sulfide

sul·fide

S0873500 (sŭl′fīd′)n. Divalent sulfur, or a compound of divalent sulfur with an electropositive element or group, especially a binary compound of sulfur with a metal.

sul•fide

(ˈsʌl faɪd, -fɪd)

n. a compound of sulfur with a more electropositive element or, less often, group. [1830–40]

sul·fide

(sŭl′fīd′) A chemical compound of sulfur and another element or radical, such as hydrogen sulfide.

Thesaurus

Noun

sulfide - a compound of sulphur and some other element that is more electropositivesulphideatomic number 16, sulfur, sulphur, S - an abundant tasteless odorless multivalent nonmetallic element; best known in yellow crystals; occurs in many sulphide and sulphate minerals and even in native form (especially in volcanic regions)pyrites - any of various metallic-looking sulfides (of which pyrite is the commonest)chemical compound, compound - (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weighthydrogen sulfide - a sulfide having the unpleasant smell of rotten eggsiron disulfide - a compound containing two atoms of sulfur combined with ironcadmium sulfide - a yellow sulfide used chiefly as a pigmentzinc sulfide, zinc sulphide - a yellow to white crystalline fluorescent compound that occurs naturally as sphalerite or wurtzite and is used as a luminous pigment

Translations

Sulfid

sulfide

sulfide,

chemical compound containing sulfur and one other element or sulfur and a radicalradical,
in chemistry, group of atoms that are joined together in some particular spatial structure and that take part in most chemical reactions as a single unit. Important inorganic radicals include ammonium, NH₄; carbonate, CO₃ ; chlorate, ClO₃
..... Click the link for more information. . Sulfides may be salts or esters of hydrogen sulfidehydrogen sulfide,
chemical compound, H₂S, a colorless, extremely poisonous gas that has a very disagreeable odor, much like that of rotten eggs. It is slightly soluble in water and is soluble in carbon disulfide.
..... Click the link for more information. , H₂S, or may be formed directly, e.g., by heating a metal with sulfur. Hydrosulfides are formed when only one of the hydrogens in hydrogen sulfide is replaced with a metal or radical. Soluble metal sulfides are used in preparing dyes, in leather tanning, as depilatory compounds, and as pesticides. Sulfides of antimony, copper, lead, mercury, silver, and zinc are important as ores; the ores are often roasted, yielding sulfur dioxidesulfur dioxide,
chemical compound, SO₂, a colorless gas with a pungent, suffocating odor. It is readily soluble in cold water, sparingly soluble in hot water, and soluble in alcohol, acetic acid, and sulfuric acid.
..... Click the link for more information. and an oxide of the metal. Pyritepyrite
or iron pyrites
, pale brass-yellow mineral, the bisulfide of iron, FeS₂. It occurs most commonly in crystals (belonging to the isometric system and usually in the form of cubes and pyritohedrons) but is also found in massive, granular, and stalactite
..... Click the link for more information. is iron disulfide; tarnish on silver is mostly silver sulfide. In chemical analysis, hydrogen sulfide is often used to precipitate from a solution of metal salts certain metal sulfides that have characteristic colors and solubilities. Carbon disulfidecarbon disulfide,
CS₂, liquid organic compound; it is colorless, foul-smelling, flammable, and poisonous. It can be prepared by direct reaction of carbon, e.g., as charcoal, with sulfur. It is a widely used solvent, e.g.
..... Click the link for more information. is an important solvent for organic compounds.

Sulfide

any of several compounds of sulfur with more electropositive elements; sulfides may be regarded as salts of hydrogen sulfide, H₂S. There are two sulfide series: the normal sulfides, with the general formula M₂S, and the acid sulfides, with the general formula MHS, where M is a monovalent metal.

Sulfides of alkali metals are colorless and dissolve readily in water. Their aqueous solutions are strongly hydrolyzed and exhibit a basic reaction. The action of dilute acids on such sulfides results in liberation of H₂S. Sulfides of alkaline-earth metals are colorless, with sparing solubility in water. They liberate H₂S in humid air. In other properties they are similar to the sulfides of alkali metals. Both types of sulfides oxidize readily to sulfates.

Sulfides of heavy metals are virtually insoluble in water. Almost all of them are black or brownish black, with the exception of white ZnS, pinkish MnS, yellow CdS, reddish orange Sb₂S₃, and yellow SnS₂. The differing relationship of sulfides to acids and ammonium sulfide is used in chemical analysis.

Many elements form polysulfides, with the general formula M₂S_x. These compounds decompose upon heating, with the formation of normal sulfides. Na, K, NH⁺₄, Ca, Sr, and Ba have a particular tendency to form polysulfides.

Sulfides are obtained by (1) direct addition of elements, (2) reaction of aqueous solutions of salts with H₂S or (NH₄)₂S, (3) reaction of hydroxides with H₂S, and (4) reduction of sulfates by coal during roasting.

Many sulfides have great practical importance: Na₂S, CaS, and BaS are used in the leather industry for tanning, and polysulfides of calcium and barium are used to combat agricultural pests. In addition, PbS, CdS, and ZnS are used as semiconductor materials, and crystals of these and other sulfides are used as semiconductor laser materials. The sulfides of the alkaline-earth metals, along with ZnS and CdS, are bases for luminophors, MoS₂ is a solid lubricant, (NH₄)₂S is an important reagent in qualitative analysis, and FeS₂ is a raw material for the production of sulfuric acid.

I. K. MALINA

sulfide

[′səl‚fīd] (chemistry) Any compound with one or more sulfur atoms in which the sulfur is connected directly to a carbon, metal, or other nonoxygen atom; for example, sodium sulfide, Na₂S.

sulfide

sul·fide

sul•fide

sul·fide

sulfide

sulfide,

Sulfide

sulfide

sulfide

sulfide

sul·fide

sul·fide

sulfide

Synonyms for sulfide

noun a compound of sulphur and some other element that is more electropositive

Synonyms

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