Disodium 4-hydroxynaphthalene-2,7-disulfonate

1-萘酚-3,6-二磺酸二钠

Also known as: 1-Naphthol-3,6-disulfonic acid disodium salt, 1-Hydroxynaphthalene-3,6-disulfonic acid disodium salt, 4-Hydroxy-2,7-naphthalenedisulfonic acid disodium salt, 1-Naphthol-3,6-disulfonic acid, disodium salt, Disodium 1-naphthol-3,6-disulfonate, Disodium 1-naphthol-3,6-disulfonate hydrate, Violet acid disodium salt hydrate, Rudolf Guercke acid disodium salt hydrate, Disodium 4-hydroxynaphthalene-2,7-disulphonate, 4-Hydroxynaphthalene-2,7-disulfonic acid disodium salt, 2,7-Naphthalenedisulfonic acid, 4-hydroxy-, disodium salt

Disodium 4-hydroxynaphthalene-2,7-disulfonate (CAS 20349-39-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H6Na2O7S2 and a molecular weight of 348.26000 g/mol. It is also known as 1-Naphthol-3,6-disulfonic acid disodium salt, 1-Hydroxynaphthalene-3,6-disulfonic acid disodium salt and 4-Hydroxy-2,7-naphthalenedisulfonic acid disodium salt. Key properties include a melting point of 44-47 °C, a boiling point of 214-215 °C (16 mmHg) and a flash point of 201-202°C/9mm. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

20349-39-7

Jingsj CID

J-8840-0

Molecular Formula

C₁₀H₆Na₂O₇S₂

Chinese Name

1-萘酚-3,6-二磺酸二钠

Molecular Weight

348.26000 g/mol

Category

Organic Acids

Last updated

8/21/2026