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PAR is an azo dye extensively used as a colorimetric reagent for metal ions. It forms stable chelates with various metal ions and also complexes with heavy metal ions in polar organic solvents, such as ethanol.


| Description | PAR is an azo dye extensively used as a colorimetric reagent for metal ions. It forms stable chelates with various metal ions and also complexes with heavy metal ions in polar organic solvents, such as ethanol. |
| Molecular Weight | 215.21 |
| Formula | C11H9N3O2 |
| Cas No. | 1141-59-9 |
| Storage | keep away from direct sunlight | store at -20°C | Shipping with blue ice/Shipping at ambient temperature. |

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