The acids render it lighter, the alkalies deepen it, giving it more of an orange hue: both produce a small dun precipitate, in consequence of which it becomes clearer.
The alkalies ought to be rejected as a means of changing scarlet to crimson.
The alkalies appear not to injure the colours derived from madder, but they accelerate the destruction of most other colours.
In fact, the lime and alkalies in general, when used in small quantity, seem to coagulate the glutinous extractive matter of the juice, and thus tend to brighten it up.
The alkalies are soluble in water, even when carbonated; a property which distinguishes them from the alkaline earths.
It has indeed been sometimes said in bleach-works, that fatty substances are no longer soluble in alkalies when they are combined with oxygen.
For extracting the red part of carthamus, and thereafter applying it to stuff, the property which alkalies possess of dissolving it is had recourse to, and it is afterwards precipitated by an acid.
The colouring particles of Brazil wood are very sensible to the action of alkalies which give them a purple hue; and there are several processes in which the alkalies, either fixed or volatile, are used for forming violets and purples.
As it contains ammonia, which has already modified its natural colour, the fixed alkalies can produce little change on it, only deepening the colour a little, and making it more violet.
It must have been remarked in the experiments just described, that the caustic alkalies attack the extremely delicate colour of carthamus, making it pass to yellow.
This is of special interest in the development of dry-farming, since dry-farm soils, as a rule, contain more substances that may be classed as alkalies than do soils maintained under humid conditions.
Those salts derived from the combination of acids and earths, the alkalies or metals, may be employed like the acids diluted with water.
Its compounds with thealkalies and alkaline earths are gummy and not easily obtained pure.
Alkalies added to urine coloured by santonin or rhubarb strike a red colour.
It dissolves easily in caustic alkalies and in milk of lime, but is insoluble in all the ordinary alcoholic and ethereal solvents, as well as in diluted sulphuric acid.
It volatilises with the steam when boiled with water, and may be distilled in the presence even of the caustic alkalies and the alkaline earths without decomposition.
Morphine is easily soluble in dilute acids, as well as in solutions of the caustic alkalies and alkaline earths; carbonated alkalies and chloride of ammonium also dissolve small quantities.
The fixedalkalies destroy all vegetable life, if applied in strong solution or in substance, by dehydrating and dissolving the tissues.
This, however, will never occur in operating on organic tissues and fluids, for bothalkalies are invariably present.
The caustic alkalies precipitate it, the precipitate being insoluble in excess; it is first white, but afterwards brick-red.
Distinction between the Blood of Animals and Men--The Alkalies in various Species of Blood, 62, 63 PART III.
With regard to the quantitative separation and estimation of the fixed alkalies in the ash of organic substances, the reader is referred to the processes given in "Foods," p.
Of the common indicators methyl orange is the most sensitive toward alkalies and phenolphthalein toward acids; the others occupy intermediate positions.
That methyl orange should be most sensitive toward alkalies is evident from the following considerations: Methyl orange is a weak base and, therefore, but little dissociated.
In the neutralization processes which are employed in the measurement ofalkalies (!
Acid of this greater strength was used as the solutions of the alkalies were stronger.
Where mixedalkalies and superphosphate,” said the Doctor, “are added to the ammonia, the increase from the ammonia is far greater than where ammonia is used alone.
The carbonates of potash and soda and the alkalies themselves in concentrated form cause symptoms of intestinal irritation similar to those produced by mineral acids.
The alkalies and their salts melt at a low red heat.
Reddened litmus paper is a very sensitive reagent for free alkalies, the carbonates of the alkalies, alkaline earths, sulphides of the alkalies and of the alkaline earths, and alkaline salts with weak acids, such as boracic acid.
The silicates of the alkalies produce, in a very strong heat, or continued heat, with nitrate of cobalt, a pale blue color.
The alkalies are absorbed by the charcoal leaving the lime and magnesia infusible on the surface.
The presence of the other alkalies does not prevent this reaction.
This salt is used sometimes for the detection of alkalies in silicates.
The alkalies cannot be reduced to the metallic state before the blowpipe.
It is rarely complete, and the soils produced from it frequently contain a considerable proportion of the undecomposed mineral, which continues for a long period to yield a supply of alkalies to the plants which grow on them.
The substances just mentioned must be considered to owe their chief manurial value to nitric acid; but other salts have been used as manures in which the effect is undoubtedly due to the alkalies themselves.
Coagulated albumen is soluble in alkalies and in nitric acid.
On the former, it operates by decomposing the silicates, which form the main part of the soil, and the alkalies they contain being thus set free, a larger supply becomes available to the plant.
Silica and the alkaliesoccur generally, though not invariably, in all three.
The fumes of the laboratory, its alkaliesand acids, the mechanical appliances of the observatory, its specula and its lenses, do not appear fitted for a place in the painted bowers of the Muses.
From the analogous nature of this volatile compound, and the fixed alkalies soda and potash, it was inferred that it must, like them, be an oxide of a metallic base.
From the following table it will be seen that the urine of swine (containing 97 per cent of water) is much poorer in nitrogen and alkalies than is the case with the urine of the sheep, horse, or cow.
This mistake was due to the method adopted in estimating it, which consisted in treating the soil with boiling caustic alkalies and counting as ammonia what was given off as such.
The main mass of the rocks consists of silica, and this is generally combined with alumina, as in clay, forming aluminium silicate, and with the commoneralkalies and alkaline earths.
They consist of silica and alumina, along with various other substances, chiefly alkalies and alkaline earths.
Of this mineral matter it may be noted that nearly all the alkalies (potash and soda), or about 98 per cent, are found in the urine.
Acids are substances which excite the taste of sourness when applied to the tongue; they change the blue juices of vegetables to red, and combine with alkalies to form neutral compounds.
These alkalies damage the yeast and cause its death by auto-intoxication.
Such death can be avoided by changing the external conditions, and, if the acids or alkalies produced by these bacteria are neutralised, the bacteria survive.
Davy discovered the metallic bases of the alkaliesand earths.
It is readily soluble in hot water, alcohol, ether, chloroform, fat and volatile oils, as well as in solutions of caustic alkalies and alkaline carbonates.
Combinations of sulphur with the alkalies and alkaline earths are much used as depilatories.
Alkalies and alkaline carbonates may also be used to remove the chromic acid, and leave a subsalt, or the very stable oxide or carbonate of manganese, which may be peroxidized by the use of chloride of lime, peroxide of hydrogen, or ozone.
Solutions of chloride of tin, gallic and tannic acids, alone or with alkalies or alkaline carbonates, may also be employed to modify or change the color.
The alkalies employed with the dyes should be employed in diluted solutions, as being liable to produce reticulation.
Alizarine and the caustic alkalies produce a variety of tints, from violet to purple, according to the concentration of the solutions.
Solutions of gallic acid, tannic acid with alkalies of carbonate, may also be employed to modify or change the color.
Incompatible withalkalies and their carbonates, also with metallic oxides and salts of silver and of lead.
Incompatible with alkalies and their carbonates, metallic oxides and salts of silver and of lead.
Decomposed by oxidizing agents, alkalies and the haloid salts of the alkali metals (chlorides, bromides or iodides).
Incompatible with alkalies and their carbonates, metallic oxides and the salts of silver and of lead.
Dissolved by solutions of the fixed alkalies or their carbonates.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "alkalies" in a variety of sentences. We hope that you will now be able to make sentences using this word.
