C.I. Pigment Yellow 1

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  • Identifiers

    CAS number
    2512-29-0

    Molecular formula
    C17H16N4O4

    SMILES
    CC1=CC(=C(C=C1)N=NC(C(=O)C)C(=O)NC2=CC=CC=C2)[N+](=O)[O-]

    Safety labels

  • Odor profile

    Fragrance
    Fruity 53.34%
    Grape 42.53%
    Floral 29.8%
    Citrus 29.68%
    Sweet 28.72%
    Odorless 27.99%
    Cooked 27.12%
    Bitter 26.42%
    Meaty 25.93%
    Savory 24.79%

     

    Flavor
    Bitter 64.65%
    Odorless 46.47%
    Mild 24.93%
    Bland 23.5%
    Very mild 22.3%
    Nitrile 20.19%
    Bread crust 19.67%
    Taco 19.36%
    Roasted peanuts 19.34%
    Sweet-like 19.31%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    3.7

    pKa est.
    7.31 (neutral)

    Molecular weight
    340.33 g/mol

    Flash point

    • 204.51 ˚C est.

  • Synonyms

    • Hansa yellow
    • Hansa Yellow G
    • Light Yellow
    • Toluidine Yellow
    • Sanyo Fast Yellow G
    • Lightfast Yellow
    • Kromon Yellow G
    • Siegle Yellow G
    • Versal Yellow G
    • Fast Yellow J
    • Fastona Yellow G
    • Hansa Yellow GT
    • Oralith Yellow G
    • Silopol Yellow G
    • Fast Yellow JT
    • Carnelio Yellow G
    • Irgalite Yellow G
    • Permansa Yellow G
    • Transa Flo Yellow
    • Hansa Yellow GAD
    • Silosol Yellow GN
    • Arylamide Yellow G
    • Chromatex Yellow J
    • Graphtol Yellow GL
    • Monolite Yellow GN
    • Acrylamide Yellow G
    • Siloton Yellow GCL
    • Vulcafix Yellow 4J
    • Irgalite Yellow GNX
    • Irgalite Yellow GTN
    • Isol Aryl Yellow G
    • Isol Fast Yellow G
    • Mono Fast Yellow G
    • Syton Fast Yellow G
    • Isol Aryl Yellow GX
    • Ext D&C Yellow 5
    • Hansa Yellow G Extra
    • Hansa Yellow G Toner
    • Calcotone Hansa Yellow
    • Helio Fast Yellow GN
    • Helio Fast Yellow GT
    • Lutetia Fast Yellow J
    • Dainichi Fast Yellow G
    • Hancock Yellow 1008
    • Helio Fast Yellow GNS
    • Recolite Fast Yellow G
    • Segnale Light Yellow G
    • Symuler Fast Yellow GH
    • Irgalite Fast Yellow PG
    • Lithosol Fast Yellow HL
    • Lithosol Fast Yellow HV
    • Monolite Fast Yellow GA
    • Monolite Fast Yellow GN
    • Segnale Light Yellow AG
    • Segnale Light Yellow GM
    • Fanchon Yellow G YH-1
    • Permanent Yellow G Toner
    • Accosperse Hansa Yellow G
    • Eljon Fast Yellow GN-GX
    • Monolite Fast Yellow GNA
    • Monolite Fast Yellow GNV
    • Monolite Fast Yellow 2RA
    • Toluidine Yellow AH 175
    • Graphtol Yellow 4813-0
    • No. 9 Forthfast Yellow G
    • Eljon Fast Yellow PV Extra
    • Fastona Yellow G Transparent
    • Siegle Yellow GTR transparent
    • Hansa Yellow G 45-4050
    • Irgalite Yellow GNS
    • Monolite Fast Paper Yellow GN
    • Permanent Yellow Dark YT-392
    • Phthalocyanine Light Fast Yellow
    • No. 9/10 Forthfast Yellow G
    • Irgalite Yellow PV 2
    • Hansa Yellow Toner G YA-8365
    • C.I. 11680
    • No. 9/4604 Forthfast Yellow G
    • Fanchon Yellow G-YH 1
    • Irgalite Fast Yellow PG transparent
    • Burma Yellow X 1622
    • Hansa Yellow S 3155
    • Fanchon Yellow WD 259
    • Brazil Yellow X 2866
    • Isol Aryl Yellow G transp
    • Isol Fast Yellow G transp
    • CI 11680
    • Ext D and C Yellow No. 5
    • DTXSID4041735
    • HSDB 6142
    • Hansa Yellow Toner G-ya 8365
    • NSC 6131
    • EINECS 219-730-8
    • AI3-30763
    • EC 219-730-8
    • 2-((4-Methyl-2-nitrophenyl)azo)-3-oxo-N-phenylbutanamide
    • Fanchon Yellow G YH1
    • Fanchon Yellow GYH 1
    • Eljon Fast Yellow GNGX
    • RefChem:572570
    • Graphtol Yellow 48130
    • Hansa Yellow G 454050
    • Permanent Yellow Dark YT392
    • Hansa Yellow Toner G YA8365
    • DTXCID00809838
    • CI 11680 [INCI]
    • EXT D AND C YELLOW NO 5
    • alpha(oNitroptolylazo)acetoacetanilide
    • C.I. Pigment Yellow 1 (VAN) (8CI)
    • 2((4Methyl2nitrophenyl)azo)3oxoNphenylbutanamide
    • Butanamide, 2((4methyl2nitrophenyl)azo)3oxoNphenyl
    • 2512-29-0
    • RMB4YA40UY
    • 2-[(4-methyl-2-nitrophenyl)diazenyl]-3-oxo-N-phenylbutanamide
    • Butanamide, 2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenyl-
    • Hansa Yellow (Technical Grade)
    • NSC-6131
    • alpha-(o-Nitro-p-tolylazo)acetoacetanilide
    • .alpha.-(o-Nitro-p-tolylazo)acetoacetanilide
    • Butanamide, 2-((4-methyl-2-nitrophenyl)azo)-3-oxo-N-phenyl-
    • Butanamide, 2-(2-(4-methyl-2-nitrophenyl)diazenyl)-3-oxo-N-phenyl-
    • Isol Fast Yellow G Transp.
    • Irgalite Yellow PV2
    • HANCOCK YELLOW G
    • UNII-RMB4YA40UY
    • Burma Yellow X-1622
    • Hansa Yellow S-3155
    • 2512-29-0

  • Applications

    C.I. Pigment Yellow 1, CAS 2512-29-0, is commonly used as a colorant in coatings and paints, in printing inks, and in plastics through color masterbatches; it is also employed in rubber and adhesive formulations for industrial applications, and in plastics such as PVC and polyolefins as well as decorative coatings or packaging films.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 12.99
    methanol 16.29
    isopropanol 7.89
    water 0.01
    ethyl acetate 16.02
    n-propanol 10.57
    acetone 106.28
    n-butanol 7.58
    acetonitrile 31.3
    DMF 146.15
    toluene 10.21
    isobutanol 6.6
    1,4-dioxane 33.66
    methyl acetate 31.64
    THF 189.03
    2-butanone 64.77
    n-pentanol 9.75
    sec-butanol 8.31
    n-hexane 0.21
    ethylene glycol 3.72
    NMP 137.53
    cyclohexane 0.24
    DMSO 259.0
    n-butyl acetate 11.56
    n-octanol 2.25
    chloroform 42.28
    n-propyl acetate 14.87
    acetic acid 26.73
    dichloromethane 51.91
    cyclohexanone 67.67
    propylene glycol 8.27
    isopropyl acetate 10.09
    DMAc 213.9
    2-ethoxyethanol 29.51
    isopentanol 7.53
    n-heptane 0.16
    ethyl formate 14.41
    1,2-dichloroethane 42.32
    n-hexanol 5.08
    2-methoxyethanol 56.69
    isobutyl acetate 8.83
    tetrachloromethane 1.77
    n-pentyl acetate 5.94
    transcutol 82.01
    n-heptanol 2.87
    ethylbenzene 5.38
    MIBK 15.71
    2-propoxyethanol 31.89
    tert-butanol 9.04
    MTBE 5.6
    2-butoxyethanol 14.51
    propionic acid 13.31
    o-xylene 5.19
    formic acid 15.11
    diethyl ether 6.85
    m-xylene 4.78
    p-xylene 8.24
    chlorobenzene 13.86
    dimethyl carbonate 19.47
    n-octane 0.1
    formamide 31.88
    cyclopentanone 130.18
    2-pentanone 31.48
    anisole 18.46
    cyclopentyl methyl ether 19.61
    gamma-butyrolactone 103.62
    1-methoxy-2-propanol 34.48
    pyridine 54.52
    3-pentanone 25.6
    furfural 70.72
    n-dodecane 0.17
    diethylene glycol 27.55
    diisopropyl ether 1.33
    tert-amyl alcohol 8.23
    acetylacetone 52.32
    n-hexadecane 0.2
    acetophenone 26.98
    methyl propionate 24.52
    isopentyl acetate 11.54
    trichloroethylene 90.07
    n-nonanol 2.7
    cyclohexanol 7.96
    benzyl alcohol 19.97
    2-ethylhexanol 3.77
    isooctanol 2.77
    dipropyl ether 5.4
    1,2-dichlorobenzene 12.33
    ethyl lactate 13.93
    propylene carbonate 33.47
    n-methylformamide 42.6
    2-pentanol 4.21
    n-pentane 0.13
    1-propoxy-2-propanol 19.27
    1-methoxy-2-propyl acetate 23.27
    2-(2-methoxypropoxy) propanol 26.73
    mesitylene 2.33
    ε-caprolactone 38.81
    p-cymene 3.18
    epichlorohydrin 137.39
    1,1,1-trichloroethane 20.69
    2-aminoethanol 8.68
    morpholine-4-carbaldehyde 82.93
    sulfolane 170.26
    2,2,4-trimethylpentane 0.17
    2-methyltetrahydrofuran 45.89
    n-hexyl acetate 7.61
    isooctane 0.11
    2-(2-butoxyethoxy)ethanol 29.35
    sec-butyl acetate 9.22
    tert-butyl acetate 12.96
    decalin 0.4
    glycerin 15.0
    diglyme 59.06
    acrylic acid 16.7
    isopropyl myristate 4.54
    n-butyric acid 13.79
    acetyl acetate 12.31
    di(2-ethylhexyl) phthalate 8.52
    ethyl propionate 14.04
    nitromethane 94.99
    1,2-diethoxyethane 17.14
    benzonitrile 20.66
    trioctyl phosphate 4.5
    1-bromopropane 12.43
    gamma-valerolactone 118.39
    n-decanol 2.29
    triethyl phosphate 8.74
    4-methyl-2-pentanol 2.9
    propionitrile 19.22
    vinylene carbonate 25.87
    1,1,2-trichlorotrifluoroethane 66.83
    DMS 16.98
    cumene 3.53
    2-octanol 1.78
    2-hexanone 26.2
    octyl acetate 5.72
    limonene 3.76
    1,2-dimethoxyethane 62.42
    ethyl orthosilicate 7.04
    tributyl phosphate 6.5
    diacetone alcohol 27.56
    N,N-dimethylaniline 13.35
    acrylonitrile 32.17
    aniline 16.93
    1,3-propanediol 14.04
    bromobenzene 13.41
    dibromomethane 26.83
    1,1,2,2-tetrachloroethane 62.38
    2-methyl-cyclohexyl acetate 12.57
    tetrabutyl urea 12.65
    diisobutyl methanol 2.64
    2-phenylethanol 15.14
    styrene 7.26
    dioctyl adipate 10.83
    dimethyl sulfate 47.43
    ethyl butyrate 11.62
    methyl lactate 22.78
    butyl lactate 9.83
    diethyl carbonate 8.64
    propanediol butyl ether 13.52
    triethyl orthoformate 9.09
    p-tert-butyltoluene 2.65
    methyl 4-tert-butylbenzoate 18.11
    morpholine 50.51
    tert-butylamine 3.19
    n-dodecanol 1.84
    dimethoxymethane 56.24
    ethylene carbonate 19.74
    cyrene 37.1
    2-ethoxyethyl acetate 13.46
    2-ethylhexyl acetate 8.49
    1,2,4-trichlorobenzene 19.81
    4-methylpyridine 43.51
    dibutyl ether 4.23
    2,6-dimethyl-4-heptanol 2.64
    DEF 34.02
    dimethyl isosorbide 54.9
    tetrachloroethylene 24.93
    eugenol 21.49
    triacetin 16.42
    span 80 15.26
    1,4-butanediol 7.0
    1,1-dichloroethane 26.29
    2-methyl-1-pentanol 9.46
    methyl formate 37.87
    2-methyl-1-butanol 7.58
    n-decane 0.21
    butyronitrile 15.36
    3,7-dimethyl-1-octanol 3.44
    1-chlorooctane 1.43
    1-chlorotetradecane 0.85
    n-nonane 0.16
    undecane 0.19
    tert-butylcyclohexane 0.33
    cyclooctane 0.08
    cyclopentanol 15.16
    tetrahydropyran 24.68
    tert-amyl methyl ether 6.22
    2,5,8-trioxanonane 46.27
    1-hexene 2.29
    2-isopropoxyethanol 17.86
    2,2,2-trifluoroethanol 10.05
    methyl butyrate 20.65

    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