4,4''-(Diazoamino)dibenzenesulfonic acid disodium salt

4,4'-(重氮胺)二苯磺酸二钠盐

Also known as: 4,4'-(Diazoamino)dibenzenesulfonic acid disodium salt, 4,4'-(Triazene-1,3-diyl)bis(benzenesulfonic acid) sodium salt, sodium 4,4'-(triaz-1-ene-1,3-diyl)dibenzenesulfonate, Tartrazine Impurity 2, Sunset Yellow FCF Impurity 3, sodium (E)-4,4'-(triaz-1-ene-1,3-diyl)dibenzenesulfonate

4,4''-(Diazoamino)dibenzenesulfonic acid disodium salt (CAS 56120-28-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H9N3Na2O6S2 and a molecular weight of 401.32 g/mol. It is also known as 4,4'-(Diazoamino)dibenzenesulfonic acid disodium salt, 4,4'-(Triazene-1,3-diyl)bis(benzenesulfonic acid) sodium salt and sodium 4,4'-(triaz-1-ene-1,3-diyl)dibenzenesulfonate. Key property: a melting point of >241 °C (dec)°C (lit.). No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

56120-28-6

Jingsj CID

J-1459664-5

Molecular Formula

C₁₂H₉N₃Na₂O₆S₂

Chinese Name

4,4'-(重氮胺)二苯磺酸二钠盐

Molecular Weight

401.32 g/mol

Category

Organic Acids

Last updated

8/21/2026