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2-Chloro-5-nitrobenzenesulfonic acid

2-Chloro-5-nitrobenzenesulfonic acid Structure
2-Chloro-5-nitrobenzenesulfonic acid structure
CAS No.
96-73-1
Chemical Name:
2-Chloro-5-nitrobenzenesulfonic acid
Synonyms
NSC 5375;3-Sulfo-4-chloronitrobenzene;2-CHLORO-5-NITROSULFOBENZENE;2-chloro-5-nitro-benzenesulfonicaci;4-NITROCHLOROBENZENE-2-SULFONIC ACID;2-Chloro-5-nitrobenzenesulfonec acid;P-NITROCHLOROBENZENE-O-SULFONIC ACID;2-Chloro-5-nitrobenzenesulfonic acid;2-CHLORO-5-NITROBENZENESULPHONIC ACID;1-Chloro-4-nitrobenzene-2-sulfonic Acid
CBNumber:
CB7113158
Molecular Formula:
C6H4ClNO5S
Molecular Weight:
237.62
MDL Number:
MFCD00065336
MOL File:
96-73-1.mol
MSDS File:
SDS
Last updated:2026-09-12 18:54:27
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2-Chloro-5-nitrobenzenesulfonic acid Properties

Melting point >300°C
Density 1.651 (estimate)
refractive index 1.6000 (estimate)
storage temp. Refrigerator
form solid
pka -1.73±0.33(Predicted)
CAS DataBase Reference 96-73-1(CAS DataBase Reference)
EPA Substance Registry System Benzenesulfonic acid, 2-chloro-5-nitro- (96-73-1)

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H317-H319
Precautionary statements  P280-P305+P351+P338
TSCA  TSCA listed

2-Chloro-5-nitrobenzenesulfonic acid price

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Biosynth FC20131 2-Chloro-5-nitro-benzenesulfonic acid 96-73-1 5g $900 2026-06-04 Buy
Biosynth FC20131 2-Chloro-5-nitro-benzenesulfonic acid 96-73-1 2g $900 2026-06-04 Buy
Biosynth FC20131 2-Chloro-5-nitro-benzenesulfonic acid 96-73-1 25g $900 2026-06-04 Buy
Biosynth FC20131 2-Chloro-5-nitro-benzenesulfonic acid 96-73-1 1g $900 2026-06-04 Buy
Biosynth FC20131 2-Chloro-5-nitro-benzenesulfonic acid 96-73-1 10g $900 2026-06-04 Buy
Product number Packaging Price Buy
FC20131 5g $900 Buy
FC20131 2g $900 Buy
FC20131 25g $900 Buy
FC20131 1g $900 Buy
FC20131 10g $900 Buy

2-Chloro-5-nitrobenzenesulfonic acid Chemical Properties, Uses, Production

Chemical Properties

Tan Solid

Physical properties

2-Chloro-5-nitrobenzenesulfonic Acid, crystallizes as the dihydrate from water (mp 169 ℃, decomp.). The compound undergoes explosive decomposition when heated above 200 ℃, and all reactions, including its production, must be undertaken with great caution.

Uses

Amination of 2-Chloro-5-nitrobenzenesulfonic Acid gives 4-nitroaniline- 2-sulfonic acid [96-75-3], which is used as a diazo component or reduced to the important colorant intermediate 2,5-diaminobenzenesulfonic acid [88-45-9]. Chlorination of 2-Chloro-5-nitrobenzenesulfonic Acid in aqueous solution is a more facile route to 2,6- dichloro-4-nitroaniline than chlorination of 4-nitroaniline.

Production Methods

4-Chloronitrobenzene is sulfonated with 65 % oleum at 115 ℃; special precaution must be taken to control temperature. Work-up is by quenching and isolation of the sodium salt after it has been salted out.

References

[1] J. Appl. Chem. USSR (Engl. Transl.), 1990, vol. 63, # 7.2, p. 1442 - 1445
[2] Zhurnal Prikladnoi Khimii (Sankt-Peterburg, Russian Federation), 1990, vol. 63, # 7, p. 1568 - 1571
[3] European Journal of Medicinal Chemistry, 2012, vol. 50, p. 18 - 26

2-Chloro-5-nitrobenzenesulfonic acid Preparation Products And Raw materials

Raw materials

Fuming sulfuric acid 4-Chloronitrobenzene

Preparation Products

4.4'-Diaminodiphenylaminesulfate O-(2-MethoxyEthoxy)BenzeneSulfonamide Acid Brown 354 Amoscanate Reactive Blue 198
4-Nitro-2-sulfoaniline 4-Diazo-4'-methoxydiphenylamine sulfate disodium 2,2'-[(2-methyl-3,6-dioxo-1,4-cyclohexadiene-1,4-diyl)bis[imino(2-methyl-4,1-phenylene)imino]]bis(5-nitrobenzenesulphonate) Benzenesulfonamide, 2-(methylamino)-5-nitro- 4-Chloro-3-(Morpholinosulfonyl)aniline

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2-Chloro-5-nitrobenzenesulfonic acid Suppliers

Global Suppliers ( 131)
Supplier Tel Email Country ProdList Advantage
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
3B Pharmachem (Wuhan) International Co.,Ltd. 18930552037 3bsc@sina.com China 15813 69
Shanghai Hanhong Scientific Co.,Ltd. 021-54306202 13764082696 info@hanhongsci.com China 42917 64
Chemsky（shanghai）International Co.,Ltd. 021-50135380 shchemsky@sina.com China 32273 50
Tianjin heowns Biochemical Technology Co., Ltd. 400 638 7771 sales@heowns.com China 14412 57
Quzhou Juhua Friendship Co., Ltd 0570-3066667 China 3922 58
DKMbiochem.Co. Ltd 15901859516 sales@DKMbiochem.com China 361 58
Finetech Industry Limited 027-87465837 19945049750 sales@finetechnology-ind.com China 9331 58
Hubei Jusheng Technology Co.,Ltd 027-59599241 18871490274 1400878000@qq.com China 9506 58
Shanghai YuanYe Biotechnology Co., Ltd. 15026964105 2881489226@qq.com China 89667 60
Supplier Advantage
J & K SCIENTIFIC LTD. 76
3B Pharmachem (Wuhan) International Co.,Ltd. 69
Shanghai Hanhong Scientific Co.,Ltd. 64
Chemsky（shanghai）International Co.,Ltd. 50
Tianjin heowns Biochemical Technology Co., Ltd. 57
Quzhou Juhua Friendship Co., Ltd 58
DKMbiochem.Co. Ltd 58
Finetech Industry Limited 58
Hubei Jusheng Technology Co.,Ltd 58
Shanghai YuanYe Biotechnology Co., Ltd. 60

View Latest Price from 2-Chloro-5-nitrobenzenesulfonic acid manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
2-CHLORO-5-NITROBENZENESULFONIC ACID pictures 2026-08-13 2-CHLORO-5-NITROBENZENESULFONIC ACID
96-73-1
 1KG 75% 20000 Shenzhen Nexcon Pharmatechs Ltd.
2-CHLORO-5-NITROBENZENESULFONIC ACID pictures 2026-03-20 2-CHLORO-5-NITROBENZENESULFONIC ACID
96-73-1
 $10.00 1KG 99% 100 mt Hebei Chuanghai Biotechnology Co., Ltd
2-CHLORO-5-NITROBENZENESULFONIC ACID pictures 2025-12-24 2-CHLORO-5-NITROBENZENESULFONIC ACID
96-73-1
 1KG 99.0% 1000KG Shaanxi Dideu Medichem Co. Ltd

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P-NITROCHLOROBENZENE-O-SULFONIC ACID 2-Chloro-5-nitrobenzenesulfonec acid 2-chloro-5-nitro-benzenesulfonicaci 2-CHLORO-5-NITROBENZENESULPHONIC ACID 2-CHLORO-5-NITROSULFOBENZENE 4-NITROCHLOROBENZENE-2-SULFONIC ACID Benzenesulfonic acid, 2-chloro-5-nitro- 2-chloro-5-nitrobenzene-1-sulfonic acid 1-Chloro-4-nitrobenzene-2-sulfonic Acid 3-Sulfo-4-chloronitrobenzene NSC 5375 p-Nitro chloro benzene-o-sulphonic Acid PARA NITRO CHLORO BENZENE-2-SULPHONIC ACID 2-Chloro-5-nitrobenzenesulfonic acid 96-73-1 Intermediates of Dyes and Pigments Aromatics Heterocycles