1,3-Dioxolane, 2-methyl-4-phenyl-

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  • Identifiers

    CAS number
    33941-99-0

    Molecular formula
    C10H12O2

    SMILES
    CC1OCC(O1)C2=CC=CC=C2

  • Odor profile

    Fragrance
    Floral 82.88%
    Sweet 59.45%
    Green 48.18%
    Rose 47.62%
    Fruity 46.82%
    Hyacinth 41.65%
    Aromatic 34.94%
    Almond 34.83%
    Fresh 34.8%
    Jasmin 31.93%

     

    Flavor
    Sweet 72.89%
    Bitter 62.23%
    Woody 53.06%
    Floral 39.79%
    Green 36.49%
    Herbal 31.51%
    Spicy 28.64%
    Warm 26.63%
    Naphthalic 25.77%
    Earthy 25.33%

     

    Odor impact est.
    Medium

  • Properties

    XLogP3-AA
    1.8

    pKa est.
    5.72 (weak acid)

    Molecular weight
    164.2 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderately slow

    Boiling point est.
    231°C

    Flash point

    • 88.61 ˚C est.

  • Synonyms

    • 2-Methyl-4-phenyl-1,3-dioxolane
    • 33941-99-0
    • 1,3-Dioxolane, 2-methyl-4-phenyl-
    • EINECS 251-752-3
    • DTXSID00865696
    • SCHEMBL597947
    • DTXCID10814074
    • Acetaldehyde ethyleneglycol acetal 1
    • 2-Methyl-4-phenyl-1,3-dioxolane #
    • (+/-)-2-methyl-4-phenyl-1,3-dioxolane
    • NS00054806
    • 251-752-3

  • Applications

    1,3-Dioxolane, 2-methyl-4-phenyl- (CAS 33941-99-0) is a substituted cyclic acetal used primarily as an intermediate in organic synthesis (often as a carbonyl protecting group), as a solvent or co-solvent in chemical production and laboratory work, and as a fragrance-related ingredient or odorant/fixative in perfumery and cosmetics. It can also function as a processing solvent or diluent in coatings, inks, and adhesives, or as a solvent in cleaning formulations. Its use is subject to regulatory and formulation-specific limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 417.29
    methanol 424.74
    isopropanol 274.61
    water 7.42
    ethyl acetate 253.9
    n-propanol 331.76
    acetone 217.84
    n-butanol 253.29
    acetonitrile 383.02
    DMF 270.91
    toluene 159.82
    isobutanol 212.71
    1,4-dioxane 717.62
    methyl acetate 260.66
    THF 366.2
    2-butanone 195.6
    n-pentanol 182.5
    sec-butanol 209.71
    n-hexane 20.27
    ethylene glycol 242.51
    NMP 183.3
    cyclohexane 55.71
    DMSO 463.58
    n-butyl acetate 108.38
    n-octanol 94.08
    chloroform 1316.04
    n-propyl acetate 118.14
    acetic acid 319.52
    dichloromethane 1045.59
    cyclohexanone 244.53
    propylene glycol 255.64
    isopropyl acetate 114.92
    DMAc 303.66
    2-ethoxyethanol 309.14
    isopentanol 173.35
    n-heptane 24.19
    ethyl formate 157.65
    1,2-dichloroethane 455.11
    n-hexanol 169.2
    2-methoxyethanol 423.12
    isobutyl acetate 84.49
    tetrachloromethane 134.72
    n-pentyl acetate 70.3
    transcutol 679.86
    n-heptanol 80.93
    ethylbenzene 77.73
    MIBK 96.29
    2-propoxyethanol 282.39
    tert-butanol 273.65
    MTBE 160.11
    2-butoxyethanol 143.37
    propionic acid 258.55
    o-xylene 99.53
    formic acid 142.35
    diethyl ether 240.74
    m-xylene 96.97
    p-xylene 99.73
    chlorobenzene 215.96
    dimethyl carbonate 110.79
    n-octane 12.65
    formamide 181.78
    cyclopentanone 229.33
    2-pentanone 141.72
    anisole 191.83
    cyclopentyl methyl ether 174.79
    gamma-butyrolactone 299.14
    1-methoxy-2-propanol 287.75
    pyridine 418.66
    3-pentanone 138.26
    furfural 316.1
    n-dodecane 16.15
    diethylene glycol 293.27
    diisopropyl ether 55.06
    tert-amyl alcohol 172.28
    acetylacetone 178.81
    n-hexadecane 17.77
    acetophenone 156.91
    methyl propionate 200.83
    isopentyl acetate 100.62
    trichloroethylene 724.74
    n-nonanol 85.26
    cyclohexanol 205.13
    benzyl alcohol 173.75
    2-ethylhexanol 89.82
    isooctanol 64.56
    dipropyl ether 113.94
    1,2-dichlorobenzene 188.93
    ethyl lactate 101.29
    propylene carbonate 197.59
    n-methylformamide 191.73
    2-pentanol 138.86
    n-pentane 25.27
    1-propoxy-2-propanol 167.91
    1-methoxy-2-propyl acetate 139.78
    2-(2-methoxypropoxy) propanol 165.22
    mesitylene 63.12
    ε-caprolactone 217.84
    p-cymene 53.32
    epichlorohydrin 396.16
    1,1,1-trichloroethane 385.15
    2-aminoethanol 313.93
    morpholine-4-carbaldehyde 317.6
    sulfolane 300.25
    2,2,4-trimethylpentane 17.09
    2-methyltetrahydrofuran 259.29
    n-hexyl acetate 119.66
    isooctane 13.25
    2-(2-butoxyethoxy)ethanol 220.27
    sec-butyl acetate 82.23
    tert-butyl acetate 109.3
    decalin 28.4
    glycerin 286.77
    diglyme 389.83
    acrylic acid 237.23
    isopropyl myristate 64.15
    n-butyric acid 254.51
    acetyl acetate 172.62
    di(2-ethylhexyl) phthalate 67.01
    ethyl propionate 116.85
    nitromethane 380.18
    1,2-diethoxyethane 178.32
    benzonitrile 190.41
    trioctyl phosphate 45.68
    1-bromopropane 252.31
    gamma-valerolactone 311.2
    n-decanol 68.47
    triethyl phosphate 72.68
    4-methyl-2-pentanol 78.22
    propionitrile 264.75
    vinylene carbonate 217.29
    1,1,2-trichlorotrifluoroethane 305.32
    DMS 130.07
    cumene 59.72
    2-octanol 53.63
    2-hexanone 110.2
    octyl acetate 77.81
    limonene 67.84
    1,2-dimethoxyethane 350.41
    ethyl orthosilicate 67.98
    tributyl phosphate 57.43
    diacetone alcohol 139.92
    N,N-dimethylaniline 127.72
    acrylonitrile 313.53
    aniline 216.81
    1,3-propanediol 281.97
    bromobenzene 237.59
    dibromomethane 635.79
    1,1,2,2-tetrachloroethane 599.77
    2-methyl-cyclohexyl acetate 94.55
    tetrabutyl urea 71.89
    diisobutyl methanol 58.34
    2-phenylethanol 127.72
    styrene 107.13
    dioctyl adipate 91.33
    dimethyl sulfate 150.56
    ethyl butyrate 104.7
    methyl lactate 133.08
    butyl lactate 75.27
    diethyl carbonate 92.91
    propanediol butyl ether 153.25
    triethyl orthoformate 83.78
    p-tert-butyltoluene 51.69
    methyl 4-tert-butylbenzoate 127.39
    morpholine 575.73
    tert-butylamine 176.32
    n-dodecanol 57.93
    dimethoxymethane 238.22
    ethylene carbonate 186.81
    cyrene 146.7
    2-ethoxyethyl acetate 111.33
    2-ethylhexyl acetate 79.55
    1,2,4-trichlorobenzene 217.36
    4-methylpyridine 290.21
    dibutyl ether 94.98
    2,6-dimethyl-4-heptanol 58.34
    DEF 191.86
    dimethyl isosorbide 205.28
    tetrachloroethylene 384.06
    eugenol 137.75
    triacetin 150.92
    span 80 126.59
    1,4-butanediol 156.74
    1,1-dichloroethane 464.62
    2-methyl-1-pentanol 131.74
    methyl formate 145.18
    2-methyl-1-butanol 164.35
    n-decane 22.61
    butyronitrile 220.56
    3,7-dimethyl-1-octanol 88.07
    1-chlorooctane 66.97
    1-chlorotetradecane 36.58
    n-nonane 20.76
    undecane 18.55
    tert-butylcyclohexane 25.38
    cyclooctane 19.22
    cyclopentanol 189.82
    tetrahydropyran 423.52
    tert-amyl methyl ether 112.32
    2,5,8-trioxanonane 300.05
    1-hexene 78.25
    2-isopropoxyethanol 192.15
    2,2,2-trifluoroethanol 142.19
    methyl butyrate 139.1

    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