Arsenic trichloride

Overview IFRA Request a quote

  • Identifiers

    CAS number
    7784-34-1

    Molecular formula
    AsCl3

    SMILES
    Cl[As](Cl)Cl

    Safety labels

    Corrosive
    Corrosive

    Acute Toxic
    Acute Toxic

    Health Hazard
    Health

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Odorless 55.7%
    Fishy 43.69%
    Sweet 26.55%
    Ripe 20.99%
    Cheesy 18.6%
    Oily 16.41%
    Animal 15.77%
    Fresh 13.88%
    Musty 13.82%
    Clean 13.69%

     

  • Properties

    pKa est.
    -23.27 (strong acid)

    Molecular weight
    181.28 g/mol

    Melting point expt.

    • 3.2 °F (EPA, 1998)
    • -16 °C

    Boiling point

    • 266.4 °F at 760 mmHg (USCG, 1999)
    • 130.5 °C
    • 130 °C

    Flash point

    • 63.18 ˚C est.

    Solubility expt.

    • One mol can be dissolved in 9 moles of water; miscible with chloroform, carbon tetrachloride, iodine, sulfur, alkali iodides, oils and fats.
    • Sol in hydrogen bromide, hydrochloric acid, alcohol, and phosphorus trichloride.
    • Sol in ether

  • Synonyms

    • ARSENIC TRICHLORIDE
    • Arsenic(III) chloride
    • Trichloroarsine
    • Arsenic chloride
    • Arsenous trichloride
    • 7784-34-1
    • Arsenous chloride
    • Arsenious chloride
    • AsCl3
    • Chlorure arsenieux
    • Chlorure D'arsenic
    • trichloroarsane
    • Fuming liquid arsenic
    • Trichlorure D'arsenic
    • Caustic arsenic chloride
    • Arsenic(III) trichloride
    • Arsenic chloride (AsCl3)
    • HSDB 422
    • EINECS 232-059-5
    • UNII-5XW39M1300
    • 5XW39M1300
    • CHEBI:63952
    • Chlorure arsenieux [French]
    • Chlorure d'arsenic [French]
    • Trichlorure d'arsenic [French]
    • UN1560
    • Arsentrichlorid
    • Arsenicum Muriaticum
    • Arsenic(3+) chloride
    • ARSENIC TRICHLORIDE [MI]
    • CHEMBL5413763
    • DTXSID3042556
    • ARSENIC TRICHLORIDE [HSDB]
    • ARSENIC TRICHLORIDE, (LIQUID)
    • UN 1560
    • Arsenic trichloride [UN1560] [Poison]
    • Q411245
    • Arsenic(III) chloride, 99.99% trace metals basis
    • ARSENIC CHLORIDE (ARSENIC TRICHLORIDE, LIQUID)
    • 232-059-5

  • Applications

    Arsenic trichloride, CAS number: 7784-34-1, is used as an intermediate to synthesize organoarsenic compounds for pesticides and wood preservatives; it is also employed as a chlorinating agent to introduce arsenic into organic molecules and as a precursor for inorganic arsenic acids and arsenates; in certain industrial contexts, arsenic-containing pigments and additives for paints, plastics, and wood have been derived from these intermediates; subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 247.37
    methanol 271.33
    isopropanol 250.96
    water 19.76
    ethyl acetate 250.13
    n-propanol 210.83
    acetone 466.13
    n-butanol 231.07
    acetonitrile 177.96
    DMF 946.84
    toluene 236.68
    isobutanol 178.61
    1,4-dioxane 499.31
    methyl acetate 219.37
    THF 851.41
    2-butanone 272.67
    n-pentanol 168.84
    sec-butanol 213.81
    n-hexane 106.12
    ethylene glycol 133.13
    NMP 753.49
    cyclohexane 174.69
    DMSO 853.34
    n-butyl acetate 201.06
    n-octanol 172.17
    chloroform 556.24
    n-propyl acetate 182.74
    acetic acid 277.31
    dichloromethane 500.47
    cyclohexanone 407.72
    propylene glycol 131.89
    isopropyl acetate 214.39
    DMAc 707.39
    2-ethoxyethanol 281.97
    isopentanol 201.12
    n-heptane 120.75
    ethyl formate 198.61
    1,2-dichloroethane 372.11
    n-hexanol 188.73
    2-methoxyethanol 485.99
    isobutyl acetate 135.99
    tetrachloromethane 232.12
    n-pentyl acetate 200.72
    transcutol 427.29
    n-heptanol 174.95
    ethylbenzene 134.07
    MIBK 224.52
    2-propoxyethanol 323.08
    tert-butanol 340.84
    MTBE 312.09
    2-butoxyethanol 261.94
    propionic acid 162.59
    o-xylene 199.58
    formic acid 150.0
    diethyl ether 335.03
    m-xylene 201.54
    p-xylene 177.12
    chlorobenzene 243.54
    dimethyl carbonate 206.81
    n-octane 69.6
    formamide 215.79
    cyclopentanone 502.76
    2-pentanone 303.3
    anisole 245.69
    cyclopentyl methyl ether 450.07
    gamma-butyrolactone 451.52
    1-methoxy-2-propanol 416.5
    pyridine 367.96
    3-pentanone 248.75
    furfural 495.0
    n-dodecane 52.22
    diethylene glycol 301.36
    diisopropyl ether 184.09
    tert-amyl alcohol 266.07
    acetylacetone 379.53
    n-hexadecane 57.61
    acetophenone 233.04
    methyl propionate 250.33
    isopentyl acetate 177.79
    trichloroethylene 535.81
    n-nonanol 160.7
    cyclohexanol 280.26
    benzyl alcohol 196.74
    2-ethylhexanol 153.35
    isooctanol 153.2
    dipropyl ether 253.52
    1,2-dichlorobenzene 242.33
    ethyl lactate 126.26
    propylene carbonate 277.69
    n-methylformamide 297.1
    2-pentanol 210.66
    n-pentane 139.69
    1-propoxy-2-propanol 279.08
    1-methoxy-2-propyl acetate 235.47
    2-(2-methoxypropoxy) propanol 216.02
    mesitylene 168.77
    ε-caprolactone 316.17
    p-cymene 131.91
    epichlorohydrin 466.54
    1,1,1-trichloroethane 403.12
    2-aminoethanol 161.86
    morpholine-4-carbaldehyde 635.17
    sulfolane 687.75
    2,2,4-trimethylpentane 78.67
    2-methyltetrahydrofuran 474.03
    n-hexyl acetate 217.75
    isooctane 71.13
    2-(2-butoxyethoxy)ethanol 264.2
    sec-butyl acetate 143.05
    tert-butyl acetate 275.4
    decalin 80.28
    glycerin 204.29
    diglyme 465.03
    acrylic acid 170.55
    isopropyl myristate 134.06
    n-butyric acid 234.56
    acetyl acetate 203.95
    di(2-ethylhexyl) phthalate 121.74
    ethyl propionate 176.95
    nitromethane 372.87
    1,2-diethoxyethane 252.53
    benzonitrile 198.7
    trioctyl phosphate 107.8
    1-bromopropane 273.23
    gamma-valerolactone 548.98
    n-decanol 132.71
    triethyl phosphate 129.73
    4-methyl-2-pentanol 149.83
    propionitrile 157.22
    vinylene carbonate 249.81
    1,1,2-trichlorotrifluoroethane 413.26
    DMS 168.42
    cumene 112.41
    2-octanol 155.22
    2-hexanone 200.11
    octyl acetate 158.57
    limonene 182.99
    1,2-dimethoxyethane 472.79
    ethyl orthosilicate 136.72
    tributyl phosphate 108.07
    diacetone alcohol 300.74
    N,N-dimethylaniline 252.54
    acrylonitrile 192.55
    aniline 247.39
    1,3-propanediol 224.98
    bromobenzene 260.92
    dibromomethane 396.59
    1,1,2,2-tetrachloroethane 500.1
    2-methyl-cyclohexyl acetate 164.43
    tetrabutyl urea 163.79
    diisobutyl methanol 139.38
    2-phenylethanol 186.28
    styrene 167.29
    dioctyl adipate 167.85
    dimethyl sulfate 357.14
    ethyl butyrate 184.06
    methyl lactate 189.86
    butyl lactate 164.68
    diethyl carbonate 134.02
    propanediol butyl ether 213.94
    triethyl orthoformate 172.62
    p-tert-butyltoluene 149.35
    methyl 4-tert-butylbenzoate 266.02
    morpholine 506.09
    tert-butylamine 265.42
    n-dodecanol 115.8
    dimethoxymethane 654.84
    ethylene carbonate 214.38
    cyrene 249.04
    2-ethoxyethyl acetate 215.8
    2-ethylhexyl acetate 164.5
    1,2,4-trichlorobenzene 273.01
    4-methylpyridine 375.33
    dibutyl ether 179.94
    2,6-dimethyl-4-heptanol 139.38
    DEF 391.7
    dimethyl isosorbide 373.36
    tetrachloroethylene 392.42
    eugenol 247.1
    triacetin 209.52
    span 80 227.27
    1,4-butanediol 121.71
    1,1-dichloroethane 344.27
    2-methyl-1-pentanol 149.36
    methyl formate 268.21
    2-methyl-1-butanol 184.97
    n-decane 75.38
    butyronitrile 179.46
    3,7-dimethyl-1-octanol 148.38
    1-chlorooctane 147.71
    1-chlorotetradecane 86.14
    n-nonane 75.98
    undecane 60.87
    tert-butylcyclohexane 83.14
    cyclooctane 92.49
    cyclopentanol 319.77
    tetrahydropyran 415.71
    tert-amyl methyl ether 283.72
    2,5,8-trioxanonane 358.67
    1-hexene 166.36
    2-isopropoxyethanol 217.83
    2,2,2-trifluoroethanol 168.89
    methyl butyrate 207.74

    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