Fluorescent Brightener 220
Synonyms
C.I. Fluorescent Brightener 220;
2,2'-Stilbenedisulfonic acid, 4,4'-bis((4-(bis(2-hydroxyethyl)amino)-6-(p-sulfoanilino)-s-triazin-2-yl)amino)-, tetrasodium salt;
Category
Zwitterionic Surfactant
> Sulfonate Type
>> Triazine Dye
Chemical Numbering System
CAS: 16470-24-9
EINECS: 240-521-2
Molecular Formula & Molecular Weight
Molecular Formula: C40H40N12Na4O16S4; C40H44N12O16S4.4Na
Molecular Weight: 1165.04
Structure
Properties
Appearance (1), solid.
Solubility soluble in water.
Stability stable.
Risk Solid form: irritation, irritation to skin, eye, respiratory system.
GHS label: 
Animal Toxicity
Table 1 Animal toxicity values
|
rat oral LD50 |
5300mg/kg[1] |
|
rat skin LD50 |
> 4mL/kg[1] |
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent masking, antistatic, UV absorbing abilities.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
95.0 |
Test Methods
(1), Actives
GB/T 13173 Surface active agents -- Detergents -- Testing methods
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, Product standards
(1), Chinese standards
(1a), HG/T 3727 Fluorescent whitening agent 220 (C.I. Fluorescent whitening agent 220)
4, 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.
Manufacturers
References
[1]: ChemIDplus. 16470-24-9, C.I. Fluorescent Brightener 220
Update: 20131024(1); 20190714(2);