| CAS Number :52232-33-4 | EC Number: |
| Molecular Formular:C26H26N2O2S | Molecular Weight:430.56 |
| English name: BBOT | C.I: 184 |
Specifications:
| Item | Indices |
| Appearance | light yellow or milk white powder |
| Purity | ≥ 99.8 % |
| Melting point | 201-202 |
| Ash | ≤ 0.1 |
| Volatile content | ≤ 0.4% |
Performance Features：
1.Pale green powder, tasteless, dissolvable in paraffin, fuorecent brightener OB spectrum can absorb the maximum wavelength of 375nm with the maximum transmitted length of 435nm (in ethanol).
2. Good brightening effects and weathering resistance requires a small quantity
Application：
optical brightener OB is widely used in the brightening of thermoplastics，Such as PVC, PE, PP, PS, ABS, PMMA, POM and thermosetting plastic, polyester fiber, paint, ink and coating.
Aplication Methods：
Polyvinyl chloride brightening: 0.01～0.05%
Increase radiance: 0.0001～0.001%
Polystyrene 0.0001～0.05%
ABS: 0.01～0.05%
Polyolefin colorless matrix: 0.0005～0.001%
White matrix: 0.005～0.05%
1. Optical brightener OB ,Also Fluorescent Brightener OB,fluorescent brightener,optical brighteners for plastics
2. Optical brightener OB mainly brighten or whitening PVC, PE, PP, PS, ABS, PMMA, POM
3. Optical brightenr OB is one important whitening agent in plastics