Hydrazoic acid

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  • Identifiers

    CAS number
    7782-79-8

    Molecular formula
    HN3

    SMILES
    N=[N+]=[N-]

    Safety labels

    Explosive
    Explosive

    Irritant
    Irritant

    Health Hazard
    Health

  • Odor profile

    Fragrance
    Odorless 72.74%
    Pungent 61.91%
    Radish 36.57%
    Sharp 20.69%
    Sulfurous 20.66%
    Alliaceous 20.16%
    Garlic 19.27%
    Burnt 16.46%
    Aromatic 12.3%
    Cabbage 12.3%

     

    Flavor
    Bitter 60.23%
    Pungent 47.64%
    Mustard 47.07%
    Odorless 45.17%
    Sulfur 31.81%
    Horseradish 26.01%
    Formyl 24.47%
    Garlic 24.04%
    Rotten 22.5%
    Vinegar 22.12%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    1.7

    pKa est.
    -0.12 (strong acid)

    Molecular weight
    43.029 g/mol

    Melting point expt.

    • -80 °C
    • -112 °F

    Boiling point

    • 35.7 °C
    • 96.26 °F

    Flash point

    • 59.37 ˚C est.

  • Synonyms

    • HYDRAZOIC ACID
    • Hydrogen azide
    • Triazoic acid
    • 7782-79-8
    • Hydronitric acid
    • Azoimide
    • Diazoimide
    • Stickstoffwasserstoffsaeure
    • [NNNH]
    • EINECS 231-965-8
    • UNII-6P5C4D5D7I
    • CHEBI:29449
    • HSDB 7858
    • hydrogen trinitride(1-)
    • HYDRAZOIC ACID [MI]
    • HYDRAZOIC ACID [HSDB]
    • 6P5C4D5D7I
    • CHEMBL186537
    • DTXSID20884425
    • hydrido-1kappaH-trinitrogen(2N--N)
    • (NNNH)
    • N3H
    • Stickstoffwasserstoffsaeure [German]
    • AZIDIC ACID
    • Nitrogen, mol. (N3)
    • DTXCID701023866
    • DTXSID801315735
    • BDBM50153977
    • H-N(3)
    • Q408925
    • Q1661369
    • hydrido-1kappaH-trinitrogen(2N--N)hydrogen trinitride(1-)
    • 231-965-8

  • Applications

    Hydrazoic acid (CAS 7782-79-8) is primarily used as a precursor to azide compounds and azide salts, enabling azidation steps in organic synthesis and the preparation of azide-functionalized intermediates for diverse chemical routes. In polymer chemistry and materials science, it is used to introduce azide functionalities into polymers and to support CuAAC-type click reactions for crosslinking and surface modification. In coatings, inks, and surface engineering, azide chemistry is used to functionalize substrates and enable rapid, robust bonding. In pharmaceuticals and fine chemicals, it is used as a precursor to azide-containing intermediates and to facilitate synthetic routes toward specialty chemicals. In electronics and advanced materials, azide-functionalized surfaces enable functionalization and assembly via click chemistry.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 44.17
    methanol 90.36
    isopropanol 30.12
    water 94.29
    ethyl acetate 17.79
    n-propanol 29.16
    acetone 56.24
    n-butanol 19.88
    acetonitrile 56.36
    DMF 299.82
    toluene 5.98
    isobutanol 21.48
    1,4-dioxane 56.34
    methyl acetate 34.6
    THF 36.12
    2-butanone 33.37
    n-pentanol 16.16
    sec-butanol 22.61
    n-hexane 2.37
    ethylene glycol 47.15
    NMP 145.67
    cyclohexane 2.63
    DMSO 138.66
    n-butyl acetate 8.91
    n-octanol 9.43
    chloroform 8.94
    n-propyl acetate 12.6
    acetic acid 47.8
    dichloromethane 13.12
    cyclohexanone 25.16
    propylene glycol 31.21
    isopropyl acetate 9.62
    DMAc 239.72
    2-ethoxyethanol 49.87
    isopentanol 15.36
    n-heptane 2.24
    ethyl formate 22.24
    1,2-dichloroethane 13.27
    n-hexanol 9.61
    2-methoxyethanol 77.72
    isobutyl acetate 7.52
    tetrachloromethane 2.94
    n-pentyl acetate 7.48
    transcutol 62.6
    n-heptanol 6.78
    ethylbenzene 3.91
    MIBK 11.71
    2-propoxyethanol 27.02
    tert-butanol 30.89
    MTBE 20.64
    2-butoxyethanol 17.23
    propionic acid 32.82
    o-xylene 8.45
    formic acid 69.63
    diethyl ether 20.07
    m-xylene 5.36
    p-xylene 5.58
    chlorobenzene 5.56
    dimethyl carbonate 26.49
    n-octane 1.1
    formamide 88.81
    cyclopentanone 30.32
    2-pentanone 18.76
    anisole 16.08
    cyclopentyl methyl ether 17.08
    gamma-butyrolactone 39.12
    1-methoxy-2-propanol 47.87
    pyridine 29.35
    3-pentanone 20.08
    furfural 46.02
    n-dodecane 1.19
    diethylene glycol 38.58
    diisopropyl ether 5.46
    tert-amyl alcohol 23.44
    acetylacetone 21.4
    n-hexadecane 1.22
    acetophenone 17.22
    methyl propionate 27.06
    isopentyl acetate 7.66
    trichloroethylene 14.61
    n-nonanol 8.55
    cyclohexanol 14.8
    benzyl alcohol 16.41
    2-ethylhexanol 6.48
    isooctanol 5.82
    dipropyl ether 9.71
    1,2-dichlorobenzene 5.9
    ethyl lactate 14.11
    propylene carbonate 18.6
    n-methylformamide 100.42
    2-pentanol 12.13
    n-pentane 2.85
    1-propoxy-2-propanol 19.08
    1-methoxy-2-propyl acetate 14.24
    2-(2-methoxypropoxy) propanol 26.23
    mesitylene 4.05
    ε-caprolactone 23.43
    p-cymene 4.0
    epichlorohydrin 31.25
    1,1,1-trichloroethane 6.4
    2-aminoethanol 48.11
    morpholine-4-carbaldehyde 123.83
    sulfolane 52.52
    2,2,4-trimethylpentane 1.81
    2-methyltetrahydrofuran 23.98
    n-hexyl acetate 10.55
    isooctane 1.05
    2-(2-butoxyethoxy)ethanol 26.83
    sec-butyl acetate 7.43
    tert-butyl acetate 10.11
    decalin 1.66
    glycerin 51.39
    diglyme 54.69
    acrylic acid 42.73
    isopropyl myristate 5.56
    n-butyric acid 19.3
    acetyl acetate 11.2
    di(2-ethylhexyl) phthalate 7.81
    ethyl propionate 13.95
    nitromethane 92.47
    1,2-diethoxyethane 17.14
    benzonitrile 14.25
    trioctyl phosphate 5.7
    1-bromopropane 7.45
    gamma-valerolactone 58.16
    n-decanol 6.95
    triethyl phosphate 8.17
    4-methyl-2-pentanol 7.75
    propionitrile 29.71
    vinylene carbonate 21.9
    1,1,2-trichlorotrifluoroethane 38.46
    DMS 15.7
    cumene 3.73
    2-octanol 5.05
    2-hexanone 14.07
    octyl acetate 7.53
    limonene 5.69
    1,2-dimethoxyethane 70.28
    ethyl orthosilicate 7.51
    tributyl phosphate 6.88
    diacetone alcohol 19.04
    N,N-dimethylaniline 18.02
    acrylonitrile 41.61
    aniline 15.21
    1,3-propanediol 37.92
    bromobenzene 3.55
    dibromomethane 7.47
    1,1,2,2-tetrachloroethane 13.69
    2-methyl-cyclohexyl acetate 7.95
    tetrabutyl urea 12.65
    diisobutyl methanol 4.97
    2-phenylethanol 10.22
    styrene 5.17
    dioctyl adipate 9.6
    dimethyl sulfate 44.21
    ethyl butyrate 9.25
    methyl lactate 27.58
    butyl lactate 10.05
    diethyl carbonate 8.05
    propanediol butyl ether 21.36
    triethyl orthoformate 9.13
    p-tert-butyltoluene 3.89
    methyl 4-tert-butylbenzoate 15.84
    morpholine 61.35
    tert-butylamine 16.86
    n-dodecanol 5.82
    dimethoxymethane 75.65
    ethylene carbonate 17.44
    cyrene 27.69
    2-ethoxyethyl acetate 13.35
    2-ethylhexyl acetate 6.41
    1,2,4-trichlorobenzene 8.36
    4-methylpyridine 27.91
    dibutyl ether 8.14
    2,6-dimethyl-4-heptanol 4.97
    DEF 49.59
    dimethyl isosorbide 27.51
    tetrachloroethylene 10.18
    eugenol 17.72
    triacetin 16.99
    span 80 17.31
    1,4-butanediol 24.54
    1,1-dichloroethane 9.12
    2-methyl-1-pentanol 12.99
    methyl formate 66.98
    2-methyl-1-butanol 17.3
    n-decane 1.59
    butyronitrile 18.07
    3,7-dimethyl-1-octanol 8.18
    1-chlorooctane 3.89
    1-chlorotetradecane 2.32
    n-nonane 1.52
    undecane 1.33
    tert-butylcyclohexane 1.59
    cyclooctane 1.22
    cyclopentanol 18.65
    tetrahydropyran 23.61
    tert-amyl methyl ether 17.9
    2,5,8-trioxanonane 43.75
    1-hexene 5.29
    2-isopropoxyethanol 28.15
    2,2,2-trifluoroethanol 35.74
    methyl butyrate 17.59

    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