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237205

Sigma-Aldrich

Potassium bicarbonate

ACS reagent, 99.7%, powder, crystals or granules

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Synonym(s):
Potassium hydrogen carbonate
Linear Formula:
KHCO3
CAS Number:
Molecular Weight:
100.12
Beilstein:
4535309
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NB.24

grade

ACS reagent

Quality Level

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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This Item
1260260339431583
Potassium bicarbonate ACS reagent, 99.7%, powder, crystals or granules

Sigma-Aldrich

237205

Potassium bicarbonate

Essential Grade
Potassium bicarbonate puriss., meets analytical specification of Ph. Eur., BP, USP, E501, 99.5-101.0% (acidimetric)

Sigma-Aldrich

12602

Potassium bicarbonate

Essential Grade
Potassium bicarbonate BioUltra, ≥99.5% (T)

Sigma-Aldrich

60339

Potassium bicarbonate

Premium Grade
Potassium bicarbonate ≥99.95% trace metals basis, 99.7-100.5% dry basis

Sigma-Aldrich

431583

Potassium bicarbonate

-
assay

99.7%, 99.7-100.5% (ACS specification)

assay

99.5-101.0% (acidimetric)

assay

≥99.5% (T)

assay

≥99.95% trace metals basis, 99.7-100.5% dry basis

form

powder, crystals or granules

form

powder or crystals

form

powder or crystals

form

solid

impurities

≤0.003% S compounds, ≤0.01% insolubles

impurities

organic volatile impurities, complies (GC), ≤0.0005% heavy metals (as Pb), ≤0.002% ammonium (NH4)

impurities

insoluble matter, passes filter test

impurities

≤0.003% S compounds, ≤0.01% insolubles, <500 ppm total metallic impurities (excluding Na)

pH

8.2 (10.01 g/L)

pH

8.0-8.6 (20 °C, 5%)

pH

7.5-9.0 (25 °C, 1 M in H2O)

pH

-

anion traces

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

anion traces

carbonate (K2CO3): ≤2.5%, chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤100 mg/kg

anion traces

chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤50 mg/kg

anion traces

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

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


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