dyes.synthesia.eu / Organic dyes / Optical brightening agents / RYLUX VPA-T
RYLUX VPA-T
| Characteristic | |
| C. I. | Fluorescent Brightener 140 |
| C. I. No. | 551100 |
| CAS No. | 91-44-1 |
| Chemical Class |
Coumarine derivate |
| Properties | |
| Commercial form | powder |
| Solubility | very low in water/very good in ethanol |
| Efficiency on various types of materials | |
| Textile industry | |
| Cotton | |
| Flax | |
| Viscose | |
| Polyamide | |
| Wool | |
| Natural silk | |
| Paper industry | |
| In mass | |
| In surface | |
| In coating | |
| Detergents industry | |
| Cellulosic fibres | unsuitable |
| Polyamide | suitable |
| Wool | suitable |
| Natural silk | suitable |
| Acetate | suitable |
| Triacetate | suitable |
| Basic application characteristic | |
| Shade of white | red |
| Ionogenity | non-ionic |
| Afinity | high |
| Stability | |
| Hard water | stable |
| pH | 6 |
| Oxidizing enviroment | stable |
| Reducing enviroment | stable |
| Sodium hypochlorite | unstable |
| Sodium chlorite | unstable |
| Fastness | cotton | polyamide | wool |
| standard depth | |||
| Light Xenotest | |||
| Washing 40°C | 3 | 5 | 4 |
| Washing 60°C | 2 | 5 |
| Application possibilities |
Application in textile industry 1 
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| Application in textile industry 2
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| Application in paper industry
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| Application in detergents
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| Testing methods | ||||||
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