Disodium 4,4'-bis(2-sulfostyryl)biphenyl

4,4'-双(2-磺酸钠苯乙烯基)联苯

Also known as: Fluorescent Brightener 351, Fluorescent Brightener CBS-X, Optical Brightener CBS-X, CBS-X, Tinopal CBS-X, Tinopal CBX, Tinopal SK, Uvitex NFW, Stilbene 3, Stilbene 420, Brightener CBS-X, CF 351, FBA 351, Disodium 4,4'-bis(2-sulfonatostyryl)biphenyl, Disodium 2,2'-([1,1'-biphenyl]-4,4'-diyldi-2,1-ethenediyl)dibenzenesulfonate, Benzenesulfonic acid, 2,2'-([1,1'-biphenyl]-4,4'-diyldi-2,1-ethenediyl)bis-, disodium salt, 4,4'-Bis(2-sodiosulfostyryl)biphenyl, 4,4'-Bis(o-sulfostyryl)biphenyl disodium salt, Calcofluor CG, Disodium 4',4''-bi[stilbene-2,2'''-disulfonate]

Disodium 4,4'-bis(2-sulfostyryl)biphenyl (CAS 27344-41-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C28H20Na2O6S2 and a molecular weight of 562.564 g/mol. It is also known as Fluorescent Brightener 351, Fluorescent Brightener CBS-X and Optical Brightener CBS-X. Key properties include a melting point of >300°C (dec.) and a density of 1.414. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

27344-41-8

Jingsj CID

J-38035-9

Molecular Formula

C₂₈H₂₀Na₂O₆S₂

Chinese Name

4,4'-双(2-磺酸钠苯乙烯基)联苯

Molecular Weight

562.564 g/mol

Category

Organic Acids

Last updated

8/21/2026