4159-77-7
| Name | ROSE BENGAL LACTONE |
| CAS | 4159-77-7 |
| EINECS(EC#) | 223-993-4 |
| Molecular Formula | C20H4Cl4I4O5 |
| MDL Number | MFCD00013321 |
| Molecular Weight | 973.67 |
| MOL File | 4159-77-7.mol |
Chemical Properties
| Appearance | Bluish-pink powder. Soluble in water. |
| Melting point | 280 °C (dec.)(lit.) |
| storage temp. | room temp |
| Boiling point | 741.8±60.0 °C(Predicted) |
| density | 2.96±0.1 g/cm3(Predicted) |
| form | powder |
| pka | 7.03±0.20(Predicted) |
| color | pink to red |
| ε(extinction coefficient) | ≥10000 at 317-323nm ≥30000 at 516-522nm ≥95000 at 554-560nm |
| λmax | 557 nm |
| Uses | |
| EPA Substance Registry System | Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 4,5,6,7-tetrachloro-3',6'-dihydroxy-2',4',5',7'-tetraiodo- (4159-77-7) |
Safety Data
| Symbol(GHS) |  GHS07 |
| Signal word | Warning |
| Hazard statements | H315-H319-H335 |
| Precautionary statements | P261-P264-P271-P280-P302+P352-P305+P351+P338 |
| Hazard Codes | Xi |
| Risk Statements | |
| Safety Statements | |
| WGK Germany | 3 |