2,4,8,10-Tetra-tert-butyl-6-(3-(3-methyl-4-hydroxy-5-tert-butylphenyl)propoxy)dibenzo(d,f)(1,3,2)dioxaphosphepin

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  • Identifiers

    CAS number
    203255-81-6

    Molecular formula
    C42H61O4P

    SMILES
    CC1=CC(=CC(=C1O)C(C)(C)C)CCCOP2OC3=C(C=C(C=C3C(C)(C)C)C(C)(C)C)C4=C(O2)C(=CC(=C4)C(C)(C)C)C(C)(C)C

    Safety labels

  • Odor profile

    Fragrance
    Woody 49.23%
    Musk 42.04%
    Dry 38.05%
    Leathery 37.24%
    Amber 34.65%
    Vetiver 34.04%
    Animal 32.33%
    Phenolic 30.26%
    Fruity 29.53%
    Fatty 28.3%

     

    Flavor
    Camphor 34.08%
    Musty 31.47%
    Phenolic 29.62%
    Bitter 27.06%
    Mild 26.97%
    Woody 24.08%
    Earth 22.43%
    Green pepper 21.74%
    Spice 21.5%
    Creosote 21.19%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    14.1

    pKa est.
    6.68 (neutral)

    Molecular weight
    660.9 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Slow

    Boiling point est.
    1255°C

    Flash point

    • 236.72 ˚C est.

  • Synonyms

    • Sumilizer GP
    • UNII-QE2WRB24EO
    • QE2WRB24EO
    • 2,4,8,10-Tetra-tert-butyl-6-(3-(3-methyl-4-hydroxy-5-tert-butylphenyl)propoxy)dibenzo(d,f)(1,3,2)dioxaphosphepin
    • Phenol, 2-(1,1-dimethylethyl)-6-methyl-4-[3-[[2,4,8,10-tetrakis(1,1-dimethylethyl)dibenzo[d,f][1,3,2]dioxaphosphepin-6-yl]oxy]propyl]-
    • Phenol, 2-(1,1-dimethylethyl)-6-methyl-4-(3-((2,4,8,10-tetrakis(1,1-dimethylethyl)dibenzo(d,f)(1,3,2)dioxaphosphepin-6-yl)oxy)propyl)-
    • DTXSID60870221
    • 6-(3-(3-METHYL-4-HYDROXY-5-TERT-BUTYLPHENYL)PROPOXY)-2,4,8,10-TETRA-TERT-BUTYLDIBENZO(D,F)(1,3,2)DIOXAPHOSPHEPIN
    • 6-(3-(3-TERT-BUTYL-4-HYDROXY-5-METHYLPHENYL)PROPOXY)-2,4,8,10-TETRAKIS(TERT-BUTYL)DIBENZO(D,F)(1,3,2)DIOXAPHOSPHEPIN
    • DIMETHYLETHYL)-6-METHYL-4-(3-((2,4,8,10-TETRAKIS(1,1-DIMETHYLETHYL)DIBENZO(D,F)(1,3,2)DIOXAPHOSPHEPIN-6-YL)OXY)PROPYL)PHENOL, 2-(1,1-
    • RefChem:197360
    • DTXCID20818003
    • 442-450-4
    • 203255-81-6
    • 2-tert-butyl-6-methyl-4-[3-(2,4,8,10-tetratert-butylbenzo[d][1,3,2]benzodioxaphosphepin-6-yl)oxypropyl]phenol
    • SCHEMBL209986
    • SCHEMBL29368978
    • MSXXDBCLAKQJQT-UHFFFAOYSA-N
    • NS00112958
    • 255S816
    • Q27287213
    • 2-(1,1-Dimethylethyl)-6-methyl-4-[3-[[2,4,8,10-tetrakis(1,1-dimethyleth yl)dibenzo[d,f][1,3,2]dioxaphosphepin-6-yl]oxy]propyl] phenol
    • 2-(1,1-dimethylethyl)-6-methyl-4-[3-[[2,4,8,10-tetrakis(1,1-dimethylethyl)dibenzo[d,f][1,3,2]dioxaphosphepin-6-yl]oxy]propyl]phenol
    • 2-(t-butyl)-6-methyl-4-(3-((2,4,8,10-tetrakis(t-butyl)dibenzo[d,f][1,3,2]dioxaphosphepin-6-yl)oxy)propyl)phenol
    • 2-tert-Butyl-6-methyl-4-{3-[(2,4,8,10-tetra-tert-butyl-6H-dibenzo[d,f][1,3,2]dioxaphosphepin-6-yl)oxy]propyl}phenol
    • 203255-81-6

  • Applications

    Chemical name: 2,4,8,10-Tetra-tert-butyl-6-(3-(3-methyl-4-hydroxy-5-tert-butylphenyl)propoxy)dibenzo(d,f)(1,3,2)dioxaphosphepin; CAS 203255-81-6. In real-world formulations, this bulky organophosphorus compound is commonly evaluated as a heat- and oxidative-stabilizing additive for polymers (notably polyolefins and PVC), as well as a potential flame-retardant additive in plastics and coatings. It can also function as an intermediate in the synthesis of other organophosphorus stabilizers and flame retardants. Additional applications may include use in coatings and inks to improve durability, and in adhesives formulations to enhance thermal stability of bonded systems. The exact use depends on local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 14.4
    methanol 6.87
    isopropanol 13.87
    water 0.08
    ethyl acetate 33.0
    n-propanol 21.6
    acetone 39.57
    n-butanol 18.76
    acetonitrile 9.15
    DMF 98.16
    toluene 41.99
    isobutanol 18.94
    1,4-dioxane 52.48
    methyl acetate 34.56
    THF 184.66
    2-butanone 56.91
    n-pentanol 24.73
    sec-butanol 22.11
    n-hexane 4.32
    ethylene glycol 2.67
    NMP 213.81
    cyclohexane 3.51
    DMSO 52.28
    n-butyl acetate 52.18
    n-octanol 18.74
    chloroform 193.43
    n-propyl acetate 43.98
    acetic acid 34.11
    dichloromethane 135.37
    cyclohexanone 90.3
    propylene glycol 9.37
    isopropyl acetate 30.44
    DMAc 136.46
    2-ethoxyethanol 36.76
    isopentanol 17.96
    n-heptane 4.38
    ethyl formate 26.12
    1,2-dichloroethane 65.47
    n-hexanol 23.23
    2-methoxyethanol 32.14
    isobutyl acetate 41.04
    tetrachloromethane 21.85
    n-pentyl acetate 66.01
    transcutol 83.42
    n-heptanol 23.74
    ethylbenzene 25.54
    MIBK 33.92
    2-propoxyethanol 61.57
    tert-butanol 16.61
    MTBE 26.53
    2-butoxyethanol 56.58
    propionic acid 30.5
    o-xylene 22.94
    formic acid 8.74
    diethyl ether 20.47
    m-xylene 27.77
    p-xylene 35.23
    chlorobenzene 61.4
    dimethyl carbonate 31.72
    n-octane 2.29
    formamide 13.75
    cyclopentanone 150.19
    2-pentanone 45.52
    anisole 44.78
    cyclopentyl methyl ether 76.86
    gamma-butyrolactone 168.24
    1-methoxy-2-propanol 42.86
    pyridine 98.55
    3-pentanone 37.82
    furfural 118.72
    n-dodecane 1.37
    diethylene glycol 20.64
    diisopropyl ether 8.91
    tert-amyl alcohol 24.84
    acetylacetone 54.07
    n-hexadecane 1.59
    acetophenone 58.46
    methyl propionate 44.67
    isopentyl acetate 49.77
    trichloroethylene 194.99
    n-nonanol 20.03
    cyclohexanol 23.82
    benzyl alcohol 41.11
    2-ethylhexanol 20.84
    isooctanol 21.18
    dipropyl ether 30.24
    1,2-dichlorobenzene 57.17
    ethyl lactate 28.97
    propylene carbonate 91.72
    n-methylformamide 33.09
    2-pentanol 17.33
    n-pentane 3.12
    1-propoxy-2-propanol 57.69
    1-methoxy-2-propyl acetate 64.41
    2-(2-methoxypropoxy) propanol 47.6
    mesitylene 13.51
    ε-caprolactone 98.18
    p-cymene 17.15
    epichlorohydrin 166.69
    1,1,1-trichloroethane 71.14
    2-aminoethanol 9.53
    morpholine-4-carbaldehyde 127.34
    sulfolane 204.05
    2,2,4-trimethylpentane 2.88
    2-methyltetrahydrofuran 97.28
    n-hexyl acetate 56.36
    isooctane 1.58
    2-(2-butoxyethoxy)ethanol 55.88
    sec-butyl acetate 34.97
    tert-butyl acetate 37.82
    decalin 3.87
    glycerin 12.77
    diglyme 84.37
    acrylic acid 31.84
    isopropyl myristate 18.87
    n-butyric acid 40.38
    acetyl acetate 24.1
    di(2-ethylhexyl) phthalate 29.28
    ethyl propionate 35.55
    nitromethane 49.17
    1,2-diethoxyethane 45.19
    benzonitrile 38.05
    trioctyl phosphate 20.07
    1-bromopropane 41.22
    gamma-valerolactone 185.35
    n-decanol 13.23
    triethyl phosphate 23.16
    4-methyl-2-pentanol 12.86
    propionitrile 16.9
    vinylene carbonate 83.68
    1,1,2-trichlorotrifluoroethane 120.78
    DMS 45.67
    cumene 17.7
    2-octanol 19.44
    2-hexanone 51.75
    octyl acetate 27.09
    limonene 21.03
    1,2-dimethoxyethane 58.0
    ethyl orthosilicate 24.72
    tributyl phosphate 22.01
    diacetone alcohol 42.8
    N,N-dimethylaniline 40.84
    acrylonitrile 22.09
    aniline 40.86
    1,3-propanediol 13.06
    bromobenzene 64.87
    dibromomethane 84.53
    1,1,2,2-tetrachloroethane 147.74
    2-methyl-cyclohexyl acetate 45.48
    tetrabutyl urea 34.98
    diisobutyl methanol 11.6
    2-phenylethanol 45.38
    styrene 27.13
    dioctyl adipate 34.02
    dimethyl sulfate 65.05
    ethyl butyrate 39.35
    methyl lactate 33.67
    butyl lactate 58.55
    diethyl carbonate 24.01
    propanediol butyl ether 46.98
    triethyl orthoformate 37.29
    p-tert-butyltoluene 17.6
    methyl 4-tert-butylbenzoate 63.38
    morpholine 75.55
    tert-butylamine 10.7
    n-dodecanol 8.78
    dimethoxymethane 56.35
    ethylene carbonate 57.76
    cyrene 74.1
    2-ethoxyethyl acetate 77.82
    2-ethylhexyl acetate 46.76
    1,2,4-trichlorobenzene 82.64
    4-methylpyridine 93.02
    dibutyl ether 21.87
    2,6-dimethyl-4-heptanol 11.6
    DEF 55.42
    dimethyl isosorbide 105.98
    tetrachloroethylene 74.66
    eugenol 61.83
    triacetin 57.11
    span 80 53.19
    1,4-butanediol 9.01
    1,1-dichloroethane 63.05
    2-methyl-1-pentanol 25.16
    methyl formate 29.43
    2-methyl-1-butanol 22.2
    n-decane 2.82
    butyronitrile 18.96
    3,7-dimethyl-1-octanol 16.74
    1-chlorooctane 14.73
    1-chlorotetradecane 4.85
    n-nonane 2.61
    undecane 1.87
    tert-butylcyclohexane 4.04
    cyclooctane 1.82
    cyclopentanol 39.49
    tetrahydropyran 59.45
    tert-amyl methyl ether 29.67
    2,5,8-trioxanonane 55.22
    1-hexene 16.77
    2-isopropoxyethanol 34.22
    2,2,2-trifluoroethanol 18.11
    methyl butyrate 49.58

    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