Tris(2,4-di-tert-butylphenyl) phosphite

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  • Identifiers

    CAS number
    31570-04-4

    Molecular formula
    C42H63O3P

    SMILES
    CC(C)(C)C1=CC(=C(C=C1)OP(OC2=C(C=C(C=C2)C(C)(C)C)C(C)(C)C)OC3=C(C=C(C=C3)C(C)(C)C)C(C)(C)C)C(C)(C)C

    Safety labels

  • Odor profile

    Fragrance
    Woody 53.71%
    Green 36.7%
    Dry 36.46%
    Vetiver 34.74%
    Amber 31.1%
    Leathery 30.19%
    Musk 29.26%
    Floral 28.9%
    Phenolic 28.35%
    Fruity 27.96%

     

    Flavor
    Camphor 35.38%
    Musty 29.09%
    Mild 28.38%
    Phenolic 26.95%
    Bitter 22.31%
    Woody 21.98%
    Green pepper 20.53%
    Creosote 20.41%
    Carrot 20.15%
    Thymol 20.14%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    15.5

    pKa est.
    4.26 (weak acid)

    Molecular weight
    646.9 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    578°C

    Flash point

    • 207.03 ˚C est.

  • Synonyms

    • Tris(2,4-di-tert-butylphenyl) phosphite
    • 31570-04-4
    • Tris(2,4-ditert-butylphenyl) phosphite
    • Tris(2,4-di-tert-Butylphenyl)phosphite
    • IRGAFOS-168
    • 834E5H0LFF
    • DOVERPHOS S 480
    • EVERFOS 168
    • tris-(2,4-di-tert-butylphenyl) phosphite
    • DTXSID2027969
    • JP-650
    • 250-709-6
    • RefChem:900160
    • DTXCID907969
    • Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1)
    • Irgafos 168
    • Antioxidant 168
    • Tris(2,4-di-t-butylphenyl)phosphite
    • C42H63O3P
    • MFCD00072706
    • Tris(2,4-ditert-butylphenyl)phosphite
    • TRIS(2,4-TERT-BUTYLPHENYL) PHOSPHITE
    • Phenol, 2,4-di-tert-butyl-, phosphite (3:1)
    • Phenol, 2,4-bis(1,1-dimethylethyl)-, 1,1',1''-phosphite
    • AS 2112; AT 168; Alkanox 240; Alkanox P 240; Antioxidant 168
    • Tris-(2.4-di-t-butylphenyl)-phosphite
    • Phosphorous Acid Tris(2,4-di-tert-butylphenyl) Ester
    • EINECS 250-709-6
    • UNII-834E5H0LFF
    • Hostanox PAR 24
    • Alkanox 240
    • Lowinox 242
    • Naugard 524
    • Tris-(2,4-di-tert-butylphenyl)phosphite
    • PHOSPHITE 168
    • Plastic additive 12 CRS
    • PLASTIC ADDITIVE 5
    • EC 250-709-6
    • SCHEMBL26607
    • SCHEMBL28850884
    • SCHEMBL29349873
    • MSK3115
    • CHEBI:144343
    • PLASTIC ADDITIVE 5 [USP-RS]
    • Tris(2,4-di-tert-butylphenyl)phosphite 100 microg/mL in Acetonitrile
    • tris(2,4-ditertbutylphenyl)phosphite
    • AKOS001482440
    • Tris(2,4-di-t-butylphenyl) phosphite
    • tris(2,4-di-tert butylphenyl)phosphite
    • tris(2,4-Di-tert.butylphenyl)phosphite
    • tris-(2,4-di-t-butylphenyl) phosphite
    • AC-15273
    • AS-12273
    • BP-12274
    • tris (2,4-di-tert-butyl-phenyl)phosphite
    • tris (2,4-di-tert-butylphenyl) phosphite
    • CS-0035260
    • NS00003587
    • P1421
    • D70443
    • Tris(2,4-di-tert-butylphenyl) phosphite, 98%
    • 014T437
    • F601668
    • SR-01000391442
    • SR-01000391442-1
    • Q27269395
    • 2,4-BIS(1,1-DIMETHYLETHYL)PHENOL PHOSPHITE (3:1)
    • Plastic additive 12, European Pharmacopoeia (EP) Reference Standard
    • Plastic additive 5, United States Pharmacopeia (USP) Reference Standard
    • 31570-04-4

  • Applications

    Tris(2,4-di-tert-butylphenyl) phosphite is a phosphite-based processing stabilizer and antioxidant widely used in polymer formulations to scavenge hydroperoxides and suppress thermo-oxidative degradation during melt processing and in service. It is commonly employed in plastics such as polyolefins (PE, PP), polyvinyl chloride, and polyesters to improve process stability, color retention, and gloss. It is also used in coatings and inks as a thermal-oxidative stabilizer, in adhesive formulations to enhance processing stability, and in lubricants and lubricant-containing systems as an antioxidant additive. Additionally, it is sometimes evaluated for elastomer/rubber compounding to improve aging resistance.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 11.41
    methanol 4.34
    isopropanol 14.68
    water 0.09
    ethyl acetate 52.42
    n-propanol 19.27
    acetone 64.26
    n-butanol 18.33
    acetonitrile 18.03
    DMF 120.72
    toluene 53.66
    isobutanol 19.16
    1,4-dioxane 65.88
    methyl acetate 49.62
    THF 252.47
    2-butanone 73.2
    n-pentanol 24.92
    sec-butanol 22.79
    n-hexane 5.42
    ethylene glycol 2.28
    NMP 331.3
    cyclohexane 4.8
    DMSO 68.74
    n-butyl acetate 70.62
    n-octanol 23.32
    chloroform 322.87
    n-propyl acetate 64.32
    acetic acid 38.7
    dichloromethane 219.04
    cyclohexanone 121.81
    propylene glycol 10.24
    isopropyl acetate 51.43
    DMAc 182.79
    2-ethoxyethanol 38.31
    isopentanol 19.31
    n-heptane 6.29
    ethyl formate 34.12
    1,2-dichloroethane 91.33
    n-hexanol 24.4
    2-methoxyethanol 31.98
    isobutyl acetate 59.18
    tetrachloromethane 35.51
    n-pentyl acetate 83.5
    transcutol 91.14
    n-heptanol 26.05
    ethylbenzene 31.5
    MIBK 50.2
    2-propoxyethanol 62.46
    tert-butanol 24.62
    MTBE 38.78
    2-butoxyethanol 60.17
    propionic acid 34.46
    o-xylene 31.5
    formic acid 8.01
    diethyl ether 26.41
    m-xylene 39.84
    p-xylene 50.4
    chlorobenzene 96.72
    dimethyl carbonate 49.14
    n-octane 3.18
    formamide 15.39
    cyclopentanone 235.34
    2-pentanone 66.06
    anisole 63.82
    cyclopentyl methyl ether 103.49
    gamma-butyrolactone 267.08
    1-methoxy-2-propanol 52.74
    pyridine 122.75
    3-pentanone 57.26
    furfural 178.93
    n-dodecane 2.04
    diethylene glycol 19.41
    diisopropyl ether 14.37
    tert-amyl alcohol 30.73
    acetylacetone 96.18
    n-hexadecane 2.41
    acetophenone 84.56
    methyl propionate 64.01
    isopentyl acetate 66.3
    trichloroethylene 324.44
    n-nonanol 25.33
    cyclohexanol 27.9
    benzyl alcohol 47.34
    2-ethylhexanol 25.39
    isooctanol 25.7
    dipropyl ether 42.84
    1,2-dichlorobenzene 99.19
    ethyl lactate 39.59
    propylene carbonate 141.92
    n-methylformamide 37.62
    2-pentanol 19.4
    n-pentane 3.77
    1-propoxy-2-propanol 68.86
    1-methoxy-2-propyl acetate 93.99
    2-(2-methoxypropoxy) propanol 59.89
    mesitylene 22.13
    ε-caprolactone 136.45
    p-cymene 26.38
    epichlorohydrin 247.33
    1,1,1-trichloroethane 150.6
    2-aminoethanol 8.57
    morpholine-4-carbaldehyde 170.51
    sulfolane 325.05
    2,2,4-trimethylpentane 3.97
    2-methyltetrahydrofuran 134.09
    n-hexyl acetate 77.02
    isooctane 2.71
    2-(2-butoxyethoxy)ethanol 65.39
    sec-butyl acetate 52.09
    tert-butyl acetate 70.95
    decalin 5.41
    glycerin 13.14
    diglyme 109.53
    acrylic acid 36.05
    isopropyl myristate 30.09
    n-butyric acid 49.54
    acetyl acetate 45.5
    di(2-ethylhexyl) phthalate 41.13
    ethyl propionate 55.97
    nitromethane 81.41
    1,2-diethoxyethane 52.98
    benzonitrile 54.44
    trioctyl phosphate 27.22
    1-bromopropane 55.59
    gamma-valerolactone 257.87
    n-decanol 17.38
    triethyl phosphate 36.8
    4-methyl-2-pentanol 16.5
    propionitrile 24.87
    vinylene carbonate 116.22
    1,1,2-trichlorotrifluoroethane 161.85
    DMS 69.45
    cumene 24.31
    2-octanol 22.89
    2-hexanone 72.86
    octyl acetate 40.17
    limonene 29.43
    1,2-dimethoxyethane 72.34
    ethyl orthosilicate 37.3
    tributyl phosphate 31.26
    diacetone alcohol 69.3
    N,N-dimethylaniline 59.39
    acrylonitrile 32.51
    aniline 47.84
    1,3-propanediol 12.11
    bromobenzene 120.92
    dibromomethane 126.18
    1,1,2,2-tetrachloroethane 241.25
    2-methyl-cyclohexyl acetate 68.96
    tetrabutyl urea 48.69
    diisobutyl methanol 16.69
    2-phenylethanol 51.47
    styrene 35.92
    dioctyl adipate 52.59
    dimethyl sulfate 114.15
    ethyl butyrate 59.04
    methyl lactate 44.33
    butyl lactate 69.98
    diethyl carbonate 36.85
    propanediol butyl ether 55.03
    triethyl orthoformate 55.6
    p-tert-butyltoluene 27.69
    methyl 4-tert-butylbenzoate 96.81
    morpholine 88.59
    tert-butylamine 15.36
    n-dodecanol 11.9
    dimethoxymethane 70.52
    ethylene carbonate 81.17
    cyrene 104.41
    2-ethoxyethyl acetate 97.23
    2-ethylhexyl acetate 62.6
    1,2,4-trichlorobenzene 144.93
    4-methylpyridine 117.73
    dibutyl ether 31.24
    2,6-dimethyl-4-heptanol 16.69
    DEF 74.41
    dimethyl isosorbide 160.75
    tetrachloroethylene 110.98
    eugenol 81.55
    triacetin 89.92
    span 80 65.59
    1,4-butanediol 8.67
    1,1-dichloroethane 108.57
    2-methyl-1-pentanol 26.45
    methyl formate 36.01
    2-methyl-1-butanol 22.14
    n-decane 4.23
    butyronitrile 27.16
    3,7-dimethyl-1-octanol 21.74
    1-chlorooctane 22.0
    1-chlorotetradecane 7.53
    n-nonane 3.93
    undecane 2.8
    tert-butylcyclohexane 6.27
    cyclooctane 2.68
    cyclopentanol 48.02
    tetrahydropyran 73.22
    tert-amyl methyl ether 42.24
    2,5,8-trioxanonane 73.69
    1-hexene 19.9
    2-isopropoxyethanol 39.82
    2,2,2-trifluoroethanol 23.81
    methyl butyrate 70.71

    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