Benzoyl Peroxide

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  • Identifiers

    CAS number
    94-36-0

    Molecular formula
    C14H10O4

    SMILES
    C1=CC=C(C=C1)C(=O)OOC(=O)C2=CC=CC=C2

    Safety labels

    Explosive
    Explosive

    Flammable
    Flammable

    Irritant
    Irritant

    Environmental Hazard
    Environmental

  • Odor profile

    Balsamic 60.54%
    Green 51.69%
    Herbal 41.08%
    Honey 37.58%
    Sweet 36.05%
    Phenolic 33.49%
    Spicy 31.57%
    Metallic 29.64%
    Floral 29.37%
    Fruity 28.77%

    Scent© AI

  • Properties

    XLogP3-AA
    3.5

    Molecular weight
    242.23 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Melting point expt.

    • 217 to 221 °F (decomposes) (NTP, 1992)
    • 103 - 106
    • 104.5 °C
    • 106 - 108 °C
    • 217 °F

    Boiling point

    • Decomposes explosively (NTP, 1992)
    • Decomposes explosively above melting point. Does not reach boiling point.
    • Explodes
    • decomposes explosively
    • Decomposes explosively

    Flash point est.
    148.96 ˚C

    Flash point expt.

    • 176 °F (NIOSH, 2024)
    • 176 °F
    • 80 °C

    Solubility expt.

    • less than 1 mg/mL at 79 °F (NTP, 1992)
    • <1%
    • In water, 9.10 mg/L at 25 °C
    • Sparingly soluble in water
    • Slightly soluble in water
    • Sparingly soluble in alcohol; soluble in benzene, chloroform, ether; 1 g dissolves in 40 mL carbon disulfide, in about 50 mL olive oil
    • For more Solubility (Complete) data for Dibenzoyl peroxide (6 total), please visit the HSDB record page.
    • 0.0091 mg/mL at 25 °C
    • Solubility in water: poor
    • <1%

  • Synonyms

    • BENZOYL PEROXIDE
    • 94-36-0
    • Peroxide, dibenzoyl
    • Dibenzoyl peroxide
    • Benzoyl superoxide
    • Benzoperoxide
    • Benoxyl
    • Lucidol
    • Acetoxyl
    • Oxylite
    • Panoxyl
    • Persadox
    • Benzol peroxide
    • Dibenzoylperoxid
    • Diphenylglyoxal peroxide
    • Benzoylperoxid
    • Luperco AST
    • Asidopan
    • Loroxide
    • Theraderm
    • Benzac
    • Eloxyl
    • Mytolac
    • benzoyl benzenecarboperoxoate
    • Resdan Akne
    • Epi-Clear
    • Persa-Gel
    • Akneroxid 5
    • Dry and Clear
    • Duresthin 5
    • Nayper BO
    • Benzoylperoxyde
    • Debroxide
    • Novadelox
    • Vanoxide
    • Acnegel
    • Incidol
    • Garox
    • Topex
    • Xerac
    • Dibenzoylperoxyde
    • Luperox fl
    • Peroxyde de benzoyle
    • Cadox bs
    • Quinolor compound
    • Lucidol B 50
    • Lucidol G 20
    • Perossido di benzoile
    • Luperco AA
    • Nayper B and bo
    • benzoylperoxide
    • Aztec BPO
    • Benzoic acid, peroxide
    • Benzaknen
    • Brevoxyl
    • Desanden
    • Akneroxide L
    • Norox bzp-250
    • Norox bzp-C-35
    • Desquam E
    • Benzac W
    • Clear By Design
    • Cadox B
    • Benzagel 10
    • Lucidol (peroxide)
    • Benzagel
    • Benzashave
    • Superox 744
    • Cadox 40E
    • Desquam X
    • Desquam-X
    • Acne-Aid Cream
    • Benbel C
    • Oxy 5
    • Cadox B-CH 50
    • Cadat BPO
    • Lucidol-70
    • Aksil 5
    • Lucidol 50P
    • Benzaknew
    • Benzefoam
    • Lucidol KL 50
    • Oxy-10 Cover
    • Chaloxyd BP 50FT
    • Abcat 40
    • Benox 50
    • Cadet
    • Diphenylperoxyanhydride
    • Cadox B 40E
    • Cadox B 50P
    • Cadox B 70W
    • Oxy-5
    • BZF-60
    • Fostex BPO
    • pHisoAc BP
    • Peroxide, Benzoyl
    • Xerac BP
    • Benzoyl peroxide [USAN]
    • Lucidol 75FP
    • Superoxide, Benzoyl
    • Benoxyl (5&10) Lotion
    • Epi Clear Antiseptic Lotion
    • EPSOLAY
    • Stri-dex B.P.
    • benzoic peroxyanhydride
    • OXY WASH
    • Peroxyderm
    • Benzoyl
    • Dermoxyl
    • Luzidol
    • Nericur
    • OXY-10
    • Peroxydex
    • Preoxydex
    • Sanoxit
    • Superox
    • Benzoylperoxid [German]
    • Bepio
    • benzoyl-peroxide
    • dibenzoylperoxide
    • Benzoyl peroxyde
    • Ins no.928
    • Diphenylglyoxal Superoxide
    • NSC-671
    • NSC-675
    • Akneroxid L
    • Anhydrous benzoyl peroxide
    • Benzoyl peroxide anhydrous

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 25.51
    methanol 34.07
    isopropanol 13.31
    water 0.02
    ethyl acetate 437.07
    n-propanol 25.91
    acetone 424.51
    n-butanol 22.12
    acetonitrile 329.08
    DMF 1115.66
    toluene 392.48
    isobutanol 16.43
    1,4-dioxane 324.51
    methyl acetate 590.08
    THF 641.11
    2-butanone 525.4
    n-pentanol 18.44
    sec-butanol 27.0
    n-hexane 6.35
    ethylene glycol 5.79
    NMP 1239.83
    cyclohexane 13.44
    DMSO 244.68
    n-butyl acetate 172.62
    n-octanol 15.92
    chloroform 753.77
    n-propyl acetate 155.11
    acetic acid 85.15
    dichloromethane 1018.48
    cyclohexanone 604.26
    propylene glycol 6.64
    isopropyl acetate 206.16
    DMAc 1259.16
    2-ethoxyethanol 76.1
    isopentanol 23.33
    n-heptane 5.81
    ethyl formate 128.89
    1,2-dichloroethane 981.18
    n-hexanol 23.72
    2-methoxyethanol 157.3
    isobutyl acetate 59.1
    tetrachloromethane 33.59
    n-pentyl acetate 97.68
    transcutol 581.6
    n-heptanol 14.68
    ethylbenzene 118.84
    MIBK 156.53
    2-propoxyethanol 96.82
    tert-butanol 23.7
    MTBE 109.7
    2-butoxyethanol 57.29
    propionic acid 84.25
    o-xylene 171.38
    formic acid 31.42
    diethyl ether 185.03
    m-xylene 144.48
    p-xylene 123.79
    chlorobenzene 549.24
    dimethyl carbonate 302.1
    n-octane 3.41
    formamide 182.46
    cyclopentanone 930.78
    2-pentanone 360.14
    anisole 307.97
    cyclopentyl methyl ether 323.05
    gamma-butyrolactone 997.05
    1-methoxy-2-propanol 101.78
    pyridine 1112.24
    3-pentanone 436.22
    furfural 793.13
    n-dodecane 2.56
    diethylene glycol 53.41
    diisopropyl ether 41.67
    tert-amyl alcohol 39.68
    acetylacetone 573.33
    n-hexadecane 3.27
    acetophenone 341.22
    methyl propionate 522.38
    isopentyl acetate 142.36
    trichloroethylene 2297.19
    n-nonanol 16.94
    cyclohexanol 44.34
    benzyl alcohol 118.53
    2-ethylhexanol 26.72
    isooctanol 14.43
    dipropyl ether 63.5
    1,2-dichlorobenzene 469.9
    ethyl lactate 57.27
    propylene carbonate 348.82
    n-methylformamide 330.45
    2-pentanol 21.99
    n-pentane 4.75
    1-propoxy-2-propanol 67.63
    1-methoxy-2-propyl acetate 241.09
    2-(2-methoxypropoxy) propanol 114.14
    mesitylene 65.14
    ε-caprolactone 483.34
    p-cymene 41.58
    epichlorohydrin 1458.3
    1,1,1-trichloroethane 499.43
    2-aminoethanol 14.84
    morpholine-4-carbaldehyde 815.85
    sulfolane 802.39
    2,2,4-trimethylpentane 4.94
    2-methyltetrahydrofuran 424.16
    n-hexyl acetate 124.68
    isooctane 3.17
    2-(2-butoxyethoxy)ethanol 132.91
    sec-butyl acetate 117.27
    tert-butyl acetate 204.54
    decalin 12.24
    glycerin 16.25
    diglyme 459.8
    acrylic acid 112.25
    isopropyl myristate 45.72
    n-butyric acid 90.15
    acetyl acetate 272.82
    di(2-ethylhexyl) phthalate 37.29
    ethyl propionate 202.93
    nitromethane 862.3
    1,2-diethoxyethane 224.66
    benzonitrile 255.96
    trioctyl phosphate 20.75
    1-bromopropane 261.64
    gamma-valerolactone 902.68
    n-decanol 12.79
    triethyl phosphate 63.37
    4-methyl-2-pentanol 15.64
    propionitrile 184.18
    vinylene carbonate 346.98
    1,1,2-trichlorotrifluoroethane 390.26
    DMS 300.88
    cumene 48.93
    2-octanol 12.47
    2-hexanone 158.48
    octyl acetate 54.63
    limonene 58.86
    1,2-dimethoxyethane 299.18
    ethyl orthosilicate 52.05
    tributyl phosphate 37.43
    diacetone alcohol 165.85
    N,N-dimethylaniline 138.31
    acrylonitrile 427.09
    aniline 228.06
    1,3-propanediol 22.86
    bromobenzene 648.6
    dibromomethane 491.94
    1,1,2,2-tetrachloroethane 1215.12
    2-methyl-cyclohexyl acetate 88.61
    tetrabutyl urea 62.32
    diisobutyl methanol 20.37
    2-phenylethanol 95.33
    styrene 193.45
    dioctyl adipate 84.26
    dimethyl sulfate 480.91
    ethyl butyrate 136.19
    methyl lactate 131.23
    butyl lactate 58.45
    diethyl carbonate 93.27
    propanediol butyl ether 38.97
    triethyl orthoformate 76.88
    p-tert-butyltoluene 37.79
    methyl 4-tert-butylbenzoate 146.32
    morpholine 408.85
    tert-butylamine 14.24
    n-dodecanol 10.46
    dimethoxymethane 448.99
    ethylene carbonate 223.5
    cyrene 125.05
    2-ethoxyethyl acetate 223.68
    2-ethylhexyl acetate 116.54
    1,2,4-trichlorobenzene 539.27
    4-methylpyridine 968.95
    dibutyl ether 64.68
    2,6-dimethyl-4-heptanol 20.37
    DEF 661.13
    dimethyl isosorbide 329.12
    tetrachloroethylene 645.74
    eugenol 122.12
    triacetin 178.37
    span 80 61.83
    1,4-butanediol 7.74
    1,1-dichloroethane 508.01
    2-methyl-1-pentanol 28.64
    methyl formate 278.16
    2-methyl-1-butanol 28.34
    n-decane 4.14
    butyronitrile 112.52
    3,7-dimethyl-1-octanol 25.51
    1-chlorooctane 26.78
    1-chlorotetradecane 11.09
    n-nonane 3.8
    undecane 3.11
    tert-butylcyclohexane 8.0
    cyclooctane 6.82
    cyclopentanol 54.24
    tetrahydropyran 268.77
    tert-amyl methyl ether 145.56
    2,5,8-trioxanonane 290.74
    1-hexene 34.41
    2-isopropoxyethanol 53.13
    2,2,2-trifluoroethanol 50.17
    methyl butyrate 240.16

    Scent© AI

1 4

IFRA standard 51

Recommendation
No restriction
Maximum acceptable concentrations in the finished product (%)
Category 1
Products applied to the lips
 No restriction Category 7A
Rinse-off products applied to the hair with some hand contact
 No restriction
Category 2
Products applied to the axillae
 No restriction Category 7B
Leave-on products applied to the hair with some hand contact
 No restriction
Category 3
Products applied to the face/body using fingertips
 No restriction Category 8
Products with significant anogenital exposure
 No restriction
Category 4
Products related to fine fragrance
 No restriction Category 9
Products with body and hand exposure, primarily rinse off
 No restriction
Category 5A
Body lotion products applied to the body using the hands (palms), primarily leave on
 No restriction Category 10A
Household care products with mostly hand contact
 No restriction
Category 5B
Face moisturizer products applied to the face using the hands (palms), primarily leave on
 No restriction Category 10B
Household care products with mostly hand contact, including aerosol/spray products (with potential leave-on skin contact)
 No restriction
Category 5C
Hand cream products applied to the hands using the hands (palms), primarily leave on
 No restriction Category 11A
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate without UV exposure
 No restriction
Category 5D
Baby Creams, baby Oils and baby talc
 No restriction Category 11B
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate with potential UV exposure
 No restriction
Category 6
Products with oral and lip exposure
 No restriction Category 12
Products not intended for direct skin contact, minimal or insignificant transfer to skin
 No restriction