Potassium p-toluenethiosulfonate
Potassium p-toluenethiosulfonate (CAS 28519-50-8; Formula: CH3C6H4SO2SK; Molar Mass: 226.36) is a chemical compound supplied by Tech Serve Solutions. It finds utility as a reagent in organic synthesis and in materials science research. This compound serves as a valuable building block for creating more complex molecules and is offered by TSS with a minimum assay of 97.0% (S).
- IUPAC
- p-Toluenethiosulfonic acid potassium salt,Potassium 4-methylbenzenethiosulfonate,Potassium thiotosylate

Organic Synthesis Reagent
Potassium p-toluenethiosulfonate acts as a sulfur-transfer reagent in organic synthesis. It is employed in reactions to introduce the p-toluenethio group into various organic molecules.
Materials Science Research
This compound is utilised in materials science for the development of novel materials. Its specific chemical properties make it a candidate for incorporation into polymers or other advanced material structures.
Chemical Intermediate
As a versatile chemical intermediate, Potassium p-toluenethiosulfonate can be a precursor in the synthesis of other specialty chemicals, pharmaceutical intermediates, or research compounds.
| Molecular weight | 226.36 |
|---|---|
| Linear formula | CH3C6H4SO2SK |
| Assay | ≥97.0% (S) |
| Melting point | 227-229 °C(lit.) |

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) | 26-36 |
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 Potassium p-toluenethiosulfonate used for?
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Potassium p-toluenethiosulfonate is primarily used as a reagent in organic synthesis for sulfur transfer reactions and in materials science research for developing new materials.
What is the CAS number and formula for Potassium p-toluenethiosulfonate?
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The CAS number is 28519-50-8 and the chemical formula is CH3C6H4SO2SK.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Potassium p-toluenethiosulfonate with a minimum assay of 97.0% (S). This is a technical/research grade chemical and is not supplied as USP, BP, EP, or any other pharmacopoeia standard.
What are the safety precautions for handling Potassium p-toluenethiosulfonate?
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Warning: Causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Wear a dust mask type N95 (US), eyeshields, and gloves. Avoid breathing dust. If in eyes, rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing. Ensure adequate ventilation.
How is Potassium p-toluenethiosulfonate packed, shipped, and exported?
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TSS expertly handles the packing, shipping, and global export of chemicals like Potassium p-toluenethiosulfonate, adhering to all relevant international regulations for safe transport.
How can I request a sample or a quote for Potassium p-toluenethiosulfonate?
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To request a sample or obtain a quote for Potassium p-toluenethiosulfonate, please contact our sales team through the website or call us directly.
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