Chemical Name: Fluorescent Brightener 135
Synonyms: 2,2′-(1,2-Ethenediyl)bis[5-methylbenzoxazole]; 1,2-Bis(5-methyl-2-benzoxazole)ethylene
CAS No.: 12224-12-3/1041-00-5
Molecular Fomula: C18H14N2O2
Molecular weight: 290.31596
Appearance: yellow powder
Assay: ≥99.0%
| Parameter | Specification |
|---|---|
| CAS Number | 12224-12-3 / 1041-00-5 |
| Chemical Name | 2,2'-(2,5-Thiophenediyl)bis(5-tert-butylbenzoxazole) |
| Molecular Formula | C₂₆H₂₆N₂O₂S |
| Appearance | Yellow-green crystalline powder |
| Melting Point | 218-223°C |
| Molecular Weight | 430.57 g/mol |
| Brand | Purity | Primary Applications | Solubility | Thermal Stability |
|---|---|---|---|---|
| Vivalr OB-1 | ≥99.5% | Engineering Plastics, Automotive Coatings | 0.12g/100ml (DMSO) | Stable ≤300°C |
| Competitor A | 98.0-99.0% | General Plastics | 0.08g/100ml | Stable ≤250°C |
| Competitor B | 97.5-98.5% | Textile Auxiliaries | 0.05g/100ml | Stable ≤220°C |
Enhances whiteness perception in synthetic fibers by 30-40% under UV light exposure. Compatible with PET, nylon, and polyacrylic fibers.
0.01-0.05% additive dosage improves initial whiteness by 15-20 points in PVC, polyolefins, and engineering plastics.
Reduces optical brightener consumption by 12-18% in wood-containing paper grades while maintaining ISO brightness ≥92%.
Dosage: 0.08% by weight
Result: Increased CIELAB whiteness index from 128 to 152 under D65 illumination.
Dosage: 350ppm
Outcome: Achieved ΔE <1.5 after 2000hr QUV testing, meeting EN 12608 standards.
Challenge: Yellowing in recycled PET fibers
Solution: 0.05% Fluorescent Brightener 135 masterbatch
Result: 28% reduction in customer returns, achieved AATCC 110 whiteness standard
Challenge: UV-induced discoloration in PP components
Solution: 0.03% additive in color concentrate
Result: Passed SAE J2412 testing protocol, 18-month warranty achieved
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