Under the name of Kohol, an extremely fine powder, consisting of black sulphide of antimony, is used in Egypt by all classes for blackening the edges of the eyelids and the eyebrows.
By bringing the solutions together black sulphide of silver is formed, which effects the dark coloration of the hair.
It manufactures olive oil, soap, carbon sulphide and playing-cards, and has a large iron foundry.
The phosphorescence of the sulphide obtained by heating the thiosulphate is much increased by adding uranium, bismuth, or thorium before ignition (J.
Barium nitrate, Ba(NO3)2, is prepared by dissolving either the carbonate or sulphide in dilute nitric acid, or by mixing hot saturated solutions of barium chloride and sodium nitrate.
Both of the specimens emitted a strong odor of hydrogen sulphide upon removing the stopper from the respective containers.
When it has become quite bleached, wash carefully again and place in a bath composed of a dram of sulphide of ammonium to a pint of water.
The chemico-technical analysis of these products has until recently been confined to the volumetric determination of zinc by means of sodium sulphide (Schaffner's method).
During the operation the vessel is freely shaken, lumps are comminuted with a glass rod, and a few drops of the liquid are ultimately tested with hydrogen sulphide or ammonia.
The gravimetric method can be substituted by the volumetric by introducing a solution of sodium sulphide of known strength into the ammoniacal filtrate.
The filtrate is diluted till it appears cloudy, boiled to expel ammonia, tested with sodium sulphide upon the presence of zinc, and, when freed of all zinc, decanted.
The tin sulphideonly dissolves; it is filtered off and converted into stannic acid, while the lead sulphide is transformed into sulphate and weighed as such.
Von Hasselt thinks that probably chloride of silver is deposited in the rete malpighii, which is blackened by the action of light, or that sulphide of silver is formed by direct union of the silver with the sulphur of the epidermis.
The stamper battery and amalgamation processes were improved; whensulphide ores were encountered, chlorination processes were developed.
This substance is the sulphide of lead, found native in the beautiful lead ore, or Galena, of Derbyshire.
An artificial sulphide can be prepared by dry and wet processes, which is subject to gradual oxidation on exposure to the air, and consequent conversion into grey or white.
Native ultramarine consists of silica, alumina, sulphur, and soda; its colouring matter seeming to be due to hyposulphite of soda and sulphide of sodium.
Mr. Crookes, who discovered this new metal in 1861, believes that the deep orange shade observable in some specimens of sulphide of cadmium is due to the presence of thallium.
He has frequently found it, he says, in the dark-coloured varieties, and considers the variations of colour in cadmium sulphide to be owing to traces of thallium.
They have all become pale, whitish, or of a drab cast, evidently through the oxidation of the sulphur, or rather the sulphide of iron formed during the calcination.
The slight affinity of sulphur for yellow ochre, with its merely temporary effect thereon, was observed in the eighth chapter, where allusion was made to the action of sulphuretted hydrogen and sulphide of ammonium on the earth.
A sulphide of lead and antimony, of a blackish lead-gray color and metallic luster.
It is a sulphide of iron, and is remarkable for being attracted by the magnet.
A sulphide of arsenic and silver of a beautiful cochineal-red color, occurring in rhombohedral crystals, and also massive; ruby silver.
That one of a series of sulphides of any element which has the lowest proportion of sulphur; a sulphide with but one atom of sulphur in the molecule.
It is a sulphide of antimony and silver, occurring in rhombohedral crystals or massive, and is of a dark red or black color with a metallic adamantine luster.
In some cases it is a simple matter to neutralise the germicide and render it inert by washing the organisms in some non-germicidal solution (such for example as ammonium sulphide when using mercurial salts as the germicide).
How many grams of iron sulphide are necessary to prepare 100 l.
It has been seen that iron sulphide is composed of two entirely different substances,--iron and sulphur.
Certain gaseous constituents, such as hydrogen sulphide and ammonia, must also be removed.
Consequently any mass made up of iron sulphide molecules will have the same fraction of iron by weight as do the individual iron sulphide molecules.
The physical properties of the element are those of a metal, and the fact that its sulphide is precipitated by hydrogen sulphide shows that it acts like a metal in a chemical way.
Hydrosulphuric acid is prepared in the laboratory by treating a sulphidewith an acid.
When prepared by precipitation thesulphide is white.
The water still further cools the gas and at the same time partially removes such gaseous products as hydrogen sulphide and ammonia, which are soluble in water.
The sulphide is melted with scrap iron in a furnace, when the iron combines with the sulphur to form a slag, or liquid layer of melted iron sulphide, while the heavier liquid, antimony, settles to the bottom and is drawn off from time to time.
In the sulphide method, the arsenic should be in the arsenious form.
By this method of distillation the arsenic sublimes into the receiver, leaving a residue of iron sulphide in the retort.
The latter is a yellow sulphide of iron, of crystalline form, best known as "fool's gold.
Lithopone, a white pigment consisting of zinc sulphide and barium sulphate, sometimes exhibits the peculiar property of darkening on exposure to sunlight.
For example, assume that phosphorescent zinc sulphide is excited by the light from a mercury-arc.
It or one of its compounds is mixed with a phosphorescent substance such as zinc sulphide and the latter glows continuously.
It is essentially a sulphideof arsenic and copper.
It contains antimony sulphide as an important constituent.
Native sulphide of arsenic, including sandarach, or realgar, and orpiment.
A sulphide of antimony and copper, with small quantities of other metals.
A sulphideof antimony, lead, and silver, occuring in monoclinic crystals.
A sulphide of iron resembling pyrite or common iron pyrites in composition, but differing in form; white iron pyrites.
It is essentially a silicate of alumina, lime, and soda, with some sodium sulphide, is often marked by yellow spots or veins of sulphide of iron, and is much valued for ornamental work.
Sulphide of mercury in isometric form and black in color.
Red sulphide of mercury, occurring in brilliant red crystals, and also in red or brown amorphous masses.
The artificial red sulphide of mercury used as a pigment; vermilion.
Covelli, who in 1839 observed crystals of cupric sulphide encrusting Vesuvian lava, the mineral having been formed here by the interaction of hydrogen sulphide and cupric chloride, both of which are volatile volcanic products.
Below the oxidized and leached zone there is evidence of deposition of a large amount of secondary copper sulphide in the form of chalcocite.
Evidences of this secondary sulphide enrichment can be seen in many places; yet certain broad quantitative considerations raise a doubt as to whether this process has been responsible for the main portion of the values of the sulphide zone.
Under weathering conditions, the silver sulphide minerals in general are oxidized to form native silver and cerargyrite, which are relatively insoluble and remain for the most part in the oxide zone.
In some deposits, as in the copper deposits of Ray and Miami, there is found, below the secondary sulphide zone, a lean sulphide zone which is evidently of primary nature.
Stannite, a sulphide of copper, iron, and tin, is found in some of the Bolivian deposits but is rare elsewhere.
In general the processes of oxidation and secondary sulphide enrichment have been studied mainly by qualitative methods with the aid of the microscope and by considerations of possible chemical processes.
In other cases, sulphide enrichment does not appear to have contributed greatly to the values.
The iron sulphide commonly present in these ore bodies is oxidized to limonite at the surface, with the result that prospectors look for iron-stained rocks.
In general, weathering of lead ores at the surface and secondary sulphide enrichment below are not so extensive as in the case of copper and zinc.
They are simply sulphur matches tipped with a mixture of chlorate of potash and sulphide of antimony, and were ignited by drawing them briskly through a little piece of folded glass-paper.
In this connection it is also interesting to note that the ancient Arabian medical writers referred to the red sulphide of arsenic or realgar as sandarach.
The first two are checked or prevented by spraying the plants with sulphideof potassium (1 oz.
Potassium, when heated, burns in the vapour of carbon bisulphide, forming potassium sulphide and liberating carbon.
The filtrate supposed to contain phloroglucinol was treated with hydrogen sulphide to remove lead, filtered, and shaken with ether.
The reaction with ferric chloride observed whenever a lead compound of the poison is decomposed by hydrogen sulphide may be explained by the formation of traces of gallic acid or fisetin through the action of the weak acids present.
To see if the extraction with ether in the Soxhlet apparatus was complete, the residue in the thimbles was decomposed by hydrogen sulphide and shaken with ether.
Lead sulphide was filtered off, and the ether was evaporated.
The precipitate was filtered, washed, and decomposed by hydrogen sulphide in a mixture of water and ether.
Eleven and one-half grams of the resin obtained from lead precipitate A by decomposition with hydrogen sulphide were treated with 0.
Hydrogen sulphide was passed into the ether solution mixed with water to remove the lead.
A portion of this lead compound was decomposed by hydrogen sulphide in a mixture of water and ether which was well shaken during the operation.
A pistol that has been shot off has potassium sulphide from the powder in the barrel.
This weapon has neither the sulphidenor the oxide, as far as I can determine.
Phosphorous sulphide (sesquisulphide of phosphorus) is one of the substances widely employed as a substitute for yellow phosphorus in matches which will strike anywhere without the need of a specially prepared surface.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "sulphide" in a variety of sentences. We hope that you will now be able to make sentences using this word.
