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6-hydroxy-5-(2-phenyldiazenyl)-2-naphthalenesulfonic acid

Also known as: Crocein Orange G, 1-Phenylazo-2-hydroxynaphthalene-6-sulfonic acid, 1-Phenylazo-2-naphthol-6-sulfonic acid, 6-Hydroxy-5-(phenylazo)-2-naphthalenesulfonic acid, 1-Phenylazo-2-hydroxy-6-sulfonaphthalene, NSC 75953

6-hydroxy-5-(2-phenyldiazenyl)-2-naphthalenesulfonic acid (CAS 23481-33-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C16H12N2O4S and a molecular weight of 328.34200 g/mol. Key property: a density of 1.43g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
23481-33-6
Jingsj CID
J-1514439-5
Molecular Formula
C16H12N2O4S
Molecular Weight
328.34200 g/mol
Category
Organic Acids
Last updated
8/21/2026
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Physicochemical Properties

Density1.43g/cm3
Exact Mass328.05200
PSA104.21000
LogP3.49920
Refractive Index1.676

Frequently Asked Questions

What is the CAS number of 6-hydroxy-5-(2-phenyldiazenyl)-2-naphthalenesulfonic acid?

The CAS number of 6-hydroxy-5-(2-phenyldiazenyl)-2-naphthalenesulfonic acid is 23481-33-6.

What are the molecular formula and molecular weight of 6-hydroxy-5-(2-phenyldiazenyl)-2-naphthalenesulfonic acid?

6-hydroxy-5-(2-phenyldiazenyl)-2-naphthalenesulfonic acid has molecular formula C16H12N2O4S and molecular weight 328.34200 g/mol.

What are the upstream and downstream products of 6-hydroxy-5-(2-phenyldiazenyl)-2-naphthalenesulfonic acid?

For 6-hydroxy-5-(2-phenyldiazenyl)-2-naphthalenesulfonic acid, Upstream Products: 6-Hydroxynaphthalene-2-sulfonic acid, Benzenediazonium chloride; Downstream Products: Oxalic acid, Maleic acid, Glyoxylic 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. "6-hydroxy-5-(2-phenyldiazenyl)-2-naphthalenesulfonic acid (CAS 23481-33-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1514439-5 (accessed 2026-11-09).

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