Basic Blue 41

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  • Identifiers

    CAS number
    12270-13-2

    Molecular formula
    C20H26N4O6S2

    SMILES
    CCN(CCO)C1=CC=C(C=C1)N=NC2=[N+](C3=C(S2)C=C(C=C3)OC)C.COS(=O)(=O)[O-]

    Safety labels

    Corrosive
    Corrosive

    Irritant
    Irritant

    Health Hazard
    Health

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Roasted 40.5%
    Meaty 40.45%
    Savory 31.79%
    Odorless 29.35%
    Grape 29.18%
    Cooked 28.89%
    Burnt 25.11%
    Nutty 23.27%
    Animal 22.88%
    Sweet 21.21%

     

    Flavor
    Bitter 74.72%
    Odorless 33.51%
    Bland 24.7%
    Mild 24.05%
    Sweet-like 20.82%
    Cedarleaf 19.87%
    Nitrile 19.87%
    Orange flower 19.8%
    Scallion 19.7%
    Bread crust 19.46%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    7.15 (neutral)

    Molecular weight
    482.6 g/mol

    Flash point

    • 240.34 ˚C est.

  • Synonyms

    • Basic blue 41
    • 12270-13-2
    • C.I. Basic Blue 41
    • CI Basic Blue 41
    • 1ECX0J387P
    • ANILAN BLUE GRL
    • BB41 dye
    • BASACRYL BLUE X 3GL
    • DTXSID3051624
    • Benzothiazolium, 2-(2-(4-(ethyl(2-hydroxyethyl)amino)phenyl)diazenyl)-6-methoxy-3-methyl-, methyl sulfate (1:1)
    • RefChem:116612
    • DTXCID4030176
    • 235-546-0
    • C.I.Basic Blue 41
    • MFCD00013334
    • 2-[N-ethyl-4-[(6-methoxy-3-methyl-1,3-benzothiazol-3-ium-2-yl)diazenyl]anilino]ethanol;methyl sulfate
    • 2-((4-(Ethyl(2-hydroxyethyl)amino)phenyl)diazenyl)-6-methoxy-3-methylbenzo[d]thiazol-3-ium methyl sulfate
    • Benzothiazolium, 2-((4-(ethyl(2-hydroxyethyl)amino)phenyl)azo)-6-methoxy-3-methyl-, methyl sulfate (salt)
    • UNII-1ECX0J387P
    • BasicBlue
    • Basic Blue
    • C20H26N4O6S2
    • Basic Blue 41; Benzothiazolium, 2-[2-[4-[ethyl(2-hydroxyethyl)amino]phenyl]diazenyl]-6-methoxy-3-methyl-, methyl sulfate (1:1) (ACI); Benzothiazolium, 2-[[4-[ethyl(2-hydroxyethyl)amino]phenyl]azo]-6-methoxy-3-methyl-, methyl sulfate (salt) (9CI); C.I. Basic Blue 41 (8CI
    • EINECS 235-546-0
    • Basic Blue 41. tech.
    • Basic blue 41 - Technical
    • SCHEMBL94760
    • SCHEMBL110712
    • BB41
    • CHEMBL259143
    • SCHEMBL3272019
    • SCHEMBL29366785
    • MHOFGBJTSNWTDT-UHFFFAOYSA-M
    • HY-D0492
    • Basic Blue 41, Dye content 40 %
    • AKOS015895000
    • AKOS024386560
    • FB33693
    • CI 11154
    • Ethanol, 2-(ethyl(4-((6-methoxy-3-methyl-2-benzothiazolium)azo)phenyl)amino)-, methyl sulfate
    • CS-0010584
    • NS00013377
    • NS00086300
    • ST51038180
    • F77639
    • Q27252322
    • 2-((4-(ETHYL(2-HYDROXYETHYL)AMINO)PHENYL)AZO)-6-METHOXY-3-METHYLBENZOTHIAZOLIUM METHYL SULFATE
    • 2-((4-(Ethyl(2-hydroxyethyl)amino)phenyl)azo)-6-methoxy-3-methylbenzothiazolium methyl sulphate
    • 2-({4-[Ethyl(2-hydroxyethyl)amino]phenyl}diazenyl)-6-methoxy-3-methyl-1,3-benzothiazol-3-ium methyl sulfate
    • 2-(ethyl{4-[(6-methoxy-3-methylbenzothiazol-2-yl)diazenyl]phenyl}amino)ethan-1 -ol, methyl hydroxysulfonate
    • 2-[N-ethyl-4-[(6-methoxy-3-methyl-1,3-benzothiazol-3-ium-2-yl)azo]anilino]ethanol;methyl sulfate
    • 2-[N-ethyl-4-[(6-methoxy-3-methyl-1,3-benzothiazol-3-ium-2-yl)diazenyl]anilino]ethanol,methyl sulfate
    • 12270-13-2

  • Applications

    Basic Blue 41 (CAS 12270-13-2) is a cationic dye used as a colorant in textiles (notably on protein fibers such as wool and silk and some synthetic fibers), printing inks and coatings, dyeing leather and paper, and it is evaluated for colorant use in plastics and polymer formulations.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 13.11
    methanol 19.24
    isopropanol 7.22
    water 0.16
    ethyl acetate 18.0
    n-propanol 13.04
    acetone 27.68
    n-butanol 11.43
    acetonitrile 11.89
    DMF 112.87
    toluene 5.16
    isobutanol 9.04
    1,4-dioxane 40.93
    methyl acetate 28.65
    THF 91.99
    2-butanone 34.03
    n-pentanol 10.83
    sec-butanol 9.54
    n-hexane 0.25
    ethylene glycol 7.7
    NMP 76.06
    cyclohexane 0.74
    DMSO 132.14
    n-butyl acetate 10.63
    n-octanol 2.76
    chloroform 143.78
    n-propyl acetate 15.33
    acetic acid 47.92
    dichloromethane 159.76
    cyclohexanone 57.04
    propylene glycol 7.24
    isopropyl acetate 8.72
    DMAc 161.08
    2-ethoxyethanol 45.08
    isopentanol 9.19
    n-heptane 0.33
    ethyl formate 20.63
    1,2-dichloroethane 66.31
    n-hexanol 6.16
    2-methoxyethanol 62.21
    isobutyl acetate 9.38
    tetrachloromethane 8.11
    n-pentyl acetate 9.41
    transcutol 62.07
    n-heptanol 4.75
    ethylbenzene 2.77
    MIBK 8.84
    2-propoxyethanol 31.56
    tert-butanol 6.17
    MTBE 5.75
    2-butoxyethanol 20.07
    propionic acid 18.99
    o-xylene 3.01
    formic acid 39.14
    diethyl ether 7.54
    m-xylene 2.5
    p-xylene 4.74
    chlorobenzene 17.27
    dimethyl carbonate 21.75
    n-octane 0.19
    formamide 59.84
    cyclopentanone 69.56
    2-pentanone 17.57
    anisole 12.12
    cyclopentyl methyl ether 16.71
    gamma-butyrolactone 82.82
    1-methoxy-2-propanol 29.88
    pyridine 48.66
    3-pentanone 19.13
    furfural 84.34
    n-dodecane 0.19
    diethylene glycol 34.96
    diisopropyl ether 1.55
    tert-amyl alcohol 8.03
    acetylacetone 26.57
    n-hexadecane 0.22
    acetophenone 20.26
    methyl propionate 24.48
    isopentyl acetate 10.27
    trichloroethylene 164.95
    n-nonanol 3.47
    cyclohexanol 11.88
    benzyl alcohol 18.78
    2-ethylhexanol 4.34
    isooctanol 4.12
    dipropyl ether 5.12
    1,2-dichlorobenzene 18.82
    ethyl lactate 13.81
    propylene carbonate 36.11
    n-methylformamide 44.22
    2-pentanol 5.13
    n-pentane 0.23
    1-propoxy-2-propanol 16.52
    1-methoxy-2-propyl acetate 16.67
    2-(2-methoxypropoxy) propanol 21.93
    mesitylene 1.33
    ε-caprolactone 46.74
    p-cymene 2.24
    epichlorohydrin 134.59
    1,1,1-trichloroethane 31.29
    2-aminoethanol 14.24
    morpholine-4-carbaldehyde 88.82
    sulfolane 99.59
    2,2,4-trimethylpentane 0.24
    2-methyltetrahydrofuran 33.75
    n-hexyl acetate 8.44
    isooctane 0.1
    2-(2-butoxyethoxy)ethanol 25.79
    sec-butyl acetate 8.87
    tert-butyl acetate 7.81
    decalin 0.42
    glycerin 21.08
    diglyme 53.8
    acrylic acid 25.3
    isopropyl myristate 3.96
    n-butyric acid 23.83
    acetyl acetate 14.85
    di(2-ethylhexyl) phthalate 8.18
    ethyl propionate 13.7
    nitromethane 96.45
    1,2-diethoxyethane 17.67
    benzonitrile 17.02
    trioctyl phosphate 4.72
    1-bromopropane 15.97
    gamma-valerolactone 111.36
    n-decanol 2.69
    triethyl phosphate 10.29
    4-methyl-2-pentanol 3.14
    propionitrile 13.36
    vinylene carbonate 41.06
    1,1,2-trichlorotrifluoroethane 109.86
    DMS 16.51
    cumene 2.19
    2-octanol 2.63
    2-hexanone 16.42
    octyl acetate 5.66
    limonene 2.88
    1,2-dimethoxyethane 59.74
    ethyl orthosilicate 9.11
    tributyl phosphate 6.16
    diacetone alcohol 14.97
    N,N-dimethylaniline 8.54
    acrylonitrile 21.62
    aniline 15.25
    1,3-propanediol 21.87
    bromobenzene 15.23
    dibromomethane 62.78
    1,1,2,2-tetrachloroethane 106.31
    2-methyl-cyclohexyl acetate 11.85
    tetrabutyl urea 9.39
    diisobutyl methanol 2.07
    2-phenylethanol 14.35
    styrene 3.9
    dioctyl adipate 9.38
    dimethyl sulfate 45.87
    ethyl butyrate 10.58
    methyl lactate 19.86
    butyl lactate 11.58
    diethyl carbonate 10.7
    propanediol butyl ether 12.23
    triethyl orthoformate 10.59
    p-tert-butyltoluene 1.71
    methyl 4-tert-butylbenzoate 14.76
    morpholine 56.9
    tert-butylamine 2.51
    n-dodecanol 2.08
    dimethoxymethane 50.45
    ethylene carbonate 34.15
    cyrene 34.19
    2-ethoxyethyl acetate 21.53
    2-ethylhexyl acetate 8.57
    1,2,4-trichlorobenzene 28.7
    4-methylpyridine 32.18
    dibutyl ether 4.21
    2,6-dimethyl-4-heptanol 2.07
    DEF 34.01
    dimethyl isosorbide 36.04
    tetrachloroethylene 60.91
    eugenol 20.75
    triacetin 18.09
    span 80 14.04
    1,4-butanediol 12.2
    1,1-dichloroethane 39.34
    2-methyl-1-pentanol 10.01
    methyl formate 38.39
    2-methyl-1-butanol 10.23
    n-decane 0.3
    butyronitrile 11.48
    3,7-dimethyl-1-octanol 3.12
    1-chlorooctane 1.85
    1-chlorotetradecane 0.86
    n-nonane 0.22
    undecane 0.23
    tert-butylcyclohexane 0.29
    cyclooctane 0.21
    cyclopentanol 16.27
    tetrahydropyran 28.99
    tert-amyl methyl ether 6.27
    2,5,8-trioxanonane 39.55
    1-hexene 1.61
    2-isopropoxyethanol 24.58
    2,2,2-trifluoroethanol 32.63
    methyl butyrate 19.89

    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