2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene CAS 7128-64-5
2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene is yellow-green powder. The melting point is 200 ~ 201℃, and the decomposition temperature is greater than 220℃. Insoluble in water, soluble in alkanes, fats, mineral oils, waxes and common organic solvents.
| Product Name | Optical brightener OB (C.I. 184 / C.I.28 ) | |
| MF | C26H26N2O2S | |
| EINECS No | 230-426-4 | |
| CAS No | 7128-64-5, | |
| Chemical Name | 2,5-bis(5-tert-butyl benzoxazoly-2’-)thiophene | |
| Appearance | Light green powder | |
| Purity | ≥98% | |
| Melting point | 198~202 °C | |
| Volatile: | <0.5% | |
| Package | 20kg per carton, 25/30kg per fiber drum with PE liner, or as per the customers' requirements. | |
| Applications:
It is widely used in thermoplastic such as PVC, PE, PP, ABS, PS, and unsaturated resin and paint, ink and oil soluble coatings. |
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| Properties:
The product is light green or green powder, non-toxic and tasteless, can dissolve in alkane, fat, mineral oil, paraffin and most organic solvents, the absorption spectra of the largest value for 375 mm (in ethanol). |
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| Dosage:
PVC whitening: 0.01~0.05%; Polystyrene :0001~0.001%; Polyolefin matrix: 0.0005~0.001% |
to improve the light intensity: 0.0001~0.001% ABS:0.01~0.05%; White matrix: 0.005~0.05% |
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Optical Brighter OB used for brightening polyvinyl chloride, polystyrene, ABS resin, polyolefin and polyester, also used for acetate fiber, polymethyl methacrylate, foam leather whitening. Also used in varnishes, paints, UV-curable coatings, printing inks, fats, oils, packaging materials. It can be used as anti-counterfeiting mark in printing ink. In photography, it can be used to improve the whiteness of the non-image area of the photo, which can be converted into fluorescence when the photo is irradiated by ultraviolet light. Produce brightening effect.
25kg/bag
2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene CAS 7128-64-5
2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene CAS 7128-64-5
