127-08-2 Usage
Description
Potassium acetate (CH3CO2K) is the potassium salt of acetic acid, an important macromineral with various physiological functions. It is required for nerve conduction, muscle contraction, energy generation, nucleic acid synthesis, and maintaining blood pressure and normal renal function. Potassium acetate can be taken as a nutritional supplement with antihypertensive effects and prevention against hypokalemia.
Uses
1. Used in Chemical Synthesis:
Potassium acetate is used as a catalyst in the production of polyurethanes, a versatile polymer with a wide range of applications.
2. Used in Medicine:
Potassium acetate is used as a diuretic and urinary alkalizer, functioning as an alkali after absorption and changing the physical properties of body fluids. It is also used in the treatment of diabetic ketoacidosis due to its ability to break down into bicarbonate and help neutralize the acidotic state.
3. Used in Molecular Biology:
In molecular biology, potassium acetate is used to precipitate dodecyl sulfate (DS) and DS-bound proteins, allowing the removal of proteins from DNA. It is also used as a salt for the ethanol precipitation of DNA.
4. Used in Glass Manufacturing:
Potassium acetate is used in the manufacture of glass, contributing to its quality and properties.
5. Used in Paper and Textile Industries:
Potassium acetate serves as a softening agent for papers and textiles, improving their texture and feel.
6. Used as a Dehydrating Agent:
Potassium acetate acts as a dehydrating agent, helping to remove moisture from various substances.
7. Used as a Buffer:
Potassium acetate is used as a buffer in various applications, maintaining a stable pH level.
8. Used in Food Industry:
Potassium acetate is used as a food additive, serving as an acidity regulator, preservative, and firming agent. In the European Union, it is labeled by the E number E261 and is also approved for usage in the USA, Australia, and New Zealand.
9. Used as a Deicer:
Potassium acetate can be used as a deicer instead of chloride salts such as calcium chloride or magnesium chloride. It is less aggressive on soils and less corrosive, making it a preferred choice for airport runways, although it is more expensive.
10. Used in Fire Extinguishers:
Potassium acetate is the extinguishing agent used in class K fire extinguishers due to its ability to cool and form a crust over burning oils.
11. Used in Death Penalty Protocols:
Potassium acetate has been used in death penalty protocols, although this application is controversial and not widely practiced.
References
https://pubchem.ncbi.nlm.nih.gov/compound/Potassium_acetate#section=Top
https://en.wikipedia.org/wiki/Potassium_acetate
Preparation
Potassium Acetate can be prepared by treating a potassium-containing base such as potassium hydroxide or potassium carbonate with acetic acid: 2 CH3COOH + K2CO3→ 2 CH3CO2K + CO2 + H2O This sort of reaction is known as an acid-base neutralization reaction. Potassium acetate is the salt that forms along with water as acetic acid and potassium hydroxide are neutralized together. Conditions/substances to avoid are: moisture, heat, flames, ignition sources, and strong oxidizing agents.
Preparation
Potassium acetate is prepared by addition of potassium carbonate in a small volume of water to acetic acid solution, followed by evaporation and crystallization:
K2CO3+ 2CH3COOH →2CH3COOK + H2O
Flammability and Explosibility
Nonflammable
Check Digit Verification of cas no
The CAS Registry Mumber 127-08-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,2 and 7 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 127-08:
(5*1)+(4*2)+(3*7)+(2*0)+(1*8)=42
42 % 10 = 2
So 127-08-2 is a valid CAS Registry Number.
InChI:InChI=1/C2H4O2.K/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1
127-08-2Relevant articles and documents
Kinetic challenges facing oxalate, malonate, acetoacetate, and oxaloacetate decarboxylases
Wolfenden, Richard,Lewis, Charles A.,Yuan, Yang
, p. 5683 - 5685 (2011)
To compare the powers of the corresponding enzymes as catalysts, the rates of uncatalyzed decarboxylation of several aliphatic acids (oxalate, malonate, acetoacetate, and oxaloacetate) were determined at elevated temperatures and extrapolated to 25 °C. In the extreme case of oxalate, the rate of the uncatalyzed reaction at pH 4.2 was 1.1 × 10-12 s-1, implying a 2.5 × 1013-fold rate enhancement by oxalate decarboxylase. Whereas the enzymatic decarboxylation of oxalate requires O 2 and MnII, the uncatalyzed reaction is unaffected by the presence of these cofactors and appears to proceed by heterolytic elimination of CO2.
Research and development of method for potassium acetate of high purity
Fakeev,Murskii,Krasil'Shchik
, p. 1807 - 1813 (2012)
Crystallization of potassium acetate from aqueous solutions, an effect of product yield and washing of its crystals on an efficiency of purification were investigated. Behavior of KCH3COO·1.5H2O was studied in heating. Based on data of the study a technological scheme of producing anhydrous potassium acetate of high purity was developed.
Catalytic oxidation of soot over alkaline niobates
Pecchi,Cabrera,Buljan,Delgado,Gordon,Jimenez
, p. 255 - 261 (2013)
The lack of studies in the current literature about the assessment of alkaline niobates as catalysts for soot oxidation has motivated this research. In this study, the synthesis, characterization and assessment of alkaline metal niobates as catalysts for soot combustion are reported. The solids MNbO 3 (M = Li, Na, K, Rb) are synthesized by a citrate method, calcined at 450 °C, 550 °C, 650 °C, 750 °C, and characterized by AAS, N2 adsorption, XRD, O2-TPD, FTIR and SEM. All the alkaline niobates show catalytic activity for soot combustion, and the activity depends basically on the nature of the alkaline metal and the calcination temperature. The highest catalytic activity, expressed as the temperature at which combustion of carbon black occurs at the maximum rate, is shown by KNbO3 calcined at 650 °C. At this calcination temperature, the catalytic activity follows an order dependent on the atomic number, namely: KNbO3 > NaNbO3 > LiNbO3. The RbNbO3 solid do not follow this trend presumably due to the perovskite structure was not reached. The highest catalytic activity shown by of KNbO3, despite the lower apparent activation energy of NaNbO3, stress the importance of the metal nature and suggests the hypothesis that K+ ions are the active sites for soot combustion. It must be pointed out that alkaline niobate subjected to consecutive soot combustion cycles does not show deactivation by metal loss, due to the stabilization of the alkaline metal inside the perovskite structure.
Fry, H. S.,Otto, E.
, p. 1122 (1928)
Bereman, Robert D.,Baird, Donald M.,Moreland, Charles G.
, p. 59 - 62 (1983)
Cobalt-Catalyzed Acceptorless Dehydrogenation of Alcohols to Carboxylate Salts and Hydrogen
Gunanathan, Chidambaram,Kishore, Jugal,Pattanaik, Sandip,Pradhan, Deepak Ranjan
supporting information, (2020/03/03)
The facile oxidation of alcohols to carboxylate salts and H2 is achieved using a simple and readily accessible cobalt pincer catalyst (NNNHtBuCoBr2). The reaction follows an acceptorless dehydrogenation pathway and displays good functional group tolerance. The amine-amide metal-ligand cooperation in cobalt catalyst is suggested to facilitate this transformation. The mechanistic studies indicate that in-situ-formed aldehydes react with a base through a Cannizzaro-type pathway, resulting in potassium hemiacetolate, which further undergoes catalytic dehydrogenation to provide the carboxylate salts and H2