3,5-Dichlorobenzenesulfonyl chloride
- CAS No.
- 705-21-5
- Chemical Name:
- 3,5-Dichlorobenzenesulfonyl chloride
- Synonyms
- 3,5-DICHLOROBENZENE-1-SULFONYL CHLORIDE;BUTTPARK 95\57-48;3,5-Dichlorobenzenesulfonyl c;3,5-DICHLOROBENZENESULFONYL CHLORIDE;3,5-DICHLOROBENZENESULPHONYL CHLORIDE;3,5-DichlorobenzenesulfonylChloride>Benzenesulfonyl chloride, 3,5-dichloro-;3,5-Dichlorobenzenesulfonyl chloride,98%;3,5-Dichlorobenzenesulfonyl chloride 97%;3,5-Dichlorobenzene-1-sulfonyl chloride, 95%+
- CBNumber:
- CB2218894
- Molecular Formula:
- C6H3Cl3O2S
- Molecular Weight:
- 245.51
- MDL Number:
- MFCD00051698
- MOL File:
- 705-21-5.mol
- MSDS File:
- SDS
| Product description | Number | Pack Size | Price |
| 3,5-Dichlorobenzenesulfonyl chloride 97% | 546933 | 25g | $110 |
| 3,5-Dichlorobenzenesulfonyl chloride 97% | 546933 | 5g | $42.4 |
| 3,5-Dichlorobenzenesulfonyl Chloride >98.0%(GC)(T) | D3503 | 5g | $53 |
| 3,5-Dichlorobenzenesulfonyl Chloride >98.0%(GC)(T) | D3503 | 25g | $191 |
| 3,5-Dichlorobenzenesulfonyl chloride | D438805 | 5g | $60 |
| More product size | |||
| Melting point | 32-35 °C (lit.) |
|---|---|
| Boiling point | 83-84°C 0,1mm |
| Density | 1.636±0.06 g/cm3(Predicted) |
| Flash point | >230 °F |
| storage temp. | Inert atmosphere,Room Temperature |
| solubility | soluble in Toluene |
| form | powder to lump |
| color | White to Light yellow |
| Sensitive | Moisture Sensitive |
| BRN | 1528657 |
| InChI | 1S/C6H3Cl3O2S/c7-4-1-5(8)3-6(2-4)12(9,10)11/h1-3H |
| InChIKey | RJSQINMKOSOUGT-UHFFFAOYSA-N |
| SMILES | Clc1cc(Cl)cc(c1)S(Cl)(=O)=O |
| CAS DataBase Reference | 705-21-5(CAS DataBase Reference) |
| UNSPSC Code | 12352100 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) | ![]() GHS05 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H314 | |||||||||
| Precautionary statements | P280-P305+P351+P338-P310 | |||||||||
| PPE | Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges | |||||||||
| Hazard Codes | C | |||||||||
| Risk Statements | 34 | |||||||||
| Safety Statements | 26-36/37/39-45 | |||||||||
| RIDADR | UN 1759 8/PG 2 | |||||||||
| WGK Germany | 3 | |||||||||
| Hazard Note | Corrosive/Moisture Sensitive | |||||||||
| HazardClass | 8 | |||||||||
| PackingGroup | II | |||||||||
| HS Code | 29049090 | |||||||||
| Storage Class | 8A - Combustible corrosive hazardous materials | |||||||||
| Hazard Classifications | Skin Corr. 1B | |||||||||
| Limited Quantities | 5.0 L (1.3 gallons) (liquid) or 5.0 kg (11 lbs) (solid) | |||||||||
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L) | |||||||||
| NFPA 704 |
|
3,5-Dichlorobenzenesulfonyl chloride price More Price(39)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 546933 | 3,5-Dichlorobenzenesulfonyl chloride 97% | 705-21-5 | 25g | $110 | 2023-01-07 | Buy |
| Sigma-Aldrich | 546933 | 3,5-Dichlorobenzenesulfonyl chloride 97% | 705-21-5 | 5g | $42.4 | 2022-05-15 | Buy |
| TCI Chemical | D3503 | 3,5-Dichlorobenzenesulfonyl Chloride >98.0%(GC)(T) | 705-21-5 | 5g | $53 | 2026-03-19 | Buy |
| TCI Chemical | D3503 | 3,5-Dichlorobenzenesulfonyl Chloride >98.0%(GC)(T) | 705-21-5 | 25g | $191 | 2026-03-19 | Buy |
| TRC | D438805 | 3,5-Dichlorobenzenesulfonyl chloride | 705-21-5 | 5g | $60 | 2021-12-16 | Buy |
3,5-Dichlorobenzenesulfonyl chloride Chemical Properties,Uses,Production
Chemical Properties
beige low melting solid
Uses
Based on the study using 2,5-dichlorobenzenesulfonyl chloride, 3,5-dichlorobenzenesulfonyl chloride may act as a crosslinking agent for polyamides. It could react with –NH groups to enhance thermal stability (non-melting up to 1000°C), flame retardancy, and chemical resistance, though mechanical strength may decrease.[1]
References
[1] S. A. EL-GARF S. M E K. Modifying Nylon 6 by Treating with Dichlorobenzenesulfonyl Chloride[J]. Textile Research Journal, 1997, 67 1: 13-17. DOI:10.1177/004051759706700105.
3,5-Dichlorobenzenesulfonyl chloride Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hebei Chuanghai Biotechnology Co., Ltd | +8615350571055 | Sibel@chuanghaibio.com | China | 8738 | 58 |
| Henan Fengda Chemical Co., Ltd | +86-371-86557731 +86-13613820652 | info@fdachem.com | China | 20124 | 58 |
| career henan chemical co | +86-0371-86658258 +8613203830695 | sales@coreychem.com | China | 29821 | 58 |
| Xiamen AmoyChem Co., Ltd | +86-86-5926051114 +8615060885618 | sales@amoychem.com | China | 6369 | 58 |
| Changzhou Ditong Chemical Co.,Ltd | +86-0519-88298848 | info@edengenechem.com | China | 2176 | 58 |
| Alchem Pharmtech,Inc. | 8485655694 | sales@alchempharmtech.com | United States | 63687 | 58 |
| Wuhan Chemwish Technology Co., Ltd | 027-67849912 | sales@chemwish.com | CHINA | 10821 | 58 |
| CONIER CHEM AND PHARMA LIMITED | +8618523575427 | sales@conier.com | China | 49977 | 58 |
| Antai Fine Chemical Technology Co.,Limited | 18503026267 | info@antaichem.com | CHINA | 9636 | 58 |
| Zhengzhou Alfa Chemical Co.,Ltd | +8618530059196 | sale04@alfachem.cn | China | 9546 | 58 |
View Lastest Price from 3,5-Dichlorobenzenesulfonyl chloride manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
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2026-03-20 | 3,5-Dichlorobenzenesulfonyl Chloride
705-21-5
|
US $10.00 / KG | 1KG | 99% | 10 mt | Hebei Chuanghai Biotechnology Co., Ltd | |
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2025-09-25 | 3,5-Dichlorobenzenesulfonyl chloride
705-21-5
|
US $100.00-1.00 / KG | 1KG | 99% | g-kg-tons, free sample is available | Henan Fengda Chemical Co., Ltd | |
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2019-07-06 | 3,5-Dichlorobenzenesulfonyl chloride
705-21-5
|
US $1.00 / kg | 1kg | 95%-99% | as request | Career Henan Chemical Co |
-

- 3,5-Dichlorobenzenesulfonyl Chloride
705-21-5
- US $10.00 / KG
- 99%
- Hebei Chuanghai Biotechnology Co., Ltd
-

- 3,5-Dichlorobenzenesulfonyl chloride
705-21-5
- US $100.00-1.00 / KG
- 99%
- Henan Fengda Chemical Co., Ltd
-

- 3,5-Dichlorobenzenesulfonyl chloride
705-21-5
- US $1.00 / kg
- 95%-99%
- Career Henan Chemical Co





