Sodium methanethiosulfonate
Also known as: Methanesulfonothioic acid sodium salt, Sodium methylthiosulfonate, Methanethiosulfonic acid S-sodium salt, Methanesulfonothioic acid S-sodium salt, Sodium methanethiosulphonate
Sodium methanethiosulfonate (CAS 1950-85-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula CH3NaO2S2 and a molecular weight of 134.15300 g/mol. Key properties include a melting point of 272-273.5ºC, a boiling point of 233.3ºC at 760 mmHg and a flash point of 94.9ºC. 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.
- 1950-85-2
- Jingsj CID
- J-1360359-3
- Molecular Formula
- CH3NaO2S2
- Molecular Weight
- 134.15300 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 272-273.5ºC |
|---|---|
| Boiling Point | 233.3ºC at 760 mmHg |
| Flash Point | 94.9ºC |
| Exact Mass | 133.94700 |
| PSA | 67.82000 |
| LogP | 1.22430 |
| Storage Conditions | Refrigerator |
| Stability | Moisture Sensitive: Desiccate |
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 Sodium methanethiosulfonate?
The CAS number of Sodium methanethiosulfonate is 1950-85-2.
What are the molecular formula and molecular weight of Sodium methanethiosulfonate?
Sodium methanethiosulfonate has molecular formula CH3NaO2S2 and molecular weight 134.15300 g/mol.
Is Sodium methanethiosulfonate hazardous?
Sodium methanethiosulfonate 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 Sodium methanethiosulfonate?
For Sodium methanethiosulfonate, Upstream Products: Sodium methanesulfinate, Sodium methanesulfonate; Downstream Products: 1,4-Butanediyl bismethanethiosulfonate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Sodium methanethiosulfonate (CAS 1950-85-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1360359-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.