Orco Synthrowite NL™
Orco Synthrowite NL™ is a high-substantivity optical brightener for cotton for use in continuous-pad, pad-bleach and hydrogen peroxide bleaching baths at high temperatures of 200 – 212°F(93-100°C).
Physical Properties
Chemical Type | Stilbene |
Shade of NL | Neutral to slightly blue cast |
Appearance | Amber pourable fluid |
Ionic Charge | Anionic |
Stability | Stable to strong alkali and hydrogen peroxide; unstable to acids |
pH | 8.5 – 9.0 |
Lightfastness | Good |
Washfastness | Very good |
Procedures
Exhaust
- 0.25 to 0.5% owg Orco Synthrowite NL™
Continuous Pad
- 0.25 to 0.50% owb Orco Synthrowite NL™
- 0.10 to 0.25% owb Orconol CHSA Conc™
Pad at 100-120°F(38-49°C).
Dry and develop at 300-325° F(150-162°C) for 90 seconds.