Tetrakis(2,4-di-tert-butylphenyl) (1,1-biphenyl)-4,4'-diylbisphosphonite

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  • Identifiers

    CAS number
    38613-77-3

    Molecular formula
    C68H92O4P2

    SMILES
    CC(C)(C)C1=CC(=C(C=C1)OP(C2=CC=C(C=C2)C3=CC=C(C=C3)P(OC4=C(C=C(C=C4)C(C)(C)C)C(C)(C)C)OC5=C(C=C(C=C5)C(C)(C)C)C(C)(C)C)OC6=C(C=C(C=C6)C(C)(C)C)C(C)(C)C)C(C)(C)C

    Safety labels

    Irritant
    Irritant

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Woody 45.04%
    Fruity 39.22%
    Floral 39.05%
    Musk 33.67%
    Dry 33.63%
    Green 33.12%
    Vetiver 32.27%
    Amber 30.74%
    Leathery 29.87%
    Rose 28.83%

     

    Flavor
    Bitter 34.47%
    Camphor 31.24%
    Mild 25.06%
    Musty 23.81%
    Phenolic 22.68%
    Green pepper 20.31%
    Creosote 20.07%
    Woody 20.03%
    Thymol 19.95%
    Carrot 19.92%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    23.5

    pKa est.
    3.59 (weak acid)

    Molecular weight
    1035.4 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    932°C

    Flash point

    • 272.56 ˚C est.

  • Synonyms

    • Phosphonous acid, (1,1'-biphenyl)-4,4'-diylbis-, tetrakis(2,4-bis(1,1-dimethylethyl)phenyl) ester
    • Tetrakis(2,4-di-tert-butylphenyl) (1,1-biphenyl)-4,4'-diylbisphosphonite
    • tetrakis(2,4-di-tert-butylphenyl) [1,1-biphenyl]-4,4'-diylbisphosphonite
    • Phosphonous acid, [1,1'-biphenyl]-4,4'-diylbis-, tetrakis[2,4-bis(1,1-dimethylethyl)phenyl] ester
    • Phosphonous acid, P,P'-((1,1'-biphenyl)-4,4'-diyl)bis-, P,P,P',P'-tetrakis(2,4-bis(1,1-dimethylethyl)phenyl) ester
    • Phosphonous acid, P,P'-[[1,1'-biphenyl]-4,4'-diyl]bis-, P,P,P',P'-tetrakis[2,4-bis(1,1-dimethylethyl)phenyl] ester
    • RefChem:897227
    • 254-037-4
    • 38613-77-3
    • Tetrakis(2,4-di-tert-butylphenyl) [1,1'-biphenyl]-4,4'-diylbis(phosphonite)
    • IRGAFOS P-EPQ
    • Irgafos PEPQ
    • 153453-64-6
    • [4-[4-bis(2,4-ditert-butylphenoxy)phosphanylphenyl]phenyl]-bis(2,4-ditert-butylphenoxy)phosphane
    • MFCD00799590
    • tetrakis(2,4-di-tert-butylphenyl)[1,1'-biphenyl]-4,4'-diylbisphosphonite
    • Tetrakis(2,4-di-tert-butylphenyl)-1,1-biphenyl-4,4'-diylbisphosphonite
    • Sandostab P-EPQ
    • Sandostab PEPQ
    • Irgaphos P-EPO
    • Sanduvor P-EPQ
    • Irganox P-EPQ
    • Irgafos P-EPQFF
    • PEPQ
    • Phos 2
    • 4,4'-Biphenylenediphosphonous acid tetrakis(2,4-di-tert-butylphenyl) ester
    • Tetrakis(2,4-di-tert-butylphenyl)-[1,1'-biphenyl]-4,4'-diylbis(phosphonite)
    • Tetrakis(2,4-di-tert-butylphenyl)[1,1'-biphenyl]-4,4'-diylbisphosphonite (Technical Grade)
    • THP-EPQ
    • C68H92O4P2
    • EINECS 254-037-4
    • SCHEMBL205802
    • SCHEMBL29355846
    • DTXSID10894018
    • AKOS015895751
    • CS-W019046
    • DS-2870
    • bis(2,4-di-tert-butylphenyl) {4'-[bis(2,4-di-tert-butylphenoxy)phosphanyl]-[1,1'-biphenyl]-4-yl}phosphonite
    • FT142226
    • NS00005674
    • 613I773
    • TETRAKIS (2,4-DI-TERT-BUTYLPHENYL) 4,4'-BIPHENYLENEDIPHOSPHONIT
    • tetrakis(2,4-di-tert-butylphenyl) [1,1-biphenyl]-4,4\'-diylbisphosphonite
    • Tetrakis(2,4-di-tert-butylphenyl)[1,1'-biphenyl]-4,4'-diylbis(phosphonite)
    • Tetrakis[2,4-bis(2-methyl-2-propanyl)phenyl] 4,4\'-biphenyldiylbis (phosphonite)
    • 38613-77-3

  • Applications

    Tetrakis(2,4-di-tert-butylphenyl) (1,1-biphenyl)-4,4'-diylbisphosphonite (CAS 38613-77-3) is typically used as a stabilizer and antioxidant in polymer formulations, particularly for polyolefins and PVC, to improve thermal stability during processing and in service; it is commonly evaluated as a processing stabilizer or secondary antioxidant in extrusion and molding; in coatings and inks it serves as a stabilizing additive to enhance durability against heat and light; in adhesive formulations it functions as a stabilizer/antioxidant component to extend bondline longevity; and it may be considered for electronics-related polymer components and specialty resin systems requiring high thermal stability and resistance to oxidative degradation.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 3.47
    methanol 1.4
    isopropanol 4.07
    water 0.03
    ethyl acetate 19.37
    n-propanol 6.72
    acetone 20.03
    n-butanol 6.46
    acetonitrile 6.09
    DMF 39.31
    toluene 24.18
    isobutanol 6.51
    1,4-dioxane 20.99
    methyl acetate 18.2
    THF 105.42
    2-butanone 28.47
    n-pentanol 9.2
    sec-butanol 7.76
    n-hexane 1.52
    ethylene glycol 0.8
    NMP 134.08
    cyclohexane 1.35
    DMSO 25.61
    n-butyl acetate 27.97
    n-octanol 7.78
    chloroform 169.93
    n-propyl acetate 26.67
    acetic acid 15.89
    dichloromethane 104.68
    cyclohexanone 49.98
    propylene glycol 3.81
    isopropyl acetate 18.79
    DMAc 66.05
    2-ethoxyethanol 15.48
    isopentanol 6.69
    n-heptane 2.11
    ethyl formate 13.04
    1,2-dichloroethane 36.05
    n-hexanol 8.32
    2-methoxyethanol 11.92
    isobutyl acetate 24.16
    tetrachloromethane 12.72
    n-pentyl acetate 34.14
    transcutol 38.13
    n-heptanol 9.32
    ethylbenzene 13.48
    MIBK 19.48
    2-propoxyethanol 25.2
    tert-butanol 7.57
    MTBE 12.95
    2-butoxyethanol 25.67
    propionic acid 14.11
    o-xylene 13.0
    formic acid 3.47
    diethyl ether 8.42
    m-xylene 17.23
    p-xylene 19.7
    chlorobenzene 42.58
    dimethyl carbonate 19.03
    n-octane 0.97
    formamide 6.18
    cyclopentanone 104.42
    2-pentanone 25.54
    anisole 27.7
    cyclopentyl methyl ether 39.77
    gamma-butyrolactone 112.49
    1-methoxy-2-propanol 20.32
    pyridine 51.42
    3-pentanone 21.32
    furfural 87.36
    n-dodecane 0.66
    diethylene glycol 6.85
    diisopropyl ether 4.28
    tert-amyl alcohol 11.03
    acetylacetone 38.71
    n-hexadecane 0.77
    acetophenone 39.43
    methyl propionate 24.57
    isopentyl acetate 26.49
    trichloroethylene 158.47
    n-nonanol 8.69
    cyclohexanol 9.27
    benzyl alcohol 22.09
    2-ethylhexanol 9.35
    isooctanol 9.18
    dipropyl ether 17.17
    1,2-dichlorobenzene 45.21
    ethyl lactate 17.72
    propylene carbonate 61.13
    n-methylformamide 13.54
    2-pentanol 6.59
    n-pentane 1.04
    1-propoxy-2-propanol 30.69
    1-methoxy-2-propyl acetate 42.17
    2-(2-methoxypropoxy) propanol 26.79
    mesitylene 8.58
    ε-caprolactone 56.85
    p-cymene 11.07
    epichlorohydrin 109.47
    1,1,1-trichloroethane 61.4
    2-aminoethanol 3.1
    morpholine-4-carbaldehyde 67.0
    sulfolane 151.65
    2,2,4-trimethylpentane 1.27
    2-methyltetrahydrofuran 50.71
    n-hexyl acetate 29.92
    isooctane 0.78
    2-(2-butoxyethoxy)ethanol 27.39
    sec-butyl acetate 21.83
    tert-butyl acetate 26.97
    decalin 1.76
    glycerin 5.33
    diglyme 46.38
    acrylic acid 16.04
    isopropyl myristate 11.12
    n-butyric acid 20.38
    acetyl acetate 17.69
    di(2-ethylhexyl) phthalate 16.24
    ethyl propionate 23.08
    nitromethane 32.28
    1,2-diethoxyethane 21.12
    benzonitrile 24.41
    trioctyl phosphate 10.56
    1-bromopropane 21.5
    gamma-valerolactone 120.78
    n-decanol 5.59
    triethyl phosphate 16.31
    4-methyl-2-pentanol 5.72
    propionitrile 9.23
    vinylene carbonate 54.07
    1,1,2-trichlorotrifluoroethane 86.41
    DMS 25.89
    cumene 9.72
    2-octanol 7.67
    2-hexanone 29.9
    octyl acetate 14.43
    limonene 12.16
    1,2-dimethoxyethane 27.25
    ethyl orthosilicate 17.02
    tributyl phosphate 12.82
    diacetone alcohol 28.56
    N,N-dimethylaniline 23.96
    acrylonitrile 13.18
    aniline 21.22
    1,3-propanediol 4.21
    bromobenzene 53.27
    dibromomethane 58.53
    1,1,2,2-tetrachloroethane 109.75
    2-methyl-cyclohexyl acetate 30.0
    tetrabutyl urea 18.5
    diisobutyl methanol 6.54
    2-phenylethanol 22.56
    styrene 15.36
    dioctyl adipate 20.67
    dimethyl sulfate 47.36
    ethyl butyrate 26.02
    methyl lactate 19.43
    butyl lactate 32.79
    diethyl carbonate 15.24
    propanediol butyl ether 23.54
    triethyl orthoformate 25.77
    p-tert-butyltoluene 12.04
    methyl 4-tert-butylbenzoate 42.68
    morpholine 30.4
    tert-butylamine 4.56
    n-dodecanol 3.76
    dimethoxymethane 25.66
    ethylene carbonate 34.48
    cyrene 50.38
    2-ethoxyethyl acetate 41.45
    2-ethylhexyl acetate 25.51
    1,2,4-trichlorobenzene 70.38
    4-methylpyridine 51.66
    dibutyl ether 11.47
    2,6-dimethyl-4-heptanol 6.54
    DEF 27.93
    dimethyl isosorbide 76.03
    tetrachloroethylene 47.14
    eugenol 37.66
    triacetin 38.83
    span 80 28.85
    1,4-butanediol 3.01
    1,1-dichloroethane 41.53
    2-methyl-1-pentanol 10.0
    methyl formate 14.45
    2-methyl-1-butanol 8.09
    n-decane 1.4
    butyronitrile 9.84
    3,7-dimethyl-1-octanol 7.95
    1-chlorooctane 7.6
    1-chlorotetradecane 2.45
    n-nonane 1.23
    undecane 0.91
    tert-butylcyclohexane 2.11
    cyclooctane 0.79
    cyclopentanol 17.11
    tetrahydropyran 26.3
    tert-amyl methyl ether 14.86
    2,5,8-trioxanonane 31.17
    1-hexene 6.4
    2-isopropoxyethanol 16.15
    2,2,2-trifluoroethanol 9.89
    methyl butyrate 29.74

    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