Pyrophyllite (AlH(SiO3)2)

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  • Identifiers

    CAS number
    68136-61-8

    Molecular formula
    AlH6O9Si3+3

    SMILES
    O[Si](=O)O.O[Si](=O)O.O[Si](=O)O.[Al+3]

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Odorless 80.29%
    Sour 41.1%
    Sharp 26.4%
    Cheesy 20.55%
    Pungent 19.26%
    Clean 16.87%
    Sulfurous 16.68%
    Sweaty 16.45%
    Burnt 15.79%
    Milky 12.95%

     

    Flavor
    Odorless 71.13%
    Sour 51.96%
    Vinegar 43.28%
    Pungent 37.96%
    Acidic 30.58%
    Sharp 29.7%
    Rancid 28.72%
    Formyl 23.02%
    Soy 22.24%
    Mousy 20.73%

     

    Odor impact est.
    High

  • Properties

    pKa est.
    5.79 (weak acid)

    Molecular weight
    261.28 g/mol

    Flash point

    • 138.16 ˚C est.

  • Synonyms

    • DTXSID50218315
    • 68136-61-8
    • RefChem:202797
    • DTXCID70140806
    • 602-803-7
    • 12269-78-2
    • Pyrophyllite (AlH(SiO3)2)
    • COMOYPSTCCFOIE-UHFFFAOYSA-N
    • NS00128391
    • 12269-78-2

  • Applications

    Pyrophyllite (AlH(SiO3)2), CAS 68136-61-8, is a soft aluminosilicate mineral widely used as a filler and extender in paints, coatings, plastics, adhesives, and rubber formulations, helping improve processability, brightness, and cost efficiency. It also serves as a polishing abrasive and carrier in metal, stone, and glass finishing applications, and as a functional filler in ceramics and refractory composites to enhance whiteness and thermal stability. In cosmetics and personal care, it can act as an absorbent and bulking agent in loose powders and skincare formulations. In cleaning and household products, pyrophyllite provides gentle abrasion and texture enhancement, contributing to product feel and polishing performance.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 318.5
    methanol 579.99
    isopropanol 209.21
    water 967.13
    ethyl acetate 23.05
    n-propanol 167.71
    acetone 178.07
    n-butanol 102.13
    acetonitrile 75.96
    DMF 614.66
    toluene 7.03
    isobutanol 90.26
    1,4-dioxane 107.94
    methyl acetate 45.81
    THF 217.27
    2-butanone 53.61
    n-pentanol 71.95
    sec-butanol 88.34
    n-hexane 6.28
    ethylene glycol 427.24
    NMP 203.63
    cyclohexane 6.39
    DMSO 497.02
    n-butyl acetate 21.26
    n-octanol 26.94
    chloroform 9.72
    n-propyl acetate 27.28
    acetic acid 166.31
    dichloromethane 15.22
    cyclohexanone 41.43
    propylene glycol 277.48
    isopropyl acetate 18.92
    DMAc 270.92
    2-ethoxyethanol 216.18
    isopentanol 60.32
    n-heptane 6.9
    ethyl formate 51.68
    1,2-dichloroethane 17.87
    n-hexanol 50.7
    2-methoxyethanol 390.22
    isobutyl acetate 16.06
    tetrachloromethane 4.92
    n-pentyl acetate 20.68
    transcutol 141.03
    n-heptanol 37.51
    ethylbenzene 4.64
    MIBK 25.77
    2-propoxyethanol 160.33
    tert-butanol 143.66
    MTBE 32.51
    2-butoxyethanol 104.4
    propionic acid 89.9
    o-xylene 7.39
    formic acid 319.35
    diethyl ether 44.13
    m-xylene 7.35
    p-xylene 5.68
    chlorobenzene 4.66
    dimethyl carbonate 55.79
    n-octane 2.73
    formamide 398.2
    cyclopentanone 88.66
    2-pentanone 40.82
    anisole 19.7
    cyclopentyl methyl ether 50.29
    gamma-butyrolactone 92.01
    1-methoxy-2-propanol 245.75
    pyridine 38.16
    3-pentanone 26.4
    furfural 88.24
    n-dodecane 2.06
    diethylene glycol 233.85
    diisopropyl ether 12.49
    tert-amyl alcohol 67.5
    acetylacetone 44.09
    n-hexadecane 2.12
    acetophenone 21.54
    methyl propionate 39.31
    isopentyl acetate 14.93
    trichloroethylene 14.33
    n-nonanol 23.24
    cyclohexanol 43.89
    benzyl alcohol 31.5
    2-ethylhexanol 17.86
    isooctanol 23.59
    dipropyl ether 30.91
    1,2-dichlorobenzene 4.7
    ethyl lactate 45.46
    propylene carbonate 37.49
    n-methylformamide 311.45
    2-pentanol 56.07
    n-pentane 9.65
    1-propoxy-2-propanol 95.6
    1-methoxy-2-propyl acetate 33.38
    2-(2-methoxypropoxy) propanol 58.44
    mesitylene 6.38
    ε-caprolactone 38.38
    p-cymene 5.32
    epichlorohydrin 72.84
    1,1,1-trichloroethane 7.93
    2-aminoethanol 394.77
    morpholine-4-carbaldehyde 208.26
    sulfolane 119.47
    2,2,4-trimethylpentane 2.53
    2-methyltetrahydrofuran 66.73
    n-hexyl acetate 21.2
    isooctane 2.57
    2-(2-butoxyethoxy)ethanol 86.29
    sec-butyl acetate 14.23
    tert-butyl acetate 21.02
    decalin 2.17
    glycerin 387.68
    diglyme 156.52
    acrylic acid 102.35
    isopropyl myristate 10.53
    n-butyric acid 56.33
    acetyl acetate 16.66
    di(2-ethylhexyl) phthalate 15.42
    ethyl propionate 23.47
    nitromethane 187.81
    1,2-diethoxyethane 34.67
    benzonitrile 16.32
    trioctyl phosphate 15.31
    1-bromopropane 10.05
    gamma-valerolactone 118.89
    n-decanol 18.2
    triethyl phosphate 14.89
    4-methyl-2-pentanol 27.42
    propionitrile 39.58
    vinylene carbonate 32.41
    1,1,2-trichlorotrifluoroethane 83.56
    DMS 20.77
    cumene 4.87
    2-octanol 21.68
    2-hexanone 30.31
    octyl acetate 16.1
    limonene 7.13
    1,2-dimethoxyethane 204.3
    ethyl orthosilicate 14.38
    tributyl phosphate 14.29
    diacetone alcohol 56.7
    N,N-dimethylaniline 23.93
    acrylonitrile 56.91
    aniline 24.16
    1,3-propanediol 260.06
    bromobenzene 2.78
    dibromomethane 9.45
    1,1,2,2-tetrachloroethane 15.75
    2-methyl-cyclohexyl acetate 14.69
    tetrabutyl urea 25.71
    diisobutyl methanol 12.55
    2-phenylethanol 25.49
    styrene 5.37
    dioctyl adipate 18.28
    dimethyl sulfate 79.56
    ethyl butyrate 19.16
    methyl lactate 84.87
    butyl lactate 34.24
    diethyl carbonate 15.09
    propanediol butyl ether 93.74
    triethyl orthoformate 19.58
    p-tert-butyltoluene 6.05
    methyl 4-tert-butylbenzoate 32.49
    morpholine 155.96
    tert-butylamine 72.48
    n-dodecanol 14.48
    dimethoxymethane 240.98
    ethylene carbonate 30.7
    cyrene 65.53
    2-ethoxyethyl acetate 26.47
    2-ethylhexyl acetate 11.33
    1,2,4-trichlorobenzene 6.32
    4-methylpyridine 28.71
    dibutyl ether 13.85
    2,6-dimethyl-4-heptanol 12.55
    DEF 67.87
    dimethyl isosorbide 70.66
    tetrachloroethylene 13.23
    eugenol 49.57
    triacetin 28.14
    span 80 50.4
    1,4-butanediol 156.54
    1,1-dichloroethane 11.48
    2-methyl-1-pentanol 34.69
    methyl formate 197.12
    2-methyl-1-butanol 53.77
    n-decane 2.86
    butyronitrile 34.64
    3,7-dimethyl-1-octanol 15.97
    1-chlorooctane 6.22
    1-chlorotetradecane 3.55
    n-nonane 2.91
    undecane 2.34
    tert-butylcyclohexane 2.26
    cyclooctane 3.13
    cyclopentanol 94.42
    tetrahydropyran 53.03
    tert-amyl methyl ether 24.68
    2,5,8-trioxanonane 114.11
    1-hexene 11.69
    2-isopropoxyethanol 110.27
    2,2,2-trifluoroethanol 109.52
    methyl butyrate 32.17

    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