243558

Potassium carbonate sesquihydrate

ACS reagent, 99%

• Linear Formula: K₂CO₃ · 1.5H₂O
• CAS Number: 6381-79-9
• Molecular Weight: 165.23
• EC Number: 209-529-3
• UNSPSC Code: 12352302
• PubChem Substance ID: 24854510
• NACRES: NA.21

Properties

• grade: ACS reagent
• assay: 98.5-101.0% (ACS specification); 99%
• form: crystals or granules; (Powder or Crystals or Granules or Chunks)
• impurities: ≤0.001% N compounds; ≤0.004% S compounds (as SO₄^2-); ≤0.005% silica; ≤0.01% NH₄OH pptd.; ≤0.01% insolubles
• loss: 14.0-16.5% loss on heating
• anion traces: chloride (Cl^-): ≤0.003%; phosphate (PO₄^3-): ≤0.001%
• cation traces: Ca: ≤0.005%; Fe: ≤5 ppm; Mg: ≤0.002%; Na: ≤0.02%; heavy metals: ≤5 ppm (by ICP-OES)
• SMILES string: O.O.O.[K+].[K+].[K+].[K+].[O-]C([O-])=O.[O-]C([O-])=O

Description

General description

Crystals of potassium carbonate sesquihydrate belong to the monoclinic crystal system and space group C2/c.

Application

Potassium carbonate sesquihydrate can be used as a sorbent for the removal of CO₂ from flue gas in precombustion process. It may be employed as a base in the cross-coupling of benzene boronic acid with benzoyl chloride in the presence of deposited Pd catalysts to give benzophenone.

It may also be used as one of the reaction components in the preparation of:

• 1,2,3-triethylimidazolium
• 1,2,3-triethyl-4-methylimidazolium
• 2-ethyl-1,3,4-trimethylimidazolium

Safety Information

• pictograms: GHS07
• signalword: Warning
• hcodes: H315,H319,H335
• pcodes: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• target_organs: Respiratory system
• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable