Product Description of Quinhydrone (CAS#106-34-3)
Quinhydrone is a dark green crystalline solid with the molecular formula C₁₂H₁₀O₄, representing a 1:1 complex of hydroquinone and benzoquinone. It is primarily used as a redox indicator in pH electrodes, electrochemical studies, and organic synthesis. The compound is light-sensitive and should be stored in cool, dark conditions. Proper protective equipment should be used when handling.
Quinhydrone Chemical Properties
| Melting point | 167-172 °C (lit.) |
| Boiling point | 285 °C |
| Density | 1.32 |
| Bulk density | 300kg/m3 |
| Refractive index | 1.4270 (estimate) |
| Storage temp | Store below +30°C. |
| Solubility | 4g/l |
| Form | Crystalline Powder |
| Color | Dark green |
| Specific Gravity | 0.863 (20/4℃) |
| Water Solubility | 4 g/L (20 ºC) |
| Sensitive | Light Sensitive |
| Merck | 14,8058 |
| BRN | 3919222 |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| LogP | 0.644 (est) |
| CAS DataBase Reference | 106-34-3(CAS DataBase Reference) |
| NIST Chemistry Reference | Quinhydrone(106-34-3) |
| EPA Substance Registry System | Quinhydrone (106-34-3) |
| Hazard Codes | Xn,N |
| Risk Statements | 22-36/37/38-50 |
| Safety Statements | 26-36-61-37/39-29 |
| RIDADR | UN 2811 6.1/PG 3 |
| WGK Germany | 3 |
| RTECS | VA4550000 |
| TSCA | Yes |
| HS Code | 2942 00 00 |
| HazardClass | 6.1 |
| PackingGroup | III |
| Toxicity | LD50 orally in rats: 225 mg/kg (Woodward) |
Product Application of Quinhydrone (CAS#106-34-3)
Quinhydrone is utilized as a redox indicator in pH electrodes, electrochemical experiments, and organic synthesis. It is also applied in analytical chemistry and the preparation of light-sensitive materials.
