Trimethylsulfonium iodide
Also known as: Trimethylsulfonium iodine, Trimethylsulphonium iodide, Sulfonium, trimethyl-, iodide, Trimethylsulfoniumiodid, trimethylsulfanium iodide, trimethylsulfone iodide, Corey-Chaykovsky reagent, EINECS 218-555-4, MFCD00011632
Trimethylsulfonium iodide (CAS 2181-42-2) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C3H9IS and a molecular weight of 204.073 g/mol. Key property: a melting point of 215-220 °C(lit.). It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 2181-42-2
- Jingsj CID
- J-47912-9
- Molecular Formula
- C3H9IS
- Molecular Weight
- 204.073 g/mol
- Category
- Organohalogen Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 215-220 °C(lit.) |
|---|---|
| Exact Mass | 203.946960 |
| PSA | 25.30000 |
| Additional Property | soluble |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2930909090 |
|---|---|
| Summary | 2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Trimethylsulfonium iodide?
The CAS number of Trimethylsulfonium iodide is 2181-42-2.
What are the molecular formula and molecular weight of Trimethylsulfonium iodide?
Trimethylsulfonium iodide has molecular formula C3H9IS and molecular weight 204.073 g/mol.
Is Trimethylsulfonium iodide hazardous?
Trimethylsulfonium iodide has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of Trimethylsulfonium iodide?
For Trimethylsulfonium iodide, Upstream Products: Dimethyl sulfide, iodomethane, Diiodomethane; Downstream Products: 4-Vinyl-1,3-dioxolan-2-one, 2-(4-bromophenyl)oxirane, 1,2-epoxyheptane.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Trimethylsulfonium iodide (CAS 2181-42-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47912-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.