Dibutyl phosphate

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  • Identifiers

    CAS number
    107-66-4

    Molecular formula
    C8H19O4P

    SMILES
    CCCCOP(=O)(O)OCCCC

    Safety labels

    Corrosive
    Corrosive

    Health Hazard
    Health

  • Odor profile

    Fruity 42.33%
    Green 37.29%
    Herbal 34.4%
    Odorless 33.18%
    Fresh 28.54%
    Oily 28.09%
    Winey 27.03%
    Fermented 25.96%
    Ethereal 25.28%
    Alcoholic 24.57%

    Scent© AI

  • Properties

    XLogP3-AA
    1.5

    Molecular weight
    210.21 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Melting point expt.

    • 8.6 °F (ICSC, 2024)
    • -13 °C

    Boiling point

    • 212 °F at 760 mmHg (Decomposes) (NIOSH, 2024)
    • 136 °C at 0.05 mm Hg
    • 135-138 °C
    • 212 °F (decomposes)
    • 212 °F (Decomposes)

    Flash point est.
    152.37 ˚C

    Flash point expt.

    • 370 °F (ICSC, 2024)
    • 188 °C o.c.

    Solubility expt.

    • 18 g/L at 68 °F (ICSC, 2024)
    • Soluble in carbon tetrachloride, butanol
    • In water, 1.72X10+4 mg/L at 25 °C
    • Solubility in water, g/100ml at 20 °C: 1.8
    • Insoluble

  • Synonyms

    • DIBUTYL PHOSPHATE
    • Dibutyl hydrogen phosphate
    • 107-66-4
    • Di-n-butyl phosphate
    • Dibutylphosphate
    • Phosphoric acid, dibutyl ester
    • Di-n-butylphosphoric acid
    • Di-n-butyl hydrogen phosphate
    • HSDB 2513
    • EINECS 203-509-8
    • di-n-butylphosphate
    • Phosphoric acid dibutyl ester
    • UNII-0072NN74TN
    • BRN 0607224
    • DTXSID3040728
    • AI3-07849
    • 0072NN74TN
    • DIBUTYL PHOSPHATE [HSDB]
    • DTXCID1020728
    • EC 203-509-8
    • 4-01-00-01530 (Beilstein Handbook Reference)
    • Dibutyl acid phosphate
    • dibutyl acid o-phosphate
    • DP 4 (coupling agent)
    • 19069-28-4
    • Dibutyl phosphoric acid
    • Phosphoric acid di-n-butyl ester
    • Dinbutyl phosphate
    • MFCD00015245
    • 72283-56-8
    • Dinbutyl hydrogen phosphate
    • SCHEMBL26559
    • CHEMBL3187678
    • Dibutyl phosphate (ACGIH:OSHA)
    • DIBUTYL PHOSPHATE; (TBP)
    • CHEBI:166473
    • JYFHYPJRHGVZDY-UHFFFAOYSA-N
    • Tox21_301186
    • NSC 22313
    • NSC289390
    • Dibutyl phosphate, >=97.0% (T)
    • AKOS009029141
    • NSC 203039
    • NSC-289390
    • NCGC00164273-01
    • NCGC00164273-02
    • NCGC00255084-01
    • CAS-107-66-4
    • DB-040773
    • DB-230191
    • CS-0113589
    • NS00009170
    • P0260
    • P0267
    • F71269
    • Q20963648

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1065.56
    methanol 1489.71
    isopropanol 830.79
    water 8.17
    ethyl acetate 180.67
    n-propanol 772.67
    acetone 544.43
    n-butanol 605.93
    acetonitrile 253.55
    DMF 1680.55
    toluene 158.97
    isobutanol 501.2
    1,4-dioxane 677.33
    methyl acetate 256.08
    THF 1179.27
    2-butanone 370.53
    n-pentanol 439.46
    sec-butanol 638.07
    n-hexane 38.15
    ethylene glycol 369.78
    NMP 1342.65
    cyclohexane 110.27
    DMSO 1511.58
    n-butyl acetate 247.06
    n-octanol 197.01
    chloroform 931.36
    n-propyl acetate 178.97
    acetic acid 689.3
    dichloromethane 785.62
    cyclohexanone 787.22
    propylene glycol 538.98
    isopropyl acetate 147.29
    DMAc 965.26
    2-ethoxyethanol 510.32
    isopentanol 413.4
    n-heptane 30.03
    ethyl formate 249.33
    1,2-dichloroethane 654.98
    n-hexanol 399.67
    2-methoxyethanol 994.19
    isobutyl acetate 123.75
    tetrachloromethane 98.71
    n-pentyl acetate 223.1
    transcutol 580.82
    n-heptanol 231.07
    ethylbenzene 82.13
    MIBK 177.97
    2-propoxyethanol 549.25
    tert-butanol 732.39
    MTBE 304.1
    2-butoxyethanol 381.27
    propionic acid 505.96
    o-xylene 120.05
    formic acid 390.39
    diethyl ether 236.85
    m-xylene 101.56
    p-xylene 119.65
    chlorobenzene 284.7
    dimethyl carbonate 116.46
    n-octane 17.65
    formamide 579.59
    cyclopentanone 938.52
    2-pentanone 291.17
    anisole 167.62
    cyclopentyl methyl ether 372.71
    gamma-butyrolactone 954.25
    1-methoxy-2-propanol 653.83
    pyridine 653.97
    3-pentanone 201.14
    furfural 777.16
    n-dodecane 16.03
    diethylene glycol 425.97
    diisopropyl ether 75.41
    tert-amyl alcohol 573.83
    acetylacetone 297.19
    n-hexadecane 17.65
    acetophenone 223.71
    methyl propionate 205.94
    isopentyl acetate 222.02
    trichloroethylene 927.92
    n-nonanol 169.09
    cyclohexanol 577.16
    benzyl alcohol 246.73
    2-ethylhexanol 188.57
    isooctanol 167.25
    dipropyl ether 129.51
    1,2-dichlorobenzene 258.85
    ethyl lactate 135.63
    propylene carbonate 446.53
    n-methylformamide 786.12
    2-pentanol 365.79
    n-pentane 52.21
    1-propoxy-2-propanol 362.93
    1-methoxy-2-propyl acetate 221.96
    2-(2-methoxypropoxy) propanol 224.76
    mesitylene 72.8
    ε-caprolactone 589.5
    p-cymene 70.02
    epichlorohydrin 854.2
    1,1,1-trichloroethane 317.26
    2-aminoethanol 705.86
    morpholine-4-carbaldehyde 873.18
    sulfolane 1423.79
    2,2,4-trimethylpentane 24.94
    2-methyltetrahydrofuran 649.01
    n-hexyl acetate 263.18
    isooctane 18.54
    2-(2-butoxyethoxy)ethanol 360.25
    sec-butyl acetate 111.39
    tert-butyl acetate 179.84
    decalin 33.49
    glycerin 570.98
    diglyme 526.01
    acrylic acid 469.28
    isopropyl myristate 103.48
    n-butyric acid 517.44
    acetyl acetate 135.67
    di(2-ethylhexyl) phthalate 132.83
    ethyl propionate 125.65
    nitromethane 671.98
    1,2-diethoxyethane 197.89
    benzonitrile 278.56
    trioctyl phosphate 108.94
    1-bromopropane 302.55
    gamma-valerolactone 1101.09
    n-decanol 127.34
    triethyl phosphate 88.07
    4-methyl-2-pentanol 179.81
    propionitrile 282.3
    vinylene carbonate 427.79
    1,1,2-trichlorotrifluoroethane 666.22
    DMS 160.56
    cumene 61.1
    2-octanol 163.53
    2-hexanone 225.37
    octyl acetate 143.38
    limonene 113.05
    1,2-dimethoxyethane 584.97
    ethyl orthosilicate 85.82
    tributyl phosphate 112.77
    diacetone alcohol 306.66
    N,N-dimethylaniline 142.71
    acrylonitrile 372.29
    aniline 292.75
    1,3-propanediol 706.35
    bromobenzene 255.05
    dibromomethane 563.89
    1,1,2,2-tetrachloroethane 968.59
    2-methyl-cyclohexyl acetate 167.23
    tetrabutyl urea 170.59
    diisobutyl methanol 110.14
    2-phenylethanol 249.71
    styrene 108.71
    dioctyl adipate 147.26
    dimethyl sulfate 225.55
    ethyl butyrate 142.91
    methyl lactate 213.68
    butyl lactate 221.78
    diethyl carbonate 107.2
    propanediol butyl ether 380.0
    triethyl orthoformate 119.51
    p-tert-butyltoluene 73.71
    methyl 4-tert-butylbenzoate 221.2
    morpholine 1010.79
    tert-butylamine 450.36
    n-dodecanol 97.5
    dimethoxymethane 466.99
    ethylene carbonate 359.74
    cyrene 281.36
    2-ethoxyethyl acetate 224.17
    2-ethylhexyl acetate 174.98
    1,2,4-trichlorobenzene 321.06
    4-methylpyridine 503.2
    dibutyl ether 124.0
    2,6-dimethyl-4-heptanol 110.14
    DEF 430.23
    dimethyl isosorbide 374.19
    tetrachloroethylene 579.51
    eugenol 240.35
    triacetin 198.06
    span 80 299.85
    1,4-butanediol 330.69
    1,1-dichloroethane 443.28
    2-methyl-1-pentanol 299.02
    methyl formate 411.53
    2-methyl-1-butanol 397.76
    n-decane 23.35
    butyronitrile 289.29
    3,7-dimethyl-1-octanol 161.98
    1-chlorooctane 95.79
    1-chlorotetradecane 43.36
    n-nonane 21.78
    undecane 18.88
    tert-butylcyclohexane 26.64
    cyclooctane 30.15
    cyclopentanol 775.04
    tetrahydropyran 691.91
    tert-amyl methyl ether 225.66
    2,5,8-trioxanonane 375.38
    1-hexene 126.59
    2-isopropoxyethanol 286.42
    2,2,2-trifluoroethanol 231.71
    methyl butyrate 218.91

    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