Tris(nonylphenyl)phosphite

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  • Identifiers

    CAS number
    3050-88-2

    Molecular formula
    C45H69O3P

    SMILES
    CCCCCCCCCC1=CC=C(C=C1)OP(OC2=CC=C(C=C2)CCCCCCCCC)OC3=CC=C(C=C3)CCCCCCCCC

    Safety labels

    Irritant
    Irritant

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Waxy 55.82%
    Floral 40.23%
    Balsamic 39.4%
    Oily 36.38%
    Fatty 33.78%
    Sweet 25.72%
    Spicy 25.04%
    Metallic 23.83%
    Animal 23.35%
    Green 22.53%

     

    Flavor
    Mild 32.68%
    Waxy 31.57%
    Bland 25.0%
    Oily 21.43%
    Slightly waxy 21.38%
    Balsam 21.16%
    Delicate 20.8%
    Fatty 20.28%
    Diterpene 20.18%
    Beer 20.07%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    19.3

    pKa est.
    10.56 (weak base)

    Molecular weight
    689.0 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Melting point expt.

    • 6 °C (pour point), OECD Guideline 102 (Melting point / Melting Range)

    Boiling point

    • >300 °C, OECD Guideline 103 (Boiling point/boiling range), has an onset of degradation at 322 °C under nitrogen

    Flash point

    • 313.06 ˚C est.
    • 207 °C (405 °F) - closed cup
    • 207 °C c.c.

    Solubility expt.

    • In water, <0.6 mg/L at 24 °C, pH 7 (OECD Guideline 105 (Water Solubility))
    • In water, <0.05 mg/L (indirect solubility method)
    • In water, 6.9X10-7 mg/L at 25 °C (fragment estimation)
    • Solubility in water, g/100ml: 4.1

  • Synonyms

    • 3050-88-2
    • Phenol, 4-nonyl-, phosphite (3:1)
    • Antioxidant TNP
    • Irgafos TNPP
    • Naugard TNPP
    • SUMILIZER TNP
    • p-Nonylphenol, phosphite (3:1)
    • DOVERPHOS 4
    • Tris(p-nonylphenyl) phosphite
    • E423N4NW2Z
    • DTXSID60872866
    • Phenol, nonyl-, 1,1',1''-phosphite
    • Tris[p-nonylphenyl] phosphite
    • Trisnonylphenylphosphit
    • RefChem:900350
    • DTXCID707903
    • Phenol,nonyl-,phosphite (3:1)
    • TRIS(NONYLPHENYL)PHOSPHITE [INCI]
    • 247-759-6
    • 608-492-4
    • 26523-78-4
    • Phenol, nonyl-, phosphite (3:1)
    • tris(nonylphenyl) phosphite
    • tris(nonylphenyl)phosphite
    • tris(4-nonylphenyl) phosphite
    • TNPP
    • C45H69O3P
    • tris(4-nonylphenyl)phosphite
    • SCHEMBL77176
    • tris-(p-nonylphenyl) phosphite
    • MGMXGCZJYUCMGY-UHFFFAOYSA-N
    • DAA05088
    • MSK157877-100B
    • MSK163562-100H
    • Phenol, 4-anonyl-a, phosphite (3:1)
    • MSK157877-1000B
    • MSK163562-1000H
    • CS-0160274
    • NS00002998
    • D97379
    • Tris(nonylphenyl) phosphite Solution in Acetone, 1000ug/mL
    • Tris(nonylphenyl) phosphite Solution in Acetone, 100ug/mL
    • Tris(4-nonylphenyl) phosphite Solution in Hexane, 1000ug/mL
    • Tris(4-nonylphenyl) phosphite Solution in Hexane, 100ug/mL
    • Tris(nonylphenyl) phosphite; TNNP; Tris(nonylphenol)phosphite
    • 26523-78-4

  • Applications

    Tris(nonylphenyl)phosphite (CAS 3050-88-2) is used primarily as a processing stabilizer and antioxidant for polymer systems, especially polyolefins and PVC, helping to suppress thermo-oxidative degradation and discoloration during manufacture and storage; it commonly serves as a thermal stabilizer and secondary antioxidant when blended with hindered phenols. It is often added to plastics during processing (extrusion, molding) to improve long-term stability of the material, and it can also be used as an additive in lubricants or hydraulic fluids to enhance oxidative stability. In coatings, paints, and inks on plastic substrates, TNPP can be considered an auxiliary stabilizer to extend service life, depending on formulation and local regulatory requirements.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 28.84
    methanol 20.8
    isopropanol 31.62
    water 0.47
    ethyl acetate 388.79
    n-propanol 49.25
    acetone 233.52
    n-butanol 49.5
    acetonitrile 70.92
    DMF 314.93
    toluene 288.25
    isobutanol 41.61
    1,4-dioxane 235.2
    methyl acetate 280.36
    THF 843.8
    2-butanone 333.74
    n-pentanol 43.97
    sec-butanol 55.17
    n-hexane 31.79
    ethylene glycol 3.21
    NMP 1062.8
    cyclohexane 84.97
    DMSO 296.47
    n-butyl acetate 243.09
    n-octanol 39.88
    chloroform 1929.0
    n-propyl acetate 274.27
    acetic acid 138.05
    dichloromethane 1951.74
    cyclohexanone 782.37
    propylene glycol 9.41
    isopropyl acetate 294.43
    DMAc 794.99
    2-ethoxyethanol 73.39
    isopentanol 49.87
    n-heptane 27.67
    ethyl formate 149.92
    1,2-dichloroethane 926.21
    n-hexanol 36.99
    2-methoxyethanol 80.44
    isobutyl acetate 171.1
    tetrachloromethane 361.15
    n-pentyl acetate 322.85
    transcutol 215.0
    n-heptanol 44.34
    ethylbenzene 115.53
    MIBK 200.92
    2-propoxyethanol 85.75
    tert-butanol 48.24
    MTBE 177.04
    2-butoxyethanol 104.01
    propionic acid 129.52
    o-xylene 181.73
    formic acid 27.84
    diethyl ether 151.84
    m-xylene 166.18
    p-xylene 162.43
    chlorobenzene 582.63
    dimethyl carbonate 230.3
    n-octane 15.95
    formamide 58.56
    cyclopentanone 954.38
    2-pentanone 326.85
    anisole 222.34
    cyclopentyl methyl ether 450.76
    gamma-butyrolactone 1032.47
    1-methoxy-2-propanol 91.18
    pyridine 485.53
    3-pentanone 366.17
    furfural 588.75
    n-dodecane 8.22
    diethylene glycol 25.59
    diisopropyl ether 79.21
    tert-amyl alcohol 78.56
    acetylacetone 487.72
    n-hexadecane 9.98
    acetophenone 292.5
    methyl propionate 361.2
    isopentyl acetate 223.58
    trichloroethylene 2032.68
    n-nonanol 45.36
    cyclohexanol 125.6
    benzyl alcohol 105.29
    2-ethylhexanol 49.59
    isooctanol 47.97
    dipropyl ether 145.1
    1,2-dichlorobenzene 607.87
    ethyl lactate 96.74
    propylene carbonate 582.23
    n-methylformamide 124.07
    2-pentanol 49.74
    n-pentane 25.07
    1-propoxy-2-propanol 94.66
    1-methoxy-2-propyl acetate 261.18
    2-(2-methoxypropoxy) propanol 93.21
    mesitylene 101.43
    ε-caprolactone 735.01
    p-cymene 70.68
    epichlorohydrin 1076.58
    1,1,1-trichloroethane 1216.15
    2-aminoethanol 12.22
    morpholine-4-carbaldehyde 400.3
    sulfolane 1329.62
    2,2,4-trimethylpentane 26.2
    2-methyltetrahydrofuran 566.99
    n-hexyl acetate 242.58
    isooctane 12.33
    2-(2-butoxyethoxy)ethanol 100.78
    sec-butyl acetate 228.16
    tert-butyl acetate 321.39
    decalin 39.4
    glycerin 16.0
    diglyme 281.25
    acrylic acid 112.81
    isopropyl myristate 91.84
    n-butyric acid 241.92
    acetyl acetate 348.59
    di(2-ethylhexyl) phthalate 77.24
    ethyl propionate 287.93
    nitromethane 338.48
    1,2-diethoxyethane 199.45
    benzonitrile 154.25
    trioctyl phosphate 57.56
    1-bromopropane 486.68
    gamma-valerolactone 927.04
    n-decanol 29.6
    triethyl phosphate 146.27
    4-methyl-2-pentanol 36.48
    propionitrile 92.3
    vinylene carbonate 483.91
    1,1,2-trichlorotrifluoroethane 569.14
    DMS 293.15
    cumene 69.94
    2-octanol 45.71
    2-hexanone 241.59
    octyl acetate 113.64
    limonene 118.96
    1,2-dimethoxyethane 207.73
    ethyl orthosilicate 144.95
    tributyl phosphate 80.61
    diacetone alcohol 185.75
    N,N-dimethylaniline 148.73
    acrylonitrile 110.0
    aniline 196.81
    1,3-propanediol 27.23
    bromobenzene 788.22
    dibromomethane 1078.68
    1,1,2,2-tetrachloroethane 1667.02
    2-methyl-cyclohexyl acetate 200.38
    tetrabutyl urea 116.58
    diisobutyl methanol 40.74
    2-phenylethanol 82.49
    styrene 157.4
    dioctyl adipate 152.14
    dimethyl sulfate 522.17
    ethyl butyrate 257.78
    methyl lactate 114.13
    butyl lactate 164.23
    diethyl carbonate 159.68
    propanediol butyl ether 54.8
    triethyl orthoformate 200.84
    p-tert-butyltoluene 69.34
    methyl 4-tert-butylbenzoate 234.61
    morpholine 275.09
    tert-butylamine 36.77
    n-dodecanol 21.8
    dimethoxymethane 242.06
    ethylene carbonate 415.03
    cyrene 150.5
    2-ethoxyethyl acetate 355.86
    2-ethylhexyl acetate 215.53
    1,2,4-trichlorobenzene 734.15
    4-methylpyridine 494.83
    dibutyl ether 122.67
    2,6-dimethyl-4-heptanol 40.74
    DEF 395.6
    dimethyl isosorbide 276.44
    tetrachloroethylene 889.73
    eugenol 144.04
    triacetin 305.02
    span 80 98.75
    1,4-butanediol 13.04
    1,1-dichloroethane 838.7
    2-methyl-1-pentanol 53.41
    methyl formate 124.77
    2-methyl-1-butanol 57.22
    n-decane 17.73
    butyronitrile 96.6
    3,7-dimethyl-1-octanol 44.52
    1-chlorooctane 80.01
    1-chlorotetradecane 26.73
    n-nonane 16.72
    undecane 11.13
    tert-butylcyclohexane 29.08
    cyclooctane 38.84
    cyclopentanol 142.3
    tetrahydropyran 404.95
    tert-amyl methyl ether 194.92
    2,5,8-trioxanonane 155.53
    1-hexene 78.5
    2-isopropoxyethanol 68.15
    2,2,2-trifluoroethanol 108.59
    methyl butyrate 357.22

    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