ChemicalBook >> CAS DataBase List >>3,5-Dichlorobenzenesulfonyl chloride

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
Last updated:2026-03-10 13:22:29
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

3,5-Dichlorobenzenesulfonyl chloride Properties

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)  GHS hazard pictograms
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
0
3 0

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
Product number Packaging Price Buy
546933 25g $110 Buy
546933 5g $42.4 Buy
D3503 5g $53 Buy
D3503 25g $191 Buy
D438805 5g $60 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

Global( 223)Suppliers
Supplier Tel Email 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
3,5-Dichlorobenzenesulfonyl Chloride pictures 2026-03-20 3,5-Dichlorobenzenesulfonyl Chloride
705-21-5
US $10.00 / KG 1KG 99% 10 mt Hebei Chuanghai Biotechnology Co., Ltd
3,5-Dichlorobenzenesulfonyl chloride pictures 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
3,5-Dichlorobenzenesulfonyl chloride pictures 2019-07-06 3,5-Dichlorobenzenesulfonyl chloride
705-21-5
US $1.00 / kg 1kg 95%-99% as request Career Henan Chemical Co
BUTTPARK 95\57-48 3,5-DICHLOROBENZENESULFONYL CHLORIDE 3,5-DICHLOROBENZENE-1-SULFONYL CHLORIDE 3,5-DICHLOROBENZENESULPHONYL CHLORIDE 3,5-Dichlorobenzenesulfonyl chloride, 98% 1GR 3,5-Dichlorobenzenesulfonyl chloride, 98% 5GR 3,5-Dichlorobenzenesulfonyl chloride 97% 3,5-Dichlorobenzenesulfonyl chloride,98% 3,5-Dichlorobenzene-1-sulfonyl chloride, 95%+ 3,5-Dichlorobenzenesulfonyl c 3,5-DichlorobenzenesulfonylChloride> Benzenesulfonyl chloride, 3,5-dichloro- 3,5-Dichlorobenzenesulfonyl chloride ISO 9001:2015 REACH 13C6]-3,5-Dichlorobenzenesulfonyl chloride salt 705-21-5 05-21-5 SULFONYL CHLORIDE Building Blocks Organic Building Blocks Sulfur Compounds Sulfonyl Halides Benzenesulfonyl chloride Benzene derivates Organic Building Blocks Sulfonyl Halides Sulfur Compounds Fluorobenzene