Butyric acid, 3,3-bis(3-tert-butyl-4-hydroxyphenyl)ethylene ester

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  • Identifiers

    CAS number
    32509-66-3

    Molecular formula
    C50H66O8

    SMILES
    CC(C)(C)C1=C(C=CC(=C1)C(C)(CC(=O)OCCOC(=O)CC(C)(C2=CC(=C(C=C2)O)C(C)(C)C)C3=CC(=C(C=C3)O)C(C)(C)C)C4=CC(=C(C=C4)O)C(C)(C)C)O

    Safety labels

  • Odor profile

    Fragrance
    Woody 47.32%
    Musk 46.88%
    Floral 45.04%
    Fruity 41.64%
    Dry 38.64%
    Amber 36.46%
    Balsamic 33.63%
    Powdery 33.37%
    Animal 30.36%
    Sweet 30.11%

     

    Flavor
    Bitter 53.21%
    Camphor 31.57%
    Woody 29.8%
    Mild 25.13%
    Bland 23.77%
    Herbal 22.56%
    Phenolic 21.21%
    Heather 20.25%
    Parsley 20.18%
    Broom 20.06%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    13.1

    pKa est.
    5.4 (weak acid)

    Molecular weight
    795.1 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    1558°C

    Flash point

    • 292.58 ˚C est.

  • Synonyms

    • ethylene bis[3,3-bis(3-tert-butyl-4-hydroxyphenyl)butyrate]
    • 2IRE6XVP1D
    • PLASTIC ADDITIVE 1
    • EINECS 251-073-2
    • EC 251-073-2
    • PLASTIC ADDITIVE 1 [USP-RS]
    • Ethylene bis(3,3-bis(3-tert-butyl-4-hydroxyphenyl)butyrate)
    • ETHYLENE 3,3-BIS(3-TERT-BUTYL-4-HYDROXYPHENYL)BUTYRATE
    • Benzenepropanoic acid, 3-(1,1-dimethylethyl)-.beta.-[3-(1,1-dimethylethyl)-4-hydroxyphenyl]-4-hydroxy-.beta.-methyl-, 1,2-ethanediyl ester
    • Benzenepropanoic acid, 3-(1,1-dimethylethyl)-beta-(3-(1,1-dimethylethyl)-4-hydroxyphenyl)-4-hydroxy-beta-methyl-, 1,1'-(1,2-ethanediyl) ester
    • Benzenepropanoic acid, 3-(1,1-dimethylethyl)-beta-(3-(1,1-dimethylethyl)-4-hydroxyphenyl)-4-hydroxy-beta-methyl-, 1,2-ethanediyl ester
    • 3,3-BIS(3-TERT-BUTYL-4-HYDROXYPHENYL)ETHYLENE BUTYRATE
    • PLASTIC ADDITIVE 1 (USP-RS)
    • 1,2-ETHANEDIYL BIS(3,3-BIS(3-TERT-BUTYL-4-HYDROXYPHENYL)BUTANOATE)
    • ETHYLENE GLYCOL BIS(.BETA.,.BETA.-BIS(3-TERT-BUTYL-4-HYDROXYPHENYL)BUTYRATE)
    • BENZENEPROPANOIC ACID, 3-(1,1-DIMETHYLETHYL)-.BETA.-(3-(1,1-DIMETHYLETHYL)-4-HYDROXYPHENYL)-4-HYDROXY-.BETA.-METHYL-, 1,1'-(1,2-ETHANEDIYL) ESTER
    • BENZENEPROPANOIC ACID, 3-(1,1-DIMETHYLETHYL)-.BETA.-(3-(1,1-DIMETHYLETHYL)-4-HYDROXYPHENYL)-4-HYDROXY-.BETA.-METHYL-, 1,2-ETHANEDIYL ESTER
    • Benzenepropanoic acid, 3-(1,1-dimethylethyl)-.beta.-[3-(1,1-dimethylethyl)-4-hydroxyphenyl]-4-hydroxy-.beta.-methyl-, 1,1'-(1,2-ethanediyl) ester
    • RefChem:571892
    • BUTYRIC ACID, 3,3-BIS(3-TERT-BUTYL-4-HYDROXYPHENYL)ETHYLENE ESTER
    • ETHYLENE GLYCOL BIS(BETA,BETA-BIS(3-TERT-BUTYL-4-HYDROXYPHENYL)BUTYRATE)
    • Benzenepropanoic acid, 3-(1,1-dimethylethyl)-.beta.-3-(1,1-dimethylethyl)-4-hydroxyphenyl-4-hydroxy-.beta.-methyl-, 1,2-ethanediyl ester
    • Benzenepropanoic acid, 3-(1,1-dimethylethyl)-beta-3-(1,1-dimethylethyl)-4-hydroxyphenyl-4-hydroxy-beta-methyl-, 1,2-ethanediyl ester
    • 251-073-2
    • 32509-66-3
    • Hostanox 03
    • 2-[3,3-bis(3-tert-butyl-4-hydroxyphenyl)butanoyloxy]ethyl 3,3-bis(3-tert-butyl-4-hydroxyphenyl)butanoate
    • BUTYRIC ACID, 3,3-BIS(3-TERT-BUTYL-4- HYDROXYPHENYL)ETHYLENE ESTER
    • 3-((3,3-Bis(3-(tert-butyl)-4-hydroxyphenyl)butanoyl)oxy)propyl 3-(4-(tert-butyl)-3-hydroxyphenyl)-3-(3-(tert-butyl)-4-hydroxyphenyl)butanoate
    • UNII-2IRE6XVP1D
    • Ethylene Bis[3,3-bis[3-tert-butyl-4-hydroxyphenyl]butanoate]
    • Hostanox O 3
    • C50H66O8
    • Plastic additive 08 CRS
    • SCHEMBL39426
    • DTXSID9052006
    • SCHEMBL29356231
    • SCHEMBL29384725
    • MSK001881
    • FB59782
    • MSK001881-100M
    • Plastic additive 1 Solution in Methanol, 100ug/mL
    • Q27254797
    • ethylene bis[3,3-bis(3-t-butyl-4-hydroxyphenyl)butyrate)
    • 3,3-bis(3-tert-butyl-4- hydroxyphenyl)ethylene esterbutyric acid
    • Plastic additive 08, European Pharmacopoeia (EP) Reference Standard
    • Ethane-1,2-Diyl Bis(3,3-Bis(3-(Tert-Butyl)-4-Hydroxyphenyl)Butanoate)
    • ethane-1,2-diyl bis[3,3-bis(3-tert-butyl-4-hydroxyphenyl)butanoate]
    • ethylene bis(3,3-bis(3(1,1-dimethylethyl)-4-hydroxy-phenyl) butanoate)
    • ethylene bis(3,3-bis(3(1,1-dimethylethyl)-4-hydroxy-phenyl)butanoate)
    • Ethylene Bis[3,3-bis[3-(1,1-dimethylethyl)-4-hydroxyphenyl]butanoate]
    • Plastic additive 1, United States Pharmacopeia (USP) Reference Standard
    • 2-[3,3-bis(3-tert-butyl-4-hydroxy-phenyl)butanoyloxy]ethyl 3,3-bis(3-tert-butyl-4-hydroxy-phenyl)butanoate
    • BENZENEPROPANOIC ACID, 3-(1,1-DIMETHYLETHYL)-.BETA.-(3-(1,1- DIMETHYLETHYL)-4-HYDROXYPHENYL)-4-HYDROXY-.BETA.-METHYL-, 1,2- ETHANEDIYL ESTER
    • Ethylene glycol bis[3,3-bis(3 inverted exclamation marka-tert-butyl-4 inverted exclamation marka-hydroxyphenyl)butyrate]
    • 32509-66-3

  • Applications

    Butyric acid, 3,3-bis(3-tert-butyl-4-hydroxyphenyl)ethylene ester (CAS 32509-66-3) is primarily used as a hindered phenolic antioxidant and processing stabilizer in polymers and related formulations. It is commonly evaluated for improving thermal-oxidative stability in plastics such as polyolefins and polyesters, during molding and extrusion, and to reduce aging in coatings and inks. The compound can serve as a stabilizer in rubber and elastomer compounds, and is also employed in lubricant and hydraulic fluid formulations to inhibit oxidation and prolong service life. In adhesive systems and composite formulations, it can act as a stabilizer to mitigate degradation during processing and use. Overall, its role is to scavenge radicals and slow down deterioration of organic matrices, subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 8.6
    methanol 11.04
    isopropanol 3.33
    water 0.01
    ethyl acetate 4.07
    n-propanol 7.48
    acetone 13.91
    n-butanol 3.43
    acetonitrile 3.27
    DMF 77.93
    toluene 2.41
    isobutanol 3.18
    1,4-dioxane 15.4
    methyl acetate 5.66
    THF 86.7
    2-butanone 11.62
    n-pentanol 4.99
    sec-butanol 3.38
    n-hexane 0.18
    ethylene glycol 1.74
    NMP 80.39
    cyclohexane 0.09
    DMSO 68.82
    n-butyl acetate 4.61
    n-octanol 1.95
    chloroform 25.83
    n-propyl acetate 5.64
    acetic acid 15.2
    dichloromethane 21.79
    cyclohexanone 13.43
    propylene glycol 5.68
    isopropyl acetate 2.62
    DMAc 67.61
    2-ethoxyethanol 20.09
    isopentanol 1.9
    n-heptane 0.15
    ethyl formate 6.6
    1,2-dichloroethane 9.59
    n-hexanol 2.6
    2-methoxyethanol 29.4
    isobutyl acetate 3.47
    tetrachloromethane 1.42
    n-pentyl acetate 5.48
    transcutol 24.63
    n-heptanol 2.55
    ethylbenzene 1.43
    MIBK 3.24
    2-propoxyethanol 23.41
    tert-butanol 2.81
    MTBE 2.62
    2-butoxyethanol 13.3
    propionic acid 6.82
    o-xylene 0.99
    formic acid 8.57
    diethyl ether 3.03
    m-xylene 1.23
    p-xylene 1.82
    chlorobenzene 4.42
    dimethyl carbonate 6.18
    n-octane 0.08
    formamide 12.95
    cyclopentanone 43.66
    2-pentanone 6.67
    anisole 6.26
    cyclopentyl methyl ether 8.79
    gamma-butyrolactone 50.0
    1-methoxy-2-propanol 23.46
    pyridine 20.2
    3-pentanone 4.68
    furfural 37.68
    n-dodecane 0.05
    diethylene glycol 11.07
    diisopropyl ether 0.46
    tert-amyl alcohol 3.08
    acetylacetone 10.62
    n-hexadecane 0.05
    acetophenone 8.07
    methyl propionate 7.33
    isopentyl acetate 3.61
    trichloroethylene 28.23
    n-nonanol 2.1
    cyclohexanol 1.65
    benzyl alcohol 6.85
    2-ethylhexanol 1.45
    isooctanol 1.92
    dipropyl ether 3.59
    1,2-dichlorobenzene 3.93
    ethyl lactate 5.21
    propylene carbonate 13.0
    n-methylformamide 25.23
    2-pentanol 1.48
    n-pentane 0.1
    1-propoxy-2-propanol 15.34
    1-methoxy-2-propyl acetate 9.13
    2-(2-methoxypropoxy) propanol 9.08
    mesitylene 0.5
    ε-caprolactone 14.23
    p-cymene 0.76
    epichlorohydrin 52.79
    1,1,1-trichloroethane 5.3
    2-aminoethanol 6.69
    morpholine-4-carbaldehyde 53.7
    sulfolane 74.71
    2,2,4-trimethylpentane 0.07
    2-methyltetrahydrofuran 15.8
    n-hexyl acetate 5.02
    isooctane 0.04
    2-(2-butoxyethoxy)ethanol 12.35
    sec-butyl acetate 2.84
    tert-butyl acetate 3.77
    decalin 0.1
    glycerin 8.89
    diglyme 23.13
    acrylic acid 8.71
    isopropyl myristate 1.42
    n-butyric acid 6.49
    acetyl acetate 2.82
    di(2-ethylhexyl) phthalate 2.55
    ethyl propionate 4.46
    nitromethane 29.98
    1,2-diethoxyethane 7.07
    benzonitrile 4.67
    trioctyl phosphate 1.77
    1-bromopropane 3.72
    gamma-valerolactone 74.32
    n-decanol 1.23
    triethyl phosphate 2.4
    4-methyl-2-pentanol 0.82
    propionitrile 3.86
    vinylene carbonate 12.55
    1,1,2-trichlorotrifluoroethane 39.52
    DMS 4.82
    cumene 0.88
    2-octanol 1.44
    2-hexanone 8.19
    octyl acetate 2.33
    limonene 0.92
    1,2-dimethoxyethane 28.13
    ethyl orthosilicate 2.45
    tributyl phosphate 1.87
    diacetone alcohol 7.86
    N,N-dimethylaniline 5.07
    acrylonitrile 7.04
    aniline 4.11
    1,3-propanediol 6.73
    bromobenzene 3.85
    dibromomethane 10.9
    1,1,2,2-tetrachloroethane 20.85
    2-methyl-cyclohexyl acetate 4.05
    tetrabutyl urea 3.6
    diisobutyl methanol 0.66
    2-phenylethanol 5.41
    styrene 1.76
    dioctyl adipate 3.36
    dimethyl sulfate 16.63
    ethyl butyrate 3.95
    methyl lactate 8.7
    butyl lactate 6.67
    diethyl carbonate 2.23
    propanediol butyl ether 12.15
    triethyl orthoformate 4.08
    p-tert-butyltoluene 0.8
    methyl 4-tert-butylbenzoate 7.92
    morpholine 26.89
    tert-butylamine 0.92
    n-dodecanol 0.7
    dimethoxymethane 32.44
    ethylene carbonate 7.82
    cyrene 19.59
    2-ethoxyethyl acetate 9.93
    2-ethylhexyl acetate 2.93
    1,2,4-trichlorobenzene 5.85
    4-methylpyridine 11.85
    dibutyl ether 1.9
    2,6-dimethyl-4-heptanol 0.66
    DEF 11.02
    dimethyl isosorbide 24.69
    tetrachloroethylene 9.79
    eugenol 9.33
    triacetin 6.78
    span 80 8.08
    1,4-butanediol 3.62
    1,1-dichloroethane 6.18
    2-methyl-1-pentanol 2.96
    methyl formate 18.9
    2-methyl-1-butanol 2.47
    n-decane 0.12
    butyronitrile 3.39
    3,7-dimethyl-1-octanol 1.33
    1-chlorooctane 0.83
    1-chlorotetradecane 0.23
    n-nonane 0.1
    undecane 0.07
    tert-butylcyclohexane 0.11
    cyclooctane 0.04
    cyclopentanol 5.45
    tetrahydropyran 8.58
    tert-amyl methyl ether 2.71
    2,5,8-trioxanonane 13.1
    1-hexene 1.1
    2-isopropoxyethanol 10.31
    2,2,2-trifluoroethanol 4.39
    methyl butyrate 6.9

    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