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2,2-(4,4-DIPHENOL VINYL) DIBENZOXAZOL |
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PRODUCT IDENTIFICATION |
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CAS NO. |
1533-45-5 |
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| EINECS NO. | 216-245-3 | |
| FORMULA |
C28H18N2O2 |
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| MOL WT. |
414.46 |
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| H.S. CODE | ||
| TOXICITY | ||
| SYNONYMS |
Fluorescent Whitening Agent OB-1; |
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| 2,2'-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole; Fluorescent Brightener 393; | ||
| SMILES |
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CLASSIFICATION |
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PHYSICAL AND CHEMICAL PROPERTIES |
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| PHYSICAL STATE | Bright Yellow powder | |
| MELTING POINT | 351 - 353 C | |
| BOILING POINT | ||
| SPECIFIC GRAVITY | 1.39 | |
| SOLUBILITY IN WATER | Negligible | |
| AUTOIGNITION | ||
| pH | ||
| VAPOR DENSITY | ||
| NFPA RATINGS | Health: 1; Flammability: 0; Reactivity: 0 | |
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REFRACTIVE INDEX |
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| FLASH POINT |
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| STABILITY | Stable under ordinary conditions | |
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APPLICATIONS |
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Fluorescent Whitening Agents (also called optical brightener) absorb high energy
radiation in the ultraviolet to violet region (330nm-380nm) on the part of
characteristic molecules and emit lower energy radiation in blue region in
visible spectrum (400nm-450nm), which yields the counteracting the yellowing
appearance. FWA should be transparent on the substrate and should not absorb the
visible region of the spectrum. Many FWAs contain the structure of stilbene.
Stilbene is an unsaturated hydrocarbon with the formula C6H5CH=CHC6H5. Other
nucleus of FWAs are coumarin, imidazole, 1,3-diphenyl-2-pyrazolin, naphtalimid,
benzoxazole and heteroaromatics. FWAs are used in thermoplastics, detergents,
plastic films, fibers, papers, adhesives and leathers to enhance the appearance.
2,2-(4,4-Diphenol vinyl) dibenzoxazol is a Fluorescent Whitening Agent specially suitable for shaping various kinds of plastics and their products under high temperature. It has an extra ideal whitening effect on polyester fibers as well as polyester fiber containing fabrics including polyester-cotton blend fabric. This whitening agent is equivalent to Eastobrite OB-1 made in Eastman USA. |
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| SALES SPECIFICATION | ||
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APPEARANCE |
Bright Yellow powder | |
| PURITY |
98.0% min |
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| MELTING POINT |
351 - 353 C |
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WAVE LENGTH |
374nm max in EtOH |
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| VOLATILES |
0.5% max |
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ASH |
0.1% max |
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| PARTICLE SIZE | 200 mesh | |
| TRANSPORTATION | ||
| PACKING | 25kgs in fiber drum | |
| HAZARD CLASS | Not regulated | |
| UN NO. |
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| OTHER INFORMATION | ||
| Hazard Symbols: n/a, Risk Phrases: n/a, Safety Phrases: 24/25 | ||
