Brown FK

Overview IFRA Request a quote

  • Identifiers

    CAS number
    8062-14-4

    Molecular formula
    C31H27N10Na3O9S3

    SMILES
    CC1=CC(=C(C=C1N)N)N=NC2=CC=C(C=C2)S(=O)(=O)[O-].C1=CC(=CC=C1N=NC2=CC(=C(C=C2N)N)N=NC3=CC=C(C=C3)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+]

    Safety labels

  • Odor profile

    Fragrance
    Odorless 72.94%
    Cooked 24.94%
    Savory 23.92%
    Meaty 23.02%
    Roasted 22.06%
    Bitter 20.56%
    Grape 19.47%
    Burnt 19.1%
    Milky 14.69%
    Animal 13.43%

     

    Flavor
    Bitter 82.11%
    Odorless 35.07%
    Nitrile 21.27%
    Mild 20.91%
    Bland 20.25%
    Bread crust 20.14%
    Very strong 20.07%
    Taco 20.0%
    Roasted peanuts 19.63%
    Indole 19.51%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    4.22 (weak acid)

    Molecular weight
    848.8 g/mol

    Flash point

    • 263.87 ˚C est.

  • Synonyms

    • Brown FK
    • 8062-14-4
    • trisodium;4-[(2,4-diamino-5-methylphenyl)diazenyl]benzenesulfonate;4-[[2,4-diamino-5-[(4-sulfonatophenyl)diazenyl]phenyl]diazenyl]benzenesulfonate
    • Golden Brown RK-FQ
    • C.I. Food Brown 1
    • 1545 Brown
    • EEC No. 124
    • Brown-FK
    • SCHEMBL28222655
    • 8062-14-4

  • Applications

    Brown FK (CAS 8062-14-4) is primarily used as a colorant and dye intermediate across several industrial sectors; typical applications include textile dyeing (especially for disperse dye processes), coloration of polymers and plastics via masterbatches or compound formulations, and use in coatings and printing inks to impart brown hues; it may also serve as a colorant in leather and fur dyeing and, where applicable, in paper coloration, all subject to regulatory and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 6.02
    methanol 9.13
    isopropanol 3.79
    water 0.01
    ethyl acetate 3.16
    n-propanol 4.21
    acetone 32.63
    n-butanol 2.51
    acetonitrile 4.72
    DMF 51.28
    toluene 0.26
    isobutanol 1.05
    1,4-dioxane 11.47
    methyl acetate 6.82
    THF 51.57
    2-butanone 24.54
    n-pentanol 1.28
    sec-butanol 2.45
    n-hexane 0.01
    ethylene glycol 2.32
    NMP 17.04
    cyclohexane 0.02
    DMSO 65.14
    n-butyl acetate 1.81
    n-octanol 0.46
    chloroform 0.99
    n-propyl acetate 2.0
    acetic acid 11.28
    dichloromethane 1.0
    cyclohexanone 11.99
    propylene glycol 7.04
    isopropyl acetate 1.94
    DMAc 63.14
    2-ethoxyethanol 19.95
    isopentanol 1.28
    n-heptane 0.02
    ethyl formate 4.42
    1,2-dichloroethane 0.9
    n-hexanol 1.14
    2-methoxyethanol 51.03
    isobutyl acetate 0.67
    tetrachloromethane 0.08
    n-pentyl acetate 1.65
    transcutol 32.39
    n-heptanol 1.03
    ethylbenzene 0.1
    MIBK 2.5
    2-propoxyethanol 16.93
    tert-butanol 2.82
    MTBE 0.83
    2-butoxyethanol 8.05
    propionic acid 4.12
    o-xylene 0.17
    formic acid 8.67
    diethyl ether 1.02
    m-xylene 0.16
    p-xylene 0.21
    chlorobenzene 0.35
    dimethyl carbonate 3.77
    n-octane 0.01
    formamide 27.95
    cyclopentanone 35.45
    2-pentanone 8.18
    anisole 1.43
    cyclopentyl methyl ether 1.25
    gamma-butyrolactone 21.92
    1-methoxy-2-propanol 28.77
    pyridine 8.96
    3-pentanone 3.89
    furfural 20.48
    n-dodecane 0.01
    diethylene glycol 17.02
    diisopropyl ether 0.13
    tert-amyl alcohol 1.73
    acetylacetone 16.2
    n-hexadecane 0.02
    acetophenone 2.75
    methyl propionate 4.04
    isopentyl acetate 1.51
    trichloroethylene 3.28
    n-nonanol 0.62
    cyclohexanol 0.88
    benzyl alcohol 2.31
    2-ethylhexanol 0.44
    isooctanol 0.65
    dipropyl ether 0.79
    1,2-dichlorobenzene 0.36
    ethyl lactate 3.66
    propylene carbonate 4.93
    n-methylformamide 21.55
    2-pentanol 0.93
    n-pentane 0.01
    1-propoxy-2-propanol 9.17
    1-methoxy-2-propyl acetate 5.61
    2-(2-methoxypropoxy) propanol 8.12
    mesitylene 0.11
    ε-caprolactone 6.3
    p-cymene 0.19
    epichlorohydrin 19.08
    1,1,1-trichloroethane 0.43
    2-aminoethanol 6.19
    morpholine-4-carbaldehyde 30.61
    sulfolane 27.86
    2,2,4-trimethylpentane 0.01
    2-methyltetrahydrofuran 4.68
    n-hexyl acetate 1.44
    isooctane 0.01
    2-(2-butoxyethoxy)ethanol 11.89
    sec-butyl acetate 0.89
    tert-butyl acetate 2.32
    decalin 0.01
    glycerin 15.79
    diglyme 24.6
    acrylic acid 5.51
    isopropyl myristate 0.68
    n-butyric acid 5.58
    acetyl acetate 2.48
    di(2-ethylhexyl) phthalate 1.46
    ethyl propionate 1.54
    nitromethane 42.38
    1,2-diethoxyethane 4.0
    benzonitrile 1.82
    trioctyl phosphate 0.86
    1-bromopropane 0.26
    gamma-valerolactone 59.1
    n-decanol 0.49
    triethyl phosphate 1.02
    4-methyl-2-pentanol 0.44
    propionitrile 2.35
    vinylene carbonate 4.54
    1,1,2-trichlorotrifluoroethane 19.55
    DMS 2.08
    cumene 0.08
    2-octanol 0.44
    2-hexanone 4.16
    octyl acetate 1.03
    limonene 0.25
    1,2-dimethoxyethane 29.3
    ethyl orthosilicate 0.86
    tributyl phosphate 1.01
    diacetone alcohol 9.29
    N,N-dimethylaniline 0.85
    acrylonitrile 5.48
    aniline 1.46
    1,3-propanediol 10.66
    bromobenzene 0.22
    dibromomethane 0.41
    1,1,2,2-tetrachloroethane 2.37
    2-methyl-cyclohexyl acetate 1.54
    tetrabutyl urea 2.21
    diisobutyl methanol 0.37
    2-phenylethanol 2.74
    styrene 0.16
    dioctyl adipate 1.73
    dimethyl sulfate 7.27
    ethyl butyrate 1.69
    methyl lactate 9.12
    butyl lactate 3.3
    diethyl carbonate 1.14
    propanediol butyl ether 7.31
    triethyl orthoformate 1.56
    p-tert-butyltoluene 0.19
    methyl 4-tert-butylbenzoate 4.03
    morpholine 20.16
    tert-butylamine 0.49
    n-dodecanol 0.35
    dimethoxymethane 27.23
    ethylene carbonate 2.78
    cyrene 10.11
    2-ethoxyethyl acetate 4.55
    2-ethylhexyl acetate 0.84
    1,2,4-trichlorobenzene 0.74
    4-methylpyridine 3.9
    dibutyl ether 0.55
    2,6-dimethyl-4-heptanol 0.37
    DEF 6.36
    dimethyl isosorbide 12.99
    tetrachloroethylene 1.13
    eugenol 5.84
    triacetin 3.71
    span 80 5.12
    1,4-butanediol 2.38
    1,1-dichloroethane 0.59
    2-methyl-1-pentanol 0.78
    methyl formate 15.65
    2-methyl-1-butanol 1.03
    n-decane 0.02
    butyronitrile 2.01
    3,7-dimethyl-1-octanol 0.51
    1-chlorooctane 0.12
    1-chlorotetradecane 0.06
    n-nonane 0.02
    undecane 0.02
    tert-butylcyclohexane 0.01
    cyclooctane 0.01
    cyclopentanol 2.04
    tetrahydropyran 3.37
    tert-amyl methyl ether 0.64
    2,5,8-trioxanonane 17.28
    1-hexene 0.06
    2-isopropoxyethanol 6.55
    2,2,2-trifluoroethanol 3.59
    methyl butyrate 2.96

    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