Chromic acid oxidizes it to acetic acid and ozone oxidizes it to ethyl peroxide.
Nitric acid and chromic acid oxidize them in such a mariner that they yield the same products as the alcohols from which they are derived.
Small external tumors may be painted with zinc chlorid, chromic acid, or a concentrated solution of bichlorid of mercury.
A drop of nicotine poured on dry chromic acid blazes up, and gives out an odour of tobacco camphor; if the ignition does not occur in the cold, it is produced by a gentle heat.
The graduation of tint, Lesser remarks, is what is not seen when the yellow colour is due to poisoning by chromicacid or by strong solution of ferric perchloride; in such cases, wherever the liquid has gone, there is a yellowness.
If by treating a complex liquid with ammonium hydrosulphide, sulphides of zinc, manganese, and iron are thrown down mixed with chromic oxide, the same principles apply.
On digesting a solution of the bichromate with sulphuric acid and alcohol, the solution becomes green from the formation of chromic oxide.
Nitric acid oxidises cevadine completely; with potassic permanganate it yields acetic and oxalic acids; with chromic acid it forms acetaldehyde and carbon dioxide.
If, however, the middle hard gelatine is washed before use, it will give, when mixed with the chromic salt, transparent films of insufficient durability.
Albumen=, when mixed with a solution of a bichromate, is not thereby coagulated, as occurs upon the addition of pure chromic acid.
This arises in consequence of the organic matter being oxidised by the chromic acid, a corresponding decomposition and reduction of the chromate salt to chromate of chromium taking place.
It will be understood that in consequence of the decomposition, or rather reduction, of chromic acid by organic matter, the latter is also decomposed and oxidised in a corresponding degree.
Although the skins are preserved by chromic acid, they are not made into leather, for in this condition they would dry quite horny.
Another method consists of reducing a solution of chromic acid with glucose or grape-sugar.
The second bath consists of chemicals which reduce the chromic acid to the oxide, which is quite inert, so that there is no danger whatever of contracting a poisoned foot as the result of wearing chrome leather.
The only poisonous acid used in one of the many chrome processes ischromic acid, but this is converted into the oxide of chromium in a second bath and is, therefore, made quite innocuous.
The first bath, the chromic acid solution, is made by treating bichromate of potash or soda with hydrochloric, sulphuric, or formic acids.
Chlorine and nitric acid oxidize it to benzil; chromic acid mixture and potassium permanganate, to benzoic acid and benzaldehyde.
On oxidation with nitric acid it is converted into benzaldehyde, whilst chromic acid oxidizes it to benzoic acid.
In the same year, 1858, two French manufacturers patented the production of a red dye formed by the action of chromic acid and other oxidizing agents on aniline, the colouring matter thus made being used for dying artificial flowers.
In the bichromate cells or the chromicacid cells, bichromate of soda, or bichromate of potassium, is used for the depolarizer, water and sulphuric acid being added for attacking the zinc.
When dissolved, its action is similar to that of the chromic acid solution.
This depolarizer is placed on the market in the form of crystals, known as sulpho-chromic salt, made by the action of sulphuric acid upon chromic acid.
The second bath contained, in effect, sulphurous acid, which reduced the chromic acid in the skin fibres to the tanning chrome salts.
Like all electrolytes its presence decreases the adsorption of chromic acid.
Chromic salts are usually hydrolyzed to some extent, but this extent is very different even in water, according to the nature of the acid radical.
Wilson has even suggested that the proteid molecule is in time partly hydrolyzed with the formation of a chromic salt with the acid groups.
It is considered desirable in baths of the acid type to prevent swelling by the excess of acid, and in baths made up from commercial chromic acid to replace correspondingly that normally formed from the reaction of dichromate and acid.
The alum had its own tanning action and the dichromate was reduced to chromic salts by the organic matter of the skin itself and by the greases employed in dressing.
It is not due to the presence ofchromic acid, but to a reaction between alumina and chromic oxide, which requires an elevated temperature.
It is oxidized by chromic acid in glacial acetic acid solution to benzoic acid, dilute nitric acid and chromic acid mixture being without effect.
The combustion tube has attached in front a small V-Shaped tube charged with chromic acid, dissolved in 60 per cent.
PALM OIL and COCOA-NUT OIL are generally refined and bleached by either chromic acid or chlorine, or by heat:-- a.
Others boil the fat along with water and a little dilute nitric or chromic acid, or a mixture of bichromate of potash and sulphuric acid; and afterwards wash it thoroughly with water.
Chromate of potassium is used in dyeing, bleaching, the manufacture of chromic acid, bichromate of potassium, &c.
If oxidised by means of chromic acid it yields benzoic acid.
The process with chromic acid has been already noticed, but is more fully explained below.
The process is greatly facilitated by the introduction of some chromic acid.
Jade is a double silicate of magnesium and aluminum, coloured withchromic oxide.
It is chiefly used in dyeing and bleaching, and as a source of chromic acid.
The carbonic acid given off, after being freed from sulphurous anhydride by passing through the chromic acid solution and of moisture by the calcic chloride, passes into the soda lime tube and is absorbed.
In the presence of mineral acids, and used warm or boiling, chromic acid oxidises cellulose into oxycellulose and other products.
Chromic acid, when used in the form of a solution, has but little action on cellulose.
Section through part of one of the suprarenal bodies of an adult Scyllium hardened in chromic acid.
My observations on these bodies in the adult Scyllium have only been made with specimens hardened in chromic acid, and there are many points which deserve a fuller investigation than I have been able to give them.
The specimen was prepared by removing the nasal pit, flattening it out and mounting in glycerine after treatment with chromic acid.
This network becomes more distinct in succeeding stages, especially in chromic acid specimens (Pl.
Observations on the yolk spherules may be made either in living ova, in ova hardened in osmic acid, or in ova hardened in picric or chromic acids.
Chromic acid consists of hydrogen united to the metal chromium and oxygen.
From this we learn that before the potassium bichromate enters into action in the battery, it is resolved into chromic acid.
The "bottle" form of the bichromate or chromic acid battery (as illustrated at Fig.
As one form of chromic cell has found favour with some bell-fitters, we shall study its peculiarities farther on.
Chromic acid is now prepared cheaply on a large scale, so that potassium bichromate may always be advantageously replaced by chromic acid in these batteries; the more so as chromic acid is extremely soluble in water.
The only other type of battery which it will be needful to notice in connection with bell work is one in which the depolariser is either chromic acid or a compound of chromic acid with potash or lime.
After once being placed in the chromic acid, the cover-slips must on no account be touched by the fingers.
A few pieces of pipe-clay or pumice may be placed in the beaker to prevent the "spurting" of the chromic acid.
The dirt usually rubs off easily, as it has become friable from contact with the chromic acid.
Return all the cover-slips to the beaker, fill in fresh chromic acid solution, and treat as new cover-slips.
Considerable quantities of chromic iron are found on the hills in this area, which embraces about six hundred acres.
The essential peculiarity of the veins at Thetford is that they are occasionally associated, as already mentioned, with grains and threads of chromic iron and also of magnetite.
Among others some large and valuable deposits of chromic iron are found in the immediate neighbourhood, within but a short distance of the asbestos mines.
To avoid this the body should be previously hardened by a somewhat prolonged soaking in methylated spirit, or in a solution of chromic acid prepared as before directed.
The remainder of the figures are representations of embryos of Scyllium canicula hardened in chromic acid.
The commissures stain very deeply with the mixture of osmic and chromic acid, and form one of the most conspicuous features in successful longitudinal sections of embryos so hardened.
Surface view of blastoderm of Pristiurus hardened in chromic acid.
In sections hardened with chromic acid only they cannot be seen with the same facility.
The figures which are tinted represent sections of embryos hardened in osmic acid; those without colour sections of embryos hardened in chromic acid.
Demarquay[71] reports good results in one case of dissecting papillary glossitis from biweekly applications of equal parts of chromicacid and water.
Chromic acid (1:8) is a serviceable local stimulant to indolent ulcers.
The second from an imperfect knowledge of the properties of gelatine acted on by light in presence of a salt of chromic acid.
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.
It does not keep owing to the presence of gelatine and other organic matters which it dissolves and which cause the reduction of the chromic salt even in the dark.
The carbon proofs can be toned and at the same time intensified by reagents acting with chromic oxide.
The quantity is so minute that the alcoometer is not in the least affected by it, and it requires the chromic acid test even to reveal its presence.
Finally, the gravest doubts have been thrown upon the trustworthiness of the chromic acid test relied on by Messrs.
Another action of chromic acid is, that it destroys the action of light on silver bromide, so that up to this point operations can be carried on in broad daylight.
Now, chromic acid has the property of precipitating gelatine, so that what I hope to have done is to have precipitated the gelatine in this emulsion, and which will carry down the silver bromide as well.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "chromic" in a variety of sentences. We hope that you will now be able to make sentences using this word.
