Potassium bicarbonate, solubility

Derivation From m-aminophenol and potassium bicarbonate, soluble under pressure. 

Benzenetetrol. 1,2,3,5-Tetrahydroxybenzene (64) forms needles (mp 165°C) from water. The compound is easily soluble ia water, alcohol, and ethyl acetate and is iasoluble ia chloroform and benzene. In aqueous potassium bicarbonate solution sparged with carbon dioxide,... 

Potassium Carbonate Process. The potassium carbonate process is similar to the sodium carbonate process. However, as potassium bicarbonate [298-14-6] is more soluble than the corresponding sodium salt, this process permits a more efficient absorption than the other. The equipment layout is the same and the operation technique is similar. 

Partly because of their low cost, aqueous solutions of sodium or potassium carbonate also are used for CO9 and H9S. Potassium bicarbonate has the higher solubility so the potassium salt is preferred. In view of the many competitive amine and carbonate plants that are in operation, fairly close figuring apparently is required to find an economic superiority, but other intangibles may be involved. 

The solution concentration for a potassium carbonate system is limited by the solubility of the potassium bicarbonate (KHCO3) in the rich... 

Joosten, G.E.H. and Danckwerts, P.V. Solubility and difussivity of nitrous oxide in equimolar potassium carbonate-potassium bicarbonate solutions at 25 °C and 1 atm, J. Chem. Eng. Data, 17(4) 452-454, 1972. 

Potassium Bicarbonate. Potassium bicarbonate, KHC03, is made by absorption of C02 in a carbonate solution, ie, potassium hydroxide is carbonated to K CC, which in turn is carbonated to KHCO,. The changes of solubility during carbonation are presented in Figure 7. Usually the carbonate is crystallized, washed, and redissolved before carbonation and crystallization of the bicarbonate. The solutions can also be filtered. Thus, the purest carbonate is made by calcining the bicarbonate. Potassium bicarbonate is more stable than NaHC03 at normal temperatures, but KHC03... 

Potassium iodide is not easily purified by the usual methods of recrystallization because of the great solubility of the salt and because of the doubtful removal of possible traces of chloride and bromide. A very pure product may be easily prepared, however, by synthesis from pure hydriodic acid and purified potassium bicarbonate. 

Why cannot potassium bicarbonate be effectively prepared from potassium chloride by the ammonia process (Look up the solubility of potassium bicarbonate.) What process may be used to prepare potassium carbonate from this source ... 

Effervescents comprise a soluble organic acid and an alkali metal carbonate salt. Citric acid is most commonly used for its flavor-enhancing properties. Malic acid imparts a smoother after taste and fumaric, ascorbic, adipic, and tartaric acids are less commonly used [14], Sodium bicarbonate is the most common alkali, but potassium bicarbonate can be used if sodium levels are a potential issue with the formulation. Both sodium and potassium carbonate can also be employed. Other excipients include water-soluble binders such as dextrose or lactose, and binder levels are kept to a minimum to avoid retardation of disintegration. All ingredients must be anhydrous to prevent the components within the formulation reacting with each other during storage. 

Soluble, effervescent tablets are prepared by compression. In addition to active ingredients, they contain mixtures of acids (citric acid, tartaric acid) and sodium bicarbonate (NaHCOs) that release carbon dioxide when dissolved in water. The United States Pharmacopeia (USP) 24 includes the following seven monographs Acetaminophen for Effervescent Oral Solution Aspirin Effervescent Tablets for Oral Solution Potassium Bicarbonate Effervescent Tablets for Oral Solution Potassium Bicarbonate and Potassium Chloride for Effervescent Oral Solution Potassium Bicarbonate and Potassium Chloride Effervescent Tablets for Oral Solution Potassium and Sodium Bicarbonates and Citric Acid for Oral Solution and Potassium Chloride, Potassium Bicarbonate, and Potassium Citrate Effervescent Tablets for Oral Solution. ... 

Potassium bicarbonate Potassium bicarbonate (KHCO3) is very soluble in water. When heated to approximately 200°C, it is decomposed, and potassium carbonate, water, and carbon dioxide are formed. Consequently, KHCO3, is less sensitive to heat in connection with drying than is NaHC03. Above approximately 80% RH at 20°C, substantial amounts of water are adsorbed by KHCO3. 

Potassium bicarbonate [298-14-6] M lOO.I. It is crystallised from water at 65-70 (1.25mL/g) by filtering and then cooling to 15 ( 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). 

CCRIS 3510 EINECS 206-059-0 EPA Pesticide Chemical Code 073508 K-Lyte K-Lyte/CI K-Lyte DS Monopotassium carbonate Potassium acid cadronate Potassium bicarbonate Potassium hydrogen carbonate. Electrolyte replenisher. Used in pharmaceutical formulation. White crystals soluble in H2O (35.7 g/100 ml at 20°, 50 g/100 ml at 50°), insoluble in EtOH. Bristol Latioratories Mead Johnson Labs. 

In Table VI are given the analyses of the original magnesium potassium phosphate used in this experiment and of the treated cake. The data indicate that 98% of the K20 present in the MgKP04.H20 was extracted as soluble potassium bicarbonate, which could serve as raw material for production of various potassium chemicals. 

Sodium and potassium bicarbonates are less soluble than the carbonates. Magnesium, calcium, strontium and barium bicarbonates exist only in solution. Attempts to remove the water destroy the compounds... 

The secretions of the seminal vesicles vary greatly between species in their normal volumes and chemical compositions, and in the extent to which they contribute to the total seminal plasma. In comparison with prostatic secretions, vesicular fluids tend to be more alkaline, higher in dry weight, and richer in bicarbonate, potassium, acid-soluble phosphate compounds, and especially proteins and polypeptides. In several species seminal vesicle secretions contain well over 200 mg/ml of total protein which in good measure accounts for the high viscosity and stickiness of these fluids. 

The unique character of different kinds of beer (Pilsen, Dortmund, Munich, Burton-on-Trent), without doubt, can historically be ascribed to the brewing water used in those places, with residual alkalinity playing the major role. Water, low in soluble bicarbonates of calcium, magnesium, sodium or potassium, and soluble carbonates and hydroxides, is suitable for strongly-hopped light beers, such as Pilsener, while alkaline water is suitable for dark beers, such as those from Munich. 

As a result of the high-absorber temperature, the steam, which other regenerative processes require to heat the solution to stripping temperature, is not required in the hot potassium carbonate system. In addition, the need for heat-exchange equipment between the absorber and stripper is eliminated. The high temperature also increases the solubility of potassium bicarbonate, thus permitting operation with a highly concentrated solution. 

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