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4-Hydrazinobenzenesulfonic acid

Also known as: 4-Hydrazinobenzene-1-sulfonic acid, 4-Hydrazinobenzenesulfonic acid hydrate, 4-Hydrazinobenzolsulfonsure, 4-Sulphophenylhydrazine, 4-hydrazino-benzenesulfonic acid, 4-hydrazinobenzene sulphonic acid, 4-sulfophenylhydrazine, Ai3-09050, Benzenesulfonic acid, 4-hydrazino-, Benzenesulfonic acid, 4-hydrazinyl-, Phenylhydrazine-4-Sulfonic Acid, Phenylhydrazine-4-acid, Phenylhydrazine-p-sulfonic acid, p-Hydrazinophenylsulfonic acid, p-sulfophenylhydrazine, Hydrazinobenzenesulfonic Acid Hemihydrate, MFCD00025097

4-Hydrazinobenzenesulfonic acid (CAS 98-71-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H8N2O3S and a molecular weight of 188.204 g/mol. Key properties include a melting point of 285°C and a density of 1.6±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
98-71-5
Jingsj CID
J-17071-8
Molecular Formula
C6H8N2O3S
Molecular Weight
188.204 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point285°C
Density1.6±0.1 g/cm3
Exact Mass188.025558
PSA100.80000
LogP0.20
Refractive Index1.670

Customs & Trade Information

HS Code2928000090
Summary2928000090 other organic derivatives of hydrazine or of hydroxylamine VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 4-Hydrazinobenzenesulfonic acid?

The CAS number of 4-Hydrazinobenzenesulfonic acid is 98-71-5.

What are the molecular formula and molecular weight of 4-Hydrazinobenzenesulfonic acid?

4-Hydrazinobenzenesulfonic acid has molecular formula C6H8N2O3S and molecular weight 188.204 g/mol.

What are the upstream and downstream products of 4-Hydrazinobenzenesulfonic acid?

For 4-Hydrazinobenzenesulfonic acid, Upstream Products: Sulfanilic acid, Phenylhydrazine, p-Diazobenzenesulfonic acid; Downstream Products: Isopropylamine, Cyclohexylamine, 2-phenyl-1H-indole-5-sulfonic 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. "4-Hydrazinobenzenesulfonic acid (CAS 98-71-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-17071-8 (accessed 2026-11-09).

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