Molekula
4-Chlorobenzenesulfonyl chloride
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
4-Chlorobenzenesulfonyl chloride is an aromatic sulfonyl chloride reagent widely used in organic synthesis for sulfonylation reactions, pharmaceutical intermediate production, and dye manufacturing. It serves as a key building block in creating sulfonamides, sulfonic acids, and other sulfur-containing compounds. This chemical has a CAS number of 98-60-2, a molecular formula of C6H4Cl2O2S, and a molecular weight of 211.07 g/mol. It is stored under ambient conditions but requires careful handling due to its hazardous nature, indicated by the signal word "Danger." Molekula supplies 4-Chlorobenzenesulfonyl chloride from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
On backorder — expected to ship by 25 November 2026
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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25 g — £30.90 per pack ex VAT · £37.08 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White to light yellow powder |
| Melting Point | 50 - 55 Deg C |
| Water | <0.5% |
| Identification | Conforms to reference |
| Assay | >99% |
| Free acid | <0.1% |
| Chlorobenzene | <0.5% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 108 °C |
| Transport Class | 8 |
| Packing Group | II |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 55 °C |
| Boiling Point | 141 °C at 15 mmHg |
| Vapour Pressure | 0.00117 mmHg |
Source: PubChem CID 7398 (HSDB, Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 24266104 |
| CAS Number | 98-60-2 |
| IUPAC Name | 4-chlorobenzenesulfonyl chloride |
| EC Number | 202-685-3 |
| Molecular Formula | C6H4Cl2O2S |
| Molecular Weight | 211.07 |
| Exact Mass | 209.9309 |
| SMILES | C1=CC(=CC=C1S(=O)(=O)Cl)Cl |
| InChIKey | ZLYBFBAHAQEEQQ-UHFFFAOYSA-N |
| InChI | InChI=1S/C6H4Cl2O2S/c7-5-1-3-6(4-2-5)11(8,9)10/h1-4H |
| PubChem CID | 7398 |
| UN Number | UN3261 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2904994700 |
| Tariff Code | 2904990040 |
Safety & GHS
-
Corrosive
GHS05
Hazard statements
- H303 May be harmful if swallowed
- H314 (sub cat. 1B) Causes severe skin burns and eye damage
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P284 Wear respiratory protection
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P304+341 IF INHALED: If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- 4-chlorobenzene-1-sulfonyl chloride
- 4-CHLOROPHENYLSULFONYL CHLORIDE
- Benzenesulfonyl chloride, 4-chloro-
- Benzenesulfonyl chloride, pchloro
- Chlorid kyseliny pchlorbensulfonove
- p-Chlorobenzenesulfochloride
- pChlorbenzensulfochlorid
- pChlorobenzenesulfonyl chloride
- pChlorophenylsulfonyl chloride
- ZLYBFBAHAQEEQQ-UHFFFAOYSA-
Frequently asked questions
What is 4-Chlorobenzenesulfonyl chloride commonly used for?
It is primarily used as a sulfonylating agent in organic synthesis, pharmaceuticals, and agrochemicals for introducing sulfonyl groups into molecules.
What is the chemical formula and molecular weight of 4-Chlorobenzenesulfonyl chloride?
The formula is **C₆H₄Cl₂O₂S**, and the molecular weight is **211.07 g/mol**.
How should 4-Chlorobenzenesulfonyl chloride be stored?
Store in a tightly sealed container at **ambient temperature**, away from moisture, heat, and incompatible materials.
What grades or purities are available for this product?
Molekula supplies it in **technical grade** and **reagent grade** (typically ≥98% purity).
Can Molekula supply 4-Chlorobenzenesulfonyl chloride in bulk quantities?
Yes, we offer bulk packaging options (e.g., drums, IBCs) for large-scale industrial or research needs.
What documentation is provided with an order of this product?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS/SDS)**, and **batch-specific documentation** for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.