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.
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Defn: Pertaining to, or designating, certain derivatives of phosphorous acid containing a hydrocarbon radical, and analogous to the sulphonic acid.
Defn: Of, pertaining to, or designating, an anilene sulphonic acid which is obtained as a white crystalline substance.
OH, of sulphuric acid (analogous to sulphonic acid) which is not known in the free state, but is known in its salts.
Defn: An artificial dyestuff obtained as an orange-yellow powder, and regarded as a phenyl hydrazine derivative of tartaric and sulphonic acids.
Phenol dissolves readily in concentrated sulphuric acid, a mixture of phenol-ortho- and -para-sulphonic acids being formed.
The author's application of the soda salt of the lignone sulphonic acid as a reducing agent in chrome-mordanting wool and woollen goods (D.
Of, pertaining to, or designating, an anilene sulphonic acid which is obtained as a white crystalline substance.
An artificial dyestuff obtained as an orange-yellow powder, and regarded as a phenyl hydrazine derivative of tartaric and sulphonic acids.
In general they are diazo and sulphonic acid derivatives of benzene and naphthol.
Pertaining to, or designating, certain derivatives of phosphorous acid containing a hydrocarbon radical, and analogous to the sulphonic acid.
They differ from the vegetable tannins in that they contain sulphur and sulphonic acid groups, but they agree in that both are aromatic derivatives.
Condensation by heat alone is illustrated by the method given in the same patents, thus: phenol-p-sulphonic acid is heated to 130 deg.
Perkin; the method being to sulphonate anthraquinone, and then to convert the sulphonic acid into its sodium salt and fuse this with caustic soda.
With diazobenzene sulphonic acid in the presence of alkali and a trace of sodium amalgam, a reddish-violet coloration is formed on standing (E.
An important nucleus-synthetic reaction is the saponification of nitriles, which may be obtained by the interaction of potassium cyanide with a halogen substitution derivative or a sulphonic acid.
Alizarin S is a sulphonic acid derivative of alizarin, and since it is much more soluble, it readily yields level colours.
From a chemical point of view the colouring matters themselves are of an acid character, this being due to the presence in the molecule of nitro (NO2) or sulphonic acid (HSO3) groups.
Some of those named here dye the animal fibres, even without mordants; some are Direct Colours possessing mordant-dyeing properties, others are sulphonic acid derivatives of Alizarin Colours, suitable for wool but not for cotton.
The pure substances are best obtained by fusion of the corresponding toluene sulphonic acids with potash.
It may be prepared by the fusion of para-toluene sulphonic acid with potash; by the action of nitrous acid on para-toluidine; or by heating para-oxyphenyl acetic acid with lime.
It may be prepared by fusion of ortho-toluene sulphonic acid with potash; by the action of phosphorus pentoxide on carvacrol; or by the action of zinc chloride on camphor.
The second method for obtaining free o-sulphobenzoic acid from toluene-ortho-sulphonic acid is by the conversion of the latter first into benzoic sulphinide and then into the free acid.
The conversion to the sulphamide does not take place so readily as in case of the pure o-chloride obtained from the sulphonic acid and phosphorus pentachloride.
The results of experiments showed that this afforded a practicable method of preparing toluene ortho-sulphonic acid.
Having thus obtained the toluene ortho-sulphonic acid the next step in the problem was to find a convenient method for converting this into ortho-sulph-benzoic acid.
When toluene is treated with chlorsulphonic acid there are formed besides the ortho- and para- chlorides also ortho and para sulphonic acids.
This partly neutralised sulphonic acid represents a white, pasty mass, which is not particularly easily soluble in water, yielding a solution of milky appearance.
Dihydroxybenzene, hydroquinone, was converted into the water-soluble sulphonicacid by heating it with concentrated sulphuric acid at 100° C.
C3H7OH, was converted into the water-soluble sulphonic acid by warming with concentrated sulphuric acid at 50° C.
Neradol D contains considerable amounts of soluble non-tannins, derived from salts of sulphonic and sulphuric acids, again offering a satisfactory explanation of the high ash.
The latter owe their presence to the neutralisation of the crude Neradol with caustic soda, and are composed of sodium salts of the sulphonic acid in addition to Glauber salts.
When sulphides or mercaptans in glacial acetic acid solution are heated with permanganate, the resulting sulphonic acid compounds exhibit great similarity to compounds containing free carboxyl groups.
These dyes are generally sodium salts of sulphonic acids, and need the addition of an acid to free the dye, which is the sulphonic acid.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "sulphonic" in a variety of sentences. We hope that you will now be able to make sentences using this word.
