Tosyl Chloride is an aromatic sulfonyl chloride commonly used as a reactive intermediate in organic and pharmaceutical chemistry. Also known in technical contexts as tosyl chloride, p-toluenesulfonyl chloride, and TsCl, this compound functions by introducing the tosyl protecting group through sulfonylation reactions, enabling controlled modification of hydroxyl and amine functionalities in sulfonylation reagent processes. Identified under CAS 98-59-9, it is typically handled as a moisture-sensitive solid in industrial synthesis environments. For industrial supply, it is provided with competitive factory pricing, supports customized specifications, and is accompanied by standard documentation including MSDS, TDS, COA, with availability for bulk supply.
Tosyl Chloride CAS 98-59-9
- CAS: 98-59-9
- Synonyms: Tosyl chloride, p-Toluenesulfonyl chloride, TsCl, 4-Methylbenzenesulfonyl chloride
- Einecs: 202-684-8
- Molecular Formula: C₇H₇ClO₂S
- Grade: Industrial grade 99%
- Package: 200kg iron drum or 50kg plastic drum packaging
Product Description
Tosyl chloride
Appearance:White powder
4-Toluene sulfonyl chloride is an organic compound with the chemical formula C7H7SO2Cl, which is a white crystalline powder with a pungent odor, insoluble in water, and easily soluble in ethanol and benzene.
Flash point:110 ℃
Molecular weight ：190.647
EINECS accession number： 202-684-8
Melting point 65 to 69 °C
The boiling point is 265.3 °C
Density： 1.33 g/cm³
Main uses: mainly used as analytical reagents in industry, and also used in organic synthesis, dye preparation and molecular rearrangement reactions in hormone synthesis.
FAQ - Technical & Supply Chain
-
Q:
Do Tosyl Chloride and p‑Toluenesulfonyl chloride correspond to the same CAS number?
A: Yes. These names are used for the same chemical substance and are associated with a single CAS registry entry in academic and industrial references. -
Q:
Is Tosyl Chloride typically used as an industrial chemical intermediate rather than a finished product?
A: It is commonly used as a reactive intermediate in synthesis processes, where it serves a functional role in chemical transformations rather than as a final formulation component.
Documents and Product Support
For product review and sourcing evaluation, supporting documents can be coordinated according to the product type, inquiry stage, and order requirements.
- COA for batch-based quality reference
- TDS for key physical and chemical information
- SDS / MSDS for handling, storage, and safety reference
- Packing information for sample, trial, and bulk orders
- Technical communication based on application and specification requirements
Information to Confirm Before Quotation
Clear sourcing information helps reduce specification mismatch and allows a more accurate quotation before sample or bulk order discussion.
- Product name and CAS number
- Application or intended end use
- Required purity, grade, or specification
- Sample quantity, trial order, or bulk demand
- Preferred packing form or net weight
- Destination country or port
- Required documents or compliance expectations
Packaging, Storage, and Handling Notes
Packaging form, storage conditions, shelf life, and shipment arrangements should be confirmed according to the product characteristics, package size, and destination requirements.
Before order confirmation, buyers are advised to review the corresponding product documents and confirm whether any special storage, labeling, or handling requirements apply.
Sample, Bulk Order and Repeat Supply Support
Support can be arranged for sample discussion, bulk supply planning, packaging confirmation, and routine sourcing communication based on the actual product and order requirements.
For repeat-use formulations or long-term procurement plans, buyers may discuss specification consistency, packaging preferences, delivery expectations, and document coordination in advance.
