p-alpha-Dimethyl styrene

Overview IFRA Botanical Request a quote

  • Identifiers

    CAS number
    1195-32-0

    Molecular formula
    C10H12

    SMILES
    CC1=CC=C(C=C1)C(=C)C

    Safety labels

    Health Hazard
    Health

    Retention indicies (RI)

    • DB5: 1092.43
    • Carbowax: 1435.14

  • Odor profile

    Herbal 66.32%
    Spicy 55.91%
    Phenolic 47.15%
    Citrus 46.57%
    Terpenic 46.29%
    Woody 40.19%
    Lemon 39.44%
    Nutty 38.66%
    Sweet 38.02%
    Musty 37.08%

    Scent© AI

  • Properties

    XLogP3-AA
    3.7

    Molecular weight
    132.2 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Fast

    Melting point expt.

    • -20 °C

    Boiling point

    • 186.00 to 189.00 °C. @ 760.00 mm Hg

    Flash point est.
    62.92 ˚C

    Solubility expt.

    • Insoluble in water; soluble in oils
    • Soluble (in ethanol)

  • Synonyms

    • 1195-32-0
    • 1-Methyl-4-(prop-1-en-2-yl)benzene
    • Dehydro-p-cymene
    • 2-P-Tolylpropene
    • alpha,p-Dimethylstyrene
    • p,alpha-Dimethylstyrene
    • 1-Methyl-4-isopropenylbenzene
    • p-cymenene
    • 4-Methylisopropenylbenzene
    • 2-(P-Methylphenyl)propene
    • Isopropenyltoluene, p-
    • p-alpha-Dimethylstyrene
    • 1-Methyl-4-(1-methylethenyl)benzene
    • p-alpha-Dimethyl styrene
    • 1-Isopropenyl-4-methylbenzene
    • Methyl-p-isopropenylbenzene
    • 4-Methyl-alpha-methylstyrene
    • alpha-Methyl-P-methylstyrene
    • 1-methyl-4-prop-1-en-2-ylbenzene
    • BENZENE, 1-METHYL-4-(1-METHYLETHENYL)-
    • FEMA No. 3144
    • Styrene, P-alpha-dimethyl-
    • p-Mentha-1,3,5,8-tetraene
    • NSC 361058
    • Dimethylstyrene, p-alpha-
    • EINECS 214-795-9
    • p-Methyl-alpha-methylstyrene
    • XC8HY3OB86
    • Styrene, p,.alpha.-dimethyl-
    • p-Isopropenyl toluene
    • p,.alpha.-Dimethylstyrene
    • 1-methyl-4-prop-1-en-2-yl-benzene
    • NSC-361058
    • 1-p-Tolyl-1-methylethylene
    • ghl.PD_Mitscher_leg0.317
    • P-.ALPHA.-DIMETHYL STYRENE
    • Methyl-4-(1-methylethenyl)-benzene
    • DIMETHYLSTYRENE, P-.ALPHA.-
    • STYRENE, P-.ALPHA.-DIMETHYL-
    • 1-Methyl-4-(1-methylethenyl)-benzene
    • 4-Isopropenyltoluene (stabilized with TBC)
    • P-.ALPHA.-DIMETHYL STYRENE [FHFI]
    • UNII-XC8HY3OB86
    • cymenene
    • 1-Methyl-4-prop-1-en-2-ylbenzene (Stabilized with TBC)
    • p-isopropenyltoluene
    • NSC361058
    • Isopropenyl toluene c
    • P,alpha-Dimethylstyrol
    • alpha-p dimethylstyrene
    • 4,alpha-Dimethylstyrene
    • alpha,4-Dimethylstyrene
    • alpha-Dimethyl-p-styrene
    • p,alpha-Dimethyl-Styrene
    • p-alpha-Dimethyl-Styrene
    • .alpha.,p-Dimethylstyrene
    • p,a-Dimethylstyrene, 8CI
    • .alpha.,4-Dimethylstyrene
    • P,?-DIMETHYLSTYRENE
    • Para- alpha-dimethylstyrene
    • 2-(4-Methylphenyl)propene
    • 1-Methyl-4alpha-methylstyrene
    • para- .alpha.-Dimethylstyrene
    • p-Methyl-.alpha.-methylstyrene
    • 4-Methyl-.alpha.-methylstyrene
    • DTXSID7047564
    • 1-methyl-4.alpha.-methylstyrene
    • CHEBI:89920
    • FEMA 3144
    • 1-Isopropenyl-4-methylbenzene #
    • 4-CH3C6H4C(CH3)CH2
    • MFCD00036510
    • AKOS012525086
    • AS-85350
    • 1-Methyl-4-(1-methylethenyl)benzene, 9CI
    • I0693
    • NS00012338
    • p,alpha-Dimethylstyrene, >=98%, stabilized
    • 1-METHYL-4-(1-METHYLETHENYL) BENZENE
    • F17145
    • A804307
    • Q27162104
    • alpha,4-Dimethylstyrene, stabilized with 4-t-butylcatechol
    • 214-795-9

  • Applications

    p,α-Dimethylstyrene (CAS 1195-32-0) is an aromatic monomer mainly employed as a comonomer to tailor the properties of high-performance styrenic and acrylic resins, where the para and α methyl groups raise the glass-transition temperature, enhance mechanical strength and chemical resistance; it is also used to generate precursors for highly porous ion-exchange resins, clear molding plastics, heat-resistant adhesives, protective coatings for electronic devices, high-refractive-index optical materials, and serves as an intermediate for synthesizing ring-containing derivatives in agrochemical and pharmaceutical sectors.

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 363.99
    methanol 163.78
    isopropanol 229.61
    water 0.09
    ethyl acetate 747.13
    n-propanol 290.86
    acetone 395.34
    n-butanol 341.2
    acetonitrile 507.33
    DMF 262.39
    toluene 491.26
    isobutanol 164.55
    1,4-dioxane 1337.02
    methyl acetate 438.71
    THF 1574.16
    2-butanone 515.3
    n-pentanol 223.68
    sec-butanol 244.59
    n-hexane 219.64
    ethylene glycol 16.87
    NMP 238.49
    cyclohexane 260.69
    DMSO 199.87
    n-butyl acetate 977.6
    n-octanol 204.04
    chloroform 1088.33
    n-propyl acetate 355.42
    acetic acid 147.89
    dichloromethane 1121.75
    cyclohexanone 578.24
    propylene glycol 40.98
    isopropyl acetate 370.85
    DMAc 265.73
    2-ethoxyethanol 209.31
    isopentanol 240.61
    n-heptane 404.3
    ethyl formate 287.95
    1,2-dichloroethane 576.87
    n-hexanol 573.04
    2-methoxyethanol 297.1
    isobutyl acetate 224.37
    tetrachloromethane 196.26
    n-pentyl acetate 275.5
    transcutol 996.98
    n-heptanol 186.3
    ethylbenzene 247.12
    MIBK 266.22
    2-propoxyethanol 492.54
    tert-butanol 294.73
    MTBE 517.67
    2-butoxyethanol 216.82
    propionic acid 132.39
    o-xylene 197.91
    formic acid 22.44
    diethyl ether 1018.4
    m-xylene 251.78
    p-xylene 276.47
    chlorobenzene 393.93
    dimethyl carbonate 118.6
    n-octane 89.96
    formamide 61.24
    cyclopentanone 542.32
    2-pentanone 519.22
    anisole 428.07
    cyclopentyl methyl ether 624.73
    gamma-butyrolactone 485.22
    1-methoxy-2-propanol 252.71
    pyridine 906.62
    3-pentanone 386.75
    furfural 342.51
    n-dodecane 47.85
    diethylene glycol 147.57
    diisopropyl ether 252.67
    tert-amyl alcohol 258.77
    acetylacetone 354.33
    n-hexadecane 55.06
    acetophenone 258.92
    methyl propionate 361.68
    isopentyl acetate 621.33
    trichloroethylene 876.05
    n-nonanol 194.49
    cyclohexanol 239.49
    benzyl alcohol 174.46
    2-ethylhexanol 428.05
    isooctanol 143.06
    dipropyl ether 1208.74
    1,2-dichlorobenzene 277.21
    ethyl lactate 80.9
    propylene carbonate 298.91
    n-methylformamide 119.85
    2-pentanol 230.6
    n-pentane 160.45
    1-propoxy-2-propanol 432.84
    1-methoxy-2-propyl acetate 512.27
    2-(2-methoxypropoxy) propanol 264.93
    mesitylene 142.08
    ε-caprolactone 450.99
    p-cymene 224.3
    epichlorohydrin 725.38
    1,1,1-trichloroethane 567.71
    2-aminoethanol 59.6
    morpholine-4-carbaldehyde 381.83
    sulfolane 286.13
    2,2,4-trimethylpentane 51.49
    2-methyltetrahydrofuran 1113.24
    n-hexyl acetate 393.23
    isooctane 50.04
    2-(2-butoxyethoxy)ethanol 351.55
    sec-butyl acetate 249.15
    tert-butyl acetate 351.89
    decalin 91.79
    glycerin 43.22
    diglyme 691.19
    acrylic acid 80.62
    isopropyl myristate 190.53
    n-butyric acid 328.33
    acetyl acetate 309.78
    di(2-ethylhexyl) phthalate 131.8
    ethyl propionate 331.69
    nitromethane 261.22
    1,2-diethoxyethane 900.22
    benzonitrile 299.51
    trioctyl phosphate 90.98
    1-bromopropane 609.15
    gamma-valerolactone 526.1
    n-decanol 147.88
    triethyl phosphate 166.85
    4-methyl-2-pentanol 132.23
    propionitrile 418.9
    vinylene carbonate 253.53
    1,1,2-trichlorotrifluoroethane 200.55
    DMS 216.14
    cumene 153.52
    2-octanol 126.11
    2-hexanone 391.32
    octyl acetate 228.26
    limonene 346.66
    1,2-dimethoxyethane 689.4
    ethyl orthosilicate 179.7
    tributyl phosphate 117.74
    diacetone alcohol 228.25
    N,N-dimethylaniline 247.5
    acrylonitrile 302.91
    aniline 289.34
    1,3-propanediol 127.17
    bromobenzene 464.94
    dibromomethane 839.44
    1,1,2,2-tetrachloroethane 585.81
    2-methyl-cyclohexyl acetate 333.78
    tetrabutyl urea 159.55
    diisobutyl methanol 212.68
    2-phenylethanol 291.91
    styrene 311.11
    dioctyl adipate 234.61
    dimethyl sulfate 102.59
    ethyl butyrate 636.99
    methyl lactate 76.33
    butyl lactate 124.58
    diethyl carbonate 323.56
    propanediol butyl ether 127.1
    triethyl orthoformate 342.08
    p-tert-butyltoluene 220.0
    methyl 4-tert-butylbenzoate 226.16
    morpholine 1249.65
    tert-butylamine 253.39
    n-dodecanol 117.94
    dimethoxymethane 382.78
    ethylene carbonate 237.31
    cyrene 151.79
    2-ethoxyethyl acetate 354.2
    2-ethylhexyl acetate 574.56
    1,2,4-trichlorobenzene 290.98
    4-methylpyridine 686.26
    dibutyl ether 549.06
    2,6-dimethyl-4-heptanol 212.68
    DEF 398.11
    dimethyl isosorbide 515.03
    tetrachloroethylene 357.74
    eugenol 176.23
    triacetin 238.6
    span 80 224.36
    1,4-butanediol 38.06
    1,1-dichloroethane 597.42
    2-methyl-1-pentanol 203.4
    methyl formate 98.12
    2-methyl-1-butanol 213.26
    n-decane 89.33
    butyronitrile 559.0
    3,7-dimethyl-1-octanol 212.07
    1-chlorooctane 241.24
    1-chlorotetradecane 91.92
    n-nonane 99.58
    undecane 61.68
    tert-butylcyclohexane 89.48
    cyclooctane 108.17
    cyclopentanol 196.16
    tetrahydropyran 1402.0
    tert-amyl methyl ether 360.22
    2,5,8-trioxanonane 484.88
    1-hexene 527.94
    2-isopropoxyethanol 161.79
    2,2,2-trifluoroethanol 32.62
    methyl butyrate 369.91

    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

Botanical

Name CAS Botanical Proportion
Bergamot (Italy) 1 8007-75-8 Citrus bergamia Risso et Poiteau, fam. Rutaceae 0.01%
Boldo leaf Boldea fragrans Juss. (Peumus boldus Mol.) 0.3%
Carrot seed (France) 1 8015-88-1 Daucus carota L., fam. Apiaceae (Umbelliferae) 0.07%
Cedarleaf 2 8000-27-9 Thuja occidentalis L., fam. Taxodiaceae 0.05%
Roman chamomile (Italy) 1 8015-92-7 Anthemis nobilis L., fam. Asteraceae (Compositae) 0.25%
Cymbopogon jwarancusa (Himalaya) Cymbopogon jwarancusa (Jones) Schult., fam. Poaceae (Gramineae) 0.09%
Cypress 8013-86-3 Cupressus sempervirens L. (C. fastigiata DC), fam. Cupressaceae 0.09%
Ducrosia anethifolia (Pakistan) Ducrosia anethifolia (DC.) Boiss., fam. Apiaceae (Umbelliferae) 0.06%
Eugenia javanica Eugenia javanica Lamk., fam. Myrtaceae 0.1%
Hemizygia welwitschii Hemizygia welwitschii (Rolfe) M.Ashby (Orthosiphon welwitschii) 0.1%
Hortensis leaf Euodia hortensis forma hortensis, fam. Saxifragaceae (Hydrangea) 0.05%
Hortensis flower Euodia hortensis forma hortensis, fam. Saxifragaceae (Hydrangea) 0.1%
Indian dill Anethum sowa Roxb., fam. Apiaceae (Umbelliferae) 0.1%
Juniper berry 3 8012-91-7 Juniperus communis L., fam. Cupressaceae 0.3%
Juniper branch 8012-91-7 Juniperus communis L., fam. Cupressaceae 0.15%
Laurel leaf (Spain) 2 8006-78-8 Laurus nobilis L., fam. Lauraceae 0.05%
Laurel leaf (Spain) 3 8006-78-8 Laurus nobilis L., fam. Lauraceae 0.05%
Mace 2 8007-12-3 Myristica fragrans Houtt., fam. Myristicaceae 0.1%
Marjoram, sweet (Egypt) 1 8015-01-8 Majorana hortensis Moench, Origanum majorana L., fam. Lamiaceae (Labiatae) 0.1%
Marjoram, sweet (France) 8015-01-8 Majorana hortensis Moench, Origanum majorana L., fam. Lamiaceae (Labiatae) 0.1%
Marjoram, sweet (Germany) 8015-01-8 Majorana hortensis Moench, Origanum majorana L., fam. Lamiaceae (Labiatae) 0.05%
Marjoram, sweet (Hungary) 8015-01-8 Majorana hortensis Moench, Origanum majorana L., fam. Lamiaceae (Labiatae) 0.05%
Marjoram, sweet (Portugal) 8015-01-8 Majorana hortensis Moench, Origanum majorana L., fam. Lamiaceae (Labiatae) 0.05%
Marjoram, sweet (Rumania) 8015-01-8 Majorana hortensis Moench, Origanum majorana L., fam. Lamiaceae (Labiatae) 0.05%
Marjoram, sweet (Tunisia) 1 8015-01-8 Majorana hortensis Moench, Origanum majorana L., fam. Lamiaceae (Labiatae) 0.05%
Mastic gum (Greece) 1 61789-92-2 Pistacia lentiscus L., var. Chia, fam. Anacardiaceae 0.01%
Mentha longifolia ssp. petiolata (Greece) 2 90063-99-3 Mentha longifolia (L.) ssp. petiolata (Chemotype II), fam. Lamiaceae 0.01%
Mentha spicata (Greece) Chemotype II Mentha spicata L. (Chemotype II), fam. Lamiaceae (Labiatae) 0.01%
Mentha spicata (Greece) Chemotype IIIa Mentha spicata L. (Chemotype IIIa), fam. Lamiaceae (Labiatae) 0.01%
Mentha spicata (Greece) Chemotype IIIb Mentha spicata L. (Chemotype IIIb), fam. Lamiaceae (Labiatae) 0.02%
Mentha x villosa (Greece) 1 Mentha x villosa Hudson, fam. Lamiaceae (Labiatae) 0.02%
Mentha x villosa (Greece) 2 Mentha x villosa Hudson, fam. Lamiaceae (Labiatae) 0.01%
Mentha x villoso-nervata (Greece) 1 Mentha x villoso-nervata Opiz (M.longifolia L. x M.spicata L.) (Chemot.I) 0.05%
Mentha x villoso-nervata (Greece) 2 Mentha x villoso-nervata Opiz (M.longifolia L. x M.spicata L.) (Chemot.II) 0.01%
Myrtle leaf (Morocco) 1 8008-46-6 Myrtus communis L., fam. Myrtaceae 0.02%
Nutmeg (India) 3 8008-45-5 Myristica fragrans Houtt., fam. Myristicaceae 0.01%
Parsley absolute (Egypt) 8000-68-8 Petroselinum crispum (Miller) A.W. Hill (P. sativum Hoffm.), fam. Apiaceae 3.31%
Parsley seed (Egypt) 8000-68-8 Petroselinum crispum (Miller) A.W. Hill (P. sativum Hoffm.), fam. Apiaceae 0.18%
Pimento (Allspice) 2 8006-77-7 Pimenta dioica (L.) Merr. (P. officinalis Lindl.), fam. Myrtaceae 0.05%
Pinus pinaster (France) 8000-26-8 Pinus pinaster Ait., fam. Pinaceae 0.01%
Douglas fir 1 Pseudotsuga menziesii (Mirbel) Franco, fam. Pinaceae 0.22%
Rosemary (Spain) 3 8000-25-7 Rosmarinus officinalis L., fam. Lamiaceae (Labiatae) 0.05%
Sideritis granatensis Sideritis granatensis (Pau) Rivas-Goday, fam. Lamiaceae (Labiatae) 0.2%
Spike lavender (Spain) 2 8016-78-2 Lavandula latifolia Medikus (L. spica D.C.), fam. Lamiaceae (Labiatae) 0.2%
Tea Tree (Australia) 1 68647-73-4 Melaleuca alternifolia (Maiden et Betche) Cheel, fam. Myrtaceae 0.07%
Tsuga canadensis conifer Tsuga canadensis, fam. Pinaceae 0.03%
Rosa chinensis (headspace), China Rosa chinensis Jacq., fam. Rosaceae 0.56%
Vitex limonifolia leaf Vitex limonifolia Wall., fam. Verbenaceae 0.01%
Cajuput (Vietnam) 2 8008-98-8 Melaleuca cajuputi Powell, var. cajuputi, fam. Myrtaceae 0.2%
Grapefruit (Italy) 1 8016-20-4 Citrus paradisi Macfayden, fam. Rutaceae 0.01%
Pinus canariensis (Spain-Tenerife) Pinus canariensis Sweet ex Sprengel, fam. Pinaceae 0.01%
Satureja parvifolia (Argentina) Satureja parvifolia (Phil.) Epl., fam. Lamiaceae (Labiatae) 0.01%
Teucrium salviastrum (Portugal) Teucrium salviastrum Schreber, fam. Lamiaceae (Lagiatae) 0.02%
Olibanum, Frankincense 8016-36-2 Boswellia frereana Birdwood, fam. Burseraceae 0.1%
Oregano, greek (United Kingdom) 84012-24-8 Origanum vulgare L., fam. Lamiaceae (Labiatae) 0.1%
Tangerine leaf 1a 8008-31-9 Citrus reticulata Blanco, cultivar Tangerine, fam. Rutaceae 1.0%
Tangerine leaf 1b 8008-31-9 Citrus reticulata Blanco, cultivar Tangerine, fam. Rutaceae 0.4%
Mandarin leaf (Petitgrain mandarin.) (China) Citrus reticulata Blanco, fam. Rutaceae 0.33%
Bitter orange leaf (Petitgrain) (China) 2 8014-17-3 Citrus aurantium L., ssp. amara Engl., fam Rutaceae 0.5%
Lavender (France) 8 8000-28-0 Lavandula angustifolia Mill. (L. officinalis Chaix), fam. Lamiaceae 0.07%
Lavender (Bulgaria) 2 8000-28-0 Lavandula angustifolia Mill. (L. officinalis Chaix), fam. Lamiaceae 0.03%
Lavender (Ukraine) 8000-28-0 Lavandula angustifolia Mill., (L. officinalis Chaix), fam. Lamiaceae 0.08%
Lavender (Australia) 8000-28-0 Lavandula angustifolia Mill. (L. officinalis Chaix), fam. Lamiaceae 0.05%
Lavender (Moldova) 8000-28-0 Lavandula angustifolia Mill., (L. officinalis Chaix), fam. Lamiaceae 0.04%
Cistus 8016-26-0 Cistus ladaniferus L. (C. ladanifer L.), fam. Cistaceae 2.82%