Sulfur monochloride

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  • Identifiers

    CAS number
    10025-67-9

    Molecular formula
    Cl2S2

    SMILES
    S(SCl)Cl

    Safety labels

    Corrosive
    Corrosive

    Acute Toxic
    Acute Toxic

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Sulfurous 80.66%
    Onion 71.41%
    Garlic 64.98%
    Meaty 50.28%
    Alliaceous 49.88%
    Savory 47.16%
    Cooked 44.75%
    Roasted 41.87%
    Pungent 37.15%
    Cabbage 28.03%

     

    Flavor
    Onion 52.63%
    Sulfurous 48.91%
    Garlic 47.11%
    Meaty 42.19%
    Sulfury 41.07%
    Alliaceous 32.61%
    Sulfur 29.85%
    Cabbage 28.48%
    Cooked 27.28%
    Roasted 26.36%

     

    Odor impact est.
    High

    Odor threshold

    • Air: 0.77 ul/l; Odor safety class C; C= less than 50% of distracted persons perceive warning of TLV. /Hydrochloric acid/
    • Odor low: 7.0 mg/cu m; Odor high: 49.0 mg/cu m; strong irritating odor; Irritating concn= 49.00 mg/cu m. /Hydrochloric acid/

  • Properties

    XLogP3-AA
    2.5

    pKa est.
    -17.25 (strong acid)

    Molecular weight
    135.0 g/mol

    Melting point expt.

    • -112 °F (USCG, 1999)
    • -77 °C
    • -112 °F
    • -107 °F

    Boiling point

    • 280 °F at 760 mmHg (USCG, 1999)
    • 137 °C
    • When distilled at its atmospheric boiling point, it undergoes some decomposition to the dichloride, but decomposition is avoided with distillation at about 6.7 kPa (50 mmHg).
    • 138 °C
    • 280 °F

    Flash point

    • 86.8 ˚C est.
    • 245 °F (USCG, 1999)
    • 245 °F
    • 266 °F (open cup); 245 °F (closed cup)
    • 118.5 °C c.c.

    Solubility expt.

    • Decomposes (NIOSH, 2024)
    • Sol in alc, benzene, ether, carbon disulfide, carbon tetrachloride, oils
    • Soluble in amyl acetate
    • Insoluble in water
    • Solubility in water: reaction
    • Decomposes

  • Synonyms

    • SULFUR MONOCHLORIDE
    • Disulfur dichloride
    • Sulfur subchloride
    • Chlorosulfane
    • 10025-67-9
    • Thiosulfurous dichloride
    • Disulphur dichloride
    • Siarki chlorek
    • Sulfur chloride (S2Cl2)
    • chlorosulfanyl thiohypochlorite
    • Sulfur chloride (di)
    • Siarki chlorek [Polish]
    • NJ7YR2EV0D
    • Sulfur chloride(di)
    • HSDB 826
    • EINECS 233-036-2
    • 12771-08-3
    • SULFUR CHLORIDE [MI]
    • DTXSID3042427
    • SULFUR MONOCHLORIDE [HSDB]
    • EC 233-036-2
    • SIARKI CHLOREK (POLISH)
    • Chlorschwefel
    • ClSSCl
    • SULPHUR CHLORIDES
    • Sulfur monochloride, CP
    • S2Cl2
    • UNII-NJ7YR2EV0D
    • Sulfur monochloride, 98%
    • S2 Cl2
    • UN 1828 (Salt/Mix)
    • DTXCID1022427
    • DTXSID10192708
    • SULPHUR CHLORIDE (S2CL2)
    • Sulfur monochloride (ACGIH:OSHA)
    • SULFUR MONOCHLORIDE (S2CL2)
    • DB14647
    • BP-30228
    • NS00005213
    • Q414657
    • 233-036-2

  • Applications

    Sulfur monochloride (CAS 10025-67-9) is primarily used as a sulfurization and chlorination reagent in organic synthesis, providing sulfur incorporation to form functionalities such as thioethers, thiols, thioesters, and polysulfides. In industrial manufacturing it serves as an intermediate for organosulfur compounds and as a building block for specialty chemicals and polymer formulations. In polymers and plastics, it is used to prepare sulfur-containing monomers or to functionalize polymer precursors for sulfur-based crosslinking and additives. In coatings and inks, it furnishes routes to sulfur-containing intermediates that influence color, adhesion, and performance. In pharmaceuticals, it is employed as a synthetic intermediate for sulfur-containing compounds under controlled conditions. Finally, in research and development, it supports exploration of new sulfur chemistries and materials, with handling and use governed by local regulations.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 33.9
    methanol 34.4
    isopropanol 28.25
    water 0.61
    ethyl acetate 79.49
    n-propanol 30.72
    acetone 173.01
    n-butanol 34.11
    acetonitrile 69.24
    DMF 334.15
    toluene 85.86
    isobutanol 24.98
    1,4-dioxane 194.6
    methyl acetate 93.3
    THF 309.42
    2-butanone 109.87
    n-pentanol 33.28
    sec-butanol 29.48
    n-hexane 18.5
    ethylene glycol 18.0
    NMP 440.85
    cyclohexane 63.68
    DMSO 404.22
    n-butyl acetate 124.72
    n-octanol 45.1
    chloroform 254.25
    n-propyl acetate 83.13
    acetic acid 90.47
    dichloromethane 237.31
    cyclohexanone 234.65
    propylene glycol 14.3
    isopropyl acetate 64.52
    DMAc 253.81
    2-ethoxyethanol 72.7
    isopentanol 34.73
    n-heptane 48.01
    ethyl formate 70.9
    1,2-dichloroethane 180.75
    n-hexanol 44.45
    2-methoxyethanol 97.51
    isobutyl acetate 54.23
    tetrachloromethane 79.16
    n-pentyl acetate 91.22
    transcutol 291.76
    n-heptanol 38.32
    ethylbenzene 54.81
    MIBK 69.64
    2-propoxyethanol 88.74
    tert-butanol 42.93
    MTBE 63.86
    2-butoxyethanol 71.47
    propionic acid 41.17
    o-xylene 73.43
    formic acid 31.14
    diethyl ether 73.68
    m-xylene 62.01
    p-xylene 76.34
    chlorobenzene 132.45
    dimethyl carbonate 57.91
    n-octane 21.24
    formamide 68.18
    cyclopentanone 277.96
    2-pentanone 98.53
    anisole 110.11
    cyclopentyl methyl ether 167.69
    gamma-butyrolactone 249.99
    1-methoxy-2-propanol 71.21
    pyridine 226.52
    3-pentanone 92.43
    furfural 321.19
    n-dodecane 14.98
    diethylene glycol 69.49
    diisopropyl ether 37.89
    tert-amyl alcohol 39.29
    acetylacetone 163.23
    n-hexadecane 17.49
    acetophenone 138.98
    methyl propionate 76.1
    isopentyl acetate 103.05
    trichloroethylene 373.48
    n-nonanol 43.96
    cyclohexanol 68.66
    benzyl alcohol 78.38
    2-ethylhexanol 51.11
    isooctanol 35.29
    dipropyl ether 106.17
    1,2-dichlorobenzene 145.85
    ethyl lactate 38.91
    propylene carbonate 128.4
    n-methylformamide 102.35
    2-pentanol 30.87
    n-pentane 20.2
    1-propoxy-2-propanol 91.41
    1-methoxy-2-propyl acetate 117.04
    2-(2-methoxypropoxy) propanol 90.78
    mesitylene 52.73
    ε-caprolactone 174.11
    p-cymene 72.51
    epichlorohydrin 258.28
    1,1,1-trichloroethane 176.05
    2-aminoethanol 22.93
    morpholine-4-carbaldehyde 328.89
    sulfolane 395.83
    2,2,4-trimethylpentane 13.04
    2-methyltetrahydrofuran 195.86
    n-hexyl acetate 97.61
    isooctane 10.76
    2-(2-butoxyethoxy)ethanol 107.67
    sec-butyl acetate 57.72
    tert-butyl acetate 86.32
    decalin 27.4
    glycerin 28.82
    diglyme 274.7
    acrylic acid 53.17
    isopropyl myristate 57.35
    n-butyric acid 60.33
    acetyl acetate 80.35
    di(2-ethylhexyl) phthalate 46.3
    ethyl propionate 68.32
    nitromethane 208.86
    1,2-diethoxyethane 160.67
    benzonitrile 126.56
    trioctyl phosphate 37.19
    1-bromopropane 94.93
    gamma-valerolactone 295.61
    n-decanol 36.2
    triethyl phosphate 62.64
    4-methyl-2-pentanol 24.71
    propionitrile 50.9
    vinylene carbonate 121.42
    1,1,2-trichlorotrifluoroethane 199.72
    DMS 94.5
    cumene 42.24
    2-octanol 35.06
    2-hexanone 94.52
    octyl acetate 63.15
    limonene 112.37
    1,2-dimethoxyethane 196.25
    ethyl orthosilicate 64.58
    tributyl phosphate 47.16
    diacetone alcohol 84.65
    N,N-dimethylaniline 111.57
    acrylonitrile 79.21
    aniline 83.11
    1,3-propanediol 34.59
    bromobenzene 146.26
    dibromomethane 179.23
    1,1,2,2-tetrachloroethane 294.14
    2-methyl-cyclohexyl acetate 90.27
    tetrabutyl urea 89.58
    diisobutyl methanol 51.11
    2-phenylethanol 85.29
    styrene 74.38
    dioctyl adipate 81.59
    dimethyl sulfate 128.07
    ethyl butyrate 109.13
    methyl lactate 47.62
    butyl lactate 63.77
    diethyl carbonate 69.99
    propanediol butyl ether 63.28
    triethyl orthoformate 90.76
    p-tert-butyltoluene 70.34
    methyl 4-tert-butylbenzoate 115.03
    morpholine 184.52
    tert-butylamine 33.69
    n-dodecanol 31.85
    dimethoxymethane 143.7
    ethylene carbonate 90.62
    cyrene 107.93
    2-ethoxyethyl acetate 115.8
    2-ethylhexyl acetate 101.87
    1,2,4-trichlorobenzene 187.44
    4-methylpyridine 190.16
    dibutyl ether 89.82
    2,6-dimethyl-4-heptanol 51.11
    DEF 166.14
    dimethyl isosorbide 213.92
    tetrachloroethylene 243.39
    eugenol 102.74
    triacetin 117.14
    span 80 82.86
    1,4-butanediol 20.64
    1,1-dichloroethane 122.17
    2-methyl-1-pentanol 33.66
    methyl formate 99.34
    2-methyl-1-butanol 29.86
    n-decane 23.08
    butyronitrile 57.04
    3,7-dimethyl-1-octanol 50.47
    1-chlorooctane 57.57
    1-chlorotetradecane 30.3
    n-nonane 24.84
    undecane 17.94
    tert-butylcyclohexane 20.78
    cyclooctane 32.87
    cyclopentanol 75.25
    tetrahydropyran 161.31
    tert-amyl methyl ether 67.49
    2,5,8-trioxanonane 194.93
    1-hexene 38.95
    2-isopropoxyethanol 59.36
    2,2,2-trifluoroethanol 47.46
    methyl butyrate 97.25

    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