trisodium 3-hydroxy-4-[(4-sulphonatophenyl)azo]naphthalene-2,7-disulphonate

3-羟基-4-[(4-磺苯基)偶氮]-2,7-萘磺酸三钠

Also known as: trisodium 3-hydroxy-4-[(4-sulfonatophenyl)azo]naphthalene-2,7-disulfonate, 3-hydroxy-4-[(4-sulfophenyl)azo]-2,7-naphthalenedisulfonic acid trisodium salt, sulfanilic acid azo r salt color standard, (4Z)-3-oxo-4-[(4-sulfonatophenyl)hydrazinylidene]naphthalene-2,7-disulfonate, 2,7-naphthalenedisulfonic acid, 3-hydroxy-4-[2-(4-sulfophenyl)diazenyl]-, sodium salt (1:3), 3-hydroxy-4-(p-sodiooxysulfonylphenylazo)-2,7-naphthalenedisulfonic acid disodium salt, EINECS 256-824-8

trisodium 3-hydroxy-4-[(4-sulphonatophenyl)azo]naphthalene-2,7-disulphonate (CAS 50880-65-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C16H9N2Na3O10S3 and a molecular weight of 554.41400 g/mol. It is also known as trisodium 3-hydroxy-4-[(4-sulfonatophenyl)azo]naphthalene-2,7-disulfonate, 3-hydroxy-4-[(4-sulfophenyl)azo]-2,7-naphthalenedisulfonic acid trisodium salt and sulfanilic acid azo r salt color standard. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

50880-65-4

Jingsj CID

J-32420-1

Molecular Formula

C₁₆H₉N₂Na₃O₁₀S₃

Chinese Name

3-羟基-4-[(4-磺苯基)偶氮]-2,7-萘磺酸三钠

Molecular Weight

554.41400 g/mol

Category

Organic Acids

Last updated

8/21/2026