But soon potatoes got too scarce to be used up in this fashion, so the Germans turned to calcium carbide as a source of acetone and before the war ended they had a factory capable of manufacturing 2000 tons of methyl rubber a year.
From acetone also is made the "war rubber" of the Germans (methyl rubber), which I have mentioned in a previous chapter.
In the latter part of the war the methyl rubber was manufactured at the rate of 165 tons a month.
The new form of rubber made by the Germans, methyl rubber, is said to be a superior substitute for the hard variety but not satisfactory for the soft.
Treating the odorless solid with methyl alcohol we get audepine (or anisic aldehyde) which is the perfume of hawthorn blossoms.
Add to this methyl alcohol which is obtained by the destructive distillation of wood and is much more poisonous than ordinary ethyl alcohol.
Acetic ether, methyl alcohol, acetone and glacial acetic acid, will also dissolve these nitrates.
This hexa-nitrate is insoluble in ether, alcohol, or in a mixture of those solvents, likewise in glacial acetic acid or in methyl alcohol.
Like Methyl Alcohol, it burns without smoke and with great heat, [Footnote: Pour a little alcohol into a saucer and apply an ignited match.
Thus Methyl Alcohol is obtained from the decomposition of hard wood when exposed to intense heat with little or no oxygen present.
An acid indicator of medium strength is methyl orange.
The methyl alcohol is added to prevent the precipitated chloride of sodium from coating the insoluble hydrochloric salt of hydroxylamine.
Both oils consist almost entirely of methyl salicylate and are practically identical in properties, the chief difference being that the former has a slight lævo-rotation, while the latter is inactive.
Alkalinity, which is usually sodium carbonate, and may be somewhat considerable if the soap has been grained with caustic alkali, is determined after dilution with water by titrating with N/2 acid, using methyl orange as indicator.
The residue on the filter paper from the above determination is washed with hot water, and the aqueous filtrate titrated with N/10 acid, using methyl orange as indicator.
Among its constituents are benzyl acetate, linalyl acetate, benzyl alcohol, indol, methyl anthranilate, and a ketone jasmone.
Besides methyl salicylate, the oil contains triaconitane, an aldehyde or ketone, and an alcohol.
The oil consists almost entirely of linalol, with traces of saponifiable bodies, but appears to be free from methyl heptenone, found by Barbier and Bouveault in Mexican linaloe oil.
These consist chiefly of linalol, geraniol, linalyl acetate, methyl anthranilate, and citral.
N/1 acid, to methyl orange, and the result expressed in terms of Na{2}O.
Total alkali is estimated by dissolving 2 grammes in distilled water, and titrating when cold, with N/1 acid, using methyl orange as indicator.
This oil consists mainly of linalol, together with small quantities of methyl heptenone, geraniol, and d-terpineol.
For reddish violet dissolve in a similar quantity of waterMethyl Violet BR.
Now add about ten volumes of petroleum spirit and an equal volume of methyl alcohol, stir up well, transfer to a separatory funnel and allow the two layers to separate.
Both the glucoside itself and the methyl salicylate ("oil of wintergreen") which is derived from it are used as remedies for rheumatism.
Now to the etherial solution, add about half its volume of a concentrated solution of potassium hydroxide in methyl alcohol.
This is neutralized with milk of lime or soda ash, which converts acetic acid into calcium or sodium acetate, but has no action on the methyl alcohol and acetone which are also present.
The mixture is then distilled, when methyl alcohol, acetone, and water pass over into the distillate, leaving the acetate in the retort.
If an aqueous solution of methyl acetate be allowed to stand, a slow decomposition goes on.
It is best prepared by heating methyl alcohol and sulphuric acid to 140 deg.
The sulphuric acid solution is then allowed to drop slowly into an equal volume of water, when the methyl ether is liberated (E.
The ethers are neutral volatile liquids (the first member, methyl ether, is a gas at ordinary temperature).
C2H5, is prepared from methyl iodide and sodium ethylate, or from ethyl iodide and sodium methylate (A.
One of a series of series of complex nitrogenous substances, represented bymethyl ketol and related to indol.
The hydroxyl group also resembles the methyl group in its morphotropic effects, producing, in many cases, no change in symmetry but a dimensional increase in one direction.
In the aromatic compounds there is no regularity between the increments due to the introduction of methyl groups into the benzene nucleus or side chains; the normal value of 20 deg.
According to van 't Hoff the substitution of chlorine atoms into a methyl group occasions the following increments:-- Cl in CH3 66 deg.
Wood is strongly heated in an iron still, and the methyl alcohol is given off in the form of vapour, which on being collected and cooled condenses into liquid.
Two of these are of the greatest importance, methyl alcohol and ethyl alcohol.
This result is achieved by adding some of the methyl alcohol derived from the vapour given off by wood when heated.
Methyl selenide has some effect on the internal parts of the body(33).
The crystals on standing in the presence of air and light decomposed with separation of finely divided selenium and methyl quinazolone.
Methyl disulphide is colorless, but methyldiselenide(42) is a reddish yellow liquid.
HCl, were dissolved in six hundred cubic centimeters of warm methyl alcohol.
To this solution a quantity of sodium dissolved in methyl alcohol was added, in such proportion that the hydrochloride of hydroxylamine was present in slight excess over and above that required to convert it to sodium chloride.
Caffeine, it will be remembered, is the methyl ester of theobromine, and can be prepared from it.
Taking up the volatile alkaloids, we find with regard to conine, first, that the action of methyl iodide shows it to be a secondary amine, that is, it restrains only one replaceable hydrogen atom of the original ammonia molecule.
The formation of a series of alkaloids under the name of codeines, by the substitution of other organic radicals instead of methyl in the codeine reaction, has already been alluded to.
Both theobromine and caffeine, its methyl derivative, have been made from xanthine, which itself can be formed from guanine, a constituent of guano.
Besides the methyl derivative, however, others are possible, and several have been recently prepared, giving rise to a class of artificial alkaloids known as codeines.
Monomethyl and dimethyl aniline are colourless liquids prepared by heating aniline, aniline hydro-chloride and methyl alcohol in an autoclave at 220°.
It also contains methyl chavicol, anisic aldehyde, anisic acid, and a terpene.
A dirty olive green shows methylene blue, and a brownish colour shows spirit blue, water blue, Victoria blue, methyl violet, etc.
It is violet; the dye is methyl violet, crystal violet, or one of their allies.
For this purpose only boric acid or its potassium salt must be present; and to ensure this, the borate can be distilled with sulphuric acid and methyl alcohol and the volatile ester absorbed in potash.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "methyl" in a variety of sentences. We hope that you will now be able to make sentences using this word.
