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237205

Sigma-Aldrich

Potassium bicarbonate

ACS reagent, 99.7%, powder, crystals or granules

Synonym(s):

Potassium hydrogen carbonate

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About This Item

Linear Formula:
KHCO3
CAS Number:
298-14-6
Molecular Weight:
100.12
Beilstein:
4535309
EC Number:
206-059-0
MDL number:
MFCD00011402
UNSPSC Code:
12352302
PubChem Substance ID:
329752450
NACRES:
NB.24

grade

ACS reagent

Quality Level

200

Assay

99.7%
99.7-100.5% (ACS specification)

form

powder, crystals or granules

impurities

≤0.003% S compounds
≤0.01% insolubles

pH

8.2 (10.01 g/L)

anion traces

chloride (Cl-): ≤0.001%
phosphate (PO43-): ≤5 ppm

cation traces

Ca: ≤0.002%
Fe: ≤5 ppm
Mg: ≤0.001%
NH4+: ≤5 ppm
Na: ≤0.03%
heavy metals (as Pb): ≤5 ppm

SMILES string

[K+].OC([O-])=O

InChI

1S/CH2O3.K/c2-1(3)4;/h(H2,2,3,4);/q;+1/p-1

InChI key

TYJJADVDDVDEDZ-UHFFFAOYSA-M

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General description

Potassium bicarbonate is a commercially available nontoxic base frequently used as a reagent as well as a pH regulator in research and industrial applications.

Application

Potassium bicarbonate can be used as:      
  • A catalyst to synthesize dimethyl carbonate and propylene glycol from propylene oxide, supercritical carbon dioxide, and methanol. In this process, KHCO3 also acts as a drying agent.      
  • A dopant in the epoxidation of propene in the presence of silica-supported vanadium oxide as a catalyst.      
  • A carboxyl source to synthesize Z-5-alkylidene-2-oxazolidinones via Ag2CO3 catalyzed carboxylative cyclization of propargylic amines.

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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