Tinuvin

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  • Identifiers

    CAS number
    3896-11-5

    Molecular formula
    C17H18ClN3O

    SMILES
    CC1=CC(=C(C(=C1)N2N=C3C=CC(=CC3=N2)Cl)O)C(C)(C)C

    Safety labels

  • Odor profile

    Fragrance
    Fruity 48.03%
    Musk 40.79%
    Animal 38.4%
    Leathery 31.22%
    Dry 30.34%
    Phenolic 28.55%
    Woody 27.13%
    Floral 25.95%
    Fatty 25.65%
    Burnt 25.32%

     

    Flavor
    Bitter 73.65%
    Very strong 21.27%
    Cedarleaf 21.05%
    Indole 20.99%
    Odorless 20.89%
    Green pepper 20.82%
    Parsley 20.55%
    Flat 20.51%
    Carrot 20.51%
    Eugenol 20.49%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    5.6

    pKa est.
    5.17 (weak acid)

    Molecular weight
    315.8 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    497°C

    Flash point

    • 214.91 ˚C est.

  • Synonyms

    • Tinuvin
    • 2-(2'-Hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole
    • RefChem:570489
    • BUMETRIZOLE
    • 3896-11-5
    • 2-(tert-Butyl)-6-(5-chloro-2H-benzo[d][1,2,3]triazol-2-yl)-4-methylphenol
    • Tinuvin 326
    • 2-(5-Chloro-2-benzotriazolyl)-6-tert-butyl-p-cresol
    • UV-326
    • 2-tert-Butyl-6-(5-chloro-2H-benzotriazol-2-yl)-4-methylphenol
    • Bumetrizol
    • C17H18ClN3O
    • DTXSID9036438
    • MFCD00059707
    • Phenol, 2-(5-chloro-2H-benzotriazol-2-yl)-6-(1,1-dimethylethyl)-4-methyl-
    • 2-tert-Butyl-6-(5-chloro-2H-benzotriazol-2-yl)-p-cresol
    • 2-tert-butyl-6-(5-chlorobenzotriazol-2-yl)-4-methylphenol
    • 7ZF18Q354W
    • 2-tert-Butyl-6-(5-chloro-2H-1,2,3-benzotriazol-2-yl)-4-methylphenol
    • NCGC00166260-01
    • 2-(2'-Hydroxy-3'-t-butyl-5'-methylphenyl)-5-chlorobenzotriazole
    • DTXCID7016438
    • CAS-3896-11-5
    • Bumetrizolum
    • 6-(tert-butyl)-2-(5-chloro(2-hydrobenzotriazol-2-yl))-4-methylphenol
    • Benazol PBKh
    • Lowitite 26
    • UV Absorber-6
    • Tinuvin-326
    • Uvazol 236
    • BUMETRIZOLE [INN]
    • UV-326 (bumetrizole)
    • Bumetrizole (USAN/INN)
    • Bumetrizole [USAN:INN]
    • ChemDiv3_000001
    • Bumetrizol [INN-Spanish]
    • BUMETRIZOLE [USAN]
    • Bumetrizolum [INN-Latin]
    • 2-(5-Chloro-2H-benzotriazol-2-yl)-6-(1,1-dimethylethyl)-4-methylphenol
    • Oprea1_623867
    • SCHEMBL23734
    • UNII-7ZF18Q354W
    • SCHEMBL2501879
    • CHEMBL1880325
    • SCHEMBL29353083
    • HMS1473A01
    • 2-(2-Hydroxy-3-tert-butyl-5-methylphenyl)-5-chlorobenzotriazole
    • MSK15312
    • EINECS 223-445-4
    • Tox21_112379
    • 2-(2-Hydroxy-3-tert-butyl-5-methylphenyl)-5-chloro-2H-benzotriazole
    • 5-chloro-2-(2-hydroxy-3-tert-butyl-5-methylphenyl)-2H-benzotriazole
    • SBB057046
    • AKOS000513688
    • Tox21_112379_1
    • FT34497
    • IDI1_019319
    • NCGC00166260-02
    • NCGC00166260-03
    • AS-73030
    • MSK15312-100
    • H0559
    • NS00004466
    • ST50232783
    • D03174
    • D71031
    • EC 223-445-4
    • F238748
    • SR-01000388207
    • SR-01000388207-1
    • Q27269075
    • 2-tert-butyl-6-(5-chlorobenzotriazol-2-yl)-4-methyl-phenol
    • 2-(2'-hydroxy-3'-t-butyl- 5'-methylphenyl)-5-chlorobenzotriazole
    • 2-(2'-hydroxy-3'-t-butyl-5'-methylphenyl)-5- chlorobenzotriazole
    • 2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazol
    • 2-(2'-hydroxy-3'-tert-butyl-5'-methyphenyl)-5-chlorobenzotriazole
    • 2-(2?-Hydroxy-3?-tert-butyl-5?-methylphenyl)-5-chlorobenzotriazole
    • 2-tert-Butyl-6-(5-chloro-2H-benzotriazol-2-yl)-4-methyl-phenol
    • 2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chloro-benzotriazole
    • 2-(5-Chloro-2H-benzotriazol-2-yl)-6-(1,1-dimethylethyl)-4-methylp- henol
    • 2-tert-Butyl-6-(5-chloro-2H-1,2,3-benzotriazol-2-yl)-4-methylphenol #
    • 2-tert-Butyl-6-(5-chloro-2H-benzotriazol-2-yl)-4-methylphenol, 98%
    • 5-chloro-2-(3-tert-butyl-2-hydroxy-5-methylphenyl)-2H-benzotriazole
    • 2-(3'-TERT-BUTYL-2'-HYDROXY-5'-METHYL- PHENYL)-5-CHLOROBENZOTRIAZOLE
    • 2-(2?-Hydroxy-3?-tert-butyl-5?-methylphenyl)-5-chlorobenzotriazole Solution in Methanol, 100?g/mL
    • 223-445-4
    • 3896-11-5

  • Applications

    Tinuvin (CAS 3896-11-5) is used as a light stabilizer in polymer formulations and coatings, functioning primarily as a UV absorber or a hindered amine light stabilizer (HALS) to suppress photo-oxidative degradation. It is commonly applied in plastics and polymer films to improve weathering resistance, in coatings and inks to extend service life under sunlight, in automotive and electronic components to protect housings and encapsulations, in packaging materials to enhance outdoor durability, and in adhesives and sealants where UV stability is desired. In specialty formulations, it may be used as an additive or intermediate within polymer systems, subject to regulatory requirements and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 26.63
    methanol 21.6
    isopropanol 20.83
    water 0.01
    ethyl acetate 53.31
    n-propanol 28.78
    acetone 73.73
    n-butanol 30.4
    acetonitrile 18.87
    DMF 213.76
    toluene 12.35
    isobutanol 26.16
    1,4-dioxane 52.63
    methyl acetate 58.53
    THF 291.41
    2-butanone 101.32
    n-pentanol 29.13
    sec-butanol 30.42
    n-hexane 0.72
    ethylene glycol 7.53
    NMP 142.38
    cyclohexane 0.43
    DMSO 95.06
    n-butyl acetate 65.84
    n-octanol 28.88
    chloroform 113.5
    n-propyl acetate 53.3
    acetic acid 31.52
    dichloromethane 86.19
    cyclohexanone 103.33
    propylene glycol 20.37
    isopropyl acetate 41.64
    DMAc 187.11
    2-ethoxyethanol 67.1
    isopentanol 32.87
    n-heptane 1.05
    ethyl formate 37.57
    1,2-dichloroethane 51.94
    n-hexanol 41.92
    2-methoxyethanol 102.63
    isobutyl acetate 47.38
    tetrachloromethane 5.17
    n-pentyl acetate 62.75
    transcutol 166.57
    n-heptanol 33.65
    ethylbenzene 9.91
    MIBK 52.45
    2-propoxyethanol 125.58
    tert-butanol 27.62
    MTBE 28.93
    2-butoxyethanol 81.29
    propionic acid 29.43
    o-xylene 7.04
    formic acid 13.35
    diethyl ether 19.45
    m-xylene 10.19
    p-xylene 16.49
    chlorobenzene 34.96
    dimethyl carbonate 39.25
    n-octane 0.97
    formamide 23.85
    cyclopentanone 192.01
    2-pentanone 76.77
    anisole 43.07
    cyclopentyl methyl ether 60.48
    gamma-butyrolactone 175.22
    1-methoxy-2-propanol 103.56
    pyridine 78.54
    3-pentanone 49.19
    furfural 136.02
    n-dodecane 1.17
    diethylene glycol 80.94
    diisopropyl ether 7.02
    tert-amyl alcohol 34.95
    acetylacetone 89.24
    n-hexadecane 1.35
    acetophenone 53.69
    methyl propionate 64.01
    isopentyl acetate 70.44
    trichloroethylene 160.5
    n-nonanol 28.52
    cyclohexanol 24.27
    benzyl alcohol 45.75
    2-ethylhexanol 28.46
    isooctanol 30.83
    dipropyl ether 22.35
    1,2-dichlorobenzene 35.25
    ethyl lactate 43.19
    propylene carbonate 93.59
    n-methylformamide 58.3
    2-pentanol 21.85
    n-pentane 0.43
    1-propoxy-2-propanol 86.57
    1-methoxy-2-propyl acetate 89.45
    2-(2-methoxypropoxy) propanol 79.39
    mesitylene 4.95
    ε-caprolactone 96.26
    p-cymene 11.93
    epichlorohydrin 240.37
    1,1,1-trichloroethane 41.72
    2-aminoethanol 19.67
    morpholine-4-carbaldehyde 144.63
    sulfolane 171.51
    2,2,4-trimethylpentane 0.96
    2-methyltetrahydrofuran 110.85
    n-hexyl acetate 71.04
    isooctane 0.66
    2-(2-butoxyethoxy)ethanol 96.5
    sec-butyl acetate 38.88
    tert-butyl acetate 49.77
    decalin 1.11
    glycerin 32.48
    diglyme 131.2
    acrylic acid 30.37
    isopropyl myristate 28.99
    n-butyric acid 51.2
    acetyl acetate 28.68
    di(2-ethylhexyl) phthalate 37.05
    ethyl propionate 48.15
    nitromethane 83.32
    1,2-diethoxyethane 60.09
    benzonitrile 45.53
    trioctyl phosphate 28.72
    1-bromopropane 27.1
    gamma-valerolactone 212.33
    n-decanol 21.8
    triethyl phosphate 26.06
    4-methyl-2-pentanol 19.68
    propionitrile 29.61
    vinylene carbonate 72.36
    1,1,2-trichlorotrifluoroethane 119.46
    DMS 61.6
    cumene 9.15
    2-octanol 26.94
    2-hexanone 62.76
    octyl acetate 40.29
    limonene 15.26
    1,2-dimethoxyethane 106.98
    ethyl orthosilicate 24.94
    tributyl phosphate 32.29
    diacetone alcohol 80.26
    N,N-dimethylaniline 28.87
    acrylonitrile 45.2
    aniline 27.41
    1,3-propanediol 34.43
    bromobenzene 31.25
    dibromomethane 46.28
    1,1,2,2-tetrachloroethane 111.69
    2-methyl-cyclohexyl acetate 45.52
    tetrabutyl urea 47.06
    diisobutyl methanol 15.79
    2-phenylethanol 59.43
    styrene 11.42
    dioctyl adipate 42.61
    dimethyl sulfate 73.49
    ethyl butyrate 41.81
    methyl lactate 55.97
    butyl lactate 62.57
    diethyl carbonate 26.78
    propanediol butyl ether 75.23
    triethyl orthoformate 32.56
    p-tert-butyltoluene 11.14
    methyl 4-tert-butylbenzoate 61.93
    morpholine 86.54
    tert-butylamine 10.92
    n-dodecanol 15.9
    dimethoxymethane 113.51
    ethylene carbonate 52.54
    cyrene 82.63
    2-ethoxyethyl acetate 85.05
    2-ethylhexyl acetate 55.56
    1,2,4-trichlorobenzene 48.9
    4-methylpyridine 79.83
    dibutyl ether 23.67
    2,6-dimethyl-4-heptanol 15.79
    DEF 72.21
    dimethyl isosorbide 139.31
    tetrachloroethylene 50.71
    eugenol 73.89
    triacetin 64.39
    span 80 66.34
    1,4-butanediol 17.95
    1,1-dichloroethane 51.03
    2-methyl-1-pentanol 34.57
    methyl formate 51.4
    2-methyl-1-butanol 32.99
    n-decane 1.72
    butyronitrile 35.7
    3,7-dimethyl-1-octanol 30.7
    1-chlorooctane 14.37
    1-chlorotetradecane 5.85
    n-nonane 1.42
    undecane 1.39
    tert-butylcyclohexane 1.38
    cyclooctane 0.24
    cyclopentanol 38.97
    tetrahydropyran 53.52
    tert-amyl methyl ether 28.73
    2,5,8-trioxanonane 101.74
    1-hexene 6.39
    2-isopropoxyethanol 57.48
    2,2,2-trifluoroethanol 16.81
    methyl butyrate 65.66

    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