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Home › Liquid Colors › Green (Dissolve ounces blue vitriol)
Green (Dissolve ounces blue vitriol)
Dissolve 2 ounces blue vitriol (sulphate of copper) in 1 pint water; add sufficient bichromate of potassa to turn discovered to obviate this difficulty. Many 2658. Crimson. To 1 ounce alkanet root druggists have proposed to fill the bottles in add 1 pint oil of turpentine. Filter as directtheir windows with solutions of aniline colors, ed in No. 2648. This is used chiefly for but even these have to be renewed from time to time. Neutral metallic salts, that have neither tendency to oxydize nor to reduce, are best employed for this purpose. The receipts here given are among the very best and most the liquid green. Or: A solution of 2 ounces used for this purpose. The mixtures require blue vitriol (sulphate of copper), and 4 ounces careful filtration through powdered glass in a chloride of sodium, in 1 pint of water. Or: glass funnel. It will be found desirable to A solution of distilled verdigris, in acetic acid, make a little more liquid color than is actually and diluted with water. Or: Dissolve blue required, to replace the loss occasioned by a vitriol in water as above, and add nitric acid second filtration (performed in the same man- till it turns green. All these must be filtered ner as the first), which will probably be ne- as directed in No. 2648. cessary after exposure for a few weeks to the