Chemical name: Disodium 4,4'-bis(2-sulfostyryl)biphenyl
CAS number: 27344-41-8
Description and features
Disodium-4-4-bis-2-sulfostyryl-biphenyl (Viobrite CBS) is a yellow free flowing fine granule which has the chemical formula C28H20O6S6Na2.
Viobrite CBS has a higher yield of whiteness than the classical stilbene type brighteners. It finds its application in houselhold detergents. Besides it is being used in coatings and textiles.
This substance is also known as Fluorescent Brightener FWA-5, Distyrylbiphenylsulfonate, Fluorescent Whitener CBS and FBA 351.
|HS code||3204 20 00|
Molecular and structural information
|Molecular weight||562.56 g/mol|
|Smiles notation||C1=CC=C(C(=C1)/C=C/C2=CC=C(C=C2)C3=CC=C(C=C3)/C=C/C4=CC=CC=C4S(=O)(=O)[O-])S (=O)(=O)[O-].[Na+].[Na+]|
|Appearance||Yellowish free flowing fine granule|
|1% E-value||1105 ~ 1181|
|Maxim absorption wave length||348 ± nm|
|Extinction value||0.829 - 0.885|
|Moisture content||≤ 5.00 %|
|Active content:||≥95 %|
|Heavy metal content||≤ 30 ppm|
|Bulk density||550 - 670 g/l|
|Density||1.49 g/cm3 (22 ºC)|
|Melting point||>300 ºC|
|Partition coefficient (log Pow)||-2.32 @ 25 ºC / pH 6.8|
|pH value||7 - 8.5|
|Solubility in water||17.6 g/l @ 20 ºC / pH 6.7|
Viobrite CBS-X is being used in the production of detergents, paint and coatings.
Available packaging: 25 KG cartons and 400 KG big bags.
Special packaging is available on request.
Europe and United States: Provided Viobrite CBS is on stock in our local warehouses our lead time is about one week if delivered in 25 KG cartons.
Canada, South America, South Africa and other markets can also be served, please contact our sales department for more details.
Store disodium-4-4-bis-2-sulfostyryl-biphenyl in a cool, dry and well-ventilated area and in line with legal requirements.
Keep CBS away from heat sources and oxidizing agents.
This substance (CAS: 27344-41-8) has been pre-registered under REACH (EC) 1907/2006.
A Material Safety Data Sheets (MSDS) is available for Viobrite CBS and all other products supplied by Vesta Intracon BV. An MSDS describes the hazards of a product and explains how a product can be safely handled, used and stored. Besides it provides important regulatory and emergency response information for the purchased product.