K2S (solution) + (n-1) S = K2(Sn) (boiling), K2S + 2S = K2(S3) [boiling,in ethanol]. The colourless solid is rarely encountered, because it reacts readily with water, a reaction that affords potassium hydrosulfide (KSH) and potassium hydroxide (KOH). MDL number MFCD00011387. K2S (solution) + O2 (air, time) = S (colloid), K2(Sn), K2SO3S. , Except where otherwise noted, data are given for materials in their. This material reacts with water to generate the highly toxic and flammable gas hydrogen sulfide, which may be ignited by the heat of reaction. Properties of potassium sulfide K2S: White, melts without decomposition.
So readily oxidized as to be pyrophoric in air [Bretherick 1979 p. 120]. K2SO4 + 4 C (coke) = K2S + 4CO (900° C). Sofern nicht anders vermerkt, sind Daten für die Materialien in ihrem gegebenen Standardzustand (bei 25 ° C [77 & deg ; F], 100 kPa). This section provides a listing of alternate names for this chemical, Lower Explosive Limit (LEL): data unavailable, Upper Explosive Limit (UEL): data unavailable, Autoignition Temperature: data unavailable, Vapor Density (Relative to Air): data unavailable, National Oceanic and Atmospheric Administration, POTASSIUM SULFIDE, WITH LESS THAN 30% WATER OF CRYSTALLIZATION, POTASSIUM SULPHIDE, WITH LESS THAN 30% WATER OF CRYSTALLIZATION. 2 Names and Identifiers Expand this section. Reactive, moist oxidized by atmospheric oxygen, joins sulfur. 1 Structures Expand this section. including trade names and synonyms. 1. p. 360. One inch of rain is equal to 10 inches of snow. K2S (solid) + 2O2 = K2SO4 (t > 500° С). White, melts without decomposition. Shimizu, Takeo. Gives off irritating or toxic fumes (or gases) in a fire. 796 potassium sulfide products are offered for sale by suppliers on Alibaba.com, of which sulfide accounts for 2%, paper chemicals accounts for 1%, and surfactants accounts for 1%. Li2S, Na2S, and Rb2S crystallize similarly..
658510 - Potassium sulfite EMAIL THIS PAGE TO A FRIEND. Contents. What is this information? Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. A wide variety of potassium sulfide options are available to you, such as chemical auxiliary agent, sulfide, and general reagents. Readily soluble in water (strong hydrolysis on the anion). Definition (britisch) potassium: Definition (amerikanisch) potassium, sulfide: Thesaurus, Synonyme, Antonyme potassium, sulfide: Etymology potassium, sulfide: das Schwefelkalium. Handbook of Preparative Inorganic Chemistry, 2nd Ed. It can be produced by heating K2SO4 with carbon (coke): In the laboratory, pure K2S may be prepared by the reaction of potassium and sulfur in anhydrous ammonia. Finely divided material may be pyrophoric in air. K2SO4 + 4H2 = K2S + 4H2O (600° С, catalyst Fe2O3). Linear Formula K 2 SO 3. NO open … 2005-08-08. 2020-10-31. POTASSIUM SULFIDE: ICSC: 0549: Dipotassium monosulfide Dipotassium sulfide Potassium monosulfide: September 1997: CAS #: 1312-73-8: UN #: 1382 EC Number: 215-197-0 ACUTE HAZARDS PREVENTION FIRE FIGHTING; FIRE & EXPLOSION: Highly flammable. 3 Chemical and Physical Properties … POTASSIUM SULFIDE K2S. National Oceanic and Atmospheric Administration. More... Molecular Weight: 158.26 g/mol. Belongs to the Following Reactive Group(s). Readily soluble in water (strong hydrolysis on the anion). Response Recommendations. Pyrotechnica Publications: Austin, 1981. https://en.wikipedia.org/w/index.php?title=Potassium_sulfide&oldid=965710745, Creative Commons Attribution-ShareAlike License, Causes skin burns. Reactive, moist oxidized by atmospheric oxygen, joins sulfur. Typical reducing agent. Edited by G. Brauer, Academic Press, 1963, NY. (NFPA, 2010) See the chemical datasheet for Hydrogen Sulfide for more information. Anhydrous powdered K2S pyrophoric in dry air. potassium sulfide. Typical reducing agent. Thermally stable. POTASSIUM SULFIDE is a reducing agent. Potassium sulfide is the inorganic compound with the formula K2S. Decomposes by acids. Potassiumsulfite. Potassium sulfide is the inorganic compound with the formula K 2 S.The colourless solid is rarely encountered, because it reacts readily with water, a reaction that affords potassium hydrosulfide (KSH) and potassium hydroxide (KOH). Substantive können mit einem Artikel … EC Number 233-321-1. Most commonly, the term potassium sulfide refers loosely to this mixture, not the anhydrous solid. National Ocean Service, 10117-38-1. Thermally stable. Belongs to the Following Reactive Group(s) Sulfides, Inorganic; Potentially Incompatible Absorbents. So readily oxidized as to be pyrophoric in air [Bretherick 1979 p. 120].
Office of Response and Restoration, , Potassium sulfides are formed when black powder is burned and are important intermediates in many pyrotechnic effects, such as senko hanabi and some glitter formulations. . A yellow-red to red crystalline mass or fused solid with an odor of rotten eggs. It is incompatible with chloroform and nitrogen oxide.
Dangerous for the environment, This page was last edited on 2 July 2020, at 23:39. Create . Decomposes by acids. USA.gov. To Email: From Email: Message: 658510 Sigma-Aldrich Potassium sulfite 90% CAS Number 10117-38-1. Web site owner: = 2 KHSO4 + SO2↑ S2↓ + H2O.
K2S + 3 H2SO4 (conc.)
Sulfide is highly basic, consequently K2S completely and irreversibly hydrolyzes in water according to the following equation: For many purposes, this reaction is inconsequential since the mixture of SH− and OH− behaves as a source of S2−. No information available. POTASSIUM SULFITE. Sulfurous acid, dipotassium salt. Other alkali metal sulfides behave similarly.
It adopts "antifluorite structure," which means that the small K+ ions occupy the tetrahedral (F−) sites in fluorite, and the larger S2− centers occupy the eight-coordinate sites. Most commonly, the term potassium sulfide refers loosely to this mixture, not the anhydrous solid. Das Substantiv Englische Grammatik. It is incompatible with chloroform and nitrogen oxide. Potassium sulphite. "Fireworks: the Art, Science, and Technique." Anhydrous powdered K2S pyrophoric in dry air. Chemical reactions with potassium sulfide K2S: K2S (diluted) + 12 H2O = 2[K(H2O)6]+ + S-2. Molecular Weight 158.26 . Vol. POTASSIUM SULFIDE is a reducing agent. Finely dispersed particles form explosive mixtures in air. PubChem Substance ID … Component Compounds: CID 1100 (Sulfurous acid) CID 5462222 (Potassium) Dates: Modify . Das Substantiv (Hauptwort, Namenwort) dient zur Benennung von Menschen, Tieren, Sachen u. Ä.
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