Optical Brightener OB-1 for PVC
| Chemical name | 2,2′-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole |
| Molecular formula | C28H18N2O2 |
| Molecular weight | 414.4 |
| CAS NO. | 1533-45-5 |
Chemical structure
Specification
| Appearance | Yellowish green powder |
| Assay | 98% min |
| Melting Point | 357~361°C |
| Volatiles Content | 0.5% max |
| Ash content | 0.5%max |
Recommended dosage
Every 1000Kg polymer added amount of Optical brightener OB-1:
1. Polyester fiber 75-300g. (75—300ppm).
2. Rigid PVC, PP, ABS, Nylon, PC 20-50g. (20—50ppm).
3. Whitening concentrated masterbatch 5-7kg. (0.5—0.7%).
Package and Storage
Net 25kg/full-paper drum
Store the product in a cool, dry, well-ventilated area away from incompatible materials.
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