Optical Brightener Eastobrite OB-1
Chemical Name:
2,2′-(vinylenedi-p-phenylene)bisbenzoxazole
| Formula | C28H18N2O2 |  |
| MW | 414 | |
| CAS# | 1533-45-5 |
Synonym name:
Fluorescent Brightener 393 (FB 393 ) , C.I.393, Fluorescent Brightener OB-1, Eastobrite OB-1
Specification:
| Appearance | yellowish or greenish powder |
| Melting point | 357-359℃ |
| Solubility | (g/100 g solution) at 20° C: |
| Acetone | ＜0.1 |
| Chloroform | ＜0.1 |
| Hexane | ＜0.1 |
| Methanol | ＜0.1 |
| Water | ＜0.1 |
Application:
>Features: Brilliant, neutral white cast that compensates for yellowing; Low volatility and excellent heat resistant make the product ideal for use in fibers and in engineering plastics processed at high temperatures; Good light fastness;
>OB-1 is excellent oxazole type brightener, Mainly used in whitening of polyester and ABS, PS, HIPS, PA, PC, PP, EVA, rigid PVC etc., also used as nylon fluorescent brightener.
>Recommended concentrations：0.005-0.2% depend on the application and degree of desired whiteness.
Handing and Safety:
>FDA cleared for use in all polymers
>For additional handing and toxicological information, please consult us for Maternal Safety Date Sheet.
Package:
25kg per fiber drum with PE liner, 6*2 layer 12 drum per pallet, 5 CBM per ton,or according to customers’ requirements.