Methyldichloroarsine

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  • Identifiers

    CAS number
    593-89-5

    Molecular formula
    CH3AsCl2

    SMILES
    C[As](Cl)Cl

    Safety labels

    Acute Toxic
    Acute Toxic

  • Odor profile

    Fragrance
    Fishy 55.17%
    Odorless 43.01%
    Cheesy 32.56%
    Ripe 31.06%
    Sweet 24.6%
    Oily 20.17%
    Fresh 16.06%
    Musty 15.7%
    Animal 15.53%
    Mint 14.96%

     

  • Properties

    pKa est.
    6.48 (neutral)

    Molecular weight
    160.86 g/mol

    Flash point

    • 46.53 ˚C est.

  • Synonyms

    • METHYLDICHLOROARSINE
    • Methyldichlorarsine
    • Dichloromethylarsine
    • Methylarsine dichloride
    • Arsine, dichloromethyl-
    • Arsonous dichloride, methyl-
    • 593-89-5
    • Methylarsonous dichloride
    • dichloro(methyl)arsane
    • Arsonous dichloride, As-methyl-
    • Methyl dichloroarsine
    • TL 294
    • BRN 1731061
    • DTXSID0060480
    • NA1556
    • Methyldichlorarsin
    • Arsine, dichloromethyl
    • Arsonous dichloride, methyl
    • SCHEMBL898232
    • DTXCID6042604
    • NA155
    • ARSENOUS DICHLORIDE, METHYL-
    • Methyldichloroarsine [NA1556] [Poison]
    • NS00126183
    • Q2630503
    • 695-189-5

  • Applications

    Methyldichloroarsine, CAS 593-89-5, is a highly toxic arsenic compound historically used as a chemical warfare agent. In contemporary practice, publicly applicable industrial uses are extremely limited and tightly regulated. It may be employed in controlled research settings as an intermediate in the synthesis of organoarsenic compounds and in studies related to detection, decontamination, and protective equipment development, under strict regulatory controls. Additionally, it can serve as a precursor in licensed, small-scale synthesis of organoarsenics in specialized laboratories, again governed by local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 118.65
    methanol 143.91
    isopropanol 103.48
    water 20.95
    ethyl acetate 131.21
    n-propanol 100.01
    acetone 286.76
    n-butanol 101.42
    acetonitrile 140.08
    DMF 378.18
    toluene 147.84
    isobutanol 82.79
    1,4-dioxane 335.18
    methyl acetate 149.08
    THF 438.63
    2-butanone 185.22
    n-pentanol 82.07
    sec-butanol 95.76
    n-hexane 46.92
    ethylene glycol 60.74
    NMP 414.41
    cyclohexane 99.32
    DMSO 391.61
    n-butyl acetate 130.2
    n-octanol 102.17
    chloroform 270.38
    n-propyl acetate 109.18
    acetic acid 153.15
    dichloromethane 232.48
    cyclohexanone 316.74
    propylene glycol 60.47
    isopropyl acetate 108.24
    DMAc 353.66
    2-ethoxyethanol 143.46
    isopentanol 87.23
    n-heptane 70.35
    ethyl formate 111.75
    1,2-dichloroethane 180.14
    n-hexanol 103.55
    2-methoxyethanol 214.1
    isobutyl acetate 87.41
    tetrachloromethane 93.03
    n-pentyl acetate 123.54
    transcutol 295.18
    n-heptanol 88.07
    ethylbenzene 77.2
    MIBK 121.65
    2-propoxyethanol 178.09
    tert-butanol 123.39
    MTBE 119.83
    2-butoxyethanol 138.07
    propionic acid 99.65
    o-xylene 129.28
    formic acid 85.05
    diethyl ether 153.32
    m-xylene 116.34
    p-xylene 102.12
    chlorobenzene 150.77
    dimethyl carbonate 104.06
    n-octane 35.22
    formamide 120.89
    cyclopentanone 359.53
    2-pentanone 170.46
    anisole 151.23
    cyclopentyl methyl ether 227.93
    gamma-butyrolactone 282.05
    1-methoxy-2-propanol 170.66
    pyridine 227.06
    3-pentanone 157.99
    furfural 318.33
    n-dodecane 28.0
    diethylene glycol 161.14
    diisopropyl ether 79.51
    tert-amyl alcohol 104.27
    acetylacetone 234.04
    n-hexadecane 30.7
    acetophenone 160.87
    methyl propionate 131.33
    isopentyl acetate 117.01
    trichloroethylene 275.29
    n-nonanol 94.32
    cyclohexanol 155.74
    benzyl alcohol 117.84
    2-ethylhexanol 86.53
    isooctanol 77.31
    dipropyl ether 144.06
    1,2-dichlorobenzene 148.36
    ethyl lactate 73.5
    propylene carbonate 167.91
    n-methylformamide 151.21
    2-pentanol 88.05
    n-pentane 56.81
    1-propoxy-2-propanol 150.09
    1-methoxy-2-propyl acetate 153.82
    2-(2-methoxypropoxy) propanol 128.98
    mesitylene 92.11
    ε-caprolactone 217.58
    p-cymene 86.9
    epichlorohydrin 261.67
    1,1,1-trichloroethane 177.0
    2-aminoethanol 76.94
    morpholine-4-carbaldehyde 383.14
    sulfolane 370.29
    2,2,4-trimethylpentane 31.84
    2-methyltetrahydrofuran 250.49
    n-hexyl acetate 134.27
    isooctane 25.58
    2-(2-butoxyethoxy)ethanol 163.21
    sec-butyl acetate 89.54
    tert-butyl acetate 130.31
    decalin 43.92
    glycerin 94.94
    diglyme 297.51
    acrylic acid 102.91
    isopropyl myristate 84.89
    n-butyric acid 115.9
    acetyl acetate 119.7
    di(2-ethylhexyl) phthalate 78.37
    ethyl propionate 100.84
    nitromethane 251.68
    1,2-diethoxyethane 166.64
    benzonitrile 135.81
    trioctyl phosphate 65.18
    1-bromopropane 128.22
    gamma-valerolactone 392.13
    n-decanol 78.41
    triethyl phosphate 85.29
    4-methyl-2-pentanol 64.46
    propionitrile 96.34
    vinylene carbonate 156.83
    1,1,2-trichlorotrifluoroethane 212.89
    DMS 114.07
    cumene 65.12
    2-octanol 79.31
    2-hexanone 131.29
    octyl acetate 97.12
    limonene 121.36
    1,2-dimethoxyethane 260.75
    ethyl orthosilicate 85.76
    tributyl phosphate 69.69
    diacetone alcohol 145.26
    N,N-dimethylaniline 144.53
    acrylonitrile 115.37
    aniline 148.66
    1,3-propanediol 99.43
    bromobenzene 148.71
    dibromomethane 189.53
    1,1,2,2-tetrachloroethane 246.07
    2-methyl-cyclohexyl acetate 114.86
    tetrabutyl urea 103.86
    diisobutyl methanol 76.18
    2-phenylethanol 122.91
    styrene 96.88
    dioctyl adipate 105.81
    dimethyl sulfate 163.2
    ethyl butyrate 119.15
    methyl lactate 91.26
    butyl lactate 97.72
    diethyl carbonate 86.93
    propanediol butyl ether 125.1
    triethyl orthoformate 109.17
    p-tert-butyltoluene 90.23
    methyl 4-tert-butylbenzoate 154.78
    morpholine 277.16
    tert-butylamine 99.54
    n-dodecanol 70.01
    dimethoxymethane 244.97
    ethylene carbonate 136.93
    cyrene 166.88
    2-ethoxyethyl acetate 142.24
    2-ethylhexyl acetate 113.24
    1,2,4-trichlorobenzene 176.2
    4-methylpyridine 223.32
    dibutyl ether 116.96
    2,6-dimethyl-4-heptanol 76.18
    DEF 197.82
    dimethyl isosorbide 244.79
    tetrachloroethylene 187.61
    eugenol 147.25
    triacetin 144.58
    span 80 137.86
    1,4-butanediol 60.17
    1,1-dichloroethane 163.23
    2-methyl-1-pentanol 75.97
    methyl formate 150.01
    2-methyl-1-butanol 84.09
    n-decane 40.37
    butyronitrile 106.33
    3,7-dimethyl-1-octanol 89.68
    1-chlorooctane 84.96
    1-chlorotetradecane 48.55
    n-nonane 40.88
    undecane 32.33
    tert-butylcyclohexane 38.97
    cyclooctane 50.26
    cyclopentanol 165.56
    tetrahydropyran 256.71
    tert-amyl methyl ether 119.85
    2,5,8-trioxanonane 232.59
    1-hexene 79.53
    2-isopropoxyethanol 115.24
    2,2,2-trifluoroethanol 95.99
    methyl butyrate 122.5

    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