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Potassium bicarbonate information


Potassium bicarbonate
Potassium bicarbonate
Names
IUPAC name
potassium hydrogencarbonate
Other names
potassium hydrogencarbonate, potassium acid carbonate
Identifiers
CAS Number
  • 298-14-6 checkY
3D model (JSmol)
  • Interactive image
Beilstein Reference
4535309
ChEBI
  • CHEBI:81862 checkY
ChEMBL
  • ChEMBL2106975
ChemSpider
  • 55053 checkY
DrugBank
  • DB11098
ECHA InfoCard 100.005.509 Edit this at Wikidata
EC Number
  • 206-059-0
E number E501(ii) (acidity regulators, ...)
KEGG
  • C18606
PubChem CID
  • 516893
UNII
  • HM5Z15LEBN checkY
CompTox Dashboard (EPA)
  • DTXSID0021177 Edit this at Wikidata
InChI
  • InChI=1S/CH2O3.K/c2-1(3)4;/h(H2,2,3,4);/q;+1/p-1 checkY
    Key: TYJJADVDDVDEDZ-UHFFFAOYSA-M checkY
  • InChI=1/CH2O3.K/c2-1(3)4;/h(H2,2,3,4);/q;+1/p-1
    Key: TYJJADVDDVDEDZ-REWHXWOFAA
SMILES
  • [K+].[O-]C(=O)O
Properties
Chemical formula
KHCO3
Molar mass 100.115 g/mol
Appearance white crystals
Odor odorless
Density 2.17 g/cm3
Melting point 292 °C (558 °F; 565 K) (decomposes)
Solubility in water
22.4 g/100 mL (20 °C)[1]
Solubility practically insoluble in alcohol
Acidity (pKa) 10.329[2]

6.351 (carbonic acid)[2]

Thermochemistry
Std enthalpy of
formation fH298)
-963.2 kJ/mol
Pharmacology
ATC code
A12BA04 (WHO)
Hazards[3]
GHS labelling:
Pictograms
GHS07: Exclamation mark
Signal word
Warning
Hazard statements
H315, H319, H335
Precautionary statements
P261, P264, P280, P302+P352, P304+P340, P305+P351+P338, P312, P332+P313, P362, P403+P233, P405
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
1
0
0
Flash point Non-Flammable
Lethal dose or concentration (LD, LC):
LD50 (median dose)
> 2000 mg/kg (rat, oral)
Safety data sheet (SDS) MSDS
Related compounds
Other anions
Potassium carbonate
Other cations
Sodium bicarbonate
Ammonium bicarbonate
Related compounds
Potassium bisulfate
Monopotassium phosphate
Dipotassium phosphate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)
Infobox references

Potassium bicarbonate (IUPAC name: potassium hydrogencarbonate, also known as potassium acid carbonate) is the inorganic compound with the chemical formula KHCO3. It is a white solid.[1]

A fire extinguisher containing potassium bicarbonate
  1. ^ a b H. Schultz; G. Bauer; E. Schachl; F. Hagedorn; P. Schmittinger (2005). "Potassium Compounds". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a22_039. ISBN 3-527-30673-0.
  2. ^ a b Goldberg, Robert N.; Kishore, Nand; Lennen, Rebecca M. (2003). "Thermodynamic quantities for the ionization reactions of buffers in water". In David R. Lide (ed.). CRC handbook of chemistry and physics (84th ed.). Boca Raton, FL: CRC Press. pp. 7–13. ISBN 978-0-8493-0595-5. Retrieved 6 March 2011.
  3. ^ "Potassium bicarbonate". pubchem.ncbi.nlm.nih.gov.

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