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optical brightener OB |
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BBOT |
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2,2-(2,5-thiophenediyl) bis [5-(1,1-dimethylethy)] |
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7128-64-5 |
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used for whitening and brightening agents for plastic industry such as :ABS,PVC,PP,PE,PS etc.and printing inks ,paints. |
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1) Chemical name: 2,2-(2,5-thiophenediyl) bis [5-(1,1-dimethylethy)] benzoxazole 2) Index number: C.I.184 3) CAS number: 7128-64-5 4) Molecular formula: C27H28O2N2S 5) Appearance: light yellow or milk white power 6) Structure: benzoxazole type compound 7) Melting point: 201 쭯 202oC 8) Purity: ¡Ý 99.0% 9) Ash: ¡Ü 0.3% 10) Max. volatile content: 0.3% 11) Particle size: 200meshes 12) Max. absorption wavelength in ethanol: 375nm 13) Solubility: soluble in paraffin, mineral oils, and ordinary organic solvents
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