If concentrated sulfuric acid be added to a solution of a protein to which some acetic acid (or better, glyoxylic acid) has previously been added, a violet color is produced.
Similarly, spongy platinum accelerates the oxidation of sulfur dioxide to sulfur trioxide, in the commercial manufacture of sulfuric acid.
This color will appear as a ring at the juncture of the two liquids, if the sulfuric acid is poured carefully down the sides of the tube, or throughout the mixture if it is shaken up.
An oily looking liquid, sulfuric acid, an excessively powerful agent, will set it at liberty.
Above all, we will run no risks, perhaps of blinding ourselves; for it is once more a question of heating manganese dioxide with sulfuric acid.
This reduced the cost of sulfuric acid to one-fourth of its previous cost, so that sulfuric acid came to be used to bleach linen instead of sour milk.
And there was me," snorted Chub, "trying to mix sulfuric acid with gunpowder.
I begin with powder and sulfuric acid, hit Clip below the belt with a reference to his Injun blood, and then land on him with a corker of a rock intended for Perry.
When coal is heated in retorts or ovens for making coke or gas a lot of ammonia comes off with the other products of decomposition and is caught in the sulfuric acid used to wash the gas as ammonium sulfate.
In the chapter on explosives I explained how cellulose treated with nitric acid in the presence of sulfuric acid was nitrated.
But as a consequence of this sulfuricacid during the war went up from $5 to $25 a ton and acidulated phosphates rose correspondingly.
First he takes down the bottle of benzene and boils up some of this with nitric acid and sulfuric acid.
If instead of glycerin we take cellulose in the form of wood pulp or cotton and treat this with nitric acid in the presence of sulfuric we get nitrocellulose or guncotton, which is the chief ingredient of smokeless powder.
Graebe and Liebermann filed their application for a patent on the sulfuric acid process as No.
This mixed with nitric and sulfuric acids gives nitroglycerin, an easy thing to make, though I should not advise anybody to try making it unless he has his life insured.
Acetone, which is also made from acetylene, can be converted directly into rubber by fuming sulfuric acid.
The replacement of sulfuric acid by hydrochloric has done away with that danger and the glucose now produced is pure.
But if the phosphate is treated with sulfuric acid it becomes more soluble and this product is sold as "superphosphate.
If the cellulose, instead of being digested a long time in dilute acid, is dipped into a solution of sulfuric acid (50 to 80 per cent.
If, as was formerly sometimes the case, sulfuric acid was used to effect the conversion of the starch or sulfurous acid to bleach the glucose and these acids were not altogether eliminated, the product might be unwholesome or worse.
The first step in the process is to digest the sawdust or chips with dilutesulfuric acid under heat and pressure.
To determine the amount of glycerine contained in soap dissolve 25 grams in hot water, add a slight excess of sulfuric acid and keep hot until the fatty acids form as a clear layer on top.
From a burette, quarter normal (N/4) sulfuric acid is added until the pink color is just discharged.
To the other portion add a few drops of 1 to 5 sulfuric acid and shake the test tube.
This is made by the action of concentrated sulfuric acid upon a solution of oleic acid or stearic acid in an aromatic hydrocarbon.
The difference between the number of cubic centimeters of N/4 sulfuric acid and N/4 caustic soda gives the amount of alkali in the sample.
Sulfuric acid, however, is considerably cheaper than hydrochloric and this more than compensates the necessity of having to eventually reject the recovered salt.
Should a permanent emulsion have formed, due to adding too great an amount of saponifier, a little sulfuric acid (0.
As greases and tallow often contain impurities a preliminary treatment with sulfuric acid is necessary.
To carry out this test shake 2 cubic centimeters of the fatty acids with 5 cubic centimeters of acetic anhydride; warm slightly; cool; draw off the anhydride and add 1:1 sulfuric acid.
To the filtrate from the insoluble matter add 40 cubic centimeters of half normal sulfuric acid, all the acid being added at once.
The Pfeilring reagent is very similar to the Twitchell reagent, being made from hydrogenated castor oil and naphthalene by sulfonation with concentrated sulfuric acid.
The washings are then titrated with N/10 sulfuric acid and expressed as sodium or potassium carbonate.
Or the ton of raw phosphate may be mixed with a ton of sulfuric acid in the fertilizer factory, and the two tons of acid phosphate may be sold to the same farmer for $32.
What is there in common, for example, between the heavy, oily liquid sulfuric acid and the colorless gas, hydrochloric acid?
Hydrochloric acid is always made by treating common salt (one afflicted with acid fermentation should omit the use of salt and soda), under high temperature, with sulfuric acid.
Sulfuric acid, sometimes called oil of vitriol, is one of the most active chemicals known, and is especially destructive to living tissue, as it combines with the water in the tissue so rapidly as to char or burn it.
The salts of sulfuric acid, or sulfates, are quite important, and many of them are poisonous.
Babcock found that by adding to the milk sulfuric acid of proper strength and temperature, the casein, the milk-sugar and the albumin are decomposed and the sticky quality of the milk is destroyed.
Always use an earthen dish, pour in the water first, and add the sulfuric acid to it.
The required amount of sulfuric acid should then be poured rather slowly into the water.
In order to fumigate this building about 340 pounds of cyanid and the same amount of sulfuric acid were used each time.
The gas is generated from the salt potassium cyanid, by treating it withsulfuric acid diluted with water.
All the rooms should be made tight, and the proper quantities of water and sulfuric acid should be measured and poured into jars placed in each room with the cyanid in bags besides the jars.
Here it is the fashion to descend under ground in order to feel the effect of the sulfuric heat, which is intense, and my friend who descended soon returned dripping with perspiration and calling out: Qui n'a pas vu cela n'a rien vu!
It is also sulfuric and the ground about it is woody, low, marshy and consequently aguish.
Since the work was carried out, a method has been published[7] in which aniline, glycerol and sulfuric acid are treated with ferric oxide.
Of the above methods, the only ones which need be considered are those in which a mixture of aniline, glycerol and sulfuric acid is heated with an oxidizing agent.
Other Methods of Preparation The cheapest and most convenient method by which mesitylene may be prepared is by the action of a dehydrating agent upon acetone; the agent most commonly used is sulfuric acid.
Concentrated hydrochloric acid is introduced into concentrated sulfuric acid, by means of a dropping funnel and a capillary tube leading to the bottom of the sulfuric acid container.
The oily layer is again warmed with sulfuric acid, as before.
The method described above is a modification of a patented process,[3] in which trinitrotoluene suspended in sulfuric acid is treated with chromic anhydride.
The trinitrobenzoic acid is precipitated from the filtrate by the addition of a slight excess of 50 per cent sulfuric acid.
The acid and oily filtrates from the two sulfuric acid treatments are steam distilled, and the distillate combined with the next batch of material.
The last half of the sulfuric acid must be added gradually, in order to prevent too violent a reaction.
In order to obtain a pure white hydrazine sulfate as the first precipitate, it is necessary to cool the hydrazine solution thoroughly and filter it twice before the sulfuric acid is added.
Notes The standard directions for the preparation of phenylacetic acid specify that the benzyl cyanide is to be treated with dilute sulfuric acid prepared by adding three volumes of sulfuric acid to two volumes of water.
Pure olive oil turns from a pale to a dark-green color in a few minutes, when it is shaken with the same volume of concentrated nitric acid or sulfuric acid.
It must not be hot enough, however, to volatilize the sulfuric acid.
Dissolve in water when cool, acidify with dilute sulfuricacid and extract with ether.
Dissolve a little lye (about 1/8 teaspoonful) in half a pint of water to make the water conduct electricity easily, or you may use sulfuric acid in place of lye.
Put a drop of concentrated nitric or sulfuric acid on a piece of colored wool cloth, or on a piece of colored silk.
The sulfuric and nitric acids must be measured in glass or china cups, and the hydrochloric acid must be measured in a silver-plated spoon or in glass--not in tin.
Whether the analogy should be pursued even further remained doubtful, although some suspicion lingered on for a while that phosphoric acid might actually be a modified sulfuric acid.
Treatment with sulfuric acid decomposed these materials into a solid residue and dissolved phosphoric acid.
The other great advance in the use of phosphatic plant nutrients started with Liebig's recommendation (1840) to treat bones with sulfuric acid for solubilization.
A part of the old analogy remained as far as the acids are concerned: sulfuric acid corresponds to phosphoric; sulfurous acid to phosphorous acid with less oxygen than in the former.
This idea was not entirely new; since 1832, a production of a "superphosphate" from bones and sulfuric acid had been in progress at Prague.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "sulfuric" in a variety of sentences. We hope that you will now be able to make sentences using this word.
