Chemical Product Library / Reference
Fluorescent brightener OB
Chemical identity, technical indicators, performance and application reference. Confirm specifications and regulatory suitability against supplier documentation.
Chemical identity
| English name | Fluorescent brightener OB |
|---|---|
| English synonyms | OB;Fluorescent brightener OB;2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene |
| Chinese name | 荧光增白剂OB |
| Chinese synonyms | 荧光增白剂OB;增白剂OB;2,5-双(5-叔丁基-2-苯并噁唑基)噻吩 |
| Chemical category | Optical Brighteners |
| CAS No. | 7128-64-5 |
| EINECS No. | 230-426-4 |
| Molecular formula | C26H26N2O2S |
| Molecular weight | 430.56 |
PubChem structure images are reference depictions, not proof of composition, purity, grade, or regulatory status. Mixtures and polymers may not have a single representative structure.
Technical indicators
Assay ≥98.0%; melting point ≥200°C; volatile matter ≤0.5%; color shade matches standard
Performance characteristics
Yellowish-green powder, high whitening effect, good heat resistance and light fastness
Application scenarios
Plastics whitening (PVC, PP, ABS, PS), synthetic fibers, coatings, inks