| Characteristic |
| C. I. |
Fluorescent Brightener 264 |
| C. I. No. |
406235 |
| CAS No. |
68971-49-3 |
| Chemical Class |
Diaminostilbenedisulphonic acid derivate
|
| Properties
|
| Commercial form
| powder
|
| Solubility
| 100 g/l at 90°C
|
| Efficiency on various types of materials
|
| Textile industry
|
| Cotton
| suitable
|
| Flax
| suitable
|
| Viscose
| suitable
|
| Polyamide
| unsuitable
|
| Wool
| unsuitable
|
| Natural silk
| unsuitable
|
| Paper industry
|
| In mass
| usable
|
| In surface
| suitable
|
| In coating
| suitable
|
| Detergents industry
|
| Cellulosic fibres
|
|
| Polyamide
|
|
| Wool
|
|
| Natural silk
|
|
| Acetate
|
|
| Triacetate
|
|
| Basic application characteristic
|
| Shade of white
| bluish violet
|
| Ionogenity
| anionaktiv
|
| Afinity
| low
|
| Stability
|
| Hard water
| stable
|
| pH
| 2
|
| Oxidizing enviroment
| stable
|
| Reducing enviroment
| stable
|
| Sodium hypochlorite
| unstable
|
| Sodium chlorite
| unstable
|
| Fastness
| cotton
| polyamide
| wool
|
| standard depth
|
|
|
|
| Light Xenotest
| 3-4
| 5
| 4-5
|
| Washing 40°C
|
| 5
| 4
|
| Washing 60°C
|
| 5
|
| Application possibilities
|
Application in textile industry 1 
|
|
|
| Application in textile industry 2
|
|
|
| Application in paper industry
|
|
|
| Application in detergents
|
|
|
| Testing methods |
| Fastness standards
| | Light Xenotest
| ISO 105-B02-1994
| | Washing
| ISO 105-C01-1989
|
|
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