It yields coumarins when warmed with sulphuric acid and phenols (H.
The solution obtained is neutralized, concentrated on the water-bath, acidified by sulphuric acid and extracted with ether.
The fluid to be tested is acidulated with a few drops of sulphuric acid; sulphate of indigo added sufficient to colour the solution blue, and finally a few drops of sulphurous acid.
To the ash is now added exactly the quantity of decinormal sulphuric acid as the decinormal soda last used to make it alkaline--that is to say, if the total acidity was equal to 3.
The best single test appears to be the reaction discovered by Magelhaes; this consists in adding thymol to a solution of cytisine in concentrated sulphuric acid, when a yellow colour, finally passing into an intense red, is produced.
Pilocarpine dissolves without the production of colour in sulphuric acid; but, with bichromate of potash and sulphuric acid, a green colour is produced.
Sulphuric acid dissolves it with the production of a clear yellow-red and the solution becomes brownish.
Fraenkel's observations on the effect of sulphuric acid on the kidney, 85.
Marsh's Original Test for Arsenic= consisted in evolving nascent hydrogen by zinc and sulphuric acid, and then adding the liquid to be tested.
Here they made the ketch fast, and landed on a beach of volcanic violet, where they sometimes sank knee deep into sulphuric water, and felt squirming sea things squelch beneath their tread.
It is a constituent of ordinary coal-gas, and may be obtained from alcohol by heating it with twice its volume of concentrated sulphuric acid.
The phenol is sulphonated with strong sulphuric acid, and the phenol-sulphonic acid resulting is nitrated with strong nitric acid at about 100deg C.
Mixed nitric and sulphuric acid is put in at the end where the T.
One part of dimethylaniline is dissolved in 10 parts of strong sulphuric acid, and the solution allowed to flow into strong nitric acid.
From the decomposition of the sulphate of iron which takes place, a vast quantity of sulphuric acid must be generated, which, reacting on the different bases of magnesia, lime, etc.
The large tube or cup is filled with a diluted solution of sulphuric acid.
A few drops of sulphuric acid quickens and improves the action.
Fill the outer jar with a solution of 16 parts water and 5 parts sulphuric acid.
A paste for the positive plate is made from 1 part sulphuric acid and 1 part water with a sufficient amount of red lead added to make of thick dry consistency.
As this cup must hold the sulphuric acid it must be perfectly liquid-tight.
Also remember that sulphuric acid will destroy anything that it comes in contact with and will make a painful burn if it touches the hands.
Each jar to be filled with 20 parts water to 1 part sulphuric acid.
Decoloration of Flowers by Fumes of Sulphur [288] Dissolve some sulphur in a small dish which will inflame by contact with air thus forming sulphuric acid fumes.
Apply two coats, allowing each time to dry, after which immerse the metal in a solution prepared as follows: 3 parts water, 1 part nitric acid, 1 part sulphuric acid.
The jar is partly filled with a very dilute solution of sulphuric acid, about 1 part of acid to 20 of water.
After this has dried, thoroughly immerse the metal in a solution composed as follows: 3 parts water, 1 part sulphuric acid, 1 part nitric acid.
Make a solution of 1 partsulphuric acid to 4 parts of water, and fill the lamp about two-thirds full (Fig.
Dilute some oil of vitriol (sulphuric acid) with about 12 times its measure of water and keep in a bottle when not in use.
Yes," he replied, laconically, taking a bottle of concentrated sulphuric acid and pouring a few drops in a beaker of slightly tinged water.
Sulphuric acid is still more generally known by the name of oil of vitriol and vitriolic acid, from its having been originally obtained by distilling green vitriol.
On digesting this with sulphuric acid, the silica is separated and a solution of alum obtained.
It has been shown by careful experiment, that even a minute quantity of sulphuric acid used in the dye bath to liberate the colour, is at once absorbed by the leather, and that no amount of subsequent washing will remove it.
Modern leathers dyed with the aid of sulphuric acid are all to be condemned.
In a very large proportion of cases, the decay of modern sumach-tanned leather has been due to the sulphuric acid used in the dye bath, and retained in the skin.
The benzine is treated with sulphuric acid, and the result is naphtha, which is in wide demand in Europe, especially in France, for the purpose of producing aniline dyes, while it is also put to many other purposes.
With the introduction of aniline dyestuffs about 1870 sulphuric acid came into universal use as a means of clearing the skin before entering the dyebath.
The cheapest, and at the same time the most effective, acid for this purpose was vitriol or sulphuric acid.
I should advise all librarians who do their own binding to accept no leather without a written guarantee of freedom from sulphuric acid, and even then I should send a cutting to Dr.
Here, again, therefore, sulphuric acid was introduced into the leather during the process of manufacture, thus increasing the proportion of leather which contained this disintegrating material.
We are in the hands of our leather merchants, and although several firms are now willing to sell leathers under guarantee of freedom from sulphuric acid, all are not yet so inclined.
The first step in the degradation of the manufacture of light leathers, though it at first affected the heavy leathers only, was the introduction of the use of sulphuric acid in 1768 by Dr.
The skins emerge from the drum a dark mahogany colour; they are then washed in water and afterwards soured in a sulphuric acid bath.
Having once established its footing in the tanyard the use of sulphuric acid was soon further extended.
The use of sulphuric or other mineral acids for the purpose of developing the depth of colour during the process of dyeing.
Treatment consists in neutralizing the alkali by an acid, such as dilute sulphuric acid (1 per cent) or strong vinegar.
Dilute sulphuric acid in half-ounce doses should be given with the purgative medicine.
Sulphuric acid has also been used for a similar purpose, diluting it to the extent of 1 part of acid to 3 or 5 of water.
Buttermilk or vinegar, one-half pint, or sulphuric acid, 60 drops in a pint of water, may also be used frequently as injections.
While the sulphuric acid is being added to the crude carbolic acid much heat is evolved, and if the glass jar in which the two are mixed is placed in cold water the resulting product is said to have a higher disinfecting power.
This is made more powerful by mixing with it an equal volume of commercial sulphuric acid.
The liberation of chlorin gas is brought about by the action of sulphuric acid, either on a mixture of chlorid of sodium and black oxid of manganese or on bleaching powder.
The mixture is placed in a deep vessel, a test tube or beaker, which is placed in a sulphuricacid bath, a thermometer being suspended in the mixture.
Chlorsulphonic acid is made by passing dry HCl over solid sulphuric acid so long as it continues to be absorbed.
Since no solid sulphuric acid was at hand, ordinary fuming Nordhausen acid was taken and from one of two equal portions the SO{3} was driven over into the other.
If roasted pyrites, a waste product of certain chemical factories, are sprinkled with sulphuric acid of 66° B.
If the ground mass of beetles is sprinkled with sulphuric acid and a reasonable amount of lime and earth be added, the combination forms an excellent fertilizer for certain crops.
On the other hand, very secondary results were obtained with phosphoric and sulphuric acids.
Metals may be rapidly colored by covering their surfaces with a thin layer of sulphuric acid.
To make incombustible writing and printing paper, asbestos of the best quality is treated with potassium permanganate and then with sulphuric acid.
Electric paper may be made thus:--Tissue paper or filtering paper is soaked in a mixture consisting of equal quantities of saltpetre and sulphuric acid.
Besides water, the fluids used were weak solutions of sulphate of soda and strong sulphuric acid.
A mixture is made of one-third potatoes, two-thirds water, and onetenth part of sulphuric acid.
This is better effected by an acid such as sulphuric acid, or by a diastase.
It can be avoided only by keeping the vats thoroughly clean; they should be washed with water acidulated with five per cent of sulphuric acid.
This saccharification of the starch may be accomplished by sulphuric acid or by the action of diastase.
Here it is diluted and heated, mixed with sulphuric acid and pumped into the long ranges of cooling pipes, located along the fermenting room and built on the principle shown in Fig.
After setting up, one gallon of strong sulphuric acid and 10 lbs.
Sulphuric acid may be used to convert even woody fibre, paper, linen, etc.
It is best to add to this pulp a small portion of sulphuric acid, say two-tenths of one per cent.
Numerous sulphonic acids of anthracene are known, a monosulphonic acid being obtained with dilute sulphuric acid, whilst concentrated sulphuric acid produces mixtures of the anthracene disulphonic acids.
After this treatment, the mixture is run into lead-lined vats and treated with sulphuric acid, steam is blown through the mixture in order to bring it to the boil, and the anthracene is rapidly oxidized to anthraquinone.
It is insoluble in sulphuric and nitric acids, but is readily soluble in hydrochloric and tartaric acids and in solutions of the caustic alkalies.
Geuther); or by the addition of water to the pentachloride, the precipitate formed being dried over sulphuric acid (P.
The amorphous variety may be obtained from the crystalline form by dissolving it in caustic potash or soda or in solutions of alkaline sulphides, and precipitating the hot solution by dilute sulphuric acid.
A mixture of two parts of brown umber and one part of sulphuric acid, with spirits of wine or methylated spirits added until it is sufficiently fluid, will serve for white wood.
It will not dissolve in alcohol, but yields to the concentrated action of sulphuric acid, which will dissolve all resins except caramba wax.
Including the Manufacture of Sulphuric Acid, Sulphate of Soda, and Bleaching Powder.
Clean the wire by pickling it for a short time in very dilute sulphuric acid and scouring with sand if necessary.
The means for effecting the object are very simple--rubbing the eggs with a hair brush, subjecting them to the action of electricity, or more surely still by dipping them for half a minute in concentrated sulphuric acid.
He was a sanguinary cruel caitiff; a dogged miscreant who not only preached pike massacres, but yelled and raved for sulphuric acid, which he would have had rascals to squirt into soldiers' eyes.
But if you must use anything of the kind, a little cantharides and mustard, rubbed into a paste with turpentine, laid on over night, and the face washed with sulphuric acid in the morning, will probably produce an alteration.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "sulphuric" in a variety of sentences. We hope that you will now be able to make sentences using this word.
