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| Product Name: | Potassium bicarbonate | | Synonyms: | Potassion bicarbonate, Ph. Eur;POTASSIUM HYDROGENCARBONATE, REAGENTPLUS , 99.99+%;POTASSIUM BICARBONATE INSECT CELL*CULTUR E TESTED;POTASSIUM HYDROGENCARBONATE, REAGENT GRADE, >=98%;POTASSIUM HYDROGEN CARBONATE EXTRA PURE, DAB, B. P. C., U. S. P.;SODIUM BICARBONATE SOLUTION, SATURATED, TECHN., S42, 50 L;POTASSIUM HYDROGEN CARBONATE PH HELV;POTASSIUM HYDROGENCARBONATE REAGENT GR& | | CAS: | 298-14-6 | | MF: | CHKO3 | | MW: | 100.12 | | EINECS: | 206-059-0 | | Product Categories: | Inorganics;Food Additives | | Mol File: | 298-14-6.mol |  |
| | Potassium bicarbonate Chemical Properties |
| Melting point | 292 °C
| | density | 2,17 g/cm3 | | storage temp. | Store at RT. | | solubility | H2O: 1 M at 20 °C, clear, colorless
| | form | fine crystals
| | pka | 10.33(at 25℃) | | color | White | | PH | 8.4-8.6 (99g/l, H2O, 20℃) | | Water Solubility | Soluble in water. Insoluble in alcohol. | | λmax | λ: 260 nm Amax: 0.010
λ: 280 nm Amax: 0.01 | | Merck | 14,7609 | | BRN | 4535309 | | Stability: | Stable. | | InChIKey | TYJJADVDDVDEDZ-UHFFFAOYSA-M | | CAS DataBase Reference | 298-14-6(CAS DataBase Reference) |
| Hazard Codes | F,T,C,Xi | | Risk Statements | 22-35 | | Safety Statements | 24/25-45-36/37/39-26 | | WGK Germany | 1
| | RTECS | FG1840000 | | F | 3 | | TSCA | Yes | | HS Code | 28364000 | | Toxicity | LD50 orally in Rabbit: > 2000 mg/kg |
| | Potassium bicarbonate Usage And Synthesis |
| description | Potassium bicarbonate for the production of potassium carbonate, potassium acetate, potassium arsenite and other raw materials, but also for food, pharmaceuticals, fire extinguisher materials, antacids, and hair/skin products.
Potassium bicarbonate has also been employed in studies of renal disorders and the relationship of muscle injury to this process. Has been shown to inhibit the growth of Aspergillus parasiticus in Czapek's agar, and also in alflatoxin synthesis.
Potassium bicarbonate is produced by reacting potassium carbonate liquid with carbon dioxide, then recrystallizing it. All equipment from production to packaging is dedicated solely to potassium bicarbonate.
Potassium bicarbonate is a widely used reagent in research. It is employed as a catalyst in synthetic fiber polymerization and olefin dehydrogenation.
Potassium bicarbonate is a bubbly medication that is used to neutralize acid in the stomach and boost potassium levels in those whose bodies are experiencing severe potassium deficiencies. Because the body requires potassium for a number of functions, it is very important to maintain normal potassium levels. However, if you are potentially taking this medication, it is important to be aware of the risks and potential side effects. | | Benefits | Sodium bicarbonate and potassium bicarbonate are key components of body tissues that help regulate the body’s acid/base balance. This formula of buffered mineral compounds can assist in reestablishing the acid/base balance when the body’s own bicarbonate reserves are depleted because of metabolic acidosis caused by adverse reactions to food or other environmental exposures.
Potassium is excellent for heart health, If a person does not have enough potassium in the body, a condition known as hypokalemia, negative symptoms can occur. These include fatigue, muscle cramping, constipation, bloating, muscle paralysis and potentially life-threatening heart rhythms, according to the Linus Pauling Institute. Taking potassium bicarbonate can help to reduce these symptoms. Potassium bicarbonate also can lower blood pressure and reduce the risk of developing kidney stones. | | Production method | Carbonation way: potassium carbonate can be used as three-grade product as well as alkali as raw materials, including potassium carbonate 40% to 60%, potassium sulfate 10% to 15%, potassium chloride 3.5%. Before feeding, it should be calcined to remove organic matter, taking advantage of the different solubility to remove potassium sulfate and potassium chloride. Addition of lime milk or magnesium carbonate can be used to remove silicon, aluminum, phosphorus and other impurities through pressure filtration. The filtrate, after evaporation, is used for preparation of potassium carbonate solution so that the total alkali concentration is 750~800 g/L (in potassium carbonate) before being sent into the carbonation tower. Carbonization is carried out at a temperature of 50 °C or higher and at a reaction pressure of 0.4 MPa with sending carbon dioxide (concentration of 30% or more). The potassium bicarbonate is continuously precipitated with increasing concentration. After 5~6h carbonation, the mother liquor was separated by crystallization, washed, centrifuged and dried at 80 ℃ to obtain the product of potassium bicarbonate. Its reaction equation is:
K2CO3 + CO2 + H2O → 2KHCO3
Ion exchange method:
The potassium chloride solution is countercurrent passed through the ion exchange column after removing calcium and magnesium, making the (R-Na) be converted into potassium type (RK). Wash with soft water to remove the chloride ions, make the ammonium bicarbonate solution flow downstream through the resin exchange column, obtaining the mixed dilute solution of potassium bicarbonate and ammonium bicarbonate. The dilute solution is mostly decomposed into potassium carbonate after evaporation decomposition. The solution is further sent to the carbonation tower for carbonation of potassium bicarbonate, and then by crystallization, separation, washing and drying to obtain the potassium bicarbonate products. Its
R-Na + KCl → R-K + NaCl
R-K + NH4HCO3 → R-NH4 + KHCO3
2KHCO3 → K2CO3 + CO2 ↑ + H2O
K2CO3 + CO2 + H2O → 2KHCO3
It is obtained through the absorption of carbon dioxide via the 80% ethanol solution of potassium hydroxide or potassium carbonate saturated solution.
K2CO3 + CO2 + H2O → 2KHCO3 | | Uses | 1,It can be used for the production of potassium carbonate, potassium acetate and potassium arsenite as well as other raw materials, but also for medicine, food, fire extinguishing agent and other industries
2,It is commonly used as analytical reagents
3,It can be used as acidity regulator and chemical leavening agent. Our country provides that it can be used to add to various types of leavening agent of food for appropriate use according to the production demand.
4,It is the raw material for the production of potassium carbonate, potassium acetate and potassium arsenite, being able to used as the extinguishing agent for oil and chemicals. It can also be used for medicine, baking powder. | | Thermal decomposition | The thermal decomposition reactions of potassium bicarbonate dispersed in the KBr pressed disk have been studied by observing the changes in the infrared spectrum of the disk with heating. In the temperature range of 140-220°, the principal reaction in a disk containing up to about 2 mg/g of solute was the decomposition of the cyclic bicarbonate dimer into two monomeric anions with a rate constant of 7.2 x 102 exp[-(14 f 2 kcal)/RT] sec-l. Some carbonate ion was also produced during this reaction, and its yield increased with increasing initial concentration of the solute. At higher reaction temperatures, the formate ion was also produced at a rate second order in the bicarbonate monomer. The rate constant was 7.6 x 10'8 exp [-(49 f 6 kcal)/RT] M-" sec-' for the temperature range 420-500°, and the reaction stoichiometry suggested one formate ion produced from each bicarbonate monomer. The rate of carbonate production in the temperature range 450-550° appeared to be second order in the bicarbonate monomer with an Arrhenius activation energy of about 20 kcal/mol, but quantitative kinetic results could not be obtained for this reaction because of inter-ference by the formate reaction.
References
Thermal Decomposition of Potassium Bicarbonate' by I. C. Hisatsune and T. Ad1
Department of Chemistry, Whitmore Laboratory, The Pennsylvania State Universitg, University Park, Pennsylvania 16802 (Received April 8, 1970) | | Toxicity | ADI is not subject to any special provision (FAO/WHO, 2001).
GRAS (FDA, § 184.1613, 2000); | | Chemical properties | It appears as colorless transparent monoclinic crystal, being soluble in water but insoluble in alcohol. | | Chemical Properties | white powder or crystals | | Uses | Used as a buffer. | | Uses | Potassium Bicarbonate is an alkali and leavening agent obtained
as colorless prisms or white powder. it is very soluble, with 1 g dis-
solving in 2.8 ml of water. upon heating, it liberates carbon dioxide
which provides leavening in baked goods. it is also used in confec-
tionary products. | | Definition | ChEBI: A potassium salt that is the monopotassium salt of carbonic acid. It has fungicidal properties and is used in organic farming for the control of powdery mildew and apple scab. | | Uses | In baking powders, effervescent salts. | | Purification Methods | It is crystallised from water at 65-70o (1.25mL/g) by filtering and then cooling to 15o (~0.4ml/g). During all operations, CO2 is passed through the stirred mixture. The crystals are sucked dry at the pump, washed with distilled water, dried in air and then over H2SO4 in an atmosphere of CO2. It is much less soluble than the carbonate in H2O (see below). |
| | Potassium bicarbonate Preparation Products And Raw materials |
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