C.I. Acid Yellow 11, sodium salt

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  • Identifiers

    CAS number
    6359-82-6

    Molecular formula
    C16H13N4NaO4S

    SMILES
    CC1=NN(C(=O)C1N=NC2=CC=CC=C2)C3=CC=C(C=C3)S(=O)(=O)[O-].[Na+]

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Odorless 71.09%
    Cooked 27.77%
    Roasted 27.42%
    Bitter 22.21%
    Savory 22.04%
    Burnt 20.97%
    Nutty 20.61%
    Popcorn 20.15%
    Meaty 19.39%
    Pungent 14.55%

     

    Flavor
    Bitter 86.3%
    Odorless 30.05%
    Nitrile 20.38%
    Taco 19.44%
    Bread crust 19.28%
    Roasted peanuts 18.86%
    Very strong 18.59%
    Indole 18.27%
    Bland 18.19%
    Scallion 18.04%

     

    Odor impact est.
    Odorless

  • Properties

    pKa est.
    4.04 (weak acid)

    Molecular weight
    380.4 g/mol

    Flash point

    • 224.46 ˚C est.

  • Synonyms

    • DTXSID5047451
    • DTXCID401474359
    • RefChem:1080552
    • C.I. Acid Yellow 11, sodium salt
    • Acid yellow 11
    • 6359-82-6
    • Sodium 4-(3-hydroxy-5-methyl-4-phenylazopyrazol-2-yl)benzenesulphonate
    • Sodium 4-(3-methyl-5-oxo-4-(phenyldiazenyl)-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonate
    • sodium;4-(3-methyl-5-oxo-4-phenyldiazenyl-4H-pyrazol-1-yl)benzenesulfonate
    • ACIDYELLOW11
    • starbld0016530
    • Acid Brilliant Yellow G
    • UNII-ED6O1DCO98
    • SCHEMBL342266
    • CHEMBL3187836
    • tinctorial strength 97%-103%
    • MSK2483
    • UDTJJVCMRRCRDB-UHFFFAOYSA-M
    • EINECS 228-808-0
    • Tox21_302596
    • NCGC00256689-01
    • CAS-6359-82-6
    • NS00013487
    • F71338
    • Sodium 4-(4,5-dihydro-3-methyl-5-oxo-4-(phenylazo)-1H-pyrazol-1-yl)benze- nesulfonate
    • Benzenesulfonic acid, 4-(4,5-dihydro-3-methyl-5-oxo-4-(phenylazo)-1H-pyrazol-1-yl), sodium salt
    • Sodium 4-[3-methyl-5-oxo-4-(phenyldiazenyl)-4,5-dihydro-1H-pyrazol-1-yl]benzene-1-sulfonate
    • 6359-82-6

  • Applications

    C.I. Acid Yellow 11, sodium salt (6359-82-6) is utilized as a water-soluble dye colorant in textile dyeing, notably for protein fibers such as wool and silk and for certain polyamide fibers like nylon; it is also employed in leather finishing, in coatings and inks for industrial coloration, in paper coloration, and in polymer formulations to impart a yellow shade, all within applicable regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 4.23
    methanol 6.4
    isopropanol 2.01
    water 0.01
    ethyl acetate 8.04
    n-propanol 3.33
    acetone 35.13
    n-butanol 2.74
    acetonitrile 18.48
    DMF 104.31
    toluene 2.43
    isobutanol 1.75
    1,4-dioxane 15.86
    methyl acetate 12.53
    THF 39.93
    2-butanone 34.94
    n-pentanol 3.49
    sec-butanol 3.21
    n-hexane 0.02
    ethylene glycol 2.16
    NMP 65.15
    cyclohexane 0.07
    DMSO 59.66
    n-butyl acetate 7.39
    n-octanol 2.38
    chloroform 12.28
    n-propyl acetate 9.12
    acetic acid 13.26
    dichloromethane 17.46
    cyclohexanone 45.35
    propylene glycol 4.02
    isopropyl acetate 4.91
    DMAc 132.07
    2-ethoxyethanol 20.54
    isopentanol 2.35
    n-heptane 0.05
    ethyl formate 10.74
    1,2-dichloroethane 11.52
    n-hexanol 2.46
    2-methoxyethanol 36.53
    isobutyl acetate 3.98
    tetrachloromethane 0.3
    n-pentyl acetate 6.86
    transcutol 51.96
    n-heptanol 2.55
    ethylbenzene 1.2
    MIBK 6.87
    2-propoxyethanol 22.38
    tert-butanol 1.89
    MTBE 1.6
    2-butoxyethanol 13.25
    propionic acid 8.41
    o-xylene 1.42
    formic acid 11.44
    diethyl ether 2.1
    m-xylene 1.08
    p-xylene 1.95
    chlorobenzene 5.08
    dimethyl carbonate 10.77
    n-octane 0.05
    formamide 28.18
    cyclopentanone 57.44
    2-pentanone 15.38
    anisole 7.09
    cyclopentyl methyl ether 4.44
    gamma-butyrolactone 45.19
    1-methoxy-2-propanol 23.44
    pyridine 29.62
    3-pentanone 11.77
    furfural 47.85
    n-dodecane 0.11
    diethylene glycol 20.23
    diisopropyl ether 0.36
    tert-amyl alcohol 2.6
    acetylacetone 26.92
    n-hexadecane 0.12
    acetophenone 14.6
    methyl propionate 11.31
    isopentyl acetate 5.99
    trichloroethylene 34.02
    n-nonanol 2.94
    cyclohexanol 3.37
    benzyl alcohol 11.25
    2-ethylhexanol 2.03
    isooctanol 1.99
    dipropyl ether 2.12
    1,2-dichlorobenzene 4.71
    ethyl lactate 10.96
    propylene carbonate 16.93
    n-methylformamide 31.57
    2-pentanol 1.41
    n-pentane 0.02
    1-propoxy-2-propanol 14.36
    1-methoxy-2-propyl acetate 13.78
    2-(2-methoxypropoxy) propanol 19.01
    mesitylene 0.59
    ε-caprolactone 25.71
    p-cymene 1.24
    epichlorohydrin 43.09
    1,1,1-trichloroethane 3.06
    2-aminoethanol 4.66
    morpholine-4-carbaldehyde 59.23
    sulfolane 65.48
    2,2,4-trimethylpentane 0.03
    2-methyltetrahydrofuran 9.62
    n-hexyl acetate 7.17
    isooctane 0.01
    2-(2-butoxyethoxy)ethanol 22.53
    sec-butyl acetate 4.5
    tert-butyl acetate 4.97
    decalin 0.06
    glycerin 10.96
    diglyme 37.98
    acrylic acid 11.74
    isopropyl myristate 3.73
    n-butyric acid 8.73
    acetyl acetate 6.62
    di(2-ethylhexyl) phthalate 6.55
    ethyl propionate 6.83
    nitromethane 49.28
    1,2-diethoxyethane 11.68
    benzonitrile 15.81
    trioctyl phosphate 3.83
    1-bromopropane 2.33
    gamma-valerolactone 76.39
    n-decanol 2.39
    triethyl phosphate 4.52
    4-methyl-2-pentanol 0.94
    propionitrile 12.07
    vinylene carbonate 19.2
    1,1,2-trichlorotrifluoroethane 35.1
    DMS 9.26
    cumene 0.81
    2-octanol 1.82
    2-hexanone 14.48
    octyl acetate 5.22
    limonene 1.55
    1,2-dimethoxyethane 35.09
    ethyl orthosilicate 3.51
    tributyl phosphate 4.77
    diacetone alcohol 13.58
    N,N-dimethylaniline 4.97
    acrylonitrile 24.27
    aniline 7.08
    1,3-propanediol 7.05
    bromobenzene 3.76
    dibromomethane 6.56
    1,1,2,2-tetrachloroethane 17.89
    2-methyl-cyclohexyl acetate 7.04
    tetrabutyl urea 9.92
    diisobutyl methanol 1.17
    2-phenylethanol 10.68
    styrene 1.9
    dioctyl adipate 8.05
    dimethyl sulfate 19.91
    ethyl butyrate 7.02
    methyl lactate 17.03
    butyl lactate 10.35
    diethyl carbonate 5.19
    propanediol butyl ether 12.94
    triethyl orthoformate 5.51
    p-tert-butyltoluene 0.98
    methyl 4-tert-butylbenzoate 12.93
    morpholine 22.0
    tert-butylamine 0.61
    n-dodecanol 1.83
    dimethoxymethane 30.9
    ethylene carbonate 13.29
    cyrene 26.58
    2-ethoxyethyl acetate 13.15
    2-ethylhexyl acetate 4.53
    1,2,4-trichlorobenzene 7.76
    4-methylpyridine 20.85
    dibutyl ether 2.98
    2,6-dimethyl-4-heptanol 1.17
    DEF 24.63
    dimethyl isosorbide 29.45
    tetrachloroethylene 7.41
    eugenol 17.69
    triacetin 13.72
    span 80 13.34
    1,4-butanediol 4.06
    1,1-dichloroethane 5.39
    2-methyl-1-pentanol 3.23
    methyl formate 24.01
    2-methyl-1-butanol 2.49
    n-decane 0.14
    butyronitrile 9.39
    3,7-dimethyl-1-octanol 2.45
    1-chlorooctane 1.06
    1-chlorotetradecane 0.59
    n-nonane 0.1
    undecane 0.12
    tert-butylcyclohexane 0.04
    cyclooctane 0.03
    cyclopentanol 4.56
    tetrahydropyran 7.79
    tert-amyl methyl ether 1.95
    2,5,8-trioxanonane 31.17
    1-hexene 0.27
    2-isopropoxyethanol 11.1
    2,2,2-trifluoroethanol 6.57
    methyl butyrate 11.73

    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