green vitriol

So called because first made by the distillation of green vitriol.

He was known as a manufacturer of green vitriol.

Green vitriol is also a useful reagent in the identification of mushrooms.

Legal documents such as wedding certificates are signed in special thicker ink made from green vitriol, which is designed to grow darker with age.

Known since ancient times as copperas and as green vitriol, the blue-green heptahydrate is the most common form of this material.

He exclaimed, "a pungent sensation, reminds me of the taste of green vitriol when I placed my tongue between these metals."

The first dye used the normal fernambuk dye, with the addition of iron(II) sulfate or green vitriol.

The term was also applied to red vitriol (a native sulfate of cobalt), and to green vitriol (ferrous sulfate).

After heating the resulting solid to an ash, filtering and diluting, Diesbach added green vitriol (iron sulphate) to create a complex ion: ferric ferrocyanide.

Hergrom, Ceer, and Ham stood poised to sacrifice themselves as expensively as possible, though they must have known that even Haruchai were futile against so much green vitriol.

After completion of laconic epistolary compositions she abandoned the implement of calligraphy in the encaustic pigment, exposed to the corrosive action of copperas, green vitriol and nutgall.

Sulfuric acid was called "oil of vitriol" by medieval European alchemists because it was prepared by roasting "green vitriol" (iron (II) sulfate) in an iron retort.

It is a solid state process relying on common salt as the active ingredient but it is possible to use a mixture of saltpetre (KNO) and green vitriol (FeSO).

The old name, Copperas Gap, for Portslade-by-Sea suggests that the coast was used for the production of copperas or green vitriol, a form of ferrous sulphate used extensively in the textile industry.

It could then be mixed with green vitriol (ferrous sulfate) - obtained by allowing sulfate-saturated water from a spring or mine drainage to evaporate - and gum arabic from acacia trees; this combination of ingredients produced the ink.

Almost all the recipes specify as a basic ingredient tannin rich oak galls which were boiled or steeped in water to extract the tannin then combined with iron sulphate (the old names were green copperas or green vitriol).

Green vitriol is ferrous sulfate heptahydrate, FeSO7HO; blue vitriol is copper sulfate pentahydrate, CuSO5HO and white vitriol is zinc sulfate heptahydrate, ZnSO7HO.

In the writings of the alchemists we find the words misy, sory, chalcanthum applied to alum as well as to iron sulfate; and the name atramentum sutorium, which one might expect to belong exclusively to green vitriol, applied indifferently to both.

Papyrus V contains a recipe for a mystical ink made of misy (oxidized pyrite ores, a mix of copper and iron sulfates), green vitriol, oak apple, gum, and of a substance composed of 7 perfumes and 7 flowers.

As alum and green vitriol were applied to a variety of substances in common, and as both are distinguished by a sweetish and astringent taste, writers, even after the discovery of alum, do not seem to have discriminated the two salts accurately from each other.

Other authors claim that pure hydrochloric acid was first discovered by the German Benedictine monk Basil Valentine in the 15th century, by heating common salt and green vitriol, whereas others claim that there is no clear reference to the preparation of pure hydrochloric acid until the end of the sixteenth century.