Their alizarine is not a uniform substance, as it ought to be, if a proximate principle; for samples of it obtained in different repetitions of the process have produced very variable effects in dyeing.
This discovery of a method for preparing alizarine artificially stimulated chemists to make researches into the chemical composition, and if possible to get to know something about the molecular structure of indigo.
Anthracene was obtained from alizarine, and, after much labour, alizarine was prepared from anthracene.
If alizarinedyestuffs are to be employed, use tartaric acid as mordant, but for neutral dyestuffs add also a little alum to the dyebath.
Alizarine Cyanine G G, the dyeing being done as in the last recipe.
Alizarine Cyanine R), working at the boil for an hour and a half.
The Naphthol Blacks will also be found useful in the same way, while the greys from Anthracene Chrome Blacks and the Alizarine blacks are very good and fast.
These typical recipes are here given to show what tints may be obtained from the alizarine and the quantity of dye-stuffs required.
There is another method of using those alizarine reds that are sold in the form of powder, and which are distinguished by the letter S.
The alizarine dyes are for the most part the artificial kind made by German chemists.
Most of the weaving is in the hands of Devangas, but the dyeing of the thread is done with imported aniline and alizarine colours by the Balijas of Sigadam in Chipurupalle taluk and Balijapeta in Bobbili.
Lime water and alizarine dissolved in alcohol dye violet.
Alizarine and the caustic alkalies produce a variety of tints, from violet to purple, according to the concentration of the solutions.
The lecturer considered that the difficulties attending the manufacture of alizarine were now overcome, and with sufficient capital and competent chemists English manufacturers must be successful.
It might even replace soda for many purposes, and thus react on our alizarine industry.
Alizarine manufacturers originally found scarcity of anthracine; at present the supply is in excess of the demand, and the price during the last 18 months has fallen from 3s.
The German license became the property of the Badische Aniline Company, and the English license became the property of the predecessors of the North British Alizarine Company.
The alizarinecolors are dyed after an old method which is known to every wool dyer.
The discovery of alizarine red was soon followed by those of alizarine orange, galleine, coeruleine, and, in 1878, of alizarine blue.
Particular stress is to be laid upon the great fastness of the alizarine dyes against light and fulling.
Sanders, which very much tenders the wool, as every dyer knows, can in all cases be replaced by alizarine red and alizarine orange, making an end to the spinners' frequent complaints about too much waste.
Another advantage of alizarine blue and the other alizarinedyestuffs is that they unite with all wood colors, as well as with indigo carmine and all aniline dyestuffs.
We allude to the alizarine dyestuffs, which have long since been introduced and are largely employed in cotton dyeing and printing.
All alizarine colors (such as those of the Badische Anilin und Soda Fabrik, of Ludwigshafen and Stuttgart; Wm.
Every piece-dyer knows that the medium and dark indigo blue goods still rub off, even after eight hours' rinsing; but alizarine blue pieces are perfectly dyed through and clean after one hour of rinsing.
Fine blacks are got if after oiling the cotton is treated with sumac or tannic acid, then mordanted with iron and dyed with alizarine as usual.
A fine brown is got by a similar process to this, if instead of Alizarine blue, Alizarine orange is used in the dye-bath.
Alizarine Orange--Prepare the cotton as if for dyeing a Turkey red, but use in the dye-bath 8 to 10 per cent.
Now, unless the bleach has been thorough, the whites will be more or less stained permanently, and to avoid this cloths which are to be printed with alizarine colours are most thoroughly bleached.
This can be dyed in the same way as Turkey red, only using for full pinks 4 per cent, of alizarine in the dye-bath, or for pale pinks 1 to 2 per cent.
It is possible to dye a red with alizarine on cotton which, while being a good colour, is not quite so fast to washing, etc.
Its combination with the cotton fibre is chiefly of a physical rather than a chemical nature; it does not form colour lakes in the same way as Alizarine and Magenta do.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "alizarine" in a variety of sentences. We hope that you will now be able to make sentences using this word.
