Mercuric cyanide

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  • Identifiers

    CAS number
    592-04-1

    Molecular formula
    C2HgN2

    SMILES
    C(#N)[Hg]C#N

    Safety labels

    Acute Toxic
    Acute Toxic

    Health Hazard
    Health

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Floral 28.85%
    Sweet 25.42%
    Sulfurous 25.02%
    Odorless 24.08%
    Pungent 23.27%
    Onion 19.08%
    Spicy 18.41%
    Burnt 18.25%
    Garlic 17.16%
    Dry 16.13%

     

  • Properties

    pKa est.
    13.53 (strong base)

    Molecular weight
    252.63 g/mol

    Melting point expt.

    • Decomposes at 320 °C

    Boiling point

    • Decomposes

    Flash point

    • 142.8 ˚C est.

    Solubility expt.

    • 1 g/13 ml water; 1 g/2 ml boiling water
    • 1 g /13 ml alcohol; 1 g/4 ml methanol
    • Slightly soluble in ether.
    • 9.3 G SOL IN 100 ML WATER @ 14 °C
    • For more Solubility (Complete) data for MERCURIC CYANIDE (8 total), please visit the HSDB record page.

  • Synonyms

    • MERCURIC CYANIDE
    • Mercury(II) cyanide
    • Dicyanomercury
    • 592-04-1
    • Mercury dicyanide
    • Cyanure de mercure
    • Cianurina
    • Mercury cyanide
    • Mercurius cyanatus
    • Hydrargyrum cyanatum
    • HSDB 1209
    • Hg(CN)2
    • EINECS 209-741-6
    • UNII-RWG7BD1032
    • BRN 4652800
    • RWG7BD1032
    • DTXSID3060457
    • Cyanure de mercure [French]
    • Mercury cyanide (Hg(CN)2)
    • MFCD00011037
    • UN1636
    • Quecksilber(II)-cyanid
    • Mercury(II) cyanide, 99%
    • SCHEMBL314257
    • [Hg(CN)2]
    • DTXCID7042562
    • CHEBI:36573
    • MERCURIC CYANIDE, (SOLID)
    • MERCURIC CYANIDE (HG(CN)2)
    • AKOS025211684
    • Mercury cyanide [UN1636] [Poison]
    • BP-30080
    • Q257127
    • Mercury(II) cyanide, purum p.a., >=98.0% (precipitation titration)

  • Applications

    Mercuric cyanide (CAS 592-04-1) is a highly toxic inorganic cyanide used primarily as an intermediate or precursor in specialized mercury-cyanide chemistry, including the synthesis of organomercury compounds and other mercury-containing materials; in research and analytical settings, it serves as a controlled cyanide source or reagent for qualitative and quantitative analyses; it appears in niche inorganic/materials chemistry workflows involving cyanide transfer reactions and the formation of mercury-cyanide complexes; and its use occurs in limited industrial specialty chemical manufacturing under strict regulatory controls.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 22.7
    methanol 29.98
    isopropanol 17.53
    water 5.86
    ethyl acetate 29.08
    n-propanol 19.83
    acetone 73.16
    n-butanol 15.51
    acetonitrile 48.9
    DMF 190.57
    toluene 12.84
    isobutanol 15.16
    1,4-dioxane 66.5
    methyl acetate 42.7
    THF 122.5
    2-butanone 44.56
    n-pentanol 17.94
    sec-butanol 15.05
    n-hexane 4.92
    ethylene glycol 41.37
    NMP 252.82
    cyclohexane 9.29
    DMSO 227.02
    n-butyl acetate 35.6
    n-octanol 20.8
    chloroform 67.5
    n-propyl acetate 31.9
    acetic acid 61.96
    dichloromethane 64.97
    cyclohexanone 68.36
    propylene glycol 28.11
    isopropyl acetate 22.29
    DMAc 161.05
    2-ethoxyethanol 46.25
    isopentanol 13.8
    n-heptane 10.54
    ethyl formate 32.25
    1,2-dichloroethane 48.91
    n-hexanol 23.3
    2-methoxyethanol 62.46
    isobutyl acetate 23.28
    tetrachloromethane 18.39
    n-pentyl acetate 27.63
    transcutol 121.84
    n-heptanol 18.16
    ethylbenzene 11.38
    MIBK 25.8
    2-propoxyethanol 55.37
    tert-butanol 22.5
    MTBE 19.18
    2-butoxyethanol 39.68
    propionic acid 35.06
    o-xylene 15.35
    formic acid 48.32
    diethyl ether 21.32
    m-xylene 12.35
    p-xylene 16.65
    chlorobenzene 25.5
    dimethyl carbonate 38.5
    n-octane 4.88
    formamide 76.23
    cyclopentanone 115.96
    2-pentanone 32.74
    anisole 30.35
    cyclopentyl methyl ether 48.27
    gamma-butyrolactone 115.66
    1-methoxy-2-propanol 47.25
    pyridine 59.27
    3-pentanone 35.07
    furfural 125.95
    n-dodecane 4.74
    diethylene glycol 68.82
    diisopropyl ether 11.33
    tert-amyl alcohol 17.94
    acetylacetone 58.8
    n-hexadecane 5.32
    acetophenone 48.38
    methyl propionate 37.86
    isopentyl acetate 30.91
    trichloroethylene 87.47
    n-nonanol 20.3
    cyclohexanol 23.85
    benzyl alcohol 31.39
    2-ethylhexanol 21.28
    isooctanol 15.68
    dipropyl ether 30.47
    1,2-dichlorobenzene 32.47
    ethyl lactate 31.18
    propylene carbonate 58.5
    n-methylformamide 78.12
    2-pentanol 12.58
    n-pentane 4.54
    1-propoxy-2-propanol 46.12
    1-methoxy-2-propyl acetate 45.36
    2-(2-methoxypropoxy) propanol 50.83
    mesitylene 10.6
    ε-caprolactone 57.47
    p-cymene 17.77
    epichlorohydrin 89.58
    1,1,1-trichloroethane 40.48
    2-aminoethanol 37.71
    morpholine-4-carbaldehyde 157.69
    sulfolane 200.71
    2,2,4-trimethylpentane 3.31
    2-methyltetrahydrofuran 57.7
    n-hexyl acetate 31.46
    isooctane 2.82
    2-(2-butoxyethoxy)ethanol 58.52
    sec-butyl acetate 20.92
    tert-butyl acetate 28.69
    decalin 5.97
    glycerin 53.89
    diglyme 106.47
    acrylic acid 51.13
    isopropyl myristate 20.39
    n-butyric acid 27.43
    acetyl acetate 32.7
    di(2-ethylhexyl) phthalate 26.29
    ethyl propionate 27.99
    nitromethane 120.73
    1,2-diethoxyethane 41.99
    benzonitrile 41.11
    trioctyl phosphate 20.83
    1-bromopropane 20.43
    gamma-valerolactone 119.17
    n-decanol 17.18
    triethyl phosphate 27.52
    4-methyl-2-pentanol 10.9
    propionitrile 29.31
    vinylene carbonate 57.79
    1,1,2-trichlorotrifluoroethane 115.99
    DMS 46.49
    cumene 11.53
    2-octanol 13.58
    2-hexanone 36.02
    octyl acetate 25.1
    limonene 26.38
    1,2-dimethoxyethane 73.6
    ethyl orthosilicate 24.52
    tributyl phosphate 23.16
    diacetone alcohol 41.49
    N,N-dimethylaniline 36.09
    acrylonitrile 47.87
    aniline 26.82
    1,3-propanediol 28.96
    bromobenzene 22.89
    dibromomethane 41.45
    1,1,2,2-tetrachloroethane 82.34
    2-methyl-cyclohexyl acetate 34.94
    tetrabutyl urea 42.96
    diisobutyl methanol 17.31
    2-phenylethanol 34.28
    styrene 14.76
    dioctyl adipate 37.24
    dimethyl sulfate 85.48
    ethyl butyrate 32.11
    methyl lactate 42.15
    butyl lactate 31.38
    diethyl carbonate 25.94
    propanediol butyl ether 41.38
    triethyl orthoformate 29.24
    p-tert-butyltoluene 17.67
    methyl 4-tert-butylbenzoate 48.05
    morpholine 69.3
    tert-butylamine 16.51
    n-dodecanol 15.47
    dimethoxymethane 70.51
    ethylene carbonate 43.15
    cyrene 77.57
    2-ethoxyethyl acetate 38.25
    2-ethylhexyl acetate 27.41
    1,2,4-trichlorobenzene 46.74
    4-methylpyridine 45.01
    dibutyl ether 22.16
    2,6-dimethyl-4-heptanol 17.31
    DEF 55.79
    dimethyl isosorbide 99.01
    tetrachloroethylene 59.2
    eugenol 50.13
    triacetin 52.6
    span 80 48.74
    1,4-butanediol 21.85
    1,1-dichloroethane 30.98
    2-methyl-1-pentanol 15.61
    methyl formate 66.64
    2-methyl-1-butanol 13.26
    n-decane 6.19
    butyronitrile 22.83
    3,7-dimethyl-1-octanol 20.49
    1-chlorooctane 15.76
    1-chlorotetradecane 10.11
    n-nonane 5.89
    undecane 5.27
    tert-butylcyclohexane 5.28
    cyclooctane 4.47
    cyclopentanol 38.76
    tetrahydropyran 42.84
    tert-amyl methyl ether 19.74
    2,5,8-trioxanonane 93.96
    1-hexene 10.4
    2-isopropoxyethanol 36.0
    2,2,2-trifluoroethanol 49.75
    methyl butyrate 35.45

    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