Avobenzone

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  • Identifiers

    CAS number
    70356-09-1

    Molecular formula
    C20H22O3

    SMILES
    CC(C)(C)C1=CC=C(C=C1)C(=O)CC(=O)C2=CC=C(C=C2)OC

    Safety labels

  • Odor profile

    Fragrance
    Floral 56.45%
    Sweet 53.13%
    Balsamic 46.45%
    Powdery 42.98%
    Woody 37.29%
    Musk 36.75%
    Dry 36.17%
    Honey 32.9%
    Animal 31.07%
    Fruity 30.6%

     

    Flavor
    Herbal 41.1%
    Bitter 38.42%
    Woody 29.66%
    Balsam 26.82%
    Powdery 21.44%
    Sweet 20.42%
    Lovage 20.3%
    Faint 20.0%
    Valerian 19.89%
    Ethyl benzoate 19.88%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    4.8

    pKa est.
    8.06 (weak base)

    Molecular weight
    310.4 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    446°C

    Melting point expt.

    • 83.5 °C

    Flash point

    • 186.87 ˚C est.

    Solubility expt.

    • Solubility at 20 °C: glycerin, 0.1% w/w; ethanol and isopropanol, 2% w/w
    • Water-insoluble, soluble in isopropanol, decyl oleate, capric/caprylic triglyceride, castor oil.

  • Synonyms

    • Avobenzone
    • 70356-09-1
    • Parsol 1789
    • Butyl methoxydibenzoylmethane
    • Escalol 517
    • Eusolex 9020
    • Avobenzona
    • NeoHeliopan 357
    • Avobenzonum
    • 4-TERT-BUTYL-4'-METHOXYDIBENZOYLMETHANE
    • G63QQF2NOX
    • 1,3-Propanedione, 1-[4-(1,1-dimethylethyl)phenyl]-3-(4-methoxyphenyl)-
    • NSC-758680
    • 1-(p-tert-Butylphenyl)-3-(p-methoxyphenyl)-1,3-propanedione
    • 1,3-Propanedione, 1-(4-(1,1-dimethylethyl)phenyl)-3-(4-methoxyphenyl)-
    • 1-(4-(1,1-Dimethylethyl)phenyl)-3-(4-methoxyphenyl)-1,3-propanedione
    • 1-[4-(1,1-dimethylethyl)phenyl]-3-(4-methoxyphenyl)-1,3-propanedione
    • parsol-1789
    • BMDBM cpd
    • butyl-methoxydibenzoylmethane
    • help me
    • Ponds Clarant B3
    • Ponds Vao-B3
    • Duane Reade Sunscreen
    • Dynamic Skin Recovery
    • RefChem:5574
    • Exchange Select Sunscreen
    • GlyTouCan:G58983DB
    • Duane Reade Sport Sunscreen
    • Anti-Dark Moisturizing Cream
    • Duane Reade Sports Sunscreen
    • Exchange Select Baby Sunscreen
    • Exchange Select Kids Sunscreen
    • Duane Reade Oil Free Sunscreen
    • Duane Reade Sunscreen SPF 30
    • Duane Reade Sunscreen SPF 50
    • Duane Reade Sunscreen SPF 70
    • Dynamic Skin Recovery SPF 50
    • Exchange Select Sunscreen SPF 50
    • Duane Reade Baby SunscreenSPF 50
    • G58983DB
    • Duane Reade Sport Sunscreen SPF 50
    • LEADERS SUNBUDDY ALL OVER SUN
    • Duane Reade Sports Sunscreen SPF 30
    • Duane Reade Sports Sunscreen SPF 50
    • Exchange Select Baby Sunscreen SPF 50
    • Exchange Select Kids Sunscreen SPF 50
    • Duane Reade Oil Free Sunscreen SPF 30
    • Duane Reade Prevail Moisturizing Sunscreen
    • Duane Reade Baby SunscreenSPF 50 SPF 50
    • Coppertone Pure and Simple Kids Suncreen SPF 50
    • Duane Reade Prevail Moisturizing Sunscreen SPF 80
    • help me broad spectrum spf 30 sunscreen retinol day treatment lotion
    • 1-(4-tert-butylphenyl)-3-(4-methoxyphenyl)propane-1,3-dione
    • 4-tert-Butyl-4'-methoxy-dibenzoylmethane
    • 1-(4-(tert-Butyl)phenyl)-3-(4-methoxyphenyl)propane-1,3-dione
    • 1-(4-tert-Butylphenyl)-3-(4-methoxyphenyl)-1,3-propanedione
    • MFCD00210252
    • 1-(4-Methoxyphenyl)-3-(4-tert-butylphenyl)-1,3-propanedione
    • DTXSID9044829
    • NCGC00095112-01
    • Parsol A
    • DTXCID7024829
    • Avobenzonum [INN-Latin]
    • Avobenzona [INN-Spanish]
    • SMR001562107
    • CAS-70356-09-1
    • HSDB 7423
    • EINECS 274-581-6
    • UNII-G63QQF2NOX
    • Avobenzone [USAN:USP:INN]
    • Avobenzone (Standard)
    • 4-methoxy-4'-tert-butyldibenzoylmethane
    • Spectrum_001715
    • AVOBENZONE [MI]
    • SpecPlus_000764
    • Avobenzone (USP/INN)
    • AVOBENZONE [INN]
    • Spectrum2_001663
    • Spectrum3_000990
    • Spectrum4_001116
    • Spectrum5_001358
    • AVOBENZONE [HSDB]
    • AVOBENZONE [USAN]
    • Avobenzone(Parsol 1789)
    • EC 274-581-6
    • AVOBENZONE [MART.]
    • But ylmethoxydibenzoylmethane
    • AVOBENZONE [USP-RS]
    • AVOBENZONE [WHO-DD]
    • Avobenzone (Parsol 1789)
    • SCHEMBL15650
    • BSPBio_002659
    • KBioGR_001592
    • KBioSS_002195
    • MLS002695918
    • MLS006010050
    • BIDD:ER0196
    • DivK1c_006860
    • SPECTRUM1504190
    • SPBio_001845
    • Avobenzone, analytical standard
    • orb1310377
    • SCHEMBL9403511
    • AVOBENZONE [ORANGE BOOK]
    • CHEMBL1200522
    • HY-B0316R
    • KBio1_001804
    • KBio2_002195
    • KBio2_004763
    • KBio2_007331
    • KBio3_001879
    • AVOBENZONE [USP IMPURITY]
    • MSK3417
    • MSK3417-100GMW
    • CHEBI:134751
    • AVOBENZONE [USP MONOGRAPH]
    • GLXC-07780
    • HMS1922F17
    • HMS2093C04
    • HMS3655C22
    • HMS3715F14
    • HMS5080B03
    • MSK3417-1000GMW
    • Pharmakon1600-01504190
    • 1-[4-(tert-Butyl)phenyl]-3-(4-methoxyphenyl)-1,3-propanedione
    • HY-B0316
    • 70356-09-1

  • Applications

    Avobenzone (CAS 70356-09-1) is primarily used as a UVA ultraviolet absorber in cosmetics and personal care, notably in sunscreen formulations and other skin-care products with SPF. It is also employed as a UV-stabilizing additive for plastics and coatings to mitigate photodegradation and light-induced color fading, and it can be found in inks and polymer matrices. In adhesives and sealants, it may function as a UV-protective component to extend service life of bonded joints. It is sometimes incorporated in packaging materials and electronic components to protect contents and housings from UV exposure. Use is subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 44.69
    methanol 50.1
    isopropanol 25.55
    water 0.05
    ethyl acetate 177.2
    n-propanol 44.51
    acetone 137.54
    n-butanol 31.86
    acetonitrile 93.18
    DMF 424.53
    toluene 68.75
    isobutanol 24.21
    1,4-dioxane 286.42
    methyl acetate 195.64
    THF 558.34
    2-butanone 170.46
    n-pentanol 24.54
    sec-butanol 28.65
    n-hexane 1.43
    ethylene glycol 9.79
    NMP 321.73
    cyclohexane 2.75
    DMSO 263.58
    n-butyl acetate 65.33
    n-octanol 6.22
    chloroform 868.13
    n-propyl acetate 79.68
    acetic acid 117.08
    dichloromethane 720.59
    cyclohexanone 183.39
    propylene glycol 24.45
    isopropyl acetate 108.71
    DMAc 615.79
    2-ethoxyethanol 108.31
    isopentanol 25.91
    n-heptane 0.96
    ethyl formate 66.04
    1,2-dichloroethane 414.54
    n-hexanol 19.72
    2-methoxyethanol 174.41
    isobutyl acetate 49.06
    tetrachloromethane 30.26
    n-pentyl acetate 27.38
    transcutol 517.98
    n-heptanol 8.93
    ethylbenzene 30.61
    MIBK 75.9
    2-propoxyethanol 108.95
    tert-butanol 42.74
    MTBE 73.96
    2-butoxyethanol 44.41
    propionic acid 71.52
    o-xylene 35.0
    formic acid 45.39
    diethyl ether 102.94
    m-xylene 33.39
    p-xylene 34.32
    chlorobenzene 146.54
    dimethyl carbonate 153.57
    n-octane 0.34
    formamide 124.92
    cyclopentanone 323.48
    2-pentanone 116.9
    anisole 148.93
    cyclopentyl methyl ether 149.27
    gamma-butyrolactone 385.8
    1-methoxy-2-propanol 140.54
    pyridine 229.61
    3-pentanone 126.33
    furfural 296.52
    n-dodecane 0.33
    diethylene glycol 81.04
    diisopropyl ether 21.64
    tert-amyl alcohol 38.24
    acetylacetone 240.1
    n-hexadecane 0.4
    acetophenone 129.68
    methyl propionate 199.38
    isopentyl acetate 65.74
    trichloroethylene 912.86
    n-nonanol 7.18
    cyclohexanol 31.11
    benzyl alcohol 75.99
    2-ethylhexanol 13.47
    isooctanol 8.74
    dipropyl ether 37.88
    1,2-dichlorobenzene 153.22
    ethyl lactate 49.05
    propylene carbonate 167.64
    n-methylformamide 150.59
    2-pentanol 19.34
    n-pentane 1.1
    1-propoxy-2-propanol 69.73
    1-methoxy-2-propyl acetate 163.38
    2-(2-methoxypropoxy) propanol 89.51
    mesitylene 17.02
    ε-caprolactone 179.22
    p-cymene 13.93
    epichlorohydrin 645.38
    1,1,1-trichloroethane 262.24
    2-aminoethanol 31.32
    morpholine-4-carbaldehyde 389.22
    sulfolane 377.33
    2,2,4-trimethylpentane 1.61
    2-methyltetrahydrofuran 227.91
    n-hexyl acetate 35.42
    isooctane 0.99
    2-(2-butoxyethoxy)ethanol 99.4
    sec-butyl acetate 64.7
    tert-butyl acetate 136.56
    decalin 2.85
    glycerin 46.61
    diglyme 266.97
    acrylic acid 80.36
    isopropyl myristate 15.45
    n-butyric acid 78.05
    acetyl acetate 141.88
    di(2-ethylhexyl) phthalate 20.72
    ethyl propionate 97.31
    nitromethane 428.39
    1,2-diethoxyethane 118.94
    benzonitrile 75.0
    trioctyl phosphate 9.99
    1-bromopropane 117.77
    gamma-valerolactone 387.31
    n-decanol 4.92
    triethyl phosphate 44.92
    4-methyl-2-pentanol 14.41
    propionitrile 78.55
    vinylene carbonate 167.08
    1,1,2-trichlorotrifluoroethane 365.43
    DMS 110.93
    cumene 17.81
    2-octanol 4.71
    2-hexanone 67.92
    octyl acetate 18.13
    limonene 17.81
    1,2-dimethoxyethane 218.92
    ethyl orthosilicate 40.03
    tributyl phosphate 17.92
    diacetone alcohol 119.4
    N,N-dimethylaniline 85.13
    acrylonitrile 123.34
    aniline 105.59
    1,3-propanediol 43.84
    bromobenzene 156.23
    dibromomethane 339.5
    1,1,2,2-tetrachloroethane 722.26
    2-methyl-cyclohexyl acetate 59.17
    tetrabutyl urea 23.58
    diisobutyl methanol 11.59
    2-phenylethanol 61.56
    styrene 46.62
    dioctyl adipate 39.25
    dimethyl sulfate 271.44
    ethyl butyrate 69.74
    methyl lactate 90.0
    butyl lactate 31.48
    diethyl carbonate 58.92
    propanediol butyl ether 35.75
    triethyl orthoformate 58.35
    p-tert-butyltoluene 14.32
    methyl 4-tert-butylbenzoate 71.37
    morpholine 334.14
    tert-butylamine 19.56
    n-dodecanol 3.65
    dimethoxymethane 347.49
    ethylene carbonate 120.02
    cyrene 107.36
    2-ethoxyethyl acetate 84.41
    2-ethylhexyl acetate 49.16
    1,2,4-trichlorobenzene 201.08
    4-methylpyridine 204.53
    dibutyl ether 18.05
    2,6-dimethyl-4-heptanol 11.59
    DEF 176.42
    dimethyl isosorbide 211.74
    tetrachloroethylene 303.94
    eugenol 63.84
    triacetin 92.27
    span 80 47.93
    1,4-butanediol 14.86
    1,1-dichloroethane 297.27
    2-methyl-1-pentanol 24.03
    methyl formate 119.89
    2-methyl-1-butanol 26.5
    n-decane 0.6
    butyronitrile 50.76
    3,7-dimethyl-1-octanol 10.77
    1-chlorooctane 5.61
    1-chlorotetradecane 2.1
    n-nonane 0.49
    undecane 0.42
    tert-butylcyclohexane 2.47
    cyclooctane 0.89
    cyclopentanol 41.1
    tetrahydropyran 180.55
    tert-amyl methyl ether 61.19
    2,5,8-trioxanonane 172.58
    1-hexene 10.35
    2-isopropoxyethanol 69.98
    2,2,2-trifluoroethanol 60.78
    methyl butyrate 99.15

    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