One libra of crushed saltpetre is mixed with one libra of orpiment similarly ground to powder, and the two are cooked in an iron pan until they liquefy; they are then poured out, and after cooling are again ground to powder.
Muffle Tegula Muffel Latin, literally "Roof-tile" Operculum Operculum Helm oder Helmet or cover alembick for a distillation jar Orpiment Auripigmentum Operment Yellow sulphide p.
There is also a flux which separates sulphur, orpiment and realgar from metalliferous ore.
Orpiment and realgar are the yellow and red arsenical sulphides.
Inasmuch as orpiment and realgar are both arsenical sulphides, the use of iron "slag," if it contains enough iron, would certainly matte the sulphur and arsenic.
Both realgar and orpiment were important for pigments, medicinal purposes, and poisons among the Ancients.
Orpiment was undoubtedly employed, as is obvious from what Pliny says on the subject: but Davy found no traces of it among the yellow colours which he examined.
Orpiment occasions tumours and dropsies, and the bitter stars induce fever.
It consists of 1 part orpimentand 6 parts of lime slaked to a powder.
Now, orpiment is one of the colours of the second category, carmine lake one of the third.
According to Dr Paris, this compound consists of lard medicated with orpiment (native yellow sulphuret of arsenic).
Dissolve as much of the best orpiment in solution of ammonia as it will take up, then steep the pieces therein for some hours; lastly, take them out and dry them in a warm place, when they will turn yellow.
The finest kinds of native orpiment are reserved for artists; the inferior are used for the indigo vat.
About 3 pounds of either white arsenic or orpiment is enough for one thousand parts of soft lead, and about 8 for the coarser kinds.
This metal occurs native, in the state of oxide, and also combined with sulphur under the improper name of yellow and red arsenic, or orpiment and realgar.
Genuine orpiment is often adulterated with an ill-made compound; which is sold in this country by the preposterous name of king's yellow.
Occasionally one ounce of orpiment is taken to eight ounces of quicklime, or two to twelve, or three to fifteen; the last mixture being of course the most active.
Orange orpiment contains more arsenic and less sulphur than the yellow, and is of course highly poisonous.
The Orpiment reflected more Light than did any other of the Powders, and therefore conduced more to the Whiteness of the compounded Colour than they.
To Orpiment I added by little and little a certain full bright purple, which Painters use, until the Orpiment ceased to be yellow, and became of a pale red.
Orpiment may be lowered with vermilion, but cannot be heightened, because it stains all other colours.
As orpiment is poisonous, it would be better to use a few drops of vitriolic acid for this purpose, which should be introduced into a small quantity of the suspected liquor.
Put some quicklime and red orpiment in water, place some warm ashes under it for a whole day, filter the liquor, and cork it down.
In order to detect the litharge or sugar of lead, a few drops of the solution of yellow orpiment and quicklime should be poured into a glass of wine.
Meuder has observed, that a pyrophorus is obtained, when equal parts of orpiment and iron-filings are sublimed together, and ten parts of this sublimate are triturated in a mortar along with twelve of nitrate of silver.
The action of the orpimentis of a less certain character, and its use is even dangerous when applied to a highly sensitive or an abraded surface.
Orpiment (sulphide of arsenic) forms the principal ingredient in many fashionable depilatories, but its use is not free from danger.
This pigment is properly the native green carbonate or bicarbonate of copper (malachite) ground to powder, either with or without the addition of a little orpiment or chrome yellow.
Orange-coloured grounds may be formed by mixing vermilion or red lead with King's yellow, or orange lake or red orpiment (?
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "orpiment" in a variety of sentences. We hope that you will now be able to make sentences using this word.
