Picric acid can also be obtained from it by first treating acetylene with sulphuric acid, converting the product into phenol by solution in potash and then treating the phenol with fuming nitric acid.
The purely aromatic amines result upon heating the primary amines with their hydrochlorides, and, in some cases, by heating a phenol with a primary amine and anhydrous zinc chloride.
Salicylic acid or orthohydroxybenzoic acid is either obtained from oil of winter-green or is made synthetically by Kolbe's process from phenol and carbonic acid.
You can easily prove this by dropping carbolic acid or phenol down a red-hot tube filled with iron-borings.
Again, by oxidising phenol with oxalic acid and vitriol, we get a colour dyeing silk orange, namely, Aurin, HO.
Following poisoning from phenol and related drugs the urine may have a normal color when voided, but becomes olive-green to brownish-black upon standing.
Add a few drops of dilute phenol solution to a few cubic centimeters of the milk, and run the mixture gently upon the surface of some strong sulphuric acid in a test-tube.
Uffelmann's reagent as follows: In a test-tube mix three drops concentrated solution of phenol and three drops saturated aqueous solution of ferric chlorid.
As has been stated, the urine following phenol poisoning turns olive-green and then brownish-black upon standing.
The presence of phenol causes a deep amethyst-blue color, as in Uffelmann's test for lactic acid.
Instruments dipped in pure phenol and dried on sterile gauze are rendered sterile and may be safely employed.
Gangrene of a single part, (especially in a young subject), incident to a slight injury or infection, should always excite suspicion thatphenol has been employed.
Adolf von Baeyer discovered in 1872 that when phenol and formaldehyde were brought into contact they seized upon one another and formed a combine of unusual tenacity, that is, a resin.
But, starting with phenol again, let us heat it with caustic alkali and chloroform.
This threatened not only to afflict us with headaches by depriving us of aspirin but also to removed the consolation of music, for phenol is used in making phonographic records.
When the war broke out in 1914 it shut off our supply of phenol (carbolic acid) for which we were dependent upon foreign sources.
He found that when equal weights of phenol and formaldehyde were mixed and warmed in the presence of an alkaline catalytic agent the solution separated into two layers, the upper aqueous and the lower a resinous precipitate.
Baekeland turned his attention to the phenolcondensation products, working gradually up from test tubes to ton vats according to his motto: "Make your mistakes on a small scale and your profits on a large scale.
This is a name the Australians coined for synthetic resin made from phenol and formaldehyde like bakelite.
When we entered the war the need for phenol became yet more imperative, for it was needed to make picric acid for filling bombs.
Some are phenolic condensation products of formaldehyde like those we have been considering, but some use coal-tar compounds having no phenol groups, such as naphthalene sulfonic acid.
Tarasoff has made a series of condensation products from phenol and formaldehyde with the addition of sulfonated oils.
Chenel is perfectly satisfied with the results obtained, but he points out that the success of the operation depends upon the complete conversion of the phenol into the mono-nitro derivatives.
During the subsequent combustion, the nitrogen of the amido-phenol becomes fixed in the state of ammonia.
When phenol is oxidized in acid solution by chlorine, tetrachlorquinone is obtained, a compound also obtainable from hydroquinone.
In general they are crystalline substances with a phenol (carbolic) odor.
The entire second page of the circular is given over to the results of these bacteriologic tests which compare various strengths of Tyree’s Antiseptic Powder with “mercuric bichlorid,” phenol and formaldehyde.
Report of the Council on Pharmacy and Chemistry The Council has adopted the following statement declaring Normal Phenol Serum (Cano) and Methyl-Phenol Serum (Cano) ineligible to New and Nonofficial Remedies.
Normal Phenol Serum (Cano) and Methyl-Phenol Serum (Cano) Not Accepted for N.
In the investigation, Trimethol Syrup and phenol were thus compared.
It preserves the antiseptic power of the phenol and prevents the phenol from interfering with the chemico-biological function of the white and red blood cells.
In a series of painstaking experiments[307] on bismuth, opium and phenol tablets, conducted a number of years ago in the A.
Intravenous injection of Methyl-phenol Serum alternating with intravenous injections of mercury should be given every 48 hours until infection is under control.
The two ratios thus obtained are averaged and the result is the "phenol coefficient.
These have been mentioned in discussing the putrefaction of proteins, as indol, skatol, phenol and various cresols.
It is scarcely wise to adopt the "phenol coefficient" method as a legal standard method as some states have done.
The entire wound is then covered with a dusting powder composed of zinc oxide, boric acid, exsiccated alum, phenol and camphor.
The solar surface of the foot is first thoroughly cleansed, the puncture wound is enlarged in the nonsensitive structures and the parts are then moistened with phenol or other suitable antiseptics.
The most important of these substances are creosote and phenol (carbolic acid), which occur in tar, and act in preserving smoked meat.
Phenol is a substance little soluble in water, volatile, oily, and having the characteristic smell of smoked objects.
Weigh out 1 gramme purephenol and dissolve in the medium.
If both indol and phenol appear to be present in cultivations of the same organism, it is well to separate them before testing.
It is essential that this solution should be tested before use, and this is carried out by coupling it with an alkaline phenol solution; if a dark blue oxyazo colour is formed, the solution may be used.
The original letters patent is worded as follows: 10 kilos each of crude phenol and sulphuric acid (66° Bé.
The same substances are formed when phenols are condensed with formaldehyde, especially in the presence of acid contact substances and excess of phenol by sufficiently long heating at certain temperatures.
Acetylene also lends itself to the synthesis ofphenol or carbolic acid.
Phenol (Carbolic Acid) is most extensively used in soaps of this kind, which are called carbolic soaps.
These substances impart more odor to the soap and really have more disinfecting powers than phenol when incorporated with soap.
The metallic derivatives (phenolates, phenates or carbolates) of the alkali metals are obtained by dissolving phenol in a solution of a caustic alkali, in the absence of air.
In order to obtain the phenol from this distillate, it is treated with caustic soda, which dissolves the phenol and its homologues together with a certain quantity of naphthalene and other hydrocarbons.
The acid esters ofphenol are best obtained by the action of acid chlorides or anhydrides on phenol or its sodium or potassium salt, or by digesting phenol with an acid in the presence of phosphorus oxychloride (F.
This layer is separated, and the phenol recovered by a process of fractional distillation.
Phenol dissolves readily in concentrated sulphuric acid, a mixture of phenol-ortho- and -para-sulphonic acids being formed.
The hydrogen of the hydroxyl group inphenol can be replaced by metals, by alkyl groups and by acid radicals.
When heated with aniline it yields phenol and acetanilide.
Iodphenol is obtained by the action of iodine and iodic acid on phenol dissolved in a dilute solution of caustic potash.
Other dyes derived directly or indirectly from phenol will take us back once again to toluene.
In 1860 Kolbe prepared the sodium salt of this acid by passing carbon dioxide gas into phenol in which metallic sodium had been dissolved.
Thus phenol is the lower homologue of the cresols.
This is a phenol derivative, and was first obtained as long ago as 1771 by Woulfe, by acting upon indigo with nitric acid.
The scientific development of the history of this phenol dye is full of interest, but we can only give it a passing glance.
These chemists found that a good yield of the colouring-matter was obtained by heating phenol with oxalic and sulphuric acids.
By heating phenol with caustic alkali and chloroform, the aldehyde of salicylic acid, i.
Carbolic acid or phenol belongs to a class of compounds derived from hydrocarbons of the benzene and related series by the substitution of the residue of water for hydrogen.
Defn: A phenol metameric with phloroglucin, obtained by the distillation of gallic acid as a poisonous white crystalline substance having acid properties, and hence called also pyrogallic acid.
Defn: One of a series of artificial organic dyes made as condensation products of the phenols with phthalic acid, and well represented by phenol phthaleïn.
Any one of the series of hydroxyl derivatives of which phenol proper is the type.
Defn: Pertaining to, or designating, the phenol formerly called oxyphenic acid, and now oxyphenol and pyrocatechin.
Defn: Any one of six metameric phenol derivatives of xylene, obtained as crystalline substances, (CH3)2.
Bisulphide of carbon and phenol (carbolic acid) have also been experimented with in connection with their antiseptic action on nitrification.
The proprietor of Phenol Dentifrice recommends it to the notice of those not already acquainted with its long established merits.
A phenol derivative of anthracene obtained as a white crystalline substance, which on oxidation produces a red dyestuff related to anthraquinone.
A colorless crystalline substance of the phenol series, obtained by melting certain resins, as galbanum, asafetida, etc.
The original tannin is produced by treating a sulphonated phenolwith formaldehyde.
Thus, by cultivating the lactic bacillus in the presence of those microbes which produce poisons belonging to the aromatic group, the decrease in quantity and even the disappearance of phenol and indol is observed.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "phenol" in a variety of sentences. We hope that you will now be able to make sentences using this word.
