2,6-Diaminopyridine

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  • Identifiers

    CAS number
    141-86-6

    Molecular formula
    C5H7N3

    SMILES
    C1=CC(=NC(=C1)N)N

    Safety labels

    Acute Toxic
    Acute Toxic

    Irritant
    Irritant

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Meaty 42.75%
    Roasted 37.15%
    Fishy 37.0%
    Odorless 34.82%
    Burnt 34.63%
    Cheesy 34.04%
    Animal 33.65%
    Nutty 29.32%
    Ripe 28.27%
    Musty 27.48%

     

    Flavor
    Bitter 45.52%
    Roasted 36.42%
    Nutty 30.23%
    Coffee 28.1%
    Mild 27.53%
    Meaty 27.36%
    Sulfury 23.67%
    Odorless 23.15%
    Cocoa 23.08%
    Sulfur 22.89%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    0.2

    pKa est.
    6.02 (neutral)

    Molecular weight
    109.13 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Slow

    Boiling point est.
    274°C

    Flash point

    • 166.99 ˚C est.

  • Synonyms

    • 2,6-Diaminopyridine
    • 141-86-6
    • pyridine-2,6-diamine
    • 2,6-pyridinediamine
    • pyridine, 2,6-diamino-
    • DAP (amine)
    • K89AB8CKG6
    • DTXSID0040127
    • NSC-1921
    • RODOL 26PYR
    • DTXCID8020127
    • RefChem:83122
    • CHEBI:51598
    • 205-507-2
    • Diaminopyridine
    • 2,6-Diamino pyridine
    • pyridine-2,6-diyldiamine
    • MFCD00006329
    • NSC 1921
    • 118352-40-2
    • 2-Pyridinamine,1,6-dihydro-6-imino-,(E)-(9CI)
    • 118352-39-9
    • 26D
    • 2-Pyridinamine,1,6-dihydro-6-imino-,(Z)-(9CI)
    • CAS-141-86-6
    • CCRIS 6682
    • Diaminopyridine, 2,6-
    • EINECS 205-507-2
    • UNII-K89AB8CKG6
    • BRN 0108513
    • AI3-18054
    • 2,6-diaminopyrdine
    • 2,6-diamino-pyridine
    • 2, 6-Diaminopyridine
    • 6-amino-2-iminopyridine
    • WLN: T6NJ BZ FZ
    • SCHEMBL64599
    • 2,6-Diaminopyridine, 98%
    • 5-22-11-00255 (Beilstein Handbook Reference)
    • BIDD:GT0354
    • DIAMINOPYRIDINE [VANDF]
    • 26-DAP
    • CHEMBL339234
    • orb2940149
    • SCHEMBL1817392
    • SCHEMBL4400163
    • SCHEMBL28639252
    • 2,6-DAP
    • NSC1921
    • BB_SC-08890
    • HY-Y0198
    • STR00979
    • Tox21_201654
    • Tox21_303403
    • BBL011548
    • MSK000225
    • SBB004340
    • STL146681
    • AKOS000119875
    • CS-W020019
    • FD00549
    • PS-9269
    • NCGC00249093-01
    • NCGC00257467-01
    • NCGC00259203-01
    • AC-10706
    • DB-013980
    • D1154
    • NS00013560
    • ST51046568
    • EN300-21301
    • D77864
    • AC-907/25014391
    • F077786
    • 2,6-Diaminopyridine 100 microg/mL in Acetonitrile
    • 2,6-Diaminopyridine, Vetec(TM) reagent grade, 98%
    • Q15725608
    • F8881-0498
    • Z104495224
    • InChI=1/C5H7N3/c6-4-2-1-3-5(7)8-4/h1-3H,(H4,6,7,8
    • 25168-43-8
    • 141-86-6

  • Applications

    2,6-Diaminopyridine (CAS 141-86-6) is a versatile building block in organic synthesis, commonly used as an intermediate to prepare heterocyclic compounds and as a precursor for metal-ligand systems in catalysis; it is often employed as a chelating ligand for metal centers to develop catalytic systems and related materials; in polymers and coatings, it can act as a functional monomer or curing agent for epoxy resins and other polymer systems; it is also considered as a precursor in the synthesis of certain pharmaceutical intermediates; its metal-complex forms are researched for electronic-material applications and advanced materials.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 409.78
    methanol 430.14
    isopropanol 114.45
    water 124.28
    ethyl acetate 80.78
    n-propanol 142.07
    acetone 260.24
    n-butanol 73.02
    acetonitrile 107.2
    DMF 275.62
    toluene 3.79
    isobutanol 47.86
    1,4-dioxane 113.7
    methyl acetate 92.18
    THF 341.16
    2-butanone 88.32
    n-pentanol 35.38
    sec-butanol 49.74
    n-hexane 0.97
    ethylene glycol 113.37
    NMP 193.35
    cyclohexane 0.73
    DMSO 420.24
    n-butyl acetate 26.4
    n-octanol 10.23
    chloroform 11.01
    n-propyl acetate 24.99
    acetic acid 461.23
    dichloromethane 10.24
    cyclohexanone 61.89
    propylene glycol 100.14
    isopropyl acetate 30.47
    DMAc 175.4
    2-ethoxyethanol 103.57
    isopentanol 31.34
    n-heptane 1.25
    ethyl formate 91.46
    1,2-dichloroethane 8.4
    n-hexanol 26.33
    2-methoxyethanol 314.3
    isobutyl acetate 12.61
    tetrachloromethane 3.85
    n-pentyl acetate 18.62
    transcutol 89.77
    n-heptanol 13.49
    ethylbenzene 0.52
    MIBK 21.98
    2-propoxyethanol 93.24
    tert-butanol 57.79
    MTBE 22.4
    2-butoxyethanol 43.66
    propionic acid 155.96
    o-xylene 2.5
    formic acid 488.42
    diethyl ether 41.29
    m-xylene 3.1
    p-xylene 1.14
    chlorobenzene 4.84
    dimethyl carbonate 52.78
    n-octane 0.45
    formamide 530.37
    cyclopentanone 173.4
    2-pentanone 62.83
    anisole 5.98
    cyclopentyl methyl ether 47.92
    gamma-butyrolactone 235.42
    1-methoxy-2-propanol 144.47
    pyridine 32.39
    3-pentanone 29.32
    furfural 120.98
    n-dodecane 0.37
    diethylene glycol 99.58
    diisopropyl ether 5.69
    tert-amyl alcohol 29.63
    acetylacetone 83.12
    n-hexadecane 0.4
    acetophenone 7.98
    methyl propionate 77.92
    isopentyl acetate 17.13
    trichloroethylene 14.52
    n-nonanol 8.62
    cyclohexanol 22.7
    benzyl alcohol 10.56
    2-ethylhexanol 8.85
    isooctanol 8.94
    dipropyl ether 13.67
    1,2-dichlorobenzene 3.58
    ethyl lactate 20.15
    propylene carbonate 80.39
    n-methylformamide 298.4
    2-pentanol 28.16
    n-pentane 1.38
    1-propoxy-2-propanol 48.77
    1-methoxy-2-propyl acetate 38.63
    2-(2-methoxypropoxy) propanol 26.88
    mesitylene 1.97
    ε-caprolactone 53.28
    p-cymene 1.91
    epichlorohydrin 107.19
    1,1,1-trichloroethane 8.36
    2-aminoethanol 165.47
    morpholine-4-carbaldehyde 145.26
    sulfolane 183.38
    2,2,4-trimethylpentane 0.66
    2-methyltetrahydrofuran 97.05
    n-hexyl acetate 18.7
    isooctane 0.53
    2-(2-butoxyethoxy)ethanol 37.34
    sec-butyl acetate 10.73
    tert-butyl acetate 24.31
    decalin 0.3
    glycerin 139.54
    diglyme 70.49
    acrylic acid 142.37
    isopropyl myristate 5.52
    n-butyric acid 130.14
    acetyl acetate 46.28
    di(2-ethylhexyl) phthalate 10.1
    ethyl propionate 18.72
    nitromethane 655.65
    1,2-diethoxyethane 25.9
    benzonitrile 11.76
    trioctyl phosphate 7.58
    1-bromopropane 5.04
    gamma-valerolactone 198.74
    n-decanol 5.97
    triethyl phosphate 9.03
    4-methyl-2-pentanol 10.51
    propionitrile 38.54
    vinylene carbonate 63.65
    1,1,2-trichlorotrifluoroethane 83.68
    DMS 19.74
    cumene 0.71
    2-octanol 7.54
    2-hexanone 20.93
    octyl acetate 9.65
    limonene 3.16
    1,2-dimethoxyethane 88.07
    ethyl orthosilicate 8.13
    tributyl phosphate 8.65
    diacetone alcohol 43.04
    N,N-dimethylaniline 3.97
    acrylonitrile 53.35
    aniline 18.69
    1,3-propanediol 168.7
    bromobenzene 2.8
    dibromomethane 5.96
    1,1,2,2-tetrachloroethane 11.62
    2-methyl-cyclohexyl acetate 9.95
    tetrabutyl urea 11.24
    diisobutyl methanol 4.99
    2-phenylethanol 12.82
    styrene 0.78
    dioctyl adipate 9.55
    dimethyl sulfate 70.43
    ethyl butyrate 15.56
    methyl lactate 63.19
    butyl lactate 20.37
    diethyl carbonate 11.84
    propanediol butyl ether 35.15
    triethyl orthoformate 13.01
    p-tert-butyltoluene 2.07
    methyl 4-tert-butylbenzoate 17.85
    morpholine 142.09
    tert-butylamine 18.02
    n-dodecanol 4.2
    dimethoxymethane 154.67
    ethylene carbonate 56.86
    cyrene 27.58
    2-ethoxyethyl acetate 34.77
    2-ethylhexyl acetate 12.08
    1,2,4-trichlorobenzene 5.95
    4-methylpyridine 25.27
    dibutyl ether 6.96
    2,6-dimethyl-4-heptanol 4.99
    DEF 53.4
    dimethyl isosorbide 39.79
    tetrachloroethylene 9.3
    eugenol 20.13
    triacetin 21.7
    span 80 23.05
    1,4-butanediol 47.09
    1,1-dichloroethane 9.45
    2-methyl-1-pentanol 16.89
    methyl formate 210.35
    2-methyl-1-butanol 31.37
    n-decane 0.61
    butyronitrile 39.19
    3,7-dimethyl-1-octanol 7.39
    1-chlorooctane 2.47
    1-chlorotetradecane 1.05
    n-nonane 0.58
    undecane 0.45
    tert-butylcyclohexane 0.41
    cyclooctane 0.33
    cyclopentanol 66.4
    tetrahydropyran 50.73
    tert-amyl methyl ether 14.57
    2,5,8-trioxanonane 48.51
    1-hexene 2.68
    2-isopropoxyethanol 42.35
    2,2,2-trifluoroethanol 150.93
    methyl butyrate 25.27

    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