2,6-Diamino-3-((pyridin-3-yl)azo)pyridine

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  • Identifiers

    CAS number
    28365-08-4

    Molecular formula
    C10H10N6

    SMILES
    C1=CC(=CN=C1)N=NC2=C(N=C(C=C2)N)N

    Safety labels

    Irritant
    Irritant

    Health Hazard
    Health

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Roasted 48.4%
    Odorless 42.85%
    Meaty 40.83%
    Nutty 37.82%
    Burnt 34.31%
    Cooked 31.68%
    Popcorn 28.06%
    Savory 26.02%
    Hazelnut 22.44%
    Musty 22.27%

     

    Flavor
    Bitter 82.67%
    Odorless 32.92%
    Roasted 29.09%
    Nutty 24.35%
    Bread crust 21.77%
    Scallion 21.23%
    Very strong 20.98%
    Taco 20.83%
    Cereal 20.72%
    Cooked 20.7%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    0.9

    pKa est.
    3.83 (weak acid)

    Molecular weight
    214.23 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    487°C

    Flash point

    • 268.01 ˚C est.

  • Synonyms

    • 2,6-DIAMINO-3-((PYRIDIN-3-YL)AZO)PYRIDINE
    • 28365-08-4
    • K2VY200N7B
    • Pyridine, 2,6-diamino-3,3'-azodi-
    • 2,6-Pyridinediamine, 3-(3-pyridinylazo)-
    • 2,6-Pyridinediamine, 3-(2-(3-pyridinyl)diazenyl)-
    • 2,6-diamino-3-((pyridine-3-yl)azo)pyridine
    • EC 421-430-9
    • 2,6-Diamino-3-((pyridin-3-yl)azo)pyridine [INCI]
    • DTXSID90182607
    • 2,6-Pyridinediamine, 3-[2-(3-pyridinyl)diazenyl]-
    • RefChem:445283
    • DTXCID90105098
    • 421-430-9
    • UNII-K2VY200N7B
    • 3-(pyridin-3-yldiazenyl)pyridine-2,6-diamine
    • SCHEMBL111681
    • SCHEMBL111682
    • SCHEMBL30078560
    • NS00004918
    • 3-[(E)-(Pyridin-3-yl)diazenyl]pyridine-2,6-diamine
    • Q27281866
    • 28365-08-4

  • Applications

    2,6-Diamino-3-((pyridin-3-yl)azo)pyridine (CAS 28365-08-4) is primarily used as an azo dye intermediate and building block for colorants; in textile dye production it serves as a precursor for fabric dyes and related printing inks; in coatings and inks it functions as a colorant in industrial coatings and decorative inks; in polymer formulations it is used as a colorant additive for plastics and polymer matrices; in dye chemistry and materials science it may be employed as a scaffold for developing functional dyes intended for electronics-related applications such as dye-sensitized solar cells and sensors.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 12.66
    methanol 25.55
    isopropanol 6.98
    water 0.4
    ethyl acetate 9.3
    n-propanol 9.49
    acetone 23.44
    n-butanol 6.47
    acetonitrile 15.22
    DMF 83.47
    toluene 2.57
    isobutanol 4.58
    1,4-dioxane 11.65
    methyl acetate 11.45
    THF 88.59
    2-butanone 19.29
    n-pentanol 4.97
    sec-butanol 5.32
    n-hexane 0.08
    ethylene glycol 15.84
    NMP 59.38
    cyclohexane 0.1
    DMSO 356.66
    n-butyl acetate 5.62
    n-octanol 0.4
    chloroform 3.32
    n-propyl acetate 5.01
    acetic acid 60.6
    dichloromethane 4.67
    cyclohexanone 20.73
    propylene glycol 24.95
    isopropyl acetate 3.82
    DMAc 107.09
    2-ethoxyethanol 45.08
    isopentanol 4.53
    n-heptane 0.15
    ethyl formate 18.51
    1,2-dichloroethane 4.31
    n-hexanol 2.91
    2-methoxyethanol 133.72
    isobutyl acetate 2.3
    tetrachloromethane 0.64
    n-pentyl acetate 1.93
    transcutol 65.29
    n-heptanol 1.13
    ethylbenzene 0.53
    MIBK 4.11
    2-propoxyethanol 27.68
    tert-butanol 5.68
    MTBE 1.64
    2-butoxyethanol 9.78
    propionic acid 19.44
    o-xylene 1.29
    formic acid 67.62
    diethyl ether 2.08
    m-xylene 1.38
    p-xylene 1.01
    chlorobenzene 3.12
    dimethyl carbonate 12.18
    n-octane 0.04
    formamide 116.09
    cyclopentanone 55.92
    2-pentanone 10.04
    anisole 3.02
    cyclopentyl methyl ether 9.04
    gamma-butyrolactone 70.49
    1-methoxy-2-propanol 60.98
    pyridine 26.18
    3-pentanone 6.96
    furfural 80.14
    n-dodecane 0.03
    diethylene glycol 47.96
    diisopropyl ether 0.47
    tert-amyl alcohol 4.2
    acetylacetone 19.47
    n-hexadecane 0.04
    acetophenone 6.4
    methyl propionate 14.05
    isopentyl acetate 4.49
    trichloroethylene 11.49
    n-nonanol 0.52
    cyclohexanol 4.17
    benzyl alcohol 8.42
    2-ethylhexanol 1.61
    isooctanol 0.94
    dipropyl ether 2.27
    1,2-dichlorobenzene 2.65
    ethyl lactate 9.84
    propylene carbonate 24.39
    n-methylformamide 63.6
    2-pentanol 2.58
    n-pentane 0.09
    1-propoxy-2-propanol 14.82
    1-methoxy-2-propyl acetate 13.15
    2-(2-methoxypropoxy) propanol 12.44
    mesitylene 0.64
    ε-caprolactone 19.58
    p-cymene 0.84
    epichlorohydrin 63.52
    1,1,1-trichloroethane 2.27
    2-aminoethanol 24.83
    morpholine-4-carbaldehyde 57.28
    sulfolane 103.68
    2,2,4-trimethylpentane 0.07
    2-methyltetrahydrofuran 17.96
    n-hexyl acetate 1.4
    isooctane 0.05
    2-(2-butoxyethoxy)ethanol 17.69
    sec-butyl acetate 2.31
    tert-butyl acetate 3.71
    decalin 0.08
    glycerin 67.57
    diglyme 37.8
    acrylic acid 27.9
    isopropyl myristate 0.83
    n-butyric acid 21.93
    acetyl acetate 7.56
    di(2-ethylhexyl) phthalate 2.93
    ethyl propionate 4.53
    nitromethane 127.34
    1,2-diethoxyethane 6.02
    benzonitrile 8.13
    trioctyl phosphate 1.47
    1-bromopropane 1.42
    gamma-valerolactone 88.67
    n-decanol 0.47
    triethyl phosphate 3.92
    4-methyl-2-pentanol 1.43
    propionitrile 8.06
    vinylene carbonate 22.29
    1,1,2-trichlorotrifluoroethane 66.29
    DMS 4.38
    cumene 0.45
    2-octanol 0.46
    2-hexanone 5.39
    octyl acetate 1.19
    limonene 1.06
    1,2-dimethoxyethane 35.6
    ethyl orthosilicate 3.21
    tributyl phosphate 2.12
    diacetone alcohol 13.51
    N,N-dimethylaniline 2.42
    acrylonitrile 17.07
    aniline 11.76
    1,3-propanediol 35.83
    bromobenzene 2.08
    dibromomethane 2.37
    1,1,2,2-tetrachloroethane 8.57
    2-methyl-cyclohexyl acetate 3.75
    tetrabutyl urea 3.06
    diisobutyl methanol 1.07
    2-phenylethanol 5.95
    styrene 0.8
    dioctyl adipate 2.48
    dimethyl sulfate 30.79
    ethyl butyrate 4.97
    methyl lactate 29.04
    butyl lactate 4.97
    diethyl carbonate 4.34
    propanediol butyl ether 8.34
    triethyl orthoformate 4.73
    p-tert-butyltoluene 0.76
    methyl 4-tert-butylbenzoate 5.73
    morpholine 29.73
    tert-butylamine 1.56
    n-dodecanol 0.4
    dimethoxymethane 42.88
    ethylene carbonate 16.55
    cyrene 18.6
    2-ethoxyethyl acetate 6.01
    2-ethylhexyl acetate 3.04
    1,2,4-trichlorobenzene 4.74
    4-methylpyridine 17.75
    dibutyl ether 0.7
    2,6-dimethyl-4-heptanol 1.07
    DEF 16.08
    dimethyl isosorbide 21.75
    tetrachloroethylene 5.31
    eugenol 7.89
    triacetin 5.09
    span 80 7.63
    1,4-butanediol 12.64
    1,1-dichloroethane 2.33
    2-methyl-1-pentanol 3.57
    methyl formate 47.37
    2-methyl-1-butanol 4.3
    n-decane 0.04
    butyronitrile 7.61
    3,7-dimethyl-1-octanol 0.75
    1-chlorooctane 0.16
    1-chlorotetradecane 0.11
    n-nonane 0.04
    undecane 0.04
    tert-butylcyclohexane 0.07
    cyclooctane 0.05
    cyclopentanol 10.08
    tetrahydropyran 7.34
    tert-amyl methyl ether 1.82
    2,5,8-trioxanonane 26.13
    1-hexene 0.41
    2-isopropoxyethanol 14.56
    2,2,2-trifluoroethanol 22.88
    methyl butyrate 7.54

    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