Date published: 2026-5-23

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1-Methylimidazolium hydrogen sulfate (CAS 681281-87-8)

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CAS Number:
681281-87-8
Molecular Weight:
180.18
Molecular Formula:
C4H6N2•H2SO4
Supplemental Information:
This is classified as a Dangerous Good for transport and may be subject to additional shipping charges.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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1-Methylimidazolium hydrogen sulfate is a salt formed from the protonated imidazolium cation and hydrogen sulfate anion. It is a white crystalline solid highly soluble in water and polar solvents. It is also hygroscopic which can result in the formation of aqueous solutions. Its distinct physical and chemical traits have garnered considerable interest in both research and industrial sectors. This compound is versatile in scientific endeavors, being used as a solvent for cellulose dissolution, a reagent in organic compound creation, and a catalyst in multiple reactions. Additionally, it′s utilized as an electrolyte in devices like batteries and fuel cells.


1-Methylimidazolium hydrogen sulfate (CAS 681281-87-8) References

  1. 1-Methylimidazolium hydrogen sulfate catalyzed convenient synthesis of 2,5-dimethyl-N-substituted pyrroles under ultrasonic irradiation.  |  Li, D., et al. 2013. Ultrason Sonochem. 20: 1144-8. PMID: 23485559
  2. Extraction of Proanthocyanidins and Anthocyanins from Grape Skin by Using Ionic Liquids.  |  Ćurko, N., et al. 2017. Food Technol Biotechnol. 55: 429-437. PMID: 29089857
  3. Imidazole and 1-Methylimidazole Hydrogen Bonding and Nonhydrogen Bonding Liquid Dynamics: Ultrafast IR Experiments.  |  Shin, JY., et al. 2019. J Phys Chem B. 123: 2094-2105. PMID: 30727725
  4. Optimization and kinetic study of methyl laurate synthesis using ionic liquid [Hnmp]HSO4 as a catalyst.  |  Han, B., et al. 2018. R Soc Open Sci. 5: 180672. PMID: 30839696
  5. Production of 5-hydroxymethylfurfural from Japanese cedar (Cryptomeria japonica) in an ionic liquid, 1-methylimidazolium hydrogen sulfate.  |  Ito, R. and Miyafuji, H. 2021. Sci Rep. 11: 22790. PMID: 34815504

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

1-Methylimidazolium hydrogen sulfate, 100 g

sc-251524
100 g
$86.00