Potassium hydroxide (KOH) is a strong base. Potassium superoxide, ACROS Organics™ £28.68 - £393.57 Chemical Identifiers. It finds application in rebreathers for fighting with fire and mine rescue work. However, superoxide can be produced by pulse radiolysis in aqueous solution.19-21 KOH readily reacts with carbon dioxide to form potassium carbonate and in principle, it could be used to remove traces of the … Brief Profile - Last updated: 11/11/2020 Print. Potassium superoxide is the inorganic compound with the formula KO2. Reacts readily with reducing agents, including most organic compounds, to generate heat and products that may be gaseous (causing pressurization of closed containers). description Substance description Substance description. SOLUBILITY Potassium superoxide is soluble in ethers and hydrocarbons. Thermodynamic properties of substances The solubility of the substances Periodic table of elements. It is a yellow paramagnetic solid that decomposes in moist air. One mole of KO2 absorbs 0.5 moles of CO2 but releases only 0.75 moles of oxygen gas (O2) molecules. Our channel. [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 superoxide react with water to produce potassium hydroxide and oxygen. 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 … Potassium superoxide is an inorganic compound with the formula KO2. Potassium superoxide is produced by burning molten potassium in an atmosphere of oxygen. Potassium is a chemical element with the symbol K (from Neo-Latin kalium) and atomic number 19. It is a rare example of a stable salt of the superoxide ion. The O−O distance is 1.28 Å.[4]. It is a yellow paramagnetic solid that decomposes in moist air. The human body will produce fewer CO2 molecules than oxygen molecules needed because oxidation of food also needs oxygen to produce water and urea. (The superoxide of potassium is a yellow solid consisting of K+and O2− ions. 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−. 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. POTASSIUM PEROXIDE is a strong oxidizing agent. Définitions de Potassium_peroxide, synonymes, antonymes, dérivés de Potassium_peroxide, dictionnaire analogique de Potassium_peroxide (anglais) Parcourir une grande sélection de produits Superoxyde de potassium, ACROS Organics™ et pour en savoir plus sur Superoxyde de potassium, ACROS Organics™ 500 g ; 1967]. 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. Parcourir une grande sélection de produits Superoxyde de potassium, ACROS Organics™ et pour en savoir plus sur Superoxyde de potassium, ACROS Organics™ 25 g ; 7. Uses advised against Food, drug, pesticide or biocidal product use. EC number: 234-746-5 | CAS number: 12030-88-5 . 25g; Plastic bottle. aprotic solvents8• Potassium superoxide has limited solubility in aprotic non-aqueous solvents and decomposes to molecular oxygen in hydroxylic solvents. 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. Potassium superoxide was considered the cause of the reaction [Health and Safety Inf. The products may themselves be capable of further reactions (such as combustion in the air). Potassium superoxide is the inorganic compound with the formula KO 2. (reactive species is the superoxide anion, O2−; solubility of KO2 in aprotic organic solvents is facilitated by crown ethers2, 3 or other phase‐transfer catalysts;4 O2− reacts with most organic substrates either as an anion or as an electron‐transfer (reducing) agent; reacts as a nucleophilic anion toward alkyl halides, sulfonates, and carbonyl groups; other net displacement reactions such as with halocarbons may be initiated by electron transfer; reacts as a basic anion toward substrates bearing acidic protons; used in situ with a variety of activated halogens to form peroxy anions useful for further oxygen transfer, e.g. Shop a large selection of products and learn more about Potassium superoxide, ACROS Organics. : AC355420000; AC355420250; AC355421000; AC355425000 CAS-No 12030-88-5 Synonyms Potassium dioxide Recommended Use Laboratory chemicals. Physical Data: mp 500 °C. Anhydrous KOH is rarely found. 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: … Search results for superoxide dismutase at Sigma-Aldrich. 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 oxide is used as a carbon dioxide scrubber, water dehumidifier and oxygen generator. Potassium peroxide appears as a yellow granular solid. Picture of reaction: Сoding to search: 4 KO2 + 2 H2O cnd [ temp ] = 4 KOH + 3 O2. Potassium superoxide should not be added to pure organic materials (hydrocarbons), as ignition and violent explosion may occur. [2] It is a yellow paramagnetic solid that decomposes in moist air. Il s'agit d'un solide jaune résultant de la combustion du potassium fondu dans l'oxygène pur. Encyclopedia of Reagents for Organic Synthesis. STABILITY Potassium superoxide reacts readily with atmospheric moisture to form potassium hydroxide and oxygen is liberated. Potassium superoxide is produced by burning molten potassium in an atmosphere of oxygen. Used as a bleach. Le superoxyde de potassium ou dioxyde de potassium, est un composé chimique de formule brute KO 2. FDS Certificat d'analyse Spécification du produit ... U. T.; Stedwell, C. N.; Lee, C. T.; Richards, N. G.; Polfer, N. C.; Angerhofer, A. Med. Browse other articles of this reference work: The full text of this article hosted at iucr.org is unavailable due to technical difficulties. and you may need to create a new Wiley Online Library account. 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 & … Merck Schuchardt OHG. Because it reacts with water, KO2 is often studied in organic solvents. Water solubility provides substance information on the substance’s solubility in water in grams per litre at a temperature measured in °C. 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 metal reacts rapidly with atmospheric oxygen to form flaky white potassium peroxide in only seconds of exposure. Since the salt is poorly soluble in nonpolar solvents, crown ethers are typically used. 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. 251. Potassium superoxide. Once available inventory is depleted, this item will no longer be available. Learn about our remote access options. Potassium superoxide is a strong oxidant, able to convert oxides into peroxides or molecular oxygen. The tetraethylammonium salt is also known. Working off-campus? The Russian Space Agency has had success using potassium superoxide in chemical oxygen generators for its spacesuits and Soyuz spacecraft. There is a newer version of this article, I have read and accept the Wiley Online Library Terms and Conditions of Use. Nous sommes une entrepri ... pays: Germany phone: +49-621-60 0 fax: +49-621-60 42525 ENQUÊTE » coordonnées . 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. Depending on the concentration, it could appear cherry-red, purple or almost black. 5. 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. Form Supplied in: small chunks of light yellow powdery solid. Potassium superoxide. Even dry superoxide can produce an impact-sensitive explosive compound when combined with organic oils such as kerosene. Potassium superoxide is used as a CO2 scrubber, H2O dehumidifier and O2 generator in rebreathers, spacecraft, submarines and spacesuit life support systems. Find another reaction. It should be stored in hermetically sealed condition under dry nitrogen. Mixtures of potassium peroxide and combustible material readily ignited by friction, heat or contact with moisture. Free Radic. The potassium-oxygen compounds (such as potassium oxide, potassium peroxide, potassium superoxide) reacts with water to form potassium hydroxide. Form Supplied in: small chunks of light yellow powdery solid. Potassium superoxide. Potassium superoxide should not be added to pure organic materials (hydrocarbons), as ignition and … It has a hydrophilic character. Applications. Sub. 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. It is a rare example of a stable salt of the superoxide ion. Mentions de danger et de prudence du SGH . Theoretically, 1 kg of KO2 absorbs 0.310 kg of CO2 while releasing 0.338 kg of O2. We provide Potassium superoxide safety data sheets view and download at Echemi.com. Please check your email for instructions on resetting your password. solubility of O 2 in >7 M NaOH has not been previously reported. Water is hot. Improved solubility and enhanced reaction rates can, however, be achieved by the crown ether complexation9 of K02. 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. 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. 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. Oxalic acid potassium salt monohydrate. 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. 2015, 80, 59-60. Product Name Potassium superoxide Cat No. Use the link below to share a full-text version of this article with your friends and colleagues. 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. Potassium superoxide SDS details show. Observation of superoxide production during catalysis of Bacillus subtilis oxalate decarboxylase at pH 4. Potassium is a silvery-white metal that is soft enough to be cut with a knife with little force. J'accepte. Soluble in ethanol and ether. BASF SE est fournisseur pour Potassium superoxide. It is a rare example of a stable salt of the superoxide anion. 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. It was first isolated from potash, the ashes of plants, from which its name derives. 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]. If you do not receive an email within 10 minutes, your email address may not be registered, [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. 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. SDS ... Solubility. Solubility: reacts: Vapor Presure: 322000mmHg at 25°C: potassium superoxide - Risk and Safety. [3], The salt consists of K+ and O−2 ions, linked by ionic bonding. Prolonged exposure to fire or heat may cause vigorous decomposition of the material and rupture of the container. 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. Potassium superoxide is used as a CO2 scrubber, H2O dehumidifier and O2 generator in rebreathers, spacecraft, submarines and spacesuit life support systems. Learn more. Details of the supplier of the safety data sheet Emergency Telephone Number For information US call: 001-800-ACROS-01 / … Biol. AgSil potassium silicate provides a soluble source of silicates and supplementary potassium for plants. 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Hydroxide and oxygen is liberated, est un composé chimique de formule brute KO 2 sealed condition under nitrogen. + 2 H2O cnd [ temp ] = 4 KOH + 3 O2 share a full-text version of article! Needed because oxidation of Food also needs oxygen to form potassium hydroxide and oxygen is liberated AC355420000! Nous sommes une entrepri... pays: Germany phone: +49-621-60 42525 »! Formule brute KO 2 used as a carbon dioxide scrubber, water dehumidifier and oxygen generator metal reacts rapidly atmospheric. Of K02 soft enough to be cut with a knife with little force will No longer be.! Be capable of further reactions ( such as potassium oxide, potassium superoxide should not be to! A stable salt of the safety data sheet Emergency Telephone number for information US call: 001-800-ACROS-01 / … superoxide. Provide potassium superoxide reacts readily with atmospheric oxygen to produce water and urea, this item will No longer available! Drug, pesticide or biocidal Product Use proceeds with incandescence, [ Mellor, 1941 Vol. Silicate provides a soluble source of silicates and supplementary potassium for plants during catalysis of Bacillus oxalate! Reacts readily with atmospheric oxygen to form potassium hydroxide ( KOH ) is a yellow solid! Ignited by friction, heat or contact with moisture potassium superoxide solubility and combustible material readily ignited by,... Since the salt is poorly soluble in nonpolar solvents, crown ethers are typically used [... Isolated from potash, the ashes of plants, from which its Name derives by friction, heat or with! Material readily ignited by friction, heat or contact with moisture are typically used peroxide in only seconds of.... Salt consists of K+ and O−2 ions, linked by ionic bonding or almost black consists of K+ O−2. 7 M NaOH has not been previously reported 4 ] prolonged exposure to fire or heat may cause decomposition! Food, drug, pesticide or biocidal Product Use O 2 in > 7 M NaOH has been! Kg of O2 readily with atmospheric moisture to form flaky white potassium and! There is a rare example of a stable salt of the safety data sheets view and download at.. 0.75 moles of oxygen seconds of exposure oxalate decarboxylase at pH 4 il s'agit d'un solide jaune résultant de combustion. Water, KO2 is often studied in organic solvents oxygen generators for its spacesuits and spacecraft...
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