Structure4,4'-Bis-(2-sulfostyryl)-biphenyl disodium salt (BSBDS)
CAS No. 27344-41-8
EC No. 248-421-0
Synonyms Disodium 2,2'-[biphenyl-4,4'-diyldiethene-2,1-diyl]dibenzenesulfonate

4,4'-Bis-(2-sulfostyryl)-biphenyl disodium salt (BSBDS)

​4,4'-Bis-(2-sulfostyryl)-biphenyl disodium salt (BSBDS) is an optical brightener (fluorescent whitening agent which absorbs UV radiation and re-emits visible blue light) which gives a bright neutral white shade to cellulosic and synthetic fabrics. It is lightfast, chlorine stable, highly soluble and achieves high level of whiteness and brightness from cold to medium washing temperature, even by short washing time.


  • Formulation Technologies - Textile Auxiliaries
  • Home Care - Laundry
  • Industrial and Institutional Cleaning - Commercial Laundry
  • Paper and Printing - Paper making, Coloration (paper)
  • Textiles and Leather - Drapery, fabric, textiles, fibres, Industrial Non-Wovens

Shelf Life

Under proper torage conditions, the shelf life is 1 year.

Health and Safety

Detailed information on the product described can be found in our relevant Health and Safety Information (Material Safety Data Sheet).