Optical Brightener OB
Optical Brightener OB
Whitening Agent| OB
Basic Specifications
| Product Name | Optical Brightener OB |
| English Name | Optical Brightener OB |
| CAS Registry Number | 7128-64-5 |
| C.I. Number | Fluorescent Brightener 184 / C.I. 184 |
| Molecular formula | C₂₆H₂₆N₂O₂S |
| Molecular Weight | 430.56 |
| Product Categories | Whitening Agent |
| Product Line | OB |
| Hue | Blu-ray |
| Appearance | pale yellow powder |
| Density | Approx. 1.2 g/cm³ |
Product Features
- Significant Whitening and Brightening — Blue Fluorescence Imparts a Bright, Blue-White Luster to Products
- Low usage — only 0.0001-0.001% transparent PVC needed
- Heat resistance passed — decomposition temperature exceeds 220°C, suitable for standard plastic processing
- Light- and chlorine-resistant — resists degradation from sunlight and chlorine bleach
- Good compatibility — Compatible with most polymers; wide range of applications
- Cost-effective — Universal whitener, affordable
Application Areas
Plastic Whitening — PVC, PS, PE, PP, ABS, and morePaint & Coatings — Oil-based Paints, Whitening AgentsPrinting Ink — Printing Ink BrightenerSynthetic Fibers — Optical Brighteners for Acetate FibersFilm Injection Molding — Whitening Agents for Films, Injection Molding, and Extrusion Compounds
App Data
| Applicable Systems | Recommendation | Behavior Description |
|---|---|---|
| PVC | ✅ Recommended | White 0.01-0.05%, Transparent 0.0001-0.001%: Brightening & Whitening |
| PS | ✅ Recommended | White 0.01-0.05%, Transparent 0.0001-0.001%: Brightens products |
| PE | ✅ Recommended | White 0.005-0.05%, Transparent 0.0005-0.005%; Film Whitening |
| PP | ✅ Recommended | White 0.005-0.05%, Transparent 0.0005-0.005%: Brightens products |
| ABS | ✅ Recommended | White 0.01-0.05%, Transparent 0.0001-0.001%: Brightens products |
| Acetate | ✅ Recommended | Use 0.01-0.05% fiber whitening |
| Paint and Coatings | ✅ Recommended | Usage: 0.01-0.02%; Whitening and brightening |
| Printing Ink | ✅ Recommended | Dosage: 0.01-0.02%; Brightens and enhances color. |
Notes
- Please test with a sample first to confirm the optimal dosage and heat resistance conditions.
- The powder color chart may differ from the final product color. Please refer to the actual colored result.
- Evaluate weather resistance for long-term outdoor exposure.
- Use in very small amounts; ensure thorough mixing. Adjust dosage when used with UV absorbers.
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