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CAS No.1533-45-5 Fluorescent Brightener OB-1 Yellow Powder Purity 99%
Product Details
Mat no.10010002 Fluorescent Brightener OB-1 4,4'-BIS(2-BENZOXAZOLYL)STILBENE Yellow Powder Purity≥99%
| English synonyms | 4,4'-BIS(2-BENZOXAZOLYL)STILBENE ; 2,2'-(1,2-ETHENEDIYLDI-4,1-PHENYLENE)BISBENZOXAZOLE ; 2,2'-(vinylenedi-p-phenylene)bisbenzoxazole ; 2,2 '-(1,2-ethenediyldi-4,1-phenylene)bis-benzoxazol ; OB-C ; Fluorescent Brightener OB-1 CI 393 ; 1,2-Bis(4-(benzo[d]oxazol-2-yl) phenyl)ethene ; ptical Brightening Agent OB-1 |
| CAS No. | 1533-45-5 |
| Molecular formula | C28H18N2O2 |
| Molecular weight | 414.45 |
| EINECS number | 216-245-3 |
| Melting point | >300 °C(lit.) |
| Boiling point | 533.34°C (rough estimate) |
| density | 1.2151 (rough estimate) |
| Acidity coefficient (pKa) | 1.45±0.10(Predicted) |
| Chemical nature |
Fluorescent brightener ob-1,2,2 - (4,4-stilbene) dibenzoxazole is a yellow crystal, melting point 359-362 ℃, insoluble in water, odorless, stable performance, maximum absorption spectral wavelength of 374nm, strong fluorescence, fluorescence emission wavelength of 434nm chemicalbook. Fluorescent brightener OB-1 is a high-efficiency fluorescent brightener for polyester fiber. At the same time, it is widely used in ABS, PS, hips, PC, PP, PE, EVA and rigid PVC. It has the characteristics of excellent whitening effect, excellent thermal stability and little addition.
Fluorescent brightener can absorb invisible ultraviolet light (wavelength range is about 360-380nm) and convert it into blue light or purple visible light with longer wavelength. Therefore, it can compensate for the unwanted yellowish color in the base chemical book, and reflect more visible light in the range of 400-600nm than the original incident wavelength, so as to make the product appear whiter, brighter and brighter. |
| use |
Used for whitening of polyester stock solution, especially suitable for whitening of polyester fiber and whitening of polyester, cotton and other blended fabrics, and also for whitening of plastic products. |
| Dangerous Goods Sign | Xi |
| Hazard category code | 36/37/38 |
| safety instructions | 26-37/39-24/25 |
| WGK Germany | 1 |
| HS Code | 29349990 |
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