237205

Potassium bicarbonate

ACS reagent, 99.7%, powder, crystals or granules

• Synonym(s): Potassium hydrogen carbonate
• 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

Properties

• 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 (PO₄^3-): ≤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

Description

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.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable