1-Amino-2-naphthol-6-sulfonic acid

1-氨基-2-萘酚-6-磺酸

Also known as: 5-Amino-6-hydroxy-2-naphthalenesulfonic acid, 5-amino-6-hydroxynaphthalene-2-sulfonic acid, 2-Naphthalenesulfonic acid, 5-amino-6-hydroxy-, 1-Amino-2-hydroxynaphthalene-6-sulfonic acid, 1-amino-2-hydroxy-naphthalene-6-sulphonic acid, 5-Amino-6-hydroxy-naphthalene-2-sulfonic acid, 5-amino-6-hydroxy-naphthalin-2-sulfonsaeure, 1-amino-2-hydroxy-naphthalinsulfonsaeure

1-Amino-2-naphthol-6-sulfonic acid (CAS 5639-34-9) 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. It is also known as 5-Amino-6-hydroxy-2-naphthalenesulfonic acid, 5-amino-6-hydroxynaphthalene-2-sulfonic acid and 2-Naphthalenesulfonic acid, 5-amino-6-hydroxy-. Key property: a density of 1.627g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
5639-34-9
Jingsj CID
J-1122620-4
Molecular Formula
C10H9NO4S
Chinese Name
1-氨基-2-萘酚-6-磺酸
Molecular Weight
239.24800 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Density1.627g/cm3

Frequently Asked Questions

What is the CAS number of 1-Amino-2-naphthol-6-sulfonic acid?

The CAS number of 1-Amino-2-naphthol-6-sulfonic acid is 5639-34-9.

What are the molecular formula and molecular weight of 1-Amino-2-naphthol-6-sulfonic acid?

1-Amino-2-naphthol-6-sulfonic acid has molecular formula C10H9NO4S and molecular weight 239.24800 g/mol.

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

Last updated:

How to cite: Jingsj. "1-Amino-2-naphthol-6-sulfonic acid (CAS 5639-34-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1122620-4 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.