| Characteristic |
| C. I. |
Fluorescent Brightener 351 |
| C. I. No. |
482200 |
| CAS No. |
27344-41-8 |
| Chemical Class |
Distyrylbiphenyl
|
| Properties
|
| Commercial form
| powder
|
| Solubility
| 25 g/l at 25°C
|
| Efficiency on various types of materials
|
| Detergents industry
|
| Cellulosic fibres
| suitable
|
| Polyamide
| usable
|
| Wool
| usable
|
| Natural silk
| usable
|
| Acetate
| unsuitable
|
| Triacetate
| unsuitable
|
| Basic application characteristic
|
| Shade of white
| neutral
|
| Ionogenity
| anionaktiv
|
| Afinity
| high
|
| Stability
|
| Hard water
| stable
|
| pH
| 5-12
|
| Oxidizing enviroment
| stable
|
| Reducing enviroment
| stable
|
| Sodium hypochlorite
| stable
|
| Sodium chlorite
| unstable
|
| Fastness
| cotton
| wool
|
| standard depth
|
|
|
| Light Xenotest
| 4
|
|
| Washing 40°C
| 5
|
|
| Washing 60°C
| 5
|
| Application possibilities
|
Application in detergents 
|
|
|
|
|
|
| Dosing in the detergents
|
| Powders
| 0,05-0,25 %
|
| Liquid detergents
| 0,05-0,40 %
|
| The % are related to the detergent mass
|
| Testing methods |
| Fastness standards
| | Light Xenotest
| ISO 105-B02-1994
| | Washing
| ISO 105-C01-1989
|
|
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