1,2-Dimercaptocyclopentane

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  • Identifiers

    CAS number
    89211-39-2

    Molecular formula
    C5H10S2

    SMILES
    C1CC(C(C1)S)S

    Safety labels

  • Odor profile

    Fragrance
    Meaty 80.04%
    Sulfurous 74.96%
    Roasted 59.11%
    Onion 45.76%
    Savory 43.36%
    Beefy 42.99%
    Garlic 40.94%
    Cooked 40.49%
    Alliaceous 36.87%
    Burnt 35.95%

     

    Flavor
    Sulfurous 55.99%
    Roasted 40.97%
    Meaty 40.79%
    Onion 35.09%
    Egg 30.91%
    Sulfury 30.25%
    Ammoniacal 29.05%
    Fishy 28.35%
    Garlic 26.64%
    Alliaceous 26.42%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    1.8

    pKa est.
    7.26 (neutral)

    Molecular weight
    134.3 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderately fast

    Boiling point est.
    207°C

    Flash point

    • 61.43 ˚C est.

  • Synonyms

    • 1,2-dimercaptocyclopentane
    • 89211-39-2
    • Cyclopentane-1,2-dithiol
    • SCHEMBL62317
    • SCHEMBL22163973
    • DTXSID80494842
    • YZVNURZNMBCWGG-UHFFFAOYSA-N
    • 89211-39-2

  • Applications

    1,2-Dimercaptocyclopentane (CAS 89211-39-2) is a difunctional thiol used primarily as a crosslinking or curing agent in epoxy and related polymer systems, where its two thiol groups enable thiol-epoxy or thiol-ene chemistries to form networks. It can function as a metal-chelating additive in coatings, inks, and metal-finishing formulations, helping stabilize metal ions and enhance formulation performance. It is also employed as an intermediate in the synthesis of organosulfur compounds for specialty chemicals and as a ligand or precursor in coordination chemistry and catalysis. In plastics and coatings, it may support polymer functionalization or stabilization via thiol-based chemistry, with use limited by formulation constraints and regulatory considerations.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 86.2
    methanol 109.49
    isopropanol 69.23
    water 1.06
    ethyl acetate 100.25
    n-propanol 77.93
    acetone 120.2
    n-butanol 79.92
    acetonitrile 82.32
    DMF 120.64
    toluene 57.46
    isobutanol 55.97
    1,4-dioxane 231.34
    methyl acetate 104.94
    THF 259.52
    2-butanone 107.56
    n-pentanol 55.44
    sec-butanol 65.62
    n-hexane 10.74
    ethylene glycol 27.74
    NMP 131.31
    cyclohexane 22.03
    DMSO 147.89
    n-butyl acetate 97.72
    n-octanol 52.16
    chloroform 297.52
    n-propyl acetate 67.8
    acetic acid 94.88
    dichloromethane 190.1
    cyclohexanone 140.39
    propylene glycol 40.89
    isopropyl acetate 74.33
    DMAc 134.39
    2-ethoxyethanol 98.45
    isopentanol 68.69
    n-heptane 19.81
    ethyl formate 59.58
    1,2-dichloroethane 115.69
    n-hexanol 80.08
    2-methoxyethanol 140.56
    isobutyl acetate 53.08
    tetrachloromethane 83.31
    n-pentyl acetate 68.56
    transcutol 348.83
    n-heptanol 60.39
    ethylbenzene 32.52
    MIBK 70.79
    2-propoxyethanol 134.08
    tert-butanol 88.52
    MTBE 82.91
    2-butoxyethanol 106.76
    propionic acid 71.4
    o-xylene 45.3
    formic acid 33.65
    diethyl ether 102.66
    m-xylene 42.0
    p-xylene 48.37
    chlorobenzene 92.51
    dimethyl carbonate 42.63
    n-octane 9.2
    formamide 54.05
    cyclopentanone 181.08
    2-pentanone 90.32
    anisole 83.24
    cyclopentyl methyl ether 107.74
    gamma-butyrolactone 164.09
    1-methoxy-2-propanol 115.8
    pyridine 162.95
    3-pentanone 78.95
    furfural 165.92
    n-dodecane 7.86
    diethylene glycol 105.48
    diisopropyl ether 39.35
    tert-amyl alcohol 72.46
    acetylacetone 134.39
    n-hexadecane 8.64
    acetophenone 81.56
    methyl propionate 72.01
    isopentyl acetate 81.48
    trichloroethylene 240.45
    n-nonanol 52.7
    cyclohexanol 69.91
    benzyl alcohol 69.23
    2-ethylhexanol 59.99
    isooctanol 50.89
    dipropyl ether 78.27
    1,2-dichlorobenzene 90.89
    ethyl lactate 41.44
    propylene carbonate 102.1
    n-methylformamide 61.43
    2-pentanol 59.84
    n-pentane 14.83
    1-propoxy-2-propanol 109.05
    1-methoxy-2-propyl acetate 106.63
    2-(2-methoxypropoxy) propanol 103.31
    mesitylene 31.89
    ε-caprolactone 121.44
    p-cymene 38.71
    epichlorohydrin 158.9
    1,1,1-trichloroethane 151.56
    2-aminoethanol 51.43
    morpholine-4-carbaldehyde 166.04
    sulfolane 190.16
    2,2,4-trimethylpentane 9.87
    2-methyltetrahydrofuran 151.33
    n-hexyl acetate 77.83
    isooctane 8.2
    2-(2-butoxyethoxy)ethanol 136.86
    sec-butyl acetate 53.76
    tert-butyl acetate 92.47
    decalin 12.61
    glycerin 62.85
    diglyme 235.21
    acrylic acid 65.7
    isopropyl myristate 45.03
    n-butyric acid 96.4
    acetyl acetate 93.77
    di(2-ethylhexyl) phthalate 43.78
    ethyl propionate 58.2
    nitromethane 124.13
    1,2-diethoxyethane 134.92
    benzonitrile 80.09
    trioctyl phosphate 32.76
    1-bromopropane 78.18
    gamma-valerolactone 188.48
    n-decanol 40.02
    triethyl phosphate 44.71
    4-methyl-2-pentanol 44.71
    propionitrile 76.27
    vinylene carbonate 95.8
    1,1,2-trichlorotrifluoroethane 146.97
    DMS 67.92
    cumene 28.69
    2-octanol 39.58
    2-hexanone 75.65
    octyl acetate 53.7
    limonene 52.87
    1,2-dimethoxyethane 166.7
    ethyl orthosilicate 47.03
    tributyl phosphate 36.88
    diacetone alcohol 103.67
    N,N-dimethylaniline 60.72
    acrylonitrile 86.27
    aniline 83.87
    1,3-propanediol 72.92
    bromobenzene 94.6
    dibromomethane 137.05
    1,1,2,2-tetrachloroethane 195.4
    2-methyl-cyclohexyl acetate 68.92
    tetrabutyl urea 46.13
    diisobutyl methanol 44.35
    2-phenylethanol 82.46
    styrene 43.33
    dioctyl adipate 60.64
    dimethyl sulfate 67.75
    ethyl butyrate 78.33
    methyl lactate 50.29
    butyl lactate 59.24
    diethyl carbonate 55.42
    propanediol butyl ether 82.76
    triethyl orthoformate 68.5
    p-tert-butyltoluene 41.7
    methyl 4-tert-butylbenzoate 90.4
    morpholine 195.72
    tert-butylamine 61.32
    n-dodecanol 32.3
    dimethoxymethane 105.86
    ethylene carbonate 79.56
    cyrene 87.43
    2-ethoxyethyl acetate 99.92
    2-ethylhexyl acetate 69.23
    1,2,4-trichlorobenzene 113.32
    4-methylpyridine 119.08
    dibutyl ether 64.67
    2,6-dimethyl-4-heptanol 44.35
    DEF 86.05
    dimethyl isosorbide 158.35
    tetrachloroethylene 163.71
    eugenol 86.37
    triacetin 96.62
    span 80 93.22
    1,4-butanediol 34.9
    1,1-dichloroethane 121.42
    2-methyl-1-pentanol 53.43
    methyl formate 47.07
    2-methyl-1-butanol 61.38
    n-decane 12.64
    butyronitrile 74.12
    3,7-dimethyl-1-octanol 53.84
    1-chlorooctane 37.14
    1-chlorotetradecane 18.31
    n-nonane 11.48
    undecane 9.53
    tert-butylcyclohexane 12.83
    cyclooctane 10.37
    cyclopentanol 79.08
    tetrahydropyran 160.12
    tert-amyl methyl ether 64.38
    2,5,8-trioxanonane 181.83
    1-hexene 32.66
    2-isopropoxyethanol 79.36
    2,2,2-trifluoroethanol 50.05
    methyl butyrate 69.62

    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