The best glass, that which stands both heat and solvents best, is that in which there are fewest alkaline salts.
Among the solvents of Iron we mentioned fixed alkalis; and that they have such a power is proved by the following phenomenon.
Ardent spirits are supposed to be the natural solvents of oils and oily matters.
The alkaline hydrates of potash and soda are powerful solvents of thymol; ammonia dissolves it but sparingly.
Most of these solutions have the brown colour of liquid iodine, but some (particularly those formed by the last threesolvents named above) have the beautiful violet colour of the vapour.
Amorphous silica is much more easily attacked by solventsthan the crystalline variety.
Hence we must select such solvents as have a weaker affinity for the mordants than the mordants have for the stuffs.
These volatile liquids, when isolated, are used in the arts as substitutes for spirits of turpentine, as solvents for various substances, and to increase the illuminating power of coal-gas.
The fixed or volatile oils, or mixtures of them, are used as vehicles or solvents in the former, and concentrated alcohol in the latter.
The best solvents of litharge are nitric acid and acetic acid.
Also, the structure of the roasted bean renders it more readily penetrable by solvents than does that of the green bean.
Afterward, the extracting solvents are driven out of the coffee by re-steaming.
In fact, on physiological grounds, I very much doubt the efficacy of either sulphuric ether or chloroform as solvents of gall-stones in the living body.
And even supposing that sulphuric ether and chloroform existed in the blood in a free state, they could not possibly do so in a sufficiently {121} concentrated form to be able to act as solvents of biliary calculi.
By treating the fibrous cellulose nitrates with liquid solvents of the high nitrate diluted with non-solvent liquids, and more especially water.
Yield of furfural was estimated on the whole plant and on the residue from a treatment with alkaline and acid solvents in the cold such as to remove all cell contents.
As stated it is soluble in certain of the ordinary solvents of the cellulose esters, e.
It is entirely insoluble in all the ordinary solvents of the higher acetates.
Moreover, it entirely resists the actions of the special solvents of cellulose--e.
But this substance taken alone is very difficult to mould or granulate, and the loss of expensive solvents must necessarily be quite considerable.
The other kind of dope had an acetate base and was made from cellulose-acetate and such wood chemicalsolvents as acetone.
One of these dopes was nitrate in character and was made from nitrocellulose and certain wood-chemical solvents including alcohol.
Mr. Carlyle has been a most powerful solvent, but it is the tendency of solvents to become merely historic.
There are conditions when indirect solvents are most powerful, as there are others, which these have done much to prepare, when no lover of truth will stoop to declarations other than direct.
The deposits in which solvents are appropriate are termed respectively Lithic and Phosphatic.
It is in the case of urinary deposits produced in the fourth way that true solvents are appropriate.
Solvents are medicines which are employed to hold these insoluble substances in solution, where there is not enough of the natural solvent material in the system.
There are many ways in which solvents may be applied, some are the subject of patents.
The separation of the constituents is effected with suitablesolvents applied in proper order.
The action of the acids and other solvents is described in the chapter on Reagents.
Another difficulty is that the best scintillating solvents are not the best chemical solvents for most biological materials.
On allowing these solvents to evaporate spontaneously, residues are obtained which will give the reactions already detailed.
The action of various solvents on opium has been more especially studied by several scientists who are engaged in the extraction of the alkaloids.
To extract apomorphine, the bases are precipitated by sodic bicarbonate, and the precipitate extracted by ether or chloroform, either of which solvents leaves morphine undissolved.
Bisulphide of carbon and water are solvents which will easily separate the powder into its three constituents.
The complete solventsof chloride of silver are--ammonia, cyanide of potassium, and hyposulphite of soda.
That this coating is really arsenical can be established by the behaviour of metallic crusts of arsenic towardssolvents (as given at p.
It is the resistance of the haematin to decomposition and to ordinary solvents that renders it possible to identify a certain stain to be that of blood, after long periods of time.
Distillation over, the alkaloids, glucosides, and their allies would next be naturally sought, since they can be extracted by alcoholic and ethereal solvents in such a manner as in no way to interfere with an after-search for metals.
Creasote, in its reactions with sulphuric and nitric acid, bromine and gelatin, is similar to carbolic and cresylic acids, and its solubility in most solvents is also similar.
Defn: To subject to the action of various solventsin order to remove all soluble substances or extractives; as, to exhaust a drug successively with water, alcohol, and ether.
Note: According to the sorts of solvents employed, the ordinary kinds of varnish are divided into three classes: spirit, turpentine, and oil varnishes.
The nitrates are also very insoluble substances, all the so-called solvents merely converting them into jelly.
The solubility of nitro-glycerine in various solvents has been investigated by A.
The nitro-cellulose produced by this formula is very insoluble in the compound ethers and other solvents of pyroxyline, and is seemingly only converted or gelatinised by the action of the solvent.
These solvents are those which also develop a solvent action when heated to their melting point in combination with pyroxyline.
Field groups the solvents of pyroxyline into classes thus: Two of the monohydric alcohols; compound ethers of the fatty acids with monohydric alcohols, aldehydes; simple and mixed ketones of the fatty acid series.
These four classes include the greater number of the solvents of pyroxyline.
It appears to be merely a mixture of its components, since by treatment with appropriate solvents the camphor may be readily extracted, and on heating the pyroxyline burns away while the camphor volatilises.
The agent may be removed from the equipment by these solvents, but exposure to the contaminated solvents will produce the same effects as exposure to the agent on the equipment.
Most chemical agents are soluble in organic solvents such as gasoline, motor oils, and lubricants.
Strong acids, alkalies, and organic solvents may deteriorate and decompose rubber articles.
It was a free adaptation of an unreadable Latin treatise by a Dutchman, which in Fontenelle's skilful hands becomes a vehicle for applying Cartesian solvents to theological authority.
The intellectual task of this intervening period was to turn to account the ideas provided by the philosophy of Descartes, and use them as solvents of the ideas handed down from the Middle Ages.
It is almost insoluble in ordinary solventslike chloroform, benzine, acetic ether, and carbon bisulphide.
An explanation of the behaviour of cellulose towards the solvents already mentioned, and towards acid and alkali, requires a reference to its chemical composition.
With white papers which have been merely toned the proportion of dye is exceedingly small, and a large bulk of paper has to be treated with suitablesolvents in order to obtain an extract containing sufficient dye for investigation.
A distinct compound cellulose present in the complex cuticular tissue of plants, and separated easily by suitable solvents from the wax and oily constituents also present.
Its best solvents are benzol, chloroform, bisulphuret of carbon, rectified mineral naphtha, and rectified oil of turpentine.
It loses its solubility in the solvents of ordinary caoutchouc, whilst its elasticity is greatly augmented, and has become permanent.
A much lower temperature is, however, sufficient if the duration of the exposure is much extended or the compound mass is softened with any of the common solvents of india rubber.
Though his writings abound in universal solvents and other devices of the alchemists, he made some real contributions to chemical knowledge.
Now, the ionizing power of solvents like water, ammonia, etc.
That it must be so can be proved by applying the law of physical equilibrium to the mixed solvents in contact with an excess of the substance, ‹i.
The question may be raised, why the first solvents mentioned should have the power to cause ionization, while the second series of solvents named do not have this power, or have it only to a very slight extent.
The Ionizing Power of Solvents Related to the Unsaturated Condition of their Simple Molecules and to their Power of Association.
A substance may be distributed between two solvents and show a different molecular weight in the two (see p.
The most important ionizing solvent is water and, of the common solvents which cause ionization, it is the most powerful in this particular.
In solvents, then, of high dielectric powers, the coëxistence of oppositely charged particles must be more favored than in solvents of low dielectric powers.
Kahlenberg[32] has recently used rubber membranes, that are permeable for solvents like benzene, pyridine, etc.
The podoconus consists of differentiated endoplasm, which becomes more deeply stained by carmine and offers greater resistance to solvents than the surrounding finely granular protoplasm.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "solvents" in a variety of sentences. We hope that you will now be able to make sentences using this word.
