Table of Contents
Fluorescent Brightener 28 (CAS 4404-43-7) Technical Specifications
Core Parameters
| Parameter | FB 28 | Conventional Brighteners |
|---|---|---|
| Molecular Formula | C₃₆H₃₄N₁₂Na₂O₈S₂ | Varies by type |
| Appearance | Yellow-green crystalline powder | White/off-white powder |
| Excitation Wavelength | 365-380 nm | 340-360 nm |
Industrial Applications Breakdown
Primary Use Cases
- Plastics Manufacturing: 0.01-0.05% additive ratio for PVC/PP enhancement
- Textile Processing: 0.1-0.3% owf in synthetic fiber treatment
- Paper Whitening: 0.05-0.15% solution for premium grade papers
Implementation Scenarios
Case 1: PVC Profile Enhancement
Manufacturer achieved 15% whiteness improvement with 0.03% FB 28 loading…
Case 2: Automotive Textiles
UV resistance increased by 40% in polyester seat fabrics…
Verified Client Implementations
Client A: European Polymer Producer
Challenge: Yellowness in recycled HDPE compounds
Solution: 0.04% FB 28 masterbatch integration
Result: ΔE reduction from 8.2 to 1.3
Client B: Asian Paper Mill
Challenge: ISO brightness plateau at 92%
Solution: FB 28 coating additive at 0.12%
Result: Achieved 95.4% brightness with 18% cost savings
Request Technical Consultation
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Tel: (86) 15866781826
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