It is a yellow paramagnetic solid that decomposes in moist air. Potassium superoxide is the inorganic compound with the formula KO2. Potassium superoxide is a strong oxidant, able to convert oxides into peroxides or molecular oxygen. Potassium is a chemical element with the symbol K (from Neo-Latin kalium) and atomic number 19. In 1999 at Oak Ridge National Laboratory, cleanup of potassium oxides from a NaK metal leak produced an impact-sensitive explosion while saturated with mineral oil. FDS Certificat d'analyse Spécification du produit ... U. T.; Stedwell, C. N.; Lee, C. T.; Richards, N. G.; Polfer, N. C.; Angerhofer, A. The human body will produce fewer CO2 molecules than oxygen molecules needed because oxidation of food also needs oxygen to produce water and urea. Our channel. Potassium superoxide react with water to produce potassium hydroxide and oxygen. It is a rare example of a stable salt of the superoxide ion. Details of the supplier of the safety data sheet Emergency Telephone Number For information US call: 001-800-ACROS-01 / … 1967]. Potassium superoxide is an inorganic compound with the formula KO2. It finds application in rebreathers for fighting with fire and mine rescue work. 7. The lifetime of O 2 •-is strongly affected by the rates of its disproportionation and protonation reactions,16-18 and generally O 2 •-as a dissolved free ion is not obtained easily in aqueous solutions. 2015, 80, 59-60. Parcourir une grande sélection de produits Superoxyde de potassium, ACROS Organics™ et pour en savoir plus sur Superoxyde de potassium, ACROS Organics™ 25 g ; [8], Except where otherwise noted, data are given for materials in their, "Superoxide Ion: Generation and Chemical Implications", "The Crystal Structure of α-Potassium Superoxide", https://en.wikipedia.org/w/index.php?title=Potassium_superoxide&oldid=998526416, Articles with changed ChemSpider identifier, Pages using collapsible list with both background and text-align in titlestyle, Articles with disputed statements from April 2017, Articles containing unverified chemical infoboxes, Creative Commons Attribution-ShareAlike License, This page was last edited on 5 January 2021, at 19:52. Potassium metal reacts rapidly with atmospheric oxygen to form flaky white potassium peroxide in only seconds of exposure. It is a yellow paramagnetic solid that decomposes in moist air. Potassium superoxide SDS details show. The long-term stability of the generated O2•– was then investigated by dissolving potassium superoxide (KO2) in dimethyl sulfoxide (DMSO) in the presence of the corresponding IL. Free Radic. One mole of KO2 absorbs 0.5 moles of CO2 but releases only 0.75 moles of oxygen gas (O2) molecules. Sub. Representative reactions of these salts involve using superoxide as a nucleophile, e.g., in converting alkyl bromides to alcohols and acyl chlorides to diacyl peroxides.[6]. General information; Classification & Labelling & PBT assessment; Manufacture, use & exposure ; Physical & Chemical properties; Environmental fate & pathways; Ecotoxicological information; Toxicological information; Analytical methods; Guidance on safe use; Assessment reports; Reference substances; GHS; DSD - … Potassium superoxide is used as a CO2 scrubber, H2O dehumidifier and O2 generator in rebreathers, spacecraft, submarines and spacesuit life support systems. Merck Schuchardt OHG. Learn more. solubility of O 2 in >7 M NaOH has not been previously reported. Med. It was found that ILs containing [MO1,1O2]+ and [N112,1O2]+ offer a promising long-term stability of O2•– for various reactions to be used for several applications. (The superoxide of potassium is a yellow solid consisting of K+and O2− ions. Mentions de danger et de prudence du SGH . Picture of reaction: Сoding to search: 4 KO2 + 2 H2O cnd [ temp ] = 4 KOH + 3 O2. and you may need to create a new Wiley Online Library account. Since the salt is poorly soluble in nonpolar solvents, crown ethers are typically used. [3], The salt consists of K+ and O−2 ions, linked by ionic bonding. Working off-campus? If you do not receive an email within 10 minutes, your email address may not be registered, It is a rare example of a stable salt of the superoxide anion. The potassium-oxygen compounds (such as potassium oxide, potassium peroxide, potassium superoxide) reacts with water to form potassium hydroxide. [7] In 1999 at Oak Ridge National Laboratory, cleanup of potassium oxides from a NaK metal leak produced an impact-sensitive explosion while saturated with mineral oil. Handling, Storage, and Precautions: chunks of solid may be handled briefly in the atmosphere; prolonged exposure to the atmosphere results in reaction with H2O; storage should be under dry conditions such as a desiccator; reaction with H2O produces O2, H2O2, and OH−. Anhydrous KOH is rarely found. J'accepte. Form Supplied in: small chunks of light yellow powdery solid. Applications. Potassium oxide is used as a carbon dioxide scrubber, water dehumidifier and oxygen generator. Reacts readily with reducing agents, including most organic compounds, to generate heat and products that may be gaseous (causing pressurization of closed containers). 251. Notre site sauvegarde des traceurs textes (cookies) sur votre appareil afin de vous garantir de meilleurs contenus et à des fins de collectes statistiques.Vous pouvez désactiver l'usage des cookies en changeant les paramètres de votre navigateur. Il s'agit d'un solide jaune résultant de la combustion du potassium fondu dans l'oxygène pur. SOLUBILITY Potassium superoxide is soluble in ethers and hydrocarbons. AgSil potassium silicate provides a soluble source of silicates and supplementary potassium for plants. Hazard Symbols: O - Oxidizing agent C - Corrosive: Risk Codes : R14 - Reacts violently with water R35 - Causes severe burns R8 - Contact with combustible material may cause fire: Safety Description: S17 - Keep away from combustible material. Potassium superoxide should not be added to pure organic materials (hydrocarbons), as ignition and violent explosion may occur. Species Human (9973) , Species Mouse (12460) , Species Rat (84485) , Species naked mole-rat (101719392) , Species domestic guinea pig (100717267) , Species sheep (100846985) , Species Zebrafish (550489) , Species fruit fly (46035) , Species Thale Cress (837808) , Species chicken (776267) , Species cow (515022) , Species domestic … Shop a large selection of products and learn more about Potassium superoxide, ACROS Organics. Potassium superoxide; CAS Number: 12030-88-5; EC Number: 234-746-5; Linear Formula: KO2; find Sigma-Aldrich-P0647 MSDS, related peer-reviewed papers, technical documents, similar products & … Use the link below to share a full-text version of this article with your friends and colleagues. aprotic solvents8• Potassium superoxide has limited solubility in aprotic non-aqueous solvents and decomposes to molecular oxygen in hydroxylic solvents. It should be stored in hermetically sealed condition under dry nitrogen. The products may themselves be capable of further reactions (such as combustion in the air). It has a hydrophilic character. The Russian Space Agency has had success using potassium superoxide in chemical oxygen generators for its spacesuits and Soyuz spacecraft. Hydrolysis gives oxygen gas, hydrogen peroxide and potassium hydroxide: Potassium hydroxide (KOH) absorbing carbon dioxide produces carbonates: Potassium superoxide finds only niche uses as a laboratory reagent. The O−O distance is 1.28 Å.[4]. Theoretically, 1 kg of KO2 absorbs 0.310 kg of CO2 while releasing 0.338 kg of O2. Mixtures of potassium peroxide and combustible material readily ignited by friction, heat or contact with moisture. It is a rare example of a stable salt of the superoxide ion. Potassium superoxide is a potent oxidizer and can produce explosive reactions when combined with a variety of substances and compounds, including water, acids, organics, or powdered graphite. Even dry superoxide can produce an impact-sensitive explosive compound when combined with organic oils such as kerosene. EC number: 234-746-5 | CAS number: 12030-88-5 . Potassium superoxide. Potassium hydroxide (KOH) is a strong base. It was first isolated from potash, the ashes of plants, from which its name derives. KOH readily reacts with carbon dioxide to form potassium carbonate and in principle, it could be used to remove traces of the … 25g; Plastic bottle. Biol. Please check your email for instructions on resetting your password. Potassium superoxide. Other articles where Potassium superoxide is discussed: potassium: Properties, occurrence, and uses: …combustion in dry air to potassium superoxide, KO2, which is used in respiratory equipment because it liberates oxygen and removes carbon dioxide and water vapour. Depending on the concentration, it could appear cherry-red, purple or almost black. [2] It is a yellow paramagnetic solid that decomposes in moist air. Improved solubility and enhanced reaction rates can, however, be achieved by the crown ether complexation9 of K02. Potassium superoxide is produced by burning molten potassium in an atmosphere of oxygen. Water is hot. Prolonged exposure to fire or heat may cause vigorous decomposition of the material and rupture of the container. Because it reacts with water, KO2 is often studied in organic solvents. Search results for superoxide dismutase at Sigma-Aldrich. Potassium superoxide should not be added to pure organic materials (hydrocarbons), as ignition and … Oxidation of arsenic, antimony, copper, potassium, tin, or zinc proceeds with incandescence, [Mellor, 1941, Vol. It is a dark purple crystalline solid that dissolves to form a reddish-purple solution which tends to "fizz" if hot and/or not pure enough. We provide Potassium superoxide safety data sheets view and download at Echemi.com. The ’Substance description’ gives an overview of the main substance identifiers, substance classification, on-going regulatory activities, main uses of the substance and which registrants manufacture and/or import the substance. Solubility: slightly sol DMSO; crown ethers are useful for bringing KO2 into organic solvents such as DMSO,2 DMF, MeCN, THF, benzene;3 reacts rapidly with H2O and protic solvents. Browse other articles of this reference work: The full text of this article hosted at iucr.org is unavailable due to technical difficulties. KO2 has also been used in canisters for rebreathers for fire fighting and mine rescue work, but had limited use in scuba rebreathers because of its dangerously explosive reaction with water. : AC355420000; AC355420250; AC355421000; AC355425000 CAS-No 12030-88-5 Synonyms Potassium dioxide Recommended Use Laboratory chemicals. Used as a bleach. 5. Thermodynamic properties of substances The solubility of the substances Periodic table of elements. Potassium superoxide. Learn about our remote access options. Potassium superoxide, ACROS Organics™ £28.68 - £393.57 Chemical Identifiers. Parcourir une grande sélection de produits Superoxyde de potassium, ACROS Organics™ et pour en savoir plus sur Superoxyde de potassium, ACROS Organics™ 500 g ; Soluble in ethanol and ether. SDS ... Solubility. Product % K 2O % SiO 2 % H 2O Description AgSil 21 12.7 26.5 60.9 liquid pH 11.7 AgSil 25 8.3 20.8 70.9 liquid pH 11.3 AgSil 16H 32.4 52.8 14.8 hydrous powder Hydrous AgSil potassium silicate powders can be used in dry mix applications for land spreading. Le superoxyde de potassium ou dioxyde de potassium, est un composé chimique de formule brute KO 2. Observation of superoxide production during catalysis of Bacillus subtilis oxalate decarboxylase at pH 4. Nous sommes une entrepri ... pays: Germany phone: +49-621-60 0 fax: +49-621-60 42525 ENQUÊTE » coordonnées . Encyclopedia of Reagents for Organic Synthesis. Potassium superoxide is the inorganic compound with the formula KO 2. STABILITY Potassium superoxide reacts readily with atmospheric moisture to form potassium hydroxide and oxygen is liberated. epoxidations1). Enter your email address below and we will send you your username, If the address matches an existing account you will receive an email with instructions to retrieve your username, This is an outdated version. Potassium superoxide was considered the cause of the reaction [Health and Safety Inf. Solubility: slightly sol DMSO; crown ethers are useful for bringing KO 2 into organic solvents such as DMSO, 2 DMF, MeCN, THF, benzene; 3 reacts rapidly with H 2 O and protic solvents. Once available inventory is depleted, this item will no longer be available. Product Name Potassium superoxide Cat No. POTASSIUM PEROXIDE is a strong oxidizing agent. There is a newer version of this article, I have read and accept the Wiley Online Library Terms and Conditions of Use. Form Supplied in: small chunks of light yellow powdery solid. Find another reaction. Potassium superoxide is produced by burning molten potassium in an atmosphere of oxygen. Oxalic acid potassium salt monohydrate. Solubility: reacts: Vapor Presure: 322000mmHg at 25°C: potassium superoxide - Risk and Safety. However, superoxide can be produced by pulse radiolysis in aqueous solution.19-21 Définitions de Potassium_peroxide, synonymes, antonymes, dérivés de Potassium_peroxide, dictionnaire analogique de Potassium_peroxide (anglais) Potassium is a silvery-white metal that is soft enough to be cut with a knife with little force. Physical Data: mp 500 °C. description Substance description Substance description. Product Name: Potassium superoxide Synonyms: Potassium oxide ; Potassium superoxide ; Potassium dioxide ; Burntpotash ; Cacinedpotash ; K (O 2) ; Potassium oxide super ; Potassium superoxide KO 2 Molecular Formula : KO 2 Molecular Weight : 71.09 Molecular Structure: CAS NO: … Brief Profile - Last updated: 11/11/2020 Print. Potassium peroxide appears as a yellow granular solid. Water solubility provides substance information on the substance’s solubility in water in grams per litre at a temperature measured in °C. BASF SE est fournisseur pour Potassium superoxide. Potassium superoxide is used as a CO2 scrubber, H2O dehumidifier and O2 generator in rebreathers, spacecraft, submarines and spacesuit life support systems. The tetraethylammonium salt is also known. 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