This page provides supplementary chemical data on benzoyl peroxide.
Material Safety Data Sheet
The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source such as eChemPortal search query 94-36-0, and follow its directions.
- MSDS from Fisher Scientific (archived from SDSdata.org dead link), which was a redirect to archived page (archived from msdssearchengine.com dead link).
Structure and properties
| Structure and properties | |
|---|---|
| Index of refraction, nD | 1.543 |
| Abbe number | ? |
| Dielectric constant, εr | ? ε0 at ? °C |
| Bond strength | ? |
| Bond length | ? |
| Bond angle | ? |
| Magnetic susceptibility | ? |
Thermodynamic properties
| Phase behavior | |
|---|---|
| Triple point | ? K (? °C), ? Pa |
| Critical point | ? K (? °C), ? Pa |
| Std enthalpy change of fusion, ΔfusH |
? kJ/mol |
| Std entropy change of fusion, ΔfusS |
? J/(mol·K) |
| Std enthalpy change of vaporization, ΔvapH |
? kJ/mol |
| Std entropy change of vaporization, ΔvapS |
? J/(mol·K) |
| Solid properties | |
| Std enthalpy change of formation, ΔfHsolid |
-369.4 kJ/mol |
| Standard molar entropy, Ssolid |
? J/(mol K) |
| Specific heat capacity, cp | ? J/(mol K) |
| Liquid properties | |
| Std enthalpy change of formation, ΔfHliquid |
? kJ/mol |
| Standard molar entropy, Sliquid |
? J/(mol K) |
| Specific heat capacity, cp | ? J/(mol K) |
| Gas properties | |
| Std enthalpy change of formation, ΔfHgas |
-281.7 kJ/mol |
| Standard molar entropy, Sgas |
? J/(mol K) |
| Specific heat capacity, cp | ? J/(mol K) |
Spectral data
| UV-Vis | |
|---|---|
| λmax | ? nm |
| Extinction coefficient, ε | ? |
| IR | |
| Major absorption bands | 700.3 (s), 993 (s), 1219 (s), 1647 (w), 1795 (s) cm when solvent is CS2 |
| NMR | |
| Proton NMR | |
| Carbon-13 NMR | |
| Other NMR data | |
| MS | |
| Masses of main fragments |
|
- Except where noted otherwise, data relate to Standard temperature and pressure.
- Reliability of data general note.
References
- Shreve, O. D.; Heether, M. R.; Knight, H. B.; Swern, Daniel (February 1951). "Infrared Absorption Spectra of Some Hydroperoxides, Peroxides, and Related Compounds". Analytical Chemistry. 23 (2): 282–285. doi:10.1021/ac60050a015.