Orco Synthrowite C-52™ & C-52-T™
Orco Synthrowite C-52™ 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).
Orco Synthrowite C-52-T™ is a tinted version offering a blue-violet cast.
Physical Properties
Chemical Type | Stilbene |
Shade of C-52 | Neutral to slightly blue |
Shade of C-52-T | Blue/violet cast |
Appearance | Amber pourable fluid; C-52-T has violet cast |
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 C-52™
Continuous Pad
- 0.25 to 0.50% owb Orco Synthrowite C-52™
- 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.