4-[(2,4-Dihydroxyphenyl)azo]-5-hydroxynaphthalene-2,7-disulfonic acid

4-[(2,4-二羟基苯基)偶氮]-5-羟基萘-2,7-二磺酸

Also known as: H-Resorcinol, H-Resorcinol [Spectrophotometric reagent for the determination of B by FIA], 4-(2,4-Dihydroxyphenylazo)-5-hydroxynaphthalene-2,7-disulfonic acid, Einecs 222-843-5, spectrophotometric reagent for the determination of B by FIA

4-[(2,4-Dihydroxyphenyl)azo]-5-hydroxynaphthalene-2,7-disulfonic acid (CAS 3627-01-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C16H12N2O9S2 and a molecular weight of 440.40400 g/mol. It is also known as H-Resorcinol, H-Resorcinol [Spectrophotometric reagent for the determination of B by FIA] and 4-(2,4-Dihydroxyphenylazo)-5-hydroxynaphthalene-2,7-disulfonic acid. Key property: a density of 1.828g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

3627-01-8

Jingsj CID

J-1352599-4

Molecular Formula

C₁₆H₁₂N₂O₉S₂

Chinese Name

4-[(2,4-二羟基苯基)偶氮]-5-羟基萘-2,7-二磺酸

Molecular Weight

440.40400 g/mol

Category

Organic Acids

Last updated

8/21/2026