Benzylidene camphor sulfonic acid

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  • Identifiers

    CAS number
    56039-58-8

    Molecular formula
    C17H20O4S

    SMILES
    CC1(C\2CCC1(C(=O)/C2=C/C3=CC=C(C=C3)S(=O)(=O)O)C)C

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Odorless 56.5%
    Mint 25.06%
    Woody 22.76%
    Cooling 22.59%
    Herbal 22.34%
    Green 21.01%
    Spicy 19.5%
    Balsamic 18.65%
    Fresh 17.86%
    Dry 17.56%

     

    Flavor
    Bitter 87.19%
    Odorless 20.83%
    Cedarleaf 19.79%
    Nitrile 19.6%
    Lovage 19.26%
    Ripe apricot 18.69%
    Heather 18.64%
    Red fruit 18.63%
    Broom 18.6%
    Genet 18.39%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    2.9

    pKa est.
    6.35 (neutral)

    Molecular weight
    320.4 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    556°C

    Flash point

    • 198.24 ˚C est.

  • Synonyms

    • MEXORYL SL
    • BG521Q2MGT
    • 4'-sulfo-3-benzylidenecamphor
    • Benzylidene Camphor Sulfonic Acid
    • 56039-58-8
    • P-((2-OXO-3-BORNYLIDENE)METHYL)BENZENESULFONIC ACID
    • Benzenesulfonic acid, 4-((4,7,7-trimethyl-3-oxobicyclo(2.2.1)hept-2-ylidene)methyl)-
    • UNII-BG521Q2MGT
    • RefChem:199789
    • 4-((4,7,7-Trimethyl-3-oxo-bicyclo(2.2.2)hept-2-ylidene)methyl)benzenesulfonic acid
    • (+-)-BENZYLIDENE CAMPHOR SULFONIC ACID
    • BENZYLIDENE CAMPHOR SULFONIC ACID [INCI]
    • BENZYLIDENE CAMPHOR SULFONIC ACID, (+-)-
    • 4-((4,7,7-Trimethyl-3-oxobicyclo(2.2.1)hept-2-ylidene)methyl)benzenesulfonic acid
    • SCHEMBL8404837
    • (+/-)-BENZYLIDENE CAMPHOR SULFONIC ACID
    • BENZYLIDENE CAMPHOR SULFONIC ACID, (+/-)-
    • Q27274650
    • 56039-58-8

  • Applications

    Benzylidene camphor sulfonic acid (CAS 56039-58-8) is primarily used as a UV-absorbing filter in cosmetics and personal care formulations, helping to provide broad-spectrum protection in sunscreens and light-stable products. It is also employed as a UV stabilizer/additive in coatings and inks to reduce photodegradation and color fading, particularly in water-based systems due to its sulfonic acid group. In polymers and plastics, it can function as a UV stabilizer to improve outdoor durability and limit yellowing. Additionally, it is used as an intermediate in the synthesis of other camphor sulfonic acid–based UV absorbers and related specialty chemicals, contributing to the production of UV-protective additives.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 48.01
    methanol 49.0
    isopropanol 45.66
    water 0.14
    ethyl acetate 40.02
    n-propanol 47.26
    acetone 88.4
    n-butanol 35.5
    acetonitrile 32.09
    DMF 340.24
    toluene 14.74
    isobutanol 21.43
    1,4-dioxane 132.23
    methyl acetate 54.92
    THF 204.66
    2-butanone 95.93
    n-pentanol 19.49
    sec-butanol 35.74
    n-hexane 0.21
    ethylene glycol 13.24
    NMP 61.2
    cyclohexane 0.91
    DMSO 69.97
    n-butyl acetate 25.86
    n-octanol 7.85
    chloroform 78.0
    n-propyl acetate 29.04
    acetic acid 35.85
    dichloromethane 41.41
    cyclohexanone 92.69
    propylene glycol 35.33
    isopropyl acetate 33.09
    DMAc 195.63
    2-ethoxyethanol 74.46
    isopentanol 23.08
    n-heptane 0.44
    ethyl formate 21.13
    1,2-dichloroethane 23.29
    n-hexanol 24.95
    2-methoxyethanol 172.9
    isobutyl acetate 17.8
    tetrachloromethane 4.01
    n-pentyl acetate 21.14
    transcutol 145.27
    n-heptanol 14.65
    ethylbenzene 6.11
    MIBK 35.68
    2-propoxyethanol 104.92
    tert-butanol 35.02
    MTBE 18.76
    2-butoxyethanol 50.66
    propionic acid 29.78
    o-xylene 7.36
    formic acid 23.42
    diethyl ether 23.88
    m-xylene 9.52
    p-xylene 10.66
    chlorobenzene 15.99
    dimethyl carbonate 39.03
    n-octane 0.28
    formamide 97.76
    cyclopentanone 128.42
    2-pentanone 62.59
    anisole 37.83
    cyclopentyl methyl ether 29.51
    gamma-butyrolactone 87.18
    1-methoxy-2-propanol 165.98
    pyridine 81.24
    3-pentanone 41.05
    furfural 74.15
    n-dodecane 0.28
    diethylene glycol 83.15
    diisopropyl ether 5.25
    tert-amyl alcohol 26.42
    acetylacetone 84.54
    n-hexadecane 0.34
    acetophenone 36.12
    methyl propionate 46.93
    isopentyl acetate 23.43
    trichloroethylene 75.26
    n-nonanol 9.29
    cyclohexanol 23.42
    benzyl alcohol 31.73
    2-ethylhexanol 10.0
    isooctanol 11.43
    dipropyl ether 12.0
    1,2-dichlorobenzene 14.89
    ethyl lactate 26.71
    propylene carbonate 36.83
    n-methylformamide 91.85
    2-pentanol 21.86
    n-pentane 0.35
    1-propoxy-2-propanol 69.04
    1-methoxy-2-propyl acetate 58.77
    2-(2-methoxypropoxy) propanol 42.54
    mesitylene 5.34
    ε-caprolactone 57.26
    p-cymene 4.98
    epichlorohydrin 97.32
    1,1,1-trichloroethane 19.7
    2-aminoethanol 38.78
    morpholine-4-carbaldehyde 147.51
    sulfolane 63.08
    2,2,4-trimethylpentane 0.29
    2-methyltetrahydrofuran 49.73
    n-hexyl acetate 20.78
    isooctane 0.32
    2-(2-butoxyethoxy)ethanol 62.02
    sec-butyl acetate 21.55
    tert-butyl acetate 39.19
    decalin 0.51
    glycerin 59.24
    diglyme 113.49
    acrylic acid 28.15
    isopropyl myristate 9.06
    n-butyric acid 38.2
    acetyl acetate 28.26
    di(2-ethylhexyl) phthalate 12.24
    ethyl propionate 25.61
    nitromethane 113.12
    1,2-diethoxyethane 37.68
    benzonitrile 27.28
    trioctyl phosphate 7.66
    1-bromopropane 9.53
    gamma-valerolactone 199.8
    n-decanol 6.57
    triethyl phosphate 10.41
    4-methyl-2-pentanol 13.04
    propionitrile 30.63
    vinylene carbonate 41.27
    1,1,2-trichlorotrifluoroethane 75.54
    DMS 30.36
    cumene 4.23
    2-octanol 8.36
    2-hexanone 38.05
    octyl acetate 11.88
    limonene 5.5
    1,2-dimethoxyethane 120.83
    ethyl orthosilicate 10.4
    tributyl phosphate 8.4
    diacetone alcohol 68.16
    N,N-dimethylaniline 21.04
    acrylonitrile 47.01
    aniline 30.69
    1,3-propanediol 65.77
    bromobenzene 13.26
    dibromomethane 21.4
    1,1,2,2-tetrachloroethane 60.88
    2-methyl-cyclohexyl acetate 20.1
    tetrabutyl urea 14.33
    diisobutyl methanol 7.97
    2-phenylethanol 40.73
    styrene 8.04
    dioctyl adipate 15.07
    dimethyl sulfate 42.91
    ethyl butyrate 18.63
    methyl lactate 52.84
    butyl lactate 27.18
    diethyl carbonate 12.77
    propanediol butyl ether 40.98
    triethyl orthoformate 16.52
    p-tert-butyltoluene 5.24
    methyl 4-tert-butylbenzoate 31.26
    morpholine 161.53
    tert-butylamine 12.56
    n-dodecanol 4.57
    dimethoxymethane 169.38
    ethylene carbonate 32.0
    cyrene 47.1
    2-ethoxyethyl acetate 43.41
    2-ethylhexyl acetate 17.03
    1,2,4-trichlorobenzene 20.3
    4-methylpyridine 62.3
    dibutyl ether 7.49
    2,6-dimethyl-4-heptanol 7.97
    DEF 60.57
    dimethyl isosorbide 69.74
    tetrachloroethylene 28.83
    eugenol 43.77
    triacetin 30.78
    span 80 32.47
    1,4-butanediol 19.55
    1,1-dichloroethane 25.14
    2-methyl-1-pentanol 13.95
    methyl formate 54.13
    2-methyl-1-butanol 18.57
    n-decane 0.49
    butyronitrile 24.79
    3,7-dimethyl-1-octanol 8.44
    1-chlorooctane 2.66
    1-chlorotetradecane 1.17
    n-nonane 0.37
    undecane 0.35
    tert-butylcyclohexane 0.44
    cyclooctane 0.3
    cyclopentanol 29.21
    tetrahydropyran 68.92
    tert-amyl methyl ether 13.48
    2,5,8-trioxanonane 73.04
    1-hexene 1.93
    2-isopropoxyethanol 44.0
    2,2,2-trifluoroethanol 21.67
    methyl butyrate 34.08

    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