Optical Brightening Agent OB-1 | CAS 1533-45-5
- CAS No.: 1533-45-5
- EINECS No.: 216-245-3
- Molecular Formula: C28H18N2O2
Product Information of optical brightening agent OB-1
- Product Name: Optical Brightening Agent OB-1
- Molecular Mass: 414.46
- Synonyms: 2,2′-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole; 2,2′-(Vinylenedi-p-phenylene)bisbenzoxazole; 4,4′-BIS(2-BENZOXAZOLYL)STILBENE; optical whitening agent OB-1; Fluorescent brightener 393; Optical brightener OB-1
Specifications of optical brightening agent OB-1
| Items | Specifications |
|---|---|
| Appearance | Bright yellow crystalline powder |
| Purity | ≥ 99% |
| Melting point | 357-359 °C |
| Volatile content | ≤ 0.50% |
| Ash content | ≤ 0.10% |
Properties of optical brightening agent OB-1
Optical brightening agent OB-1 is yellow crystal powder. It is insoluble in water, soluble in high boiling point organic solvents such as phenyl-chloride. Optical brightening agent OB-1 (Fluorescent brightener OB-1) is an excellent oxazole brightener with stable performance, which has good heat resistance, sunlight resistance, chlorine bleaching resistance and migration resistance.
Applications of optical brightening agent OB-1
Optical brightening agent OB-1 is suitable for shaping various kinds of plastics and their products under high temperature. It has an extra ideal whitening effect on polyester-cotton blend fabric. It can be used for whitening polyester melt.
