Sulfonazo III

双(苯磺酸偶氮)变色酸

Also known as: sulfonazo 3, 3,6-bis(o-sulfophenylazo)-4,5-dihydroxynaphthalene-2,7-disulfonic acid, 3,6-bis(o-sulphophenylazo)-4,5-dihydroxynaphthalene-2,7-disulphonic acid, 2,7-bis(o-sulfophenylazo)-chromotropic acid, 2,7-naphthalenedisulfonic acid, 4,5-dihydroxy-3,6-bis[(2-sulfophenyl)azo]-, 4,5-dihydroxy-3,6-bis[2-(2-sulfophenyl)diazen-1-yl]naphthalene-2,7-disulfonic acid, EINECS 217-089-9

Sulfonazo III (CAS 1738-02-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C22H16N4O14S4 and a molecular weight of 688.64100 g/mol. It is also known as sulfonazo 3, 3,6-bis(o-sulfophenylazo)-4,5-dihydroxynaphthalene-2,7-disulfonic acid and 3,6-bis(o-sulphophenylazo)-4,5-dihydroxynaphthalene-2,7-disulphonic acid. Key property: a melting point of 300ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

1738-02-9

Jingsj CID

J-1414032-5

Molecular Formula

C₂₂H₁₆N₄O₁₄S₄

Chinese Name

双(苯磺酸偶氮)变色酸

Molecular Weight

688.64100 g/mol

Category

Organic Acids

Last updated

8/21/2026