Rhodamine B
SIGMA/R6626 - ≥95% (HPLC)
Synonym: Basic Violet 10; Brilliant Pink B; Rhodamine O; Tetraethylrhodamine
CAS Number: 81-88-9
Empirical Formula (Hill Notation): C28H31ClN2O3
Molecular Weight: 479.01
EC Number: 201-383-9
MDL Number: MFCD00011931
Linear Formula: C28H31ClN2O3
Product Type: Chemical
| ε (extinction coefficient) | 104500-115800 at 542-554 nm in methanol |
| application(s) | diagnostic assay manufacturing hematology histology |
| assay | ≥95% (HPLC) |
| color | faint green to very dark green |
| density | 0.79 g/cm3 |
| form | powder |
| InChI | 1S/C28H30N2O3.ClH/c1-5-29 |
| InChI key | PYWVYCXTNDRMGF-UHFFFAOYSA |
| mp | 210-211 (dec.) (lit.) |
| Quality Level | 200 ![]() |
| SMILES string | [Cl-].CCN(CC)c1ccc2c(OC3= |
| solubility | H2O: 1 mg/mL |
| storage temp. | room temp |
| technique(s) | titration: suitable |
| Application: | Rhodamine B has been used: • to represent fluorescence of tetra methyl rhodamine (TMR) • in the preparation of adhesive resin for confocal laser scanning microscopy • as a fluorescent dye in intrahemolymph dye dosing and retinal image acquisition • to depict brain-specific dye capture • for imaging targets |
| General description: | Rhodamine B is a xanthene dye, which functions as a water tracer fluorescent. It is used as a colorant in textiles and food stuffs. Rhodamine B is associated with eye, skin and respiratory tract irritation. It is used as a biomarker in oral rabies vaccine. |
| Packaging: | 25, 100, 500 g in glass bottle |
| Symbol | ![]() GHS05,GHS07 |
| Signal word | Danger |
| Hazard statements | H302 - H318 - H412 |
| Precautionary statements | P264 - P270 - P273 - P280 - P301 + P312 - P305 + P351 + P338 |
| Hazard Codes | Xn |
| Risk Statements | 22-41-52/53 |
| Safety Statements | 26-39 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥95% (HPLC) |
| mp | 210-211 (dec.) (lit.) |
| Density | 0.79 g/cm3 |
| Storage Temp. | room temp |
| Colour Index Number | 45170 |
| UNSPSC | 12171500 |



