Kaliumhydrogencarbonat

Bezeichnung:Kaliumhydrogencarbonat

CAS-Nr298-14-6

Englisch Name:Potassium bicarbonate

CBNumberCB3260704

SummenformelCHKO3

Molgewicht100.12

MOL-Datei298-14-6.mol

Synonyma

Kaliumhydrogencarbonat

Kaliumhydrogencarbonat physikalisch-chemischer Eigenschaften

Schmelzpunkt	292 °C
Dichte	2,17 g/cm³
storage temp.	Store at +15°C to +25°C.
Löslichkeit	H₂O: 1 M at 20 °C, clear, colorless
Aggregatzustand	fine crystals
pka	10.33(at 25℃)
Farbe	White
Wichte	2.17
Geruch (Odor)	Odorless
Säure-Base-Indikators(pH-Indikatoren)	8 - 9
PH	8.27(1 mM solution);8.25(10 mM solution);8.13(100 mM solution);
Wasserlöslichkeit	Soluble in water. Insoluble in alcohol.
maximale Wellenlänge (λmax)	λ: 260 nm Amax: 0.010 λ: 280 nm Amax: 0.01
Merck	14,7609
BRN	4535309
Stabilität	Stable.
InChIKey	TYJJADVDDVDEDZ-UHFFFAOYSA-M
CAS Datenbank	298-14-6(CAS DataBase Reference)
EPA chemische Informationen	Potassium bicarbonate (298-14-6)

Sicherheit

R-Sätze:	22-35
S-Sätze:	24/25-45-36/37/39-26
WGK Germany	1
RTECS-Nr.	FG1840000
F	3
TSCA	Yes
HS Code	28364000
Toxizität	LD50 orally in Rabbit: > 2000 mg/kg

Gefahreninformationscode (GHS)

Potassium bicarbonate Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
R35:Verursacht schwere Verätzungen.
S-Sätze Betriebsanweisung:
S24/25:Berührung mit den Augen und der Haut vermeiden.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
Chemische Eigenschaften
Potassium bicarbonate occurs as colorless, transparent crystals or as a white granular or crystalline powder. It is odorless, with a saline or weakly alkaline taste.
Verwenden
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.
Verwenden
In baking powders, effervescent salts.
Verwenden
Used as a buffer.
Vorbereitung Methode
Potassium bicarbonate can be made by passing carbon dioxide into a concentrated solution of potassium carbonate, or by exposing moist potassium carbonate to carbon dioxide, preferably under moderate pressure.
Potassium bicarbonate also occurs naturally in the mineral calcinite.
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.
Allgemeine Beschreibung
Potassium bicarbonate is water soluble alkaline potassium salt with monoclinic crystalline structure. It is a raw material for the synthesis of many potassium compounds. It is a better coolant than sodium bicarbonate in the aerosol fire extinguishing apparatus. It shows potential as an antifungal agent.
Flammability and Explosibility
Non flammable
Landwirtschaftliche Anwendung
Potassium bicarbonate (KHCO₃), also called potassium hydrogen carbonate, is a white crystalline solid, soluble in water (insoluble in ethanol). It decomposes at about 120°C. Potassium bicarbonate contains about 28% potassium (K₂O) and used as a potassium supplying fertilizer.
Potassium bicarbonate, which occurs naturally as calcinite, is made by passing carbon dioxide into saturated potassium carbonate solution. It is used as baking powder and as a fire extinguisher.
Pharmazeutische Anwendungen
Alkali metal carbonates and bicarbonates have wide-ranging pharmaceutical applications. Potassium bicarbonate or citrate is used in over-the-counter drugs as active pharmaceutical ingredients (APIs) against urinary-tract infections (increasing the pH of the urine) in the United Kingdom.
Oralbicarbonate solutions such as potassium bicarbonate are typically given orally for chronic acidosis states low pH of the blood plasma. This can be again due to impaired kidney function. The use of potassium bicarbonate for the treatment of acidosis has to be carefully evaluated, as even small changes of the potassium plasma levels can have severe consequences.
Pharmazeutische Anwendungen
As an excipient, potassium bicarbonate is generally used in formulations as a source of carbon dioxide in effervescent preparations, at concentrations of 25–50% w/w. It is of particular use in formulations where sodium bicarbonate is unsuitable, for example, when the presence of sodium ions in a formulation needs to be limited or is undesirable. Potassium bicarbonate is often formulated with citric acid or tartaric acid in effervescent tablets or granules; on contact with water, carbon dioxide is released through chemical reaction, and the product disintegrates. On occasion, the presence of potassium bicarbonate alone may be sufficient in tablet formulations, as reaction with gastric acid can be sufficient to cause effervescence and product disintegration.
Potassium bicarbonate has also been investigated as a gasforming agent in alginate raft systems.The effects of potassium bicarbonate on the stability and dissolution of paracetamol and ibuprofen have been described.
Potassium bicarbonate is also used in food applications as an alkali and a leavening agent, and is a component of baking powder. Therapeutically, potassium bicarbonate is used as an alternative to sodium bicarbonate in the treatment of certain types of metabolic acidosis. It is also used as an antacid to neutralize acid secretions in the gastrointestinal tract and as a potassium supplement.
Sicherheit(Safety)
Potassium bicarbonate is used in cosmetics, foods, and oral pharmaceutical formulations, where it is generally regarded as a relatively nontoxic and nonirritant material when used as an excipient. However, excessive consumption of potassium bicarbonate or other potassium salts may produce toxic manifestations of hyperkalemia.
Lager
Potassium bicarbonate should be stored in a well-closed container in a cool, dry location. Potassium bicarbonate is stable in air at normal temperatures, but when heated to 100–200°C in the dry state, or in solution, it is gradually converted to potassium carbonate.
läuterung methode
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).
Inkompatibilitäten
Potassium bicarbonate reacts with acids and acidic salts with the evolution of carbon dioxide.
Regulatory Status
E501 refers to potassium carbonates). Included in nonparenteral medicines licensed in the UK and USA (chewable tablets; effervescent granules; effervescent tablets; lozenges; oral granules; oral suspensions; powder for oral solutions). Included in the Canadian List of Acceptable Non-medicinal Ingredients.

Potassium bicarbonate Upstream-Materialien And Downstream Produkte

Kaliumhydrogencarbonat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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