Iron silicide

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  • Identifiers

    CAS number
    12022-95-6

    Molecular formula
    FeSi

    SMILES
    [Si].[Fe]

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Odor impact est.
    Low

  • Properties

    pKa est.
    -5.97 (strong acid)

    Molecular weight
    83.93 g/mol

    Flash point

    • -63.16 ˚C est.

  • Synonyms

    • IRON MONOSILICIDE
    • A3I5H1663X
    • UNII-A3I5H1663X
    • EINECS 234-670-2
    • RefChem:148801
    • DTXSID40892426
    • 234-670-2
    • 641-090-7
    • 12022-95-6
    • iron silicide
    • Iron silicide (FeSi)
    • iron;silicon
    • SCHEMBL57272
    • Q15628166
    • 12022-95-6

  • Applications

    Iron silicide (CAS 12022-95-6; also known as ferrosilicon) is primarily used in steelmaking and cast iron production as a deoxidizer and alloying addition supplying silicon; it acts as a reducing agent in ferroalloy production and provides a silicon source for ferrosilicon alloys used to adjust silicon content and improve alloy properties; its applications span industrial manufacturing and materials processing, including silicon-containing alloys for electrical steels.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 98.58
    methanol 106.73
    isopropanol 62.21
    water 1.34
    ethyl acetate 57.59
    n-propanol 67.91
    acetone 105.86
    n-butanol 60.66
    acetonitrile 68.86
    DMF 161.49
    toluene 32.55
    isobutanol 45.36
    1,4-dioxane 115.52
    methyl acetate 62.32
    THF 141.31
    2-butanone 73.7
    n-pentanol 45.33
    sec-butanol 53.31
    n-hexane 13.86
    ethylene glycol 40.43
    NMP 145.68
    cyclohexane 16.98
    DMSO 150.22
    n-butyl acetate 55.74
    n-octanol 38.66
    chloroform 90.23
    n-propyl acetate 40.54
    acetic acid 92.6
    dichloromethane 73.29
    cyclohexanone 97.27
    propylene glycol 36.45
    isopropyl acetate 34.54
    DMAc 94.31
    2-ethoxyethanol 58.15
    isopentanol 45.19
    n-heptane 14.88
    ethyl formate 39.29
    1,2-dichloroethane 54.74
    n-hexanol 62.65
    2-methoxyethanol 103.64
    isobutyl acetate 27.22
    tetrachloromethane 24.54
    n-pentyl acetate 36.68
    transcutol 181.98
    n-heptanol 36.68
    ethylbenzene 17.44
    MIBK 39.34
    2-propoxyethanol 85.16
    tert-butanol 64.96
    MTBE 52.43
    2-butoxyethanol 55.46
    propionic acid 67.18
    o-xylene 23.19
    formic acid 35.58
    diethyl ether 67.05
    m-xylene 23.74
    p-xylene 22.58
    chlorobenzene 41.52
    dimethyl carbonate 30.8
    n-octane 6.6
    formamide 46.32
    cyclopentanone 129.27
    2-pentanone 66.61
    anisole 40.98
    cyclopentyl methyl ether 71.13
    gamma-butyrolactone 121.66
    1-methoxy-2-propanol 78.49
    pyridine 76.52
    3-pentanone 48.46
    furfural 101.47
    n-dodecane 6.08
    diethylene glycol 77.28
    diisopropyl ether 23.88
    tert-amyl alcohol 53.94
    acetylacetone 66.1
    n-hexadecane 6.62
    acetophenone 38.72
    methyl propionate 50.54
    isopentyl acetate 44.65
    trichloroethylene 92.33
    n-nonanol 32.36
    cyclohexanol 53.17
    benzyl alcohol 33.32
    2-ethylhexanol 38.19
    isooctanol 27.85
    dipropyl ether 41.63
    1,2-dichlorobenzene 38.13
    ethyl lactate 23.78
    propylene carbonate 66.09
    n-methylformamide 70.92
    2-pentanol 43.75
    n-pentane 15.78
    1-propoxy-2-propanol 63.22
    1-methoxy-2-propyl acetate 50.04
    2-(2-methoxypropoxy) propanol 50.34
    mesitylene 17.18
    ε-caprolactone 76.69
    p-cymene 17.25
    epichlorohydrin 90.39
    1,1,1-trichloroethane 56.71
    2-aminoethanol 53.65
    morpholine-4-carbaldehyde 124.28
    sulfolane 133.28
    2,2,4-trimethylpentane 7.93
    2-methyltetrahydrofuran 99.12
    n-hexyl acetate 50.52
    isooctane 6.76
    2-(2-butoxyethoxy)ethanol 71.78
    sec-butyl acetate 26.62
    tert-butyl acetate 41.34
    decalin 9.13
    glycerin 51.96
    diglyme 110.48
    acrylic acid 65.85
    isopropyl myristate 23.52
    n-butyric acid 65.87
    acetyl acetate 40.19
    di(2-ethylhexyl) phthalate 22.11
    ethyl propionate 33.68
    nitromethane 114.17
    1,2-diethoxyethane 63.13
    benzonitrile 45.16
    trioctyl phosphate 18.83
    1-bromopropane 41.17
    gamma-valerolactone 122.99
    n-decanol 25.32
    triethyl phosphate 20.26
    4-methyl-2-pentanol 26.59
    propionitrile 50.67
    vinylene carbonate 59.06
    1,1,2-trichlorotrifluoroethane 69.31
    DMS 38.67
    cumene 14.04
    2-octanol 27.25
    2-hexanone 48.39
    octyl acetate 29.45
    limonene 28.1
    1,2-dimethoxyethane 81.01
    ethyl orthosilicate 20.21
    tributyl phosphate 21.51
    diacetone alcohol 54.39
    N,N-dimethylaniline 29.99
    acrylonitrile 61.35
    aniline 39.8
    1,3-propanediol 65.47
    bromobenzene 40.58
    dibromomethane 56.91
    1,1,2,2-tetrachloroethane 72.32
    2-methyl-cyclohexyl acetate 29.98
    tetrabutyl urea 30.19
    diisobutyl methanol 24.21
    2-phenylethanol 40.89
    styrene 22.98
    dioctyl adipate 29.15
    dimethyl sulfate 47.29
    ethyl butyrate 35.19
    methyl lactate 35.36
    butyl lactate 31.68
    diethyl carbonate 24.26
    propanediol butyl ether 55.25
    triethyl orthoformate 26.37
    p-tert-butyltoluene 17.96
    methyl 4-tert-butylbenzoate 39.5
    morpholine 114.42
    tert-butylamine 45.89
    n-dodecanol 20.82
    dimethoxymethane 77.95
    ethylene carbonate 46.78
    cyrene 45.1
    2-ethoxyethyl acetate 49.0
    2-ethylhexyl acetate 38.25
    1,2,4-trichlorobenzene 44.95
    4-methylpyridine 67.05
    dibutyl ether 37.94
    2,6-dimethyl-4-heptanol 24.21
    DEF 71.28
    dimethyl isosorbide 72.6
    tetrachloroethylene 54.28
    eugenol 43.04
    triacetin 46.16
    span 80 48.39
    1,4-butanediol 30.51
    1,1-dichloroethane 55.94
    2-methyl-1-pentanol 38.73
    methyl formate 52.72
    2-methyl-1-butanol 44.49
    n-decane 8.82
    butyronitrile 48.78
    3,7-dimethyl-1-octanol 33.2
    1-chlorooctane 25.58
    1-chlorotetradecane 12.42
    n-nonane 9.11
    undecane 7.1
    tert-butylcyclohexane 9.59
    cyclooctane 7.32
    cyclopentanol 64.62
    tetrahydropyran 95.96
    tert-amyl methyl ether 42.72
    2,5,8-trioxanonane 83.56
    1-hexene 32.82
    2-isopropoxyethanol 43.58
    2,2,2-trifluoroethanol 33.96
    methyl butyrate 44.06

    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