Benzoyl peroxide (data page)

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 [https://www.echemportal.org/echemportal/ghs-search eChemPortal search query 94-36-0], and follow its directions.

[https://web.archive.org/web/20160304112815/http://sdsdata.org/159003 MSDS from Fisher Scientific (archived from SDSdata.org dead link)], which was a redirect to archived page [https://web.archive.org/web/20160307120753/http://msdssearchengine.com/local_msds.php?id=154819 (archived from msdssearchengine.com dead link)].

== Structure and properties ==

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! {{chembox header}} | Structure and properties

Index of refraction, n_D

| 1.543

Abbe number

Dielectric constant, ε_r

| ? ε₀ at ? °C

Bond strength

| ?

Bond length

| ?

Bond angle

| ?

Magnetic susceptibility

| ?

== Thermodynamic properties ==

border="1" cellspacing="0" cellpadding="6" style="margin:0 0 0 0.5em; background:#fff; border-collapse:collapse; border-color:#c0c090;" ! {{chembox header}} \| Phase behavior
Triple point \| ? K (? °C), ? Pa
Critical point \| ? K (? °C), ? Pa
Std enthalpy change of fusion, Δ_fusH^o \| ? kJ/mol
Std entropy change of fusion, Δ_fusS^o \| ? J/(mol·K)
Std enthalpy change of vaporization, Δ_vapH^o \| ? kJ/mol
Std entropy change of vaporization, Δ_vapS^o \| ? J/(mol·K)
{{chembox header}} \| Solid properties
Std enthalpy change of formation, Δ_fH^o_solid \| -369.4 kJ/mol
Standard molar entropy, S^o_solid \| ? J/(mol K)
Specific heat capacity, c_p \| ? J/(mol K)
{{chembox header}} \| Liquid properties
Std enthalpy change of formation, Δ_fH^o_liquid \| ? kJ/mol
Standard molar entropy, S^o_liquid \| ? J/(mol K)
Specific heat capacity, c_p \| ? J/(mol K)
{{chembox header}} \| Gas properties
Std enthalpy change of formation, Δ_fH^o_gas \| -281.7 kJ/mol
Standard molar entropy, S^o_gas \| ? J/(mol K)
Specific heat capacity, c_p \| ? J/(mol K)

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! {{chembox header}} | Phase behavior

Triple point

| ? K (? °C), ? Pa

Critical point

| ? K (? °C), ? Pa

Std enthalpy change
of fusion, Δ_fusH^o

| ? kJ/mol

Std entropy change
of fusion, Δ_fusS^o

| ? J/(mol·K)

Std enthalpy change
of vaporization, Δ_vapH^o

| ? kJ/mol

Std entropy change
of vaporization, Δ_vapS^o

| ? J/(mol·K)

{{chembox header}} | Solid properties

Std enthalpy change
of formation, Δ_fH^o_solid

| -369.4 kJ/mol

Standard molar entropy,
S^o_solid

| ? J/(mol K)

Specific heat capacity, c_p

| ? J/(mol K)

{{chembox header}} | Liquid properties

Std enthalpy change
of formation, Δ_fH^o_liquid

| ? kJ/mol

Standard molar entropy,
S^o_liquid

| ? J/(mol K)

Specific heat capacity, c_p

| ? J/(mol K)

{{chembox header}} | Gas properties

Std enthalpy change
of formation, Δ_fH^o_gas

| -281.7 kJ/mol

Standard molar entropy,
S^o_gas

| ? J/(mol K)

Specific heat capacity, c_p

| ? J/(mol K)

== Spectral data ==

border="1" cellspacing="0" cellpadding="3" style="margin:0 0 0 0.5em; background:#fff; border-collapse:collapse; border-color:#c0c090;" ! {{chembox header}} \| UV-Vis
λ_max \| ? nm
Extinction coefficient, ε \| ?
{{chembox header}} \| IR
Major absorption bands \| 700.3 (s), 993 (s), 1219 (s), 1647 (w), 1795 (s) cm⁻¹ when solvent is CS₂{{cite journal\|last1=Shreve\|first1=O. D.\|last2=Heether\|first2=M. R.\|last3=Knight\|first3=H. B.\|last4=Swern\|first4=Daniel\|title=Infrared Absorption Spectra of Some Hydroperoxides, Peroxides, and Related Compounds\|journal=Analytical Chemistry\|date=February 1951\|volume=23\|issue=2\|pages=282–285\|doi=10.1021/ac60050a015}}
{{chembox header}} \| NMR
Proton NMR \|
Carbon-13 NMR \|
Other NMR data \|
{{chembox header}} \| MS
Masses of main fragments \|

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! {{chembox header}} | UV-Vis

λ_max

| ? nm

Extinction coefficient, ε

| ?

{{chembox header}} | IR

Major absorption bands

| 700.3 (s), 993 (s), 1219 (s), 1647 (w), 1795 (s) cm⁻¹ when solvent is CS₂{{cite journal|last1=Shreve|first1=O. D.|last2=Heether|first2=M. R.|last3=Knight|first3=H. B.|last4=Swern|first4=Daniel|title=Infrared Absorption Spectra of Some Hydroperoxides, Peroxides, and Related Compounds|journal=Analytical Chemistry|date=February 1951|volume=23|issue=2|pages=282–285|doi=10.1021/ac60050a015}}

{{chembox header}} | NMR

Proton NMR

Carbon-13 NMR

Other NMR data

{{chembox header}} | MS

Masses of
main fragments

References

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