Fluorescent Brightener OB-2 CAS 2397-00-4
Chemical Name: Fluorescent Brightener OB-2
Synonyms: 4,4′-Bis(5-methyl-2-benzoxazolyl)stilbene; 2,2′-(Vinylenedi-p-phenylene)bis[5-methylbenzoxazole]
CAS No.: 2397-00-4
Molecular Fomula: C30H22N2O2
Molecular weight: 442.51
Appearance: Yellow green powder
Assay: ≥98.0%
Fluorescent Brightener OB-2 (CAS 2397-00-4) Ultimate User Guide
Table of Contents
- 1. Product Overview & Technical Specifications
- 2. Key Applications & Industry Uses
- 3. Performance Comparison Matrix
- 4. Implementation Case Studies
- 5. Verified Customer Success Stories
- 6. Technical Consultation & Quotation
1. Product Overview & Technical Specifications
| Parameter | Fluorescent Brightener OB-2 | CAS 2397-00-4 |
|---|---|---|
| Chemical Name | 2,2′-(2,5-Thiophenediyl)bis(5-tert-butylbenzoxazole) | 2397-00-4 |
| Molecular Formula | C₂₆H₂₆N₂O₂S | |
| Appearance | Yellow-green crystalline powder | |
| Melting Point | 196-202°C | |
| Solubility | 0.1g/L in water (20°C), soluble in organic solvents | |
2. Key Applications & Industry Uses
Core Functional Benefits:
- Plastics Industry: Enhances whiteness in PVC, PO, and PS substrates
- Textile Processing: Superior UV resistance for synthetic fibers
- Paper Manufacturing: Optical brightening agent for premium grades
- Detergent Formulations: Color correction in laundry applications
- Coatings: Prevents yellowing in polymer coatings
3. Performance Comparison Matrix
| Feature | OB-2 | OB-1 | Competitor X |
|---|---|---|---|
| Thermal Stability | 300°C | 280°C | 260°C |
| Solubility in DOP | 0.25% | 0.18% | 0.12% |
| Light Fastness | Grade 7-8 | Grade 6-7 | Grade 5-6 |
4. Implementation Case Studies
Case 1: PVC Profile Manufacturing
Application: 0.02-0.05% addition in rigid PVC formulations
Result: 15% improvement in initial whiteness, 30% reduction in thermal yellowing
Case 2: Polyester Fiber Production
Implementation: 0.3-0.8g/kg fiber masterbatch
Outcome: Maintained whiteness index >160 after 500hrs UV exposure
5. Verified Customer Success Stories
Customer A: European Polymer Solutions Co.
Challenge: Yellowing in automotive PVC components
Solution: 0.03% OB-2 in extrusion process
Result: Achieved ΔE <1.5 after 3000hrs Xenon testing
Customer B: Asia Textile Group
Requirement: UV-stable brightening for outdoor fabrics
Formula: 0.5% OB-2 in PET spin finish
Performance: 85% whiteness retention after 1-year outdoor exposure
6. Technical Consultation & Quotation
Contact our chemical engineering specialists:
Email: info@vivalr.com
Tel: (86) 15866781826
Why Choose Our OB-2:
- Batch-to-batch consistency (purity >99.5%)
- Custom particle size distributions available
- REACH compliant documentation
- Technical support for formulation optimization
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