If the red color of the wool is due to archil or cudbear, it is extracted by hydrochloric acid, which is colored red.
If these precautions are observed, magenta can be distinguished fromarchil with certainty according to König's method.
If a wine colored with archil and one colored with cudbear are treated treated according to Romei's method, the former gives, with basic lead acetate, a blue, and the latter a fine violet precipitate.
If the red color is due to magenta, it is destroyed by both these reagents, while hydrocholoric acid does not decolorize the solutions of archil and cudbear, and ammonia turns their red color to a purple violet.
Archil may be regarded as the English, cudbear as the Scotch, and litmus as the Dutch name for one and the same substance, extracted from several species of lichens by various processes.
Soluble in water and alcohol, this colouring principle yields by precipitation with chloride of calcium a compound known as 'Solid French Purple', a pigment more stable than the archil colours generally, but all too fugitive for the palette.
The manufacture of Archil and Cudbear from the various lichens is simple in principle.
Decoctions of archiland cochineal, thickened with starch: to the paste, alum and perchloride of tin are added.
It is sufficient here to point out how white silks are passed through the archil bath.
The watery solution of archil applied to cold marble, penetrates it, communicating a beautiful violet colour, or a blue bordering on purple, which resists the air much longer than the archil colours applied to other substances.
Silk is dyed a fugitive violet with eitherarchil or brazil wood; but a fine fast violet, first by a crimson with cochineal, without tartar or tin mordant, and after washing, it is dipped in the indigo vat.
Hellot says, that having employed archil on wool boiled with tartar and alum, the colour resisted the air no more than what had received no preparation.
Holland from the species of lichen called Lecanora tartarea, Roccella tartarea, by a process which has been kept secret, but which is undoubtedly analogous to that for making archil and cudbear.
In this case, by mixing the archilwith other colouring substances, dyes may be obtained which have lustre with sufficient durability.
Since more solid dyes of the same shade have been invented, the archil has gone much into disuse.
Instead of the cochineal, archil or cutbear, with a little galls or sumach, may be used.
Prepared archil gives out its colour very readily to water, ammonia, and alcohol.
The infusion of archil is of a crimson bordering on violet.
A crimson red is obtained by adding to the decoction of archil a little salt of tin (muriate), and passing the cloth through the bath, after it has been prepared by a mordant of tin and tartar.
The fine soft tint induced upon much of the black cloth by means of archil is also deceptive.
In the preparation of archil liquor the principles which yield the dye are separated from the ligneous tissue of the lichens, agitated with a hot ammoniacal solution, and exposed to the action of air.
If archil paste is to be made this paste is mixed with a strong ammoniacal solution, and agitated in an iron cylinder heated by steam to about 140 deg.
French purple or lime lake is a lichen dye prepared by a modification of the archil process, and is a more brilliant and durable colour than the other.
Defn: Pertaining to, or designating, a dibasic acid of the oxalic series found in archil (Roccella tinctoria, etc.
For the deeper shades, when expense is an object, a little archil is commonly added to the first and second bath.
It was prepared by diazotising a nitro-derivative of aniline, and acting with the diazo-salt on napthionic acid, and this dye is still used to some extent under the name of "archil substitute.
Put three table-spoonfuls of archil into a wash-hand basin of hot water, in which soak the stockings until they become of a lilac shade, when rinse them lightly in cold water.
Red is obtained from madder, and Brazil wood; the article being first dipped in weak alum and water, then in the dye, and lastly in a decoction of archil and water, to give it a bloom.
Archil is employed to give a bloom to pinks, whites, &c.
Archil is also one of the most important dyestuffs used by the feather dyer, principally entering into the composition of garnet, plum, brown, etc.
If your sample to match be more on the brown shade, a very little archil, not more than one-half the prescribed quantity must be used; and if more on the purple or plum, add more archil than the quantity specified.
If quite a dark shade of cardinal be required, add to bath about a tablespoonful of extract of archil and let remain in a little longer, or a few drops of diluted violet in bath will answer instead.
The manufacture of archil was for centuries carried on in wooden troughs.
Mix a bath of one ounce of turmeric to one ounce of archil and half the old logwood bath; bring to a boil and enter feathers, letting them remain in bath about six minutes; take out and rinse.
If you have an old garnet bath on hand, it will answer for maroon by bringing to a boil and adding about a teaspoonful more extract of archil to it.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "archil" in a variety of sentences. We hope that you will now be able to make sentences using this word.
