A rich kind of cheese, in flavour and consistence not unlike Stilton, from which, however, it differs in shape, being flatter and broader than the latter.
A fine description of cheese made in Switzerland, and largely consumed on the Continent.
From milk mixed with the juice or an infusion or decoction of sage leaves, to which marygold flowers and parsley are frequently added.
They are recognised by the following reactions:--1.
When the glucosides are hydrolyzed, they yield glucose and the hydroxyl compound of the radical with which it is united.
It is a hydroxyl derivative of propionic acid, and has both acid and alcoholic properties.
A yellow, crystalline substance, obtained from anthraquinone, and regarded as a hydroxyl derivative of it.
A manganese phosphate near triplite, but containing hydroxylinstead of fluorine.
Any one of the series of hydroxylderivatives of which phenol proper is the type.
Sir Edward Frankland showed how it could be derived from, and converted into, ethane; and thus determined it to be ethane in which one hydrogen atom was repiaced by a hydroxyl group.
Cl, the hydroxyl group being replaced by chlorine, and acid anhydrides, (R.
Alcohols are classified on two distinct principles, one depending upon the number of hydroxyl groups present, the other on the nature of the remaining groups attached to the carbon atom which carries the hydroxyl group.
It is convenient to restrict the term to compounds in which the hydroxyl group is attached to an aliphatic residue; this excludes such compounds as the hydroxy-benzenes, naphthalenes, &c.
Monatomic or monohydric alcohols contain only onehydroxyl group; diatomic, two, known as glycols (q.
Sodium or potassium dissolves in them with the formation of alcoholates, the hydrogen of the hydroxyl group being replaced by the metal.
In bating and puering the essential change is that before the process the swelling is due chiefly to adsorption of hydroxyl ions, whereas afterwards it is due chiefly to a composite lyotrope influence.
The hydrion and hydroxyl ion are particularly liable to such adsorption.
The determining factors are the nett charge of hydroxyl ions on the disperse phase, resulting from ionic adsorptions, and the lyotrope influence of dissolved substances on the continuous phase.
Moreover, we know that the hydrion and hydroxyl ion are much more readily adsorbed than other ions, i.
In liming, the nett adsorption of hydroxyl ions is the principal factor, but the lyotrope influence of the alkali cations and of the impurities is important.
Defn: Hydroxybenzoic; pertaining to, or designating, any one of several hydroxyl derivatives of benzonic acid, of which the commonest is salicylic acid.
Defn: Any one of a series of hydroxyl derivatives of naphthalene, analogous to phenol.
The one of several acids of the same element (as the phosphoric acids), which actually occurs with the greatest number of hydroxyl groups; as, orthophosphoric acid.
Defn: A manganese phosphate near triplite, but containinghydroxyl instead of fluorine.
Having less than the highest number ofhydroxyl groups; -- said of acids; as, metaphosphoric acid.
Defn: A suffix denoting that the substance in the name of which it appears belongs to the series of alcohols or hydroxyl derivatives, as carbinol, glycerol, etc.
Defn: Designating the form of silicic acid having the normal or highest number of hydroxyl groups.
The monosaccharides are all open-chain compounds containinghydroxyl groups and either an aldehyde group or a ketone group.
Defn: A yellow, crystalline substance, obtained from anthraquinone, and regarded as a hydroxylderivative of it.
The hydrogen in the hydroxyl group, as is known, may be substituted by an alkyl group.
This would then lead to curious conclusions concerning the hydroxyl group.
Expressed as here shown, both hydrogen atoms are assigned equal values, when in fact only one of the atoms is united to oxygen in form of hydroxyl, while the second is loosely attached to the univalent hydroxyl group.
For instance, an alkyl may be substituted for the hydroxyl hydrogen in an alcohol molecule, when an ether results.
Thus, by appropriate methods, it ought to become possible to introduce the alkyl groups solely into the hydroxyl group (instead of into the place of the loosely attached H-atom).
Oxychlorides would be classed with this latter category, that is, they would be looked on as water in which the free hydrogen atom has been substituted by the metal, and the hydrogen atom of the hydroxyl by chlorine.
The celluloses are in condensed hydroxyl union with the lignone, but the combination occurs by complexes of relatively large molecular weight.
C{12} unit--we conclude that 4/5 of the oxygen atoms are hydroxyl oxygen.
The substitution of a hydrogen atom by the hydroxyl group generally occasions a rise in boiling-point at about 100 deg.
Considering derivatives primarily concerned with transformations of the hydroxyl group, we may regard our typical acid as a fusion of a radical R.
A second hydroxyl group may be introduced into the residues -CH2.
Substituting one hydroxyl group into each of these residues, we obtain radicals of the type -CH2.
The nitro group behaves very similarly to the hydroxyl group.
OH, in which we will assume the hydroxyl group to occupy position 1, is converted into brombenzene, which is then converted into benzoic acid, C6H5.
By transformations of the carbonyl group, and at the same time of the hydroxyl group, many interesting types of nitrogen compounds may be correlated.
The greater the concentration of the hydroxyl ions, i.
The basic character of a solution is determined by the presence of the hydroxyl radical OH^-.
Bases may be considered as salts with the hydroxyl group, OH, replacing the acid radical.
Since all bases produce hydroxyl anions, while the cations of each are different, the properties which all bases have in common when in solution must be due to the hydroxyl ions.
From their formulas it will be seen that they may be regarded as derived from hydrocarbons by substituting the hydroxyl group (OH) for hydrogen.
But since water is almost entirely undissociated, equilibrium can only be reached when there are very few hydroxyl or hydrogen ions present.
It has the formula OH and is called the hydroxyl ion.
When a base dissolves in water the hydroxyl groups form the anions, while the metallic element forms the cations.
Water forms an appreciable number of hydrogen and hydroxyl ions, and very weak bases such as bismuth hydroxide are dissociated to but a very slight extent.
The hydrogen of the hydroxyl group in phenol can be replaced by metals, by alkyl groups and by acid radicals.
The meta-nitro-compound, which is precipitated last, is then reduced, and the amino group so formed is replaced by the hydroxyl group by means of the Sandmeyer reaction.
In other Mordant Colours there are carboxyl (COOH) as well as hydroxyl groups, which are all-important in this respect.
One of the hydroxyl groups has phenolic functions, the other alcoholic functions.
Hinsberg and Treupel have studied the physiological effect of substituting various alkyls for the hydrogen of the hydroxyl group in para-acetamido-phenol.
Entrance of hydroxyl groups in the catalytic poisons of the fatty series weakens toxic character; on the other hand, it exalts the toxicity of the substituting poisons.
So also hydrogen would tend to take a position as near as possible to hydroxyl and to carboxyl, whilehydroxyl would avoid hydroxyl, and carboxyl would avoid carboxyl.
In the solution, therefore, there is now an excess of hydroxyl ions; consequently it has an alkaline reaction and the litmus turns blue.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "hydroxyl" in a variety of sentences. We hope that you will now be able to make sentences using this word.
