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| | Fluorescent Brightener 185 Basic information |
| Product Name: | Fluorescent Brightener 185 | | Synonyms: | 2,2'-(2,5-thiophenediyl)bis-benzoxazole;2,5-di(benzoxazol-2-yl)thiophene;2,5-Bis(2-benzoxazolyl)thiophene;fluorescent brightener 185;C.I. Fluorescent Brightener 172;c.i. 515240;2,2'-thiophene-2,5-diylbis(benzoxazole);Benzoxazole, 2,2-(2,5-thiophenediyl)bis- | | CAS: | 2866-43-5 | | MF: | C18H10N2O2S | | MW: | 318.35 | | EINECS: | 220-685-1 | | Product Categories: | Industrial/Fine Chemicals | | Mol File: | 2866-43-5.mol |  |
| | Fluorescent Brightener 185 Chemical Properties |
| Melting point | 216-220°C | | Boiling point | 466.4±30.0 °C(Predicted) | | density | 1.385 | | refractive index | 1.6000 (estimate) | | pka | 1.27±0.10(Predicted) | | Water Solubility | 9.551ug/L(25 ºC) | | EPA Substance Registry System | 2,5-Bis(2-benzoxazoyl)thiophene (2866-43-5) |
| Toxicity | LD50 oral in rat: > 30gm/kg |
| | Fluorescent Brightener 185 Usage And Synthesis |
| Chemical Properties | This product is light yellow crystalline powder with bright blue fluorescence. Melting point 218～219 ℃. Miscible with water in any ratio. Hard water resistance, acid resistance, alkali resistance. The fabric after using it has good light fastness, chlorine bleaching resistance and washing fastness. | | Uses | Fluorescent Brightener 185 is used as a whitening treatment agent for acetate fiber, nylon, polyester, polypropylene, vinyl and blended fibers. | | Synthesis | Using o-aminophenol and chlorobenzene as raw materials, Fluorescent Brightener 185 can be obtained after reaction. |
| | Fluorescent Brightener 185 Preparation Products And Raw materials |
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