Diisooctyl phthalate

Overview IFRA Botanical Request a quote

  • Identifiers

    CAS number
    27554-26-3

    Molecular formula
    C24H38O4

    SMILES
    CC(C)CCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCC(C)C

    Safety labels

    Health Hazard
    Health

  • Odor profile

    Floral 56.52%
    Balsamic 52.38%
    Herbal 49.24%
    Sweet 40.51%
    Rose 33.08%
    Fruity 32.62%
    Fresh 32.25%
    Woody 30.23%
    Oily 29.35%
    Odorless 28.92%

    Scent© AI

  • Properties

    XLogP3-AA
    8.5

    Molecular weight
    390.6 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Melting point expt.

    • -4 °C /From Table/
    • -45 °C

    Boiling point

    • 1288 °F at 760 mmHg (USCG, 1999)
    • 370 °C

    Flash point est.
    200.45 ˚C

    Flash point expt.

    • 450 °F (USCG, 1999)
    • 450 °F; 232 °C /(method not specified)/
    • 450 °F (232 °C) (Closed cup)
    • 227 °C c.c.

    Solubility expt.

    • ... compatible with vinyl chloride resins and some cellulosic resins
    • In water, 9.0X10-2 mg/L at 25 °C
    • Solubility in water: none

  • Synonyms

    • Diisooctyl phthalate
    • Bis(6-methylheptyl) phthalate
    • 27554-26-3
    • 131-20-4
    • Isooctyl phthalate
    • Di-iso-octyl phthalate
    • Phthalic acid, diisooctyl ester
    • Corflex 880
    • bis(6-methylheptyl) benzene-1,2-dicarboxylate
    • Diisooctyl 1,2-benzenedicarboxylate
    • 1,2-Benzenedicarboxylic acid, diisooctyl ester
    • Phthalic acid, bis(6-methylheptyl)ester
    • CHEBI:34710
    • 6A121LGB40
    • Flexol Plasticizer DIOP
    • Hexaplas M/O
    • 1,2-Benzenedicarboxylic acid, 1,2-diisooctyl ester
    • Bis(6-methylheptyl) Phthalate (>85%)
    • HSDB 588
    • NSC 6381
    • EINECS 248-523-5
    • AI3-27697-X (USDA)
    • UNII-6A121LGB40
    • HEXAPLAS DIOP
    • JAYFLEX DIOP
    • DSSTox_CID_7933
    • Phthalic acid, bis-isooctyl ester (technical)
    • Hexaplas M/O (Salt/Mix)
    • DSSTox_RID_78618
    • DSSTox_GSID_27933
    • DIISOOCTYL O-PHTHALATE
    • BIDD:ER0438
    • SCHEMBL109014
    • QSPL 045
    • QSPL 083
    • 1,2-Benzenedicarboxylic acid, bis(6-methylheptyl) ester
    • CHEMBL3186540
    • UNEM 5005
    • DTXSID50873226
    • MSK1128
    • DIISOOCTYL PHTHALATE [HSDB]
    • CBA55426
    • NSC-6381
    • Tox21_200466
    • AKOS015916164
    • 1ST1128
    • Phthalic acid, bis-6-methylheptyl ester
    • NCGC00248637-01
    • NCGC00258020-01
    • AS-17769
    • FB182610
    • MSK1128-1000
    • CAS-27554-26-3
    • CS-0154229
    • NS00015578
    • 1,2-Benzenedicarboxylic acid,diisooctyl ester
    • 1,2Benzenedicarboxylic acid, diisooctyl ester
    • 1ST1128-1000
    • D70235
    • Diisooctyl phthalate Solution in Hexane, 1000?g/mL
    • Q2532970
    • 1,2-BENZENEDICARBOXYLIC ACID, DIISOOTYL ESTER
    • Diisooctyl phthalate Solution in Hexane, 1000mug/mL
    • 1,2-Benzenedicarboxylic acid, 1,1'-(2,2-dimethyl-1,3-propanediyl) 2,2'-diisooctyl ester
    • 1,2-Benzenedicarboxylic Acid, 1,2-bis(6-Methylheptyl) Ester;1,2-Benzenedicarboxylic Acid bis(6-Methylheptyl) Ester

  • Applications

    Diisooctyl phthalate (DIOP, CAS 27554-26-3) is a general-purpose phthalate plasticizer for PVC and other vinyl resins that imparts flexibility, improves processability and electrical insulation, and is therefore widely used in wire and cable insulation and jacketing, flexible hose and tubing, PVC films and sheets, synthetic leather, flooring and wallcoverings, tarpaulins and coated fabrics, as well as in plastisols for dip coating, knife-coating and slush molding; it also serves as a plasticizer and viscosity modifier in adhesives, sealants, paints, printing inks and nitrocellulose lacquers, and as a softener/plasticizing oil for certain elastomers and specialty resins (e.g., acrylics, chlorinated rubber, vinyl copolymers), gaskets, seals and extruded or molded parts where durable softness, stable processing, weatherability and adequate low-temperature flexibility are required, while material selection should account for migration, odor and volatility requirements and for regulatory restrictions on phthalates (especially in food-contact items, toys and childcare articles) that vary by jurisdiction.

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 202.65
    methanol 176.81
    isopropanol 195.44
    water 0.58
    ethyl acetate 1234.99
    n-propanol 286.54
    acetone 978.68
    n-butanol 270.27
    acetonitrile 535.46
    DMF 1432.02
    toluene 770.47
    isobutanol 252.7
    1,4-dioxane 672.37
    methyl acetate 1066.0
    THF 1781.45
    2-butanone 1227.47
    n-pentanol 227.58
    sec-butanol 341.51
    n-hexane 58.15
    ethylene glycol 18.81
    NMP 2810.7
    cyclohexane 144.85
    DMSO 969.25
    n-butyl acetate 676.68
    n-octanol 131.99
    chloroform 4009.53
    n-propyl acetate 771.94
    acetic acid 490.68
    dichloromethane 4842.71
    cyclohexanone 2080.54
    propylene glycol 55.95
    isopropyl acetate 815.19
    DMAc 2595.88
    2-ethoxyethanol 411.08
    isopentanol 283.33
    n-heptane 23.55
    ethyl formate 470.55
    1,2-dichloroethane 3249.09
    n-hexanol 174.47
    2-methoxyethanol 464.42
    isobutyl acetate 467.85
    tetrachloromethane 586.78
    n-pentyl acetate 713.51
    transcutol 1209.23
    n-heptanol 143.82
    ethylbenzene 339.81
    MIBK 634.44
    2-propoxyethanol 398.05
    tert-butanol 268.36
    MTBE 581.12
    2-butoxyethanol 379.05
    propionic acid 505.43
    o-xylene 484.81
    formic acid 115.22
    diethyl ether 520.85
    m-xylene 418.09
    p-xylene 451.39
    chlorobenzene 1368.91
    dimethyl carbonate 479.74
    n-octane 15.49
    formamide 323.25
    cyclopentanone 2326.55
    2-pentanone 1012.6
    anisole 687.8
    cyclopentyl methyl ether 1149.71
    gamma-butyrolactone 2368.77
    1-methoxy-2-propanol 459.15
    pyridine 1527.45
    3-pentanone 1023.09
    furfural 1486.51
    n-dodecane 10.22
    diethylene glycol 155.13
    diisopropyl ether 196.85
    tert-amyl alcohol 410.22
    acetylacetone 1196.09
    n-hexadecane 12.52
    acetophenone 856.32
    methyl propionate 1098.76
    isopentyl acetate 654.43
    trichloroethylene 5436.28
    n-nonanol 133.82
    cyclohexanol 525.53
    benzyl alcohol 454.56
    2-ethylhexanol 155.03
    isooctanol 145.08
    dipropyl ether 232.48
    1,2-dichlorobenzene 1370.89
    ethyl lactate 294.44
    propylene carbonate 1335.43
    n-methylformamide 611.48
    2-pentanol 254.16
    n-pentane 46.99
    1-propoxy-2-propanol 346.13
    1-methoxy-2-propyl acetate 747.84
    2-(2-methoxypropoxy) propanol 346.39
    mesitylene 227.98
    ε-caprolactone 1790.1
    p-cymene 144.6
    epichlorohydrin 2967.6
    1,1,1-trichloroethane 2640.75
    2-aminoethanol 90.82
    morpholine-4-carbaldehyde 1469.78
    sulfolane 2753.48
    2,2,4-trimethylpentane 47.18
    2-methyltetrahydrofuran 1642.82
    n-hexyl acetate 688.38
    isooctane 20.74
    2-(2-butoxyethoxy)ethanol 430.16
    sec-butyl acetate 617.69
    tert-butyl acetate 847.99
    decalin 75.36
    glycerin 77.4
    diglyme 974.23
    acrylic acid 411.79
    isopropyl myristate 177.34
    n-butyric acid 796.81
    acetyl acetate 779.46
    di(2-ethylhexyl) phthalate 179.85
    ethyl propionate 752.82
    nitromethane 1364.93
    1,2-diethoxyethane 618.86
    benzonitrile 635.92
    trioctyl phosphate 116.33
    1-bromopropane 1468.04
    gamma-valerolactone 2190.27
    n-decanol 83.26
    triethyl phosphate 253.63
    4-methyl-2-pentanol 153.62
    propionitrile 538.14
    vinylene carbonate 1038.46
    1,1,2-trichlorotrifluoroethane 1529.9
    DMS 694.7
    cumene 197.38
    2-octanol 124.51
    2-hexanone 689.57
    octyl acetate 258.07
    limonene 237.52
    1,2-dimethoxyethane 724.03
    ethyl orthosilicate 234.45
    tributyl phosphate 177.69
    diacetone alcohol 676.32
    N,N-dimethylaniline 474.45
    acrylonitrile 649.22
    aniline 741.1
    1,3-propanediol 157.72
    bromobenzene 1601.6
    dibromomethane 2844.48
    1,1,2,2-tetrachloroethane 4565.94
    2-methyl-cyclohexyl acetate 440.19
    tetrabutyl urea 250.23
    diisobutyl methanol 95.97
    2-phenylethanol 341.62
    styrene 478.77
    dioctyl adipate 299.68
    dimethyl sulfate 959.63
    ethyl butyrate 495.96
    methyl lactate 384.03
    butyl lactate 434.01
    diethyl carbonate 316.37
    propanediol butyl ether 248.92
    triethyl orthoformate 318.78
    p-tert-butyltoluene 134.95
    methyl 4-tert-butylbenzoate 526.02
    morpholine 1112.69
    tert-butylamine 180.62
    n-dodecanol 55.71
    dimethoxymethane 750.12
    ethylene carbonate 882.77
    cyrene 435.02
    2-ethoxyethyl acetate 974.89
    2-ethylhexyl acetate 541.29
    1,2,4-trichlorobenzene 1786.76
    4-methylpyridine 1710.04
    dibutyl ether 247.3
    2,6-dimethyl-4-heptanol 95.97
    DEF 1487.99
    dimethyl isosorbide 783.87
    tetrachloroethylene 2430.58
    eugenol 427.67
    triacetin 711.69
    span 80 280.9
    1,4-butanediol 79.19
    1,1-dichloroethane 2633.68
    2-methyl-1-pentanol 275.11
    methyl formate 424.79
    2-methyl-1-butanol 351.05
    n-decane 21.08
    butyronitrile 488.43
    3,7-dimethyl-1-octanol 155.29
    1-chlorooctane 176.58
    1-chlorotetradecane 48.4
    n-nonane 19.71
    undecane 13.76
    tert-butylcyclohexane 52.59
    cyclooctane 41.66
    cyclopentanol 564.82
    tetrahydropyran 1102.3
    tert-amyl methyl ether 607.3
    2,5,8-trioxanonane 513.53
    1-hexene 241.11
    2-isopropoxyethanol 341.26
    2,2,2-trifluoroethanol 309.63
    methyl butyrate 963.83

    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

Botanical

Name CAS Botanical Proportion
Artemisia monosperma Artemisia monosperma Del., fam. Asteraceae (Compositae) 3.0%