Potassium Bicarbonate Properties, Molecular Formula, Applications - WorldOfChemicals

Potassium Bicarbonate Properties

Potassium Bicarbonate

Molecule Structure Image



Potassium bicarbonate is a colorless, odorless, slightly basic, salty substance. It is very rarely found in its natural form, the mineral called kalicinite. The compound is used as a source of carbon dioxide for leavening in baking, extinguishing fire in dry chemical fire extinguishers, acting as a reagent, and a strong buffering agent in medications. It is used as an additive in winemaking and as a base in foods and to regulate pH. It is a common ingredient in club soda, where it is used to soften the effect of effervescence. It is used as a fire suppression agent in some dry chemical fire extinguishers, as the principal component of the Purple-K dry chemical, and in some applications of condensed aerosol fire suppression. It is the only dry chemical fire suppression agent recognized by the National Fire Protection Association for firefighting at airport crash rescue sites. Potassium bicarbonate is an effective fungicide against powdery mildew, allowed for use in organic farming.

Chemical Properties

Acidity 10.329
Appearance White Crystals
Boiling Point 333.6 °C
CAS Number 298-14-6
Density 2.17 g/cm3
EINECS Number 206-059-0
IUPAC Name Potassium Hydrogen Carbonate
InChI 1S/CH2O3.K/c2-1(3)4;/h(H2,2,3,4);/q;+1/p-1
Melting Point 292 °C
Molar Mass 100.115 g/mol
Molecular Formula KHCO3
NFPA 704 H-1,F-0,R-0,C-NA
Other_Cations Sodium Bicarbonate;Ammonium Bicarbonate
Related Compounds Potassium Bisulfate;Potassium Hydrogen Phosphate
Solubility 33.7 g/100 ml
Synonyms Potassium Hydrogencarbonate;Monopotassium Carbonate;Purple K;Potassium Acid Carbonate;Kaligreen;Carbonic Acid Monopotassium Salt;Potassium Hydroxyformate;Potassium Hydrogen Carbonate