Has been shown to kill acne bacteria by generating reactive oxygen species in the sebaceous follicle. However, this process creates free radicals, so use only when needed and only on specific spots.
Benzoyl peroxide (BPO)
|Jmol 3D image||Interactive graph|
|Molar mass||242.23 g·mol−1|
|Melting point||103 to 105 °C (217 to 221 °F; 376 to 378 K) decomposes|
|D10AE01 (WHO) QD11|
|Main hazards||irritant, explosive|
|Safety data sheet||See: data page|
EU classification (DSD)
| E (E)
|R-phrases||R3, R7, R36, R43|
|S-phrases||(S2), S3/7, S14, S36/37/39|
|Flash point||80 °C; 176 °F; 353 K|
|80 °C (176 °F; 353 K)|
|Lethal dose or concentration (LD, LC):|
LD50 (Median dose)
|7710 mg/kg (mouse, oral)|
LC50 (Median concentration)
|7000 mg/m3 (mouse, 4 hr)|
|US health exposure limits (NIOSH):|
|TWA 5 mg/m3|
|TWA 5 mg/m3|
IDLH (Immediate danger)
|Supplementary data page|
|Refractive index (n),
Dielectric constant (εr), etc.
|UV, IR, NMR, MS|
|what is ?)(|
Benzoyl peroxide (BPO) is an organic compound in the peroxide family. It consists of two benzoyl groups bridged by a peroxide link. Its structural formula is [C6H5C(O)]2O2. It is one of the most important organic peroxides in terms of applications and the scale of its production. Benzoyl peroxide is used as an acne treatment, for bleaching flour, hair and teeth, for cross-linking polyester resins, and for many other purposes.
It is on the World Health Organization's List of Essential Medicines, the most important medications needed in a basic health system.