Lauroyl peroxide

Overview IFRA Request a quote

  • Identifiers

    CAS number
    105-74-8

    Molecular formula
    C24H46O4

    SMILES
    CCCCCCCCCCCC(=O)OOC(=O)CCCCCCCCCCC

    Safety labels

    Flammable
    Flammable

  • Odor profile

    Fragrance
    Fatty 71.49%
    Waxy 69.49%
    Oily 46.42%
    Creamy 35.62%
    Odorless 31.67%
    Buttery 29.74%
    Dairy 28.38%
    Sweet 28.15%
    Milky 25.55%
    Soapy 19.09%

     

    Flavor
    Waxy 62.87%
    Fatty 54.51%
    Oily 50.92%
    Mild 42.47%
    Creamy 36.98%
    Coconut 35.89%
    Soapy 35.07%
    Fat 34.97%
    Bland 32.75%
    Faint 30.91%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    10.5

    pKa est.
    7.32 (neutral)

    Molecular weight
    398.6 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Melting point expt.

    • 129 °F (USCG, 1999)
    • 49 °C
    • 49-57 °C

    Boiling point

    • BOILING POINT: DECOMPOSES

    Flash point

    • 187.56 ˚C est.

    Solubility expt.

    • Insol in water; slightly sol in alc
    • Sol in oils and most organic solvents
    • Solubility in water: none

  • Synonyms

    • Lauroyl peroxide
    • 105-74-8
    • DILAUROYL PEROXIDE
    • Alperox C
    • Peroxide, bis(1-oxododecyl)
    • Laurydol
    • Dodecanoyl peroxide
    • Laurox
    • Peroxyde de lauroyle
    • LYP 97
    • Laurox Q
    • Peroxide, didodecanoyl
    • LYP 97F
    • Peroxide, bis(1-oxododecyl)-
    • Luperox LP
    • 83TLB4N1D5
    • PEROYL L
    • NSC-670
    • DTXSID1059319
    • RefChem:152523
    • DTXCID8032916
    • 203-326-3
    • dodecanoyl dodecaneperoxoate
    • Dodecanoic peroxyanhydride
    • Dyp-97F
    • Didodecanoyl peroxide
    • NSC 670
    • MFCD00008964
    • Alperox F
    • Peroxyde de lauroyle [French]
    • CCRIS 2455
    • HSDB 352
    • EINECS 203-326-3
    • BRN 1804936
    • UNII-83TLB4N1D5
    • di-Lauroyl peroxide
    • Laurox W 40
    • Diundecylperoxyanhydride #
    • EC 203-326-3
    • SCHEMBL15044
    • 4-02-00-01102 (Beilstein Handbook Reference)
    • UN 2893 (Salt/Mix)
    • WLN: 11VOOV11
    • NSC670
    • LAUROYL PEROXIDE [HSDB]
    • LAUROYL PEROXIDE [IARC]
    • CHEBI:82479
    • AKOS015904079
    • Dilauroyl peroxide, Dodecanoyl peroxide
    • UN 2124
    • Luperox(R) LP, Lauroyl peroxide, 97%
    • LS-15083
    • DB-040652
    • NS00002034
    • C19438
    • EN300-195281
    • Q2469703
    • 105-74-8

  • Applications

    Lauroyl peroxide, CAS 105-74-8, is principally used as a radical initiator for the polymerization of vinyl monomers (e.g., styrene, acrylates, and methacrylates) and for the curing of unsaturated polyester resins. It is commonly added to coating, ink, and adhesive formulations to initiate free-radical crosslinking during resin setting. In the plastics and rubber industries it acts as an initiator and crosslinking agent in polymer networks, helping to improve mechanical and thermal properties of end products. Additionally, it is used as an initiator in formulations for specialty polymers and composite materials in industrial coatings, inks, and adhesives applications.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 16.72
    methanol 20.28
    isopropanol 20.17
    water 0.12
    ethyl acetate 284.23
    n-propanol 25.9
    acetone 199.9
    n-butanol 29.73
    acetonitrile 80.72
    DMF 339.18
    toluene 138.34
    isobutanol 27.87
    1,4-dioxane 229.38
    methyl acetate 206.74
    THF 704.02
    2-butanone 255.28
    n-pentanol 32.49
    sec-butanol 36.86
    n-hexane 19.52
    ethylene glycol 2.62
    NMP 1336.57
    cyclohexane 87.65
    DMSO 363.78
    n-butyl acetate 237.99
    n-octanol 52.63
    chloroform 869.38
    n-propyl acetate 288.84
    acetic acid 80.44
    dichloromethane 1128.67
    cyclohexanone 833.08
    propylene glycol 6.77
    isopropyl acetate 261.49
    DMAc 800.76
    2-ethoxyethanol 92.17
    isopentanol 44.41
    n-heptane 14.72
    ethyl formate 107.55
    1,2-dichloroethane 730.13
    n-hexanol 27.51
    2-methoxyethanol 89.08
    isobutyl acetate 179.49
    tetrachloromethane 171.31
    n-pentyl acetate 441.06
    transcutol 741.83
    n-heptanol 40.07
    ethylbenzene 98.2
    MIBK 220.84
    2-propoxyethanol 93.03
    tert-butanol 49.28
    MTBE 144.78
    2-butoxyethanol 146.97
    propionic acid 81.79
    o-xylene 136.31
    formic acid 19.01
    diethyl ether 107.46
    m-xylene 108.52
    p-xylene 156.81
    chlorobenzene 318.18
    dimethyl carbonate 104.61
    n-octane 10.22
    formamide 58.47
    cyclopentanone 923.92
    2-pentanone 250.53
    anisole 226.15
    cyclopentyl methyl ether 408.79
    gamma-butyrolactone 874.43
    1-methoxy-2-propanol 101.82
    pyridine 410.96
    3-pentanone 260.8
    furfural 653.51
    n-dodecane 5.96
    diethylene glycol 34.61
    diisopropyl ether 64.78
    tert-amyl alcohol 78.88
    acetylacetone 485.02
    n-hexadecane 7.62
    acetophenone 346.56
    methyl propionate 227.71
    isopentyl acetate 252.56
    trichloroethylene 1414.39
    n-nonanol 55.97
    cyclohexanol 107.19
    benzyl alcohol 97.33
    2-ethylhexanol 43.13
    isooctanol 48.38
    dipropyl ether 109.96
    1,2-dichlorobenzene 473.12
    ethyl lactate 104.51
    propylene carbonate 486.03
    n-methylformamide 107.54
    2-pentanol 33.84
    n-pentane 11.48
    1-propoxy-2-propanol 114.94
    1-methoxy-2-propyl acetate 294.9
    2-(2-methoxypropoxy) propanol 181.99
    mesitylene 84.79
    ε-caprolactone 742.4
    p-cymene 66.39
    epichlorohydrin 905.99
    1,1,1-trichloroethane 792.53
    2-aminoethanol 9.74
    morpholine-4-carbaldehyde 608.55
    sulfolane 1611.35
    2,2,4-trimethylpentane 17.74
    2-methyltetrahydrofuran 531.3
    n-hexyl acetate 393.78
    isooctane 9.05
    2-(2-butoxyethoxy)ethanol 220.83
    sec-butyl acetate 258.57
    tert-butyl acetate 399.31
    decalin 42.91
    glycerin 15.5
    diglyme 658.9
    acrylic acid 70.65
    isopropyl myristate 115.91
    n-butyric acid 164.18
    acetyl acetate 269.95
    di(2-ethylhexyl) phthalate 94.4
    ethyl propionate 299.52
    nitromethane 345.08
    1,2-diethoxyethane 319.85
    benzonitrile 183.16
    trioctyl phosphate 60.96
    1-bromopropane 284.72
    gamma-valerolactone 1025.33
    n-decanol 34.36
    triethyl phosphate 154.73
    4-methyl-2-pentanol 32.11
    propionitrile 79.83
    vinylene carbonate 358.94
    1,1,2-trichlorotrifluoroethane 505.52
    DMS 280.2
    cumene 70.94
    2-octanol 47.63
    2-hexanone 238.18
    octyl acetate 139.96
    limonene 118.32
    1,2-dimethoxyethane 333.07
    ethyl orthosilicate 145.8
    tributyl phosphate 99.69
    diacetone alcohol 279.94
    N,N-dimethylaniline 170.14
    acrylonitrile 102.31
    aniline 112.6
    1,3-propanediol 20.9
    bromobenzene 442.42
    dibromomethane 611.85
    1,1,2,2-tetrachloroethane 1264.61
    2-methyl-cyclohexyl acetate 248.58
    tetrabutyl urea 169.21
    diisobutyl methanol 41.49
    2-phenylethanol 82.64
    styrene 122.42
    dioctyl adipate 228.0
    dimethyl sulfate 316.12
    ethyl butyrate 268.15
    methyl lactate 91.41
    butyl lactate 220.2
    diethyl carbonate 155.18
    propanediol butyl ether 109.16
    triethyl orthoformate 198.29
    p-tert-butyltoluene 63.05
    methyl 4-tert-butylbenzoate 345.68
    morpholine 302.85
    tert-butylamine 36.56
    n-dodecanol 23.47
    dimethoxymethane 180.19
    ethylene carbonate 305.83
    cyrene 230.6
    2-ethoxyethyl acetate 484.07
    2-ethylhexyl acetate 228.92
    1,2,4-trichlorobenzene 613.84
    4-methylpyridine 415.96
    dibutyl ether 173.54
    2,6-dimethyl-4-heptanol 41.49
    DEF 422.38
    dimethyl isosorbide 543.15
    tetrachloroethylene 720.77
    eugenol 241.13
    triacetin 501.75
    span 80 158.14
    1,4-butanediol 11.46
    1,1-dichloroethane 495.4
    2-methyl-1-pentanol 50.06
    methyl formate 86.75
    2-methyl-1-butanol 45.09
    n-decane 14.32
    butyronitrile 85.59
    3,7-dimethyl-1-octanol 63.29
    1-chlorooctane 91.9
    1-chlorotetradecane 25.3
    n-nonane 13.5
    undecane 8.6
    tert-butylcyclohexane 27.41
    cyclooctane 25.6
    cyclopentanol 118.21
    tetrahydropyran 316.64
    tert-amyl methyl ether 175.25
    2,5,8-trioxanonane 353.4
    1-hexene 52.53
    2-isopropoxyethanol 91.76
    2,2,2-trifluoroethanol 65.53
    methyl butyrate 410.98

    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