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 changeof fusion, ΔfusHo ? kJ/mol Std entropy changeof fusion, ΔfusSo ? J/(mol·K) Std enthalpy changeof vaporization, ΔvapHo ? kJ/mol Std entropy changeof vaporization, ΔvapSo ? J/(mol·K) Solid properties Std enthalpy changeof formation, ΔfHosolid -369.4 kJ/mol Standard molar entropy,Sosolid ? J/(mol K) Specific heat capacity, cp ? J/(mol K) Liquid properties Std enthalpy changeof formation, ΔfHoliquid ? kJ/mol Standard molar entropy,Soliquid ? J/(mol K) Specific heat capacity, cp ? J/(mol K) Gas properties Std enthalpy changeof formation, ΔfHogas -281.7 kJ/mol Standard molar entropy,Sogas ? 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−1 when solvent is CS2 NMR Proton NMR Carbon-13 NMR Other NMR data MS Masses of main fragments
References