1-butyl-3-methylimidazolium methyl sulfate
Also known as: 1-butyl-3-methyl-3H-imidazolium methyl sulfate, 1-butyl-3-methylimidazol-3-ium methyl sulfate, 1-n-Butyl-3-methylimidazolium methyl sulfate, Basionics(R) LQ02, [BMIM][MeSO4], [BMIM][MeOSO3], [C4C1im][MeSO4], [Emim][MeSO4], MFCD03095437
1-butyl-3-methylimidazolium methyl sulfate (CAS 401788-98-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H18N2O4S and a molecular weight of 250.31500 g/mol. Key properties include a melting point of -4°C(lit.) and a density of 1.21. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 401788-98-5
- Jingsj CID
- J-47995-8
- Molecular Formula
- C9H18N2O4S
- Molecular Weight
- 250.31500 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -4°C(lit.) |
|---|---|
| Density | 1.21 |
| Exact Mass | 250.09900 |
| PSA | 83.62000 |
| LogP | 1.28650 |
| Appearance | liquid | yellow |
| Refractive Index | n20/D 1.478 |
GHS Safety & Compliance
- H314 — Causes severe skin burns and eye damage
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-butyl-3-methylimidazolium methyl sulfate?
The CAS number of 1-butyl-3-methylimidazolium methyl sulfate is 401788-98-5.
What are the molecular formula and molecular weight of 1-butyl-3-methylimidazolium methyl sulfate?
1-butyl-3-methylimidazolium methyl sulfate has molecular formula C9H18N2O4S and molecular weight 250.31500 g/mol.
Is 1-butyl-3-methylimidazolium methyl sulfate hazardous?
1-butyl-3-methylimidazolium methyl sulfate has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.
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-butyl-3-methylimidazolium methyl sulfate (CAS 401788-98-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47995-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.