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.
Availability
Europe and United States: Provided Viobrite CBS is in stock in our local warehouses our lead time is about one week if delivered in 25 KG cartons.
We can also serve Canada, South America, South Africa, and other markets. Please contact our sales department for more details.
This substance (CAS: 248-421-0) has been registered (FULL SUBSTANCE) under REACH (EC) 1907/2006.
Product Identification
| CAS number | 27344-41-8 |
| EC number | 248-421-0 |
| HS code | 3204 20 00 |
| Sensitivity | Hygroscopic |
Specification
| Appearance | Yellowish free flowing fine granule |
| Active content | ≥95 % |
| 1% E-value | 1105 ~ 1181 |
| Extinction value | 0.829 – 0.885 |
| Heavy metal | Heavy metal |
| Ionic character | Ionic |
| Maxim absorption wave length | 348 ± nm |
| Moisture | ≤ 5.00 % |
Application
Viobrite CBS is being used in the production of detergents, paint and coatings.
Packaging
Available packaging: 25 KG cartons and 400 KG big bags.
Special packaging is available on request.
Storage
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.
MSDS
A Material Safety Data Sheet (MSDS) is available for Viobrite CBS and all other products supplied by Vesta Chemicals BV.
An MSDS outlines the hazards of a product and explains how to handle, use, and store the product safely. Besides it provides important regulatory and emergency response information for the purchased product.
Molecular and structural information
| Molecular formula | C28H20O6S6Na2 |
| Molecular weight | 562.56 g/mol |
| InChi key | PMPJQLCPEQFEJW-HPKCLRQXSA-L |
| Structural formula |  |
Physicochemical information
| Autoignition | 580 ºC |
| 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 |