein, 15.00 cc. were required. A new sample of the same weight required exactly 30 cc. of the same acid for neutralization, using methyl orange. In the analysis of a sample of KHC H O the following data are obtained: Weight sample = 0.4732 gram. NaOH solution used = 24.97 cc. 3.00 cc.
Agitate distillate with dry potassium carbonate, and draw off some of the supernatant fluid for testing. Tests. Odour. Dissolves camphor. With dilute sulphuric acid and bichromate of potassium turns green, and evolves aldehyde. Product of combustion makes lime-water white and turbid. =Methyl Alcohol: Wood Naphtha.= Used to produce intoxication by painters, furniture-polishers, etc.
I do not wish to make other fellows unhappy. The Point was a favorite spot of Wade's. Many a twilight of last summer, tired with his fagging at the Works to make good the evil of Whiffler's rule, he had lain there on the rocks under the hemlocks, breathing the spicy methyl they poured into the air.
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