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1-Amino-2-naphthol-4-sulfonic acid

Also known as: 4-Amino-3-hydroxy-1-naphthalenesulfonic acid, 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, 1-Amino-2-hydroxy-4-naphthalenesulfonic acid, 1-Amino-2-naphthol-4-sulphonic acid, 4-Amino-3-naphthol-1-sulfonic acid

1-Amino-2-naphthol-4-sulfonic acid (CAS 567-13-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H9NO4S and a molecular weight of 239.24800 g/mol. Key properties include a melting point of 290ºC (dec.)(lit.) and a density of 1.627 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
567-13-5
Jingsj CID
J-1492615-9
Molecular Formula
C10H9NO4S
Molecular Weight
239.24800 g/mol
Category
Organic Acids
Last updated
8/21/2026
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Physicochemical Properties

Melting Point290ºC (dec.)(lit.)
Density1.627 g/cm3
Exact Mass239.02500
PSA109.00000
LogP3.03630
Refractive Index1.748

Frequently Asked Questions

What is the CAS number of 1-Amino-2-naphthol-4-sulfonic acid?

The CAS number of 1-Amino-2-naphthol-4-sulfonic acid is 567-13-5.

What are the molecular formula and molecular weight of 1-Amino-2-naphthol-4-sulfonic acid?

1-Amino-2-naphthol-4-sulfonic acid has molecular formula C10H9NO4S and molecular weight 239.24800 g/mol.

What are the upstream and downstream products of 1-Amino-2-naphthol-4-sulfonic acid?

For 1-Amino-2-naphthol-4-sulfonic acid, Upstream Products: 1-naphthol-4-sulfonic acid sodium salt, Sodium 4-amino-1-naphthalenesulfonate; Downstream Products: 2-Diazo-1-naphthol-4-sulfonyl chloride, 2-Diazo-1-naphthol-4-sulfonic acid sodium salt.

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

Last updated:

How to cite: Jingsj. "1-Amino-2-naphthol-4-sulfonic acid (CAS 567-13-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1492615-9 (accessed 2026-11-09).

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