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5-Chlorosulfonyl-2-hydroxybenzoic acid

Also known as: 5-(Chlorosulfonyl)salicylic acid, 5-(Chlorosulphonyl)salicylic acid, 2-Hydroxy-5-(chlorosulfonyl)benzoic acid, Benzoic acid, 5-(chlorosulfonyl)-2-hydroxy-, 5-Chlorosulfonyl-2-hydroxybenzoic acid, 5-Chlorosulphonyl-2-hydroxybenzoic acid, AURORA 23307, BUTTPARK 49\07-51, OTAVA-BB BB7110952608, TIMTEC-BB SBB010137

5-Chlorosulfonyl-2-hydroxybenzoic acid (CAS 17243-13-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H5ClO5S and a molecular weight of 236.630 g/mol. Key properties include a melting point of 171-174°C, a boiling point of 434.6±40.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 216.6±27.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
17243-13-9
Jingsj CID
J-12324-0
Molecular Formula
C7H5ClO5S
Molecular Weight
236.630 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point171-174°C
Boiling Point434.6±40.0 °C at 760 mmHg
Density1.7±0.1 g/cm3
Flash Point216.6±27.3 °C
Exact Mass235.954620
PSA100.05000
LogP2.70
Vapor Pressure0.0±1.1 mmHg at 25°C
Refractive Index1.621

Customs & Trade Information

HS Code2918290000
SummaryHS: 2918290000 other carboxylic acids with phenol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) VAT:17.0% MFN tariff:6.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 5-Chlorosulfonyl-2-hydroxybenzoic acid?

The CAS number of 5-Chlorosulfonyl-2-hydroxybenzoic acid is 17243-13-9.

What are the molecular formula and molecular weight of 5-Chlorosulfonyl-2-hydroxybenzoic acid?

5-Chlorosulfonyl-2-hydroxybenzoic acid has molecular formula C7H5ClO5S and molecular weight 236.630 g/mol.

What are the upstream and downstream products of 5-Chlorosulfonyl-2-hydroxybenzoic acid?

For 5-Chlorosulfonyl-2-hydroxybenzoic acid, Upstream Products: Salicylic acid, 5-Sulfosalicylic acid, Acetylsalicylic acid; Downstream Products: 4-[[2-Ethoxy-5-[(4-methyl-1-piperazinyl)sulfonyl]benzoyl]amino]-1-methyl-3-propyl-1H-pyrazole-5-carboxamide, 2-HYDROXY-5-(MORPHOLINE-4-SULFONYL)-BENZOIC ACID, 2-Hydroxy-5-[(4-methoxyphenyl)sulfamoyl]benzoic acid.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "5-Chlorosulfonyl-2-hydroxybenzoic acid (CAS 17243-13-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-12324-0 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.