4-4'-Bis(2-sulfostyryl)biphenyl
Synonyms
Benzenesulfonic acid, 2,2'-((1,1'-biphenyl)-4,4'-diyldi-2,1-ethenediyl)bis-;
2,2'-((1,1'-Biphenyl)-4,4'-diyldivinylene)bis(benzenesulphonic) acid;
Tinopal CBS;
Tinopal CBS-X;
Category
Anionic Surfactant
> Sulfonate
>> Aryl Sulfonate
>>> Distyrylbiphenyl Group Sulfonate
>>>> Distyrylbiphenyl Sulfonate
Chemical Numbering System
CASRN：38775-22-3
EINECS：254-121-0
Molecular Formula & Molecular Weight
Molecular Formula: C28H22O6S2
Molecular Weight: 518.60
Structure
Properties
Appearance (1), solid.
Solubility insoluble in water.
Stability stable.
Risk Solid form: flammable material; irritation, irritation to skin, eye, respiratory. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.
GHS (Rev.10) label: 
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent UV absorbing, dispersing, emulsifying abilities. Blue shade. Resistant to chlorine bleach, oxygen bleach. Resistant to acid, alkali.
Synthesis
Refer to:
NIU Yu-lan, XUE Xiao-li, CHEN Zhi-min. Improvement of synthesis of fluorescent whitening agent CBS. China Surfactant Detergent & Cosmetics, 2003, 33(3): 197-199, etc.
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
95.0 |
Test Methods
(1), Actives
2, Hazardous substances indexes
|
Item |
Hazardous substances indexes |
|
Solid |
|
|
Heavy metals (as Pb), mg/Kg, ≤ |
20 |
|
As, mg/Kg, ≤ |
3 |
Test Methods
(1), Heavy metals (as Pb)
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30799 The test method of food detergents - Determination of heavy metals
(2), As
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30797 The test method of food detergents - Determination of total arsenic
3, Further explanation
(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.
Major Uses
1, Typical applications
Use as fluorescent brightener.
Use as UV absorbing agent.
2, Household cleaning products
Use as fluorescent brightener widely. For example: washing powder.
Manufacturers