C.I. Pigment Yellow 100

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  • Identifiers

    CAS number
    12225-21-7

    Molecular formula
    C48H33AlN12O27S6

    SMILES
    C1=CC(=CC=C1N=NC2C(=NN(C2=O)C3=CC=C(C=C3)S(=O)(=O)O)C(=O)O)S(=O)(=O)[O-].C1=CC(=CC=C1N=NC2C(=NN(C2=O)C3=CC=C(C=C3)S(=O)(=O)O)C(=O)O)S(=O)(=O)[O-].C1=CC(=CC=C1N=NC2C(=NN(C2=O)C3=CC=C(C=C3)S(=O)(=O)O)C(=O)O)S(=O)(=O)[O-].[Al+3]

    Safety labels

  • Odor profile

    Fragrance
    Odorless 86.36%
    Cooked 23.66%
    Roasted 20.4%
    Savory 20.33%
    Burnt 18.62%
    Bitter 17.11%
    Nutty 13.9%
    Meaty 13.72%
    Popcorn 13.36%
    Pungent 13.26%

     

    Flavor
    Bitter 86.38%
    Odorless 36.2%
    Bland 21.79%
    Nitrile 20.03%
    Very mild 18.95%
    Taco 18.78%
    Bread crust 18.71%
    Roasted peanuts 18.15%
    Very strong 17.95%
    Indole 17.75%

     

    Odor impact est.
    Odorless

  • Properties

    pKa est.
    2.04 (strong acid)

    Molecular weight
    1429.2 g/mol

    Melting point expt.

    • greater than 572 °F (NTP, 1992)

    Flash point

    • 318.73 ˚C est.

    Solubility expt.

    • less than 1 mg/mL at 70 °F (NTP, 1992)

  • Synonyms

    • 12225-21-7
    • DTXSID2025921
    • YELLOW LAKE T
    • RefChem:572571
    • DTXCID801838024
    • JAPAN YELLOW 4 ALUMINUM LAKE
    • FD AND C YELLOW NO. 5 ALUMINUM LAKE
    • 4,5-DIHYDRO-5-OXO-1-(4-SULFOPHENYL)-4-((4-SULFOPHENYL)AZO)-1H-PYRAZOLE-3-CARBOXYLIC ACID ALUMINUM COMPLEX
    • Food Yellow 4
    • SCHEMBL3282817
    • CHEBI:189920
    • CID 22833487
    • NS00001745
    • aluminum;4-[[3-carboxy-5-oxo-1-(4-sulophenyl)-4H-pyrazol-4-yl]diazenyl]benzenesulonate
    • Aluminium tris(4-{[3-carboxy-5-oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazol-4-yl]diazenyl}benzene-1-sulfonate)
    • 12225-21-7

  • Applications

    C.I. Pigment Yellow 100 (CAS 12225-21-7) is used as a durable yellow pigment in coatings and inks for industrial applications, including industrial coatings, automotive finishes, and packaging inks. In polymers and plastics, the pigment is commonly incorporated into masterbatches or color concentrates to color consumer plastics and packaging films. It may also be used as a colorant in adhesives and sealants where coloration is required. In addition, it is used to color consumer plastic articles for household products, enhancing aesthetics and color consistency in molded and decorative items.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 4.22
    methanol 6.8
    isopropanol 1.68
    water 0.05
    ethyl acetate 1.3
    n-propanol 2.33
    acetone 9.16
    n-butanol 1.09
    acetonitrile 2.61
    DMF 117.5
    toluene 0.21
    isobutanol 0.77
    1,4-dioxane 7.76
    methyl acetate 3.99
    THF 17.22
    2-butanone 7.38
    n-pentanol 0.5
    sec-butanol 1.62
    n-hexane 0.01
    ethylene glycol 4.64
    NMP 73.1
    cyclohexane 0.03
    DMSO 75.78
    n-butyl acetate 0.91
    n-octanol 0.65
    chloroform 0.5
    n-propyl acetate 1.0
    acetic acid 7.06
    dichloromethane 0.89
    cyclohexanone 6.2
    propylene glycol 6.08
    isopropyl acetate 0.75
    DMAc 112.64
    2-ethoxyethanol 13.35
    isopentanol 0.54
    n-heptane 0.02
    ethyl formate 2.64
    1,2-dichloroethane 0.73
    n-hexanol 0.31
    2-methoxyethanol 45.72
    isobutyl acetate 0.22
    tetrachloromethane 0.04
    n-pentyl acetate 0.98
    transcutol 18.04
    n-heptanol 0.57
    ethylbenzene 0.07
    MIBK 0.74
    2-propoxyethanol 9.47
    tert-butanol 0.92
    MTBE 0.49
    2-butoxyethanol 5.75
    propionic acid 4.02
    o-xylene 0.16
    formic acid 13.77
    diethyl ether 0.86
    m-xylene 0.08
    p-xylene 0.09
    chlorobenzene 0.13
    dimethyl carbonate 4.39
    n-octane 0.01
    formamide 34.5
    cyclopentanone 15.51
    2-pentanone 2.5
    anisole 0.73
    cyclopentyl methyl ether 1.29
    gamma-butyrolactone 15.94
    1-methoxy-2-propanol 21.54
    pyridine 5.56
    3-pentanone 2.13
    furfural 14.56
    n-dodecane 0.01
    diethylene glycol 11.17
    diisopropyl ether 0.08
    tert-amyl alcohol 1.05
    acetylacetone 4.98
    n-hexadecane 0.02
    acetophenone 1.31
    methyl propionate 3.55
    isopentyl acetate 0.54
    trichloroethylene 1.58
    n-nonanol 0.69
    cyclohexanol 0.8
    benzyl alcohol 1.18
    2-ethylhexanol 0.17
    isooctanol 0.32
    dipropyl ether 0.55
    1,2-dichlorobenzene 0.13
    ethyl lactate 2.47
    propylene carbonate 2.99
    n-methylformamide 31.41
    2-pentanol 0.45
    n-pentane 0.01
    1-propoxy-2-propanol 5.51
    1-methoxy-2-propyl acetate 2.77
    2-(2-methoxypropoxy) propanol 6.35
    mesitylene 0.05
    ε-caprolactone 4.86
    p-cymene 0.07
    epichlorohydrin 9.74
    1,1,1-trichloroethane 0.15
    2-aminoethanol 7.61
    morpholine-4-carbaldehyde 56.83
    sulfolane 34.07
    2,2,4-trimethylpentane 0.01
    2-methyltetrahydrofuran 3.13
    n-hexyl acetate 1.14
    isooctane 0.0
    2-(2-butoxyethoxy)ethanol 8.86
    sec-butyl acetate 0.38
    tert-butyl acetate 0.75
    decalin 0.01
    glycerin 19.91
    diglyme 18.45
    acrylic acid 6.01
    isopropyl myristate 0.41
    n-butyric acid 2.37
    acetyl acetate 0.82
    di(2-ethylhexyl) phthalate 0.68
    ethyl propionate 0.95
    nitromethane 25.61
    1,2-diethoxyethane 2.29
    benzonitrile 0.79
    trioctyl phosphate 0.47
    1-bromopropane 0.2
    gamma-valerolactone 40.19
    n-decanol 0.48
    triethyl phosphate 0.59
    4-methyl-2-pentanol 0.15
    propionitrile 1.59
    vinylene carbonate 3.03
    1,1,2-trichlorotrifluoroethane 13.18
    DMS 1.67
    cumene 0.04
    2-octanol 0.37
    2-hexanone 1.27
    octyl acetate 0.81
    limonene 0.13
    1,2-dimethoxyethane 17.85
    ethyl orthosilicate 0.45
    tributyl phosphate 0.48
    diacetone alcohol 3.63
    N,N-dimethylaniline 0.55
    acrylonitrile 4.27
    aniline 0.93
    1,3-propanediol 7.39
    bromobenzene 0.08
    dibromomethane 0.31
    1,1,2,2-tetrachloroethane 1.3
    2-methyl-cyclohexyl acetate 0.59
    tetrabutyl urea 1.58
    diisobutyl methanol 0.1
    2-phenylethanol 0.88
    styrene 0.11
    dioctyl adipate 1.04
    dimethyl sulfate 9.66
    ethyl butyrate 0.9
    methyl lactate 10.27
    butyl lactate 2.11
    diethyl carbonate 0.69
    propanediol butyl ether 5.48
    triethyl orthoformate 1.0
    p-tert-butyltoluene 0.07
    methyl 4-tert-butylbenzoate 2.26
    morpholine 14.83
    tert-butylamine 0.22
    n-dodecanol 0.31
    dimethoxymethane 24.98
    ethylene carbonate 2.03
    cyrene 8.5
    2-ethoxyethyl acetate 2.61
    2-ethylhexyl acetate 0.38
    1,2,4-trichlorobenzene 0.29
    4-methylpyridine 2.57
    dibutyl ether 0.49
    2,6-dimethyl-4-heptanol 0.1
    DEF 8.51
    dimethyl isosorbide 7.62
    tetrachloroethylene 0.65
    eugenol 3.19
    triacetin 2.52
    span 80 3.77
    1,4-butanediol 1.98
    1,1-dichloroethane 0.28
    2-methyl-1-pentanol 0.29
    methyl formate 17.01
    2-methyl-1-butanol 0.7
    n-decane 0.03
    butyronitrile 0.89
    3,7-dimethyl-1-octanol 0.29
    1-chlorooctane 0.13
    1-chlorotetradecane 0.05
    n-nonane 0.02
    undecane 0.02
    tert-butylcyclohexane 0.0
    cyclooctane 0.01
    cyclopentanol 1.93
    tetrahydropyran 2.32
    tert-amyl methyl ether 0.56
    2,5,8-trioxanonane 13.14
    1-hexene 0.05
    2-isopropoxyethanol 4.17
    2,2,2-trifluoroethanol 3.15
    methyl butyrate 1.65

    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