Pionin

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  • Identifiers

    CAS number
    15763-48-1

    Molecular formula
    C23H39IN2S2

    SMILES
    CCCCCCCN\1C(=CS/C1=C/C2=[N+](C(=CS2)C)CCCCCCC)C.[I-]

    Safety labels

  • Odor profile

    Fragrance
    Meaty 54.9%
    Roasted 54.83%
    Nutty 38.5%
    Savory 32.23%
    Cooked 30.84%
    Fatty 29.65%
    Herbal 24.33%
    Burnt 21.96%
    Beefy 21.9%
    Spicy 20.41%

     

    Flavor
    Herbal 33.76%
    Bitter 23.14%
    Bland 20.99%
    Carrot 20.9%
    Pepper 20.8%
    Cedarleaf 20.65%
    Syrup 20.43%
    Green pepper 20.14%
    Tomato leaf 20.01%
    Delicate 19.72%

     

    Odor impact est.
    Medium

  • Properties

    pKa est.
    9.88 (weak base)

    Molecular weight
    534.6 g/mol

    Flash point

    • 212.62 ˚C est.

  • Synonyms

    • Pionin
    • Quaternium-73
    • Kankohso 201
    • 15763-48-1
    • 5X73DDS97A
    • NK-266
    • RefChem:1095622
    • 3-HEPTYL-2-[(3-HEPTYL-4-METHYL-3H-THIAZOL-2-YLIDENE)METHYL]-4-METHYLTHIAZOLIUM IODIDE
    • Thiazolium, 3-heptyl-2-[(3-heptyl-4-methyl-2(3H)-thiazolylidene)methyl]-4-methyl-, iodide (1:1)
    • 3-Heptyl-2-((3-heptyl-4-methyl-3H-thiazol-2-ylidene)methyl)-4-methylthiazolium iodide
    • EINECS 239-852-5
    • 3-Heptyl-2-((3-heptyl-4-methyl-4-thiazolin-2-ylidene)methyl)-4-methylthiazolium iodide
    • Thiazolium, 3-heptyl-2-((3-heptyl-4-methyl-2(3H)-thiazolylidene)methyl)-4-methyl-, iodide
    • Thiazolium, 3-heptyl-2-((3-heptyl-4-methyl-4-thiazolin-2-ylidene)methyl)-4-methyl-, iodide
    • UNII-5X73DDS97A
    • SCHEMBL28327292
    • AS-85843
    • 4,4'-DIMETHYL-3,3'-DIHEPTYL-2,2'-THIAZOLOCYANINE IODIDE
    • (E)-3-Heptyl-2-((3-heptyl-4-methylthiazol-2(3H)-ylidene)methyl)-4-methylthiazol-3-ium iodide
    • 15763-48-1

  • Applications

    Pionin (CAS 15763-48-1) is considered primarily as an intermediate in organic synthesis and may function as a solvent or processing aid in coating, ink, and cleaning formulations; in plastics and polymer processing it may be used as a processing aid, stabilizer, or plasticizer; in cosmetics/personal care or household-product formulations it may be evaluated as a solvent component or formulation additive; and in the coatings and printing applications it can serve as a processing aid or additive to improve processability and film properties.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 120.35
    methanol 48.63
    isopropanol 116.41
    water 0.13
    ethyl acetate 1089.4
    n-propanol 173.3
    acetone 865.54
    n-butanol 220.73
    acetonitrile 184.51
    DMF 1046.58
    toluene 1204.26
    isobutanol 191.62
    1,4-dioxane 1490.11
    methyl acetate 756.7
    THF 2198.49
    2-butanone 1004.34
    n-pentanol 206.73
    sec-butanol 204.74
    n-hexane 73.51
    ethylene glycol 13.74
    NMP 2937.05
    cyclohexane 337.76
    DMSO 530.58
    n-butyl acetate 916.82
    n-octanol 126.12
    chloroform 4392.61
    n-propyl acetate 815.51
    acetic acid 353.7
    dichloromethane 4104.0
    cyclohexanone 2667.54
    propylene glycol 33.56
    isopropyl acetate 851.88
    DMAc 2230.14
    2-ethoxyethanol 342.72
    isopentanol 273.85
    n-heptane 59.0
    ethyl formate 426.98
    1,2-dichloroethane 2492.85
    n-hexanol 203.84
    2-methoxyethanol 347.25
    isobutyl acetate 648.86
    tetrachloromethane 791.73
    n-pentyl acetate 862.22
    transcutol 1469.99
    n-heptanol 150.34
    ethylbenzene 374.36
    MIBK 687.28
    2-propoxyethanol 426.49
    tert-butanol 159.82
    MTBE 545.06
    2-butoxyethanol 402.97
    propionic acid 291.96
    o-xylene 621.06
    formic acid 56.68
    diethyl ether 658.0
    m-xylene 628.64
    p-xylene 586.28
    chlorobenzene 1783.86
    dimethyl carbonate 474.49
    n-octane 24.42
    formamide 106.73
    cyclopentanone 2602.2
    2-pentanone 1035.48
    anisole 744.18
    cyclopentyl methyl ether 1567.86
    gamma-butyrolactone 2343.38
    1-methoxy-2-propanol 342.68
    pyridine 1652.86
    3-pentanone 1113.51
    furfural 1670.12
    n-dodecane 17.68
    diethylene glycol 166.55
    diisopropyl ether 271.15
    tert-amyl alcohol 236.03
    acetylacetone 1464.66
    n-hexadecane 22.78
    acetophenone 939.83
    methyl propionate 937.27
    isopentyl acetate 895.32
    trichloroethylene 4895.66
    n-nonanol 144.55
    cyclohexanol 617.4
    benzyl alcohol 440.85
    2-ethylhexanol 245.17
    isooctanol 167.65
    dipropyl ether 441.33
    1,2-dichlorobenzene 1672.23
    ethyl lactate 280.4
    propylene carbonate 1585.35
    n-methylformamide 272.34
    2-pentanol 207.18
    n-pentane 71.39
    1-propoxy-2-propanol 396.3
    1-methoxy-2-propyl acetate 963.12
    2-(2-methoxypropoxy) propanol 445.9
    mesitylene 362.08
    ε-caprolactone 2232.45
    p-cymene 241.61
    epichlorohydrin 2847.03
    1,1,1-trichloroethane 2804.14
    2-aminoethanol 45.4
    morpholine-4-carbaldehyde 1927.83
    sulfolane 2574.1
    2,2,4-trimethylpentane 66.69
    2-methyltetrahydrofuran 1939.45
    n-hexyl acetate 757.57
    isooctane 31.68
    2-(2-butoxyethoxy)ethanol 523.95
    sec-butyl acetate 664.84
    tert-butyl acetate 875.05
    decalin 127.87
    glycerin 63.44
    diglyme 1314.48
    acrylic acid 232.83
    isopropyl myristate 304.92
    n-butyric acid 669.48
    acetyl acetate 947.89
    di(2-ethylhexyl) phthalate 311.5
    ethyl propionate 673.65
    nitromethane 680.62
    1,2-diethoxyethane 932.74
    benzonitrile 657.55
    trioctyl phosphate 189.59
    1-bromopropane 1259.58
    gamma-valerolactone 3042.05
    n-decanol 103.42
    triethyl phosphate 431.93
    4-methyl-2-pentanol 152.65
    propionitrile 252.24
    vinylene carbonate 1275.88
    1,1,2-trichlorotrifluoroethane 1575.26
    DMS 765.01
    cumene 244.6
    2-octanol 116.2
    2-hexanone 760.09
    octyl acetate 397.75
    limonene 438.02
    1,2-dimethoxyethane 784.98
    ethyl orthosilicate 432.29
    tributyl phosphate 287.2
    diacetone alcohol 574.82
    N,N-dimethylaniline 505.21
    acrylonitrile 279.95
    aniline 885.6
    1,3-propanediol 117.36
    bromobenzene 2282.75
    dibromomethane 2388.93
    1,1,2,2-tetrachloroethane 4128.49
    2-methyl-cyclohexyl acetate 706.78
    tetrabutyl urea 417.55
    diisobutyl methanol 144.81
    2-phenylethanol 409.25
    styrene 563.55
    dioctyl adipate 517.36
    dimethyl sulfate 852.28
    ethyl butyrate 751.67
    methyl lactate 295.99
    butyl lactate 451.57
    diethyl carbonate 506.38
    propanediol butyl ether 244.42
    triethyl orthoformate 630.24
    p-tert-butyltoluene 215.46
    methyl 4-tert-butylbenzoate 670.24
    morpholine 1504.81
    tert-butylamine 122.67
    n-dodecanol 78.04
    dimethoxymethane 778.88
    ethylene carbonate 1198.7
    cyrene 631.51
    2-ethoxyethyl acetate 1196.74
    2-ethylhexyl acetate 889.42
    1,2,4-trichlorobenzene 2115.74
    4-methylpyridine 1911.46
    dibutyl ether 393.96
    2,6-dimethyl-4-heptanol 144.81
    DEF 1532.37
    dimethyl isosorbide 1053.5
    tetrachloroethylene 2512.4
    eugenol 500.8
    triacetin 955.14
    span 80 389.61
    1,4-butanediol 61.48
    1,1-dichloroethane 2137.39
    2-methyl-1-pentanol 271.99
    methyl formate 259.92
    2-methyl-1-butanol 297.22
    n-decane 34.38
    butyronitrile 342.57
    3,7-dimethyl-1-octanol 178.31
    1-chlorooctane 216.41
    1-chlorotetradecane 82.01
    n-nonane 30.07
    undecane 23.19
    tert-butylcyclohexane 78.84
    cyclooctane 93.43
    cyclopentanol 536.89
    tetrahydropyran 1852.53
    tert-amyl methyl ether 593.86
    2,5,8-trioxanonane 800.15
    1-hexene 252.01
    2-isopropoxyethanol 343.93
    2,2,2-trifluoroethanol 241.79
    methyl butyrate 912.38

    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