2-Diazo-1-naphthol-5-sulfonic acid sodium salt monohydrate

2-重氮-1-萘酚-5-磺酸钠一水

Also known as: 2-Diazo-1-naphthol-5-sulfonic acid monohydrate sodium salt, sodium 6-diazenyl-5-hydroxy-1-naphthalenesulfonate monohydrate, 1-Naphthalenesulfonic acid, 6-diazenyl-5-hydroxy-, sodium salt, hydrate (1:1:1)

2-Diazo-1-naphthol-5-sulfonic acid sodium salt monohydrate (CAS 312619-43-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H9N2NaO5S and a molecular weight of 292.24400 g/mol. It is also known as 2-Diazo-1-naphthol-5-sulfonic acid monohydrate sodium salt, sodium 6-diazenyl-5-hydroxy-1-naphthalenesulfonate monohydrate and 1-Naphthalenesulfonic acid, 6-diazenyl-5-hydroxy-, sodium salt, hydrate (1:1:1). Key property: a melting point of 143ºC (dec.)(lit.). No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
312619-43-5
Jingsj CID
J-44241-5
Molecular Formula
C10H9N2NaO5S
Chinese Name
2-重氮-1-萘酚-5-磺酸钠一水
Molecular Weight
292.24400 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point143ºC (dec.)(lit.)

Frequently Asked Questions

What is the CAS number of 2-Diazo-1-naphthol-5-sulfonic acid sodium salt monohydrate?

The CAS number of 2-Diazo-1-naphthol-5-sulfonic acid sodium salt monohydrate is 312619-43-5.

What are the molecular formula and molecular weight of 2-Diazo-1-naphthol-5-sulfonic acid sodium salt monohydrate?

2-Diazo-1-naphthol-5-sulfonic acid sodium salt monohydrate has molecular formula C10H9N2NaO5S and molecular weight 292.24400 g/mol.

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

Last updated:

How to cite: Jingsj. "2-Diazo-1-naphthol-5-sulfonic acid sodium salt monohydrate (CAS 312619-43-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44241-5 (accessed 2026-10-25).

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