Caprylyl peroxide

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  • Identifiers

    CAS number
    762-16-3

    Molecular formula
    C16H30O4

    SMILES
    CCCCCCCC(=O)OOC(=O)CCCCCCC

    Safety labels

    Flammable
    Flammable

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Fatty 69.61%
    Fruity 53.05%
    Waxy 52.18%
    Oily 50.73%
    Buttery 45.28%
    Creamy 43.68%
    Dairy 39.37%
    Winey 39.37%
    Sweet 39.36%
    Peach 37.51%

     

    Flavor
    Waxy 64.87%
    Oily 53.14%
    Fruity 53.0%
    Fatty 48.12%
    Creamy 43.86%
    Sweet 41.06%
    Soapy 39.58%
    Coconut 34.35%
    Green 31.9%
    Mild 30.63%

     

    Odor impact est.
    Medium

  • Properties

    XLogP3-AA
    6.2

    pKa est.
    7.17 (neutral)

    Molecular weight
    286.41 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    323°C

    Melting point expt.

    • 29 °C

    Flash point

    • 141.85 ˚C est.

  • Synonyms

    • Dioctanoyl peroxide
    • 762-16-3
    • Octanoyl peroxide
    • Peroxide, bis(1-oxooctyl)
    • CAPRYLYL PEROXIDE
    • Caprolyl peroxide
    • Dicaprylyl peroxide
    • Capryl peroxide
    • octanoyl octaneperoxoate
    • H709TZ1FAF
    • PERKADOX SE
    • HSDB 2752
    • EINECS 212-094-2
    • CAPRYLYL PEROXIDE [HSDB]
    • DTXSID0061086
    • N-OCTANOYL PEROXIDE, (TECHNICALLY PURE)
    • N-OCTANOYL PEROXIDE, [TECHNICALLY PURE]
    • UNII-H709TZ1FAF
    • di-n-octanoyl peroxide
    • PEROYL O
    • PERKADOX SE 8
    • Peroxide, bis(1oxooctyl)
    • SCHEMBL24125
    • DTXCID7047855
    • AKOS028108376
    • NS00020542
    • A11799
    • A865536
    • Q27279717
    • 212-094-2

  • Applications

    Caprylyl peroxide (CAS 762-16-3) is primarily used as a radical initiator in industrial polymerization and resin formulations. In polymers and coatings, it initiates free-radical polymerization of vinyl and acrylate monomers, enabling the production of acrylic resins, polyesters, coatings, inks, and adhesives, and it supports crosslinking in polyurethane and epoxy systems. It is also employed in the manufacture of specialty polymers and elastomers via radical processes, including hot-cure formulations for unsaturated polyester resins.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 475.89
    methanol 497.25
    isopropanol 463.1
    water 0.12
    ethyl acetate 2983.75
    n-propanol 472.44
    acetone 3423.5
    n-butanol 493.91
    acetonitrile 1765.35
    DMF 5329.94
    toluene 1681.49
    isobutanol 444.03
    1,4-dioxane 1966.72
    methyl acetate 2356.08
    THF 5016.94
    2-butanone 3079.04
    n-pentanol 405.11
    sec-butanol 540.16
    n-hexane 166.14
    ethylene glycol 58.87
    NMP 8356.51
    cyclohexane 444.47
    DMSO 5041.3
    n-butyl acetate 1931.02
    n-octanol 285.43
    chloroform 6140.71
    n-propyl acetate 2084.22
    acetic acid 1037.23
    dichloromethane 8027.59
    cyclohexanone 6333.39
    propylene glycol 132.53
    isopropyl acetate 2138.14
    DMAc 5463.08
    2-ethoxyethanol 898.04
    isopentanol 592.38
    n-heptane 69.98
    ethyl formate 1162.01
    1,2-dichloroethane 6792.2
    n-hexanol 333.33
    2-methoxyethanol 1340.13
    isobutyl acetate 1096.89
    tetrachloromethane 857.93
    n-pentyl acetate 1648.75
    transcutol 4525.36
    n-heptanol 227.86
    ethylbenzene 786.68
    MIBK 1695.77
    2-propoxyethanol 897.48
    tert-butanol 751.63
    MTBE 1568.51
    2-butoxyethanol 712.5
    propionic acid 897.06
    o-xylene 1120.35
    formic acid 246.48
    diethyl ether 1382.52
    m-xylene 1010.31
    p-xylene 1157.93
    chlorobenzene 3088.96
    dimethyl carbonate 1057.21
    n-octane 36.89
    formamide 896.42
    cyclopentanone 6963.97
    2-pentanone 2787.17
    anisole 1765.73
    cyclopentyl methyl ether 3115.25
    gamma-butyrolactone 6502.0
    1-methoxy-2-propanol 1223.32
    pyridine 4132.03
    3-pentanone 2474.53
    furfural 4931.3
    n-dodecane 25.02
    diethylene glycol 482.45
    diisopropyl ether 555.56
    tert-amyl alcohol 841.19
    acetylacetone 4394.74
    n-hexadecane 32.34
    acetophenone 2133.27
    methyl propionate 2428.88
    isopentyl acetate 1823.93
    trichloroethylene 11944.24
    n-nonanol 271.34
    cyclohexanol 1058.99
    benzyl alcohol 934.19
    2-ethylhexanol 342.62
    isooctanol 240.64
    dipropyl ether 634.98
    1,2-dichlorobenzene 3303.35
    ethyl lactate 658.65
    propylene carbonate 3124.92
    n-methylformamide 1794.25
    2-pentanol 472.27
    n-pentane 109.63
    1-propoxy-2-propanol 819.44
    1-methoxy-2-propyl acetate 1993.31
    2-(2-methoxypropoxy) propanol 950.54
    mesitylene 653.17
    ε-caprolactone 4624.52
    p-cymene 351.4
    epichlorohydrin 7343.27
    1,1,1-trichloroethane 5707.57
    2-aminoethanol 191.51
    morpholine-4-carbaldehyde 4526.91
    sulfolane 9212.99
    2,2,4-trimethylpentane 91.19
    2-methyltetrahydrofuran 3997.89
    n-hexyl acetate 1901.79
    isooctane 58.24
    2-(2-butoxyethoxy)ethanol 1187.44
    sec-butyl acetate 1608.37
    tert-butyl acetate 2534.44
    decalin 233.62
    glycerin 223.5
    diglyme 2955.9
    acrylic acid 820.14
    isopropyl myristate 525.24
    n-butyric acid 1637.42
    acetyl acetate 2162.71
    di(2-ethylhexyl) phthalate 475.2
    ethyl propionate 2145.46
    nitromethane 4120.8
    1,2-diethoxyethane 1842.5
    benzonitrile 1793.01
    trioctyl phosphate 285.48
    1-bromopropane 2737.05
    gamma-valerolactone 7015.82
    n-decanol 177.51
    triethyl phosphate 620.41
    4-methyl-2-pentanol 311.11
    propionitrile 1303.9
    vinylene carbonate 2352.61
    1,1,2-trichlorotrifluoroethane 3430.15
    DMS 1864.6
    cumene 452.5
    2-octanol 235.42
    2-hexanone 1759.19
    octyl acetate 651.25
    limonene 614.41
    1,2-dimethoxyethane 2475.3
    ethyl orthosilicate 557.56
    tributyl phosphate 493.71
    diacetone alcohol 1936.05
    N,N-dimethylaniline 1102.74
    acrylonitrile 1940.51
    aniline 1400.48
    1,3-propanediol 371.24
    bromobenzene 3894.54
    dibromomethane 4800.22
    1,1,2,2-tetrachloroethane 9737.38
    2-methyl-cyclohexyl acetate 1109.18
    tetrabutyl urea 700.99
    diisobutyl methanol 255.25
    2-phenylethanol 732.48
    styrene 1139.46
    dioctyl adipate 903.16
    dimethyl sulfate 2255.76
    ethyl butyrate 1447.0
    methyl lactate 908.41
    butyl lactate 948.95
    diethyl carbonate 844.38
    propanediol butyl ether 674.31
    triethyl orthoformate 819.87
    p-tert-butyltoluene 347.74
    methyl 4-tert-butylbenzoate 1300.31
    morpholine 2826.01
    tert-butylamine 492.89
    n-dodecanol 127.97
    dimethoxymethane 2275.65
    ethylene carbonate 1931.26
    cyrene 1046.67
    2-ethoxyethyl acetate 2177.0
    2-ethylhexyl acetate 1473.77
    1,2,4-trichlorobenzene 3739.63
    4-methylpyridine 4526.21
    dibutyl ether 843.94
    2,6-dimethyl-4-heptanol 255.25
    DEF 4287.45
    dimethyl isosorbide 2215.0
    tetrachloroethylene 5319.7
    eugenol 1053.78
    triacetin 1883.61
    span 80 786.83
    1,4-butanediol 160.63
    1,1-dichloroethane 5271.1
    2-methyl-1-pentanol 502.8
    methyl formate 1267.35
    2-methyl-1-butanol 580.75
    n-decane 49.73
    butyronitrile 1327.21
    3,7-dimethyl-1-octanol 391.27
    1-chlorooctane 396.84
    1-chlorotetradecane 126.73
    n-nonane 47.96
    undecane 33.06
    tert-butylcyclohexane 150.86
    cyclooctane 127.3
    cyclopentanol 1169.7
    tetrahydropyran 2724.46
    tert-amyl methyl ether 1419.29
    2,5,8-trioxanonane 1717.28
    1-hexene 597.04
    2-isopropoxyethanol 760.76
    2,2,2-trifluoroethanol 510.22
    methyl butyrate 2885.18

    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