Sodium methanethiosulfonate
Sodium methanethiosulfonate (CAS: 1950-85-2, Formula: CH3O2S2Na) is a chemical compound with a molecular weight of 134.15. It is primarily utilized in chemical synthesis as a reagent for forming carbon-sulfur (C-S) and carbon-non-halogen bonds. This compound finds application in various synthetic procedures requiring precise bond formation, contributing to the development of diverse organic molecules. Its properties make it a valuable tool for researchers and chemists in synthetic chemistry.
- IUPAC
- Methanesulfonothioic acid sodium salt,Sodium methylthiosulfonate
- Synonyms
- Methanesulfonothioic acid sodium saltSodium methylthiosulfonate

C-S Bond Formation
Sodium methanethiosulfonate serves as a reagent for the synthesis of carbon-sulfur bonds. This is crucial in organic chemistry for creating molecules with sulfur-containing functional groups.
C-X Bond Formation (Non-Halogen)
This compound is employed in the formation of carbon-heteroatom bonds, specifically excluding halogenated derivatives. It enables the introduction of sulfur-based functionalities into organic structures.
Chemical Synthesis
As a versatile synthetic reagent, it plays a role in various organic transformations. Its utility lies in its ability to participate in reactions that build complex molecular architectures.
Synthetic Reagents
Sodium methanethiosulfonate is a valuable addition to the repertoire of synthetic reagents used in laboratories. It facilitates specific chemical reactions and synthetic pathways.
| Molecular weight | 134.15 |
|---|---|
| Empirical formula | CH3O2S2Na |
| Assay | 95% |
| Melting point | 265 °C (dec.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Sodium methanethiosulfonate used for?
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Sodium methanethiosulfonate is used in chemical synthesis, primarily for the formation of carbon-sulfur (C-S) bonds and carbon-non-halogen bonds. It acts as a synthetic reagent in various organic transformations.
What are the CAS number and formula for Sodium methanethiosulfonate?
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The CAS number for Sodium methanethiosulfonate is 1950-85-2, and its molecular formula is CH3O2S2Na.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Sodium methanethiosulfonate with an assay of 95%. We do not represent this product as meeting pharmacopoeia standards (USP, BP, EP) unless explicitly stated in the product documentation.
How should Sodium methanethiosulfonate be handled safely?
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Sodium methanethiosulfonate is classified with hazard statements H315 (Causes skin irritation), H319 (Causes serious eye irritation), and H335 (May cause respiratory irritation). Safe handling requires wearing eye protection, gloves, and a dust mask (type N95 US). Ensure adequate ventilation.
Is Sodium methanethiosulfonate available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including Sodium methanethiosulfonate. We can fulfil international orders.
How can I request a sample or quote for Sodium methanethiosulfonate?
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To request a sample or a quote for Sodium methanethiosulfonate, please contact our sales team through the website or by phone, referencing the product name and CAS number.
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