CAS NO: 1533-45-5
Specification: 98.5%Min
| Product Name | Optical brightener OB-1 |
| Quality Standard | 98%Min |
| Synonyms | Fluorescence Brightener OB-1, 2.2'-(4.4'-diphenol vinyl) dibenzoxazol |
| Testing Items | Critrion |
| Appearance | Green powder (not yellow) |
| Volatile | 0.5%Max |
| Melting Point | 359℃-363℃ |
| Purity HPLC | 98.5%Min |
| Ash content | 0.3%Max |
| Particle size | 100mesh 100% Pass |