1-Ethyl-3-methylimidazolium methanesulfonate
Also known as: 1-Ethyl-3-methylimidazolium methylsulfonate, EMIM CH3SO3, [C2MIm]MS, BASIONIC ST 35, BASIONIC(R) ST 35, BASIONIC(TM) ST 35, 1-Ethyl-3-methyl-1H-imidazol-3-ium methanesulfonate, 3-Ethyl-1-methyl-1H-imidazol-3-ium methanesulfonate, MFCD06798171
1-Ethyl-3-methylimidazolium methanesulfonate (CAS 145022-45-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H14N2O3S and a molecular weight of 206.263 g/mol. Key properties include a melting point of 35ºC, a boiling point of 363ºC at 760 mmHg, a density of 1.247 and a flash point of 67ºC. It is classified under GHS with signal word Warning and hazard statements H317 — May cause an allergic skin reaction and H412 — Harmful to aquatic life with long lasting effects. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 145022-45-3
- Jingsj CID
- J-1991029-3
- Molecular Formula
- C7H14N2O3S
- Molecular Weight
- 206.263 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 35ºC |
|---|---|
| Boiling Point | 363ºC at 760 mmHg |
| Density | 1.247 |
| Flash Point | 67ºC |
| Exact Mass | 206.072510 |
| PSA | 74.39000 |
| LogP | 0.57470 |
| Vapor Pressure | 2.95E-06mmHg at 25°C |
| Refractive Index | 1.4970 |
| Additional Property | Soluble in water. Soluble in acetone, methanol . |
GHS Safety & Compliance
- H317 — May cause an allergic skin reaction
- H412 — Harmful to aquatic life with long lasting effects
Customs & Trade Information
| HS Code | 2933290090 |
|---|---|
| Summary | 2933290090. other compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 1-Ethyl-3-methylimidazolium methanesulfonate?
The CAS number of 1-Ethyl-3-methylimidazolium methanesulfonate is 145022-45-3.
What are the molecular formula and molecular weight of 1-Ethyl-3-methylimidazolium methanesulfonate?
1-Ethyl-3-methylimidazolium methanesulfonate has molecular formula C7H14N2O3S and molecular weight 206.263 g/mol.
Is 1-Ethyl-3-methylimidazolium methanesulfonate hazardous?
1-Ethyl-3-methylimidazolium methanesulfonate has GHS signal word Warning and hazard statements H317 — May cause an allergic skin reaction; H412 — Harmful to aquatic life with long lasting effects.
What are the upstream and downstream products of 1-Ethyl-3-methylimidazolium methanesulfonate?
For 1-Ethyl-3-methylimidazolium methanesulfonate, Upstream Products: Dimethyl sulfite, 1-Ethyl-3-methylimidazolium chloride, Methanesulfonic acid; Downstream Products: 1-methylimidazole, 1-Ethylimidazole.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-Ethyl-3-methylimidazolium methanesulfonate (CAS 145022-45-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1991029-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.