PRODUCT 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) |
Description and Uses
Fluorescent Brightener 185 is used as a whitening treatment agent for acetate fiber, nylon, polyester, polypropylene, vinyl and blended fibers.
Safety
| Symbol(GHS) |  GHS07 |
| Signal word | Warning |
| Hazard statements | H302-H315-H319-H335 |
| Precautionary statements | P261-P280-P301+P312-P302+P352-P305+P351+P338 |
| Toxicity | LD50 oral in rat: > 30gm/kg |
