Introduction：Basic information about Fluorescent Brightener 185 CAS 2866-43-5, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
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 |
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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) |
Safety Information
| TSCA | TSCA listed |
| 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
