Silicon tetrafluoride

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  • Identifiers

    CAS number
    7783-61-1

    Molecular formula
    F4Si

    SMILES
    F[Si](F)(F)F

    Safety labels

    Compressed Gas
    Compressed Gas

    Corrosive
    Corrosive

    Acute Toxic
    Acute Toxic

  • Odor profile

    Fragrance
    Odorless 63.04%
    Fishy 26.21%
    Sweet 24.22%
    Savory 16.76%
    Cooling 15.05%
    Ripe 14.96%
    Meaty 14.6%
    Animal 13.73%
    Clean 13.44%
    Balsamic 13.29%

     

    Flavor
    Odorless 39.3%
    Sulfurous 22.19%
    Sulfury 21.49%
    Meaty 19.57%
    Mild 18.76%
    Fishy 18.64%
    Bloody 18.1%
    Glue 18.09%
    Rotten 18.07%
    Bouillon 17.84%

     

    Odor impact est.
    High

  • Properties

    pKa est.
    -2.71 (strong acid)

    Molecular weight
    104.079 g/mol

    Melting point expt.

    • -90.2 °C (UNDER PRESSURE)

    Boiling point

    • -86 °C

    Flash point

    • -37.65 ˚C est.

    Solubility expt.

    • SOL IN ABSOLUTE ALCOHOL; SOL IN HYDROGEN FLUORIDE; INSOL IN ETHER
    • Solubility in water: reaction

  • Synonyms

    • Tetrafluorosilane
    • SILICON TETRAFLUORIDE
    • Silane, tetrafluoro-
    • 7783-61-1
    • Perfluorosilane
    • Silicon fluoride
    • Silicon fluoride (SiF4)
    • SiF4
    • UN1859
    • HSDB 684
    • UNII-K60VCI56YO
    • EINECS 232-015-5
    • K60VCI56YO
    • Silicon tetrafluoride, compressed
    • UN-1859
    • DTXSID0064830
    • ABTOQLMXBSRXSM-UHFFFAOYSA-
    • SILICON TETRAFLUORIDE [MI]
    • MFCD00040533
    • InChI=1/F4Si/c1-5(2,3)4
    • UN 1859
    • DB-256073
    • Q413140
    • Silicon tetrafluoride, electronic grade, >=99.99%
    • Silicon tetrafluoride, compressed [UN1859] [Poison gas]
    • 232-015-5

  • Applications

    Silicon tetrafluoride is a volatile fluorinating agent and chemical intermediate used primarily to prepare silicon‑ and fluorine‑containing species. It serves as a precursor for silicon fluoride compounds and fluorinated silicon materials employed in specialty inorganic synthesis. In electronics and semiconductor manufacturing, it is used for gas‑phase fluorination and surface modification of silicon‑containing materials, including etching and plasma‑assisted surface treatments in niche fabrication processes. It also finds utility in metallurgy and glass/ceramics processing as a fluorination source to treat silica substrates or to generate fluorinated surface coatings with improved chemical resistance. In polymers and coatings, it may be used to introduce fluorine functionality or to generate fluorinated siloxane intermediates, contributing to enhanced thermal stability and chemical resistance. Applications are subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 654.89
    methanol 927.38
    isopropanol 604.91
    water 212.6
    ethyl acetate 144.5
    n-propanol 442.23
    acetone 431.58
    n-butanol 367.12
    acetonitrile 276.06
    DMF 1014.63
    toluene 71.01
    isobutanol 281.05
    1,4-dioxane 278.96
    methyl acetate 156.98
    THF 554.07
    2-butanone 217.98
    n-pentanol 232.75
    sec-butanol 390.92
    n-hexane 74.78
    ethylene glycol 408.09
    NMP 384.85
    cyclohexane 67.85
    DMSO 1253.53
    n-butyl acetate 85.12
    n-octanol 147.81
    chloroform 218.44
    n-propyl acetate 93.87
    acetic acid 256.38
    dichloromethane 258.6
    cyclohexanone 150.9
    propylene glycol 314.54
    isopropyl acetate 111.58
    DMAc 502.8
    2-ethoxyethanol 380.29
    isopentanol 248.98
    n-heptane 71.83
    ethyl formate 159.62
    1,2-dichloroethane 206.52
    n-hexanol 194.46
    2-methoxyethanol 759.12
    isobutyl acetate 46.71
    tetrachloromethane 79.04
    n-pentyl acetate 94.33
    transcutol 294.5
    n-heptanol 155.47
    ethylbenzene 47.85
    MIBK 139.13
    2-propoxyethanol 334.69
    tert-butanol 581.72
    MTBE 271.02
    2-butoxyethanol 224.74
    propionic acid 187.43
    o-xylene 71.7
    formic acid 343.42
    diethyl ether 362.58
    m-xylene 71.1
    p-xylene 51.12
    chlorobenzene 54.15
    dimethyl carbonate 128.58
    n-octane 36.02
    formamide 531.06
    cyclopentanone 235.71
    2-pentanone 219.6
    anisole 101.25
    cyclopentyl methyl ether 226.2
    gamma-butyrolactone 234.47
    1-methoxy-2-propanol 579.63
    pyridine 156.37
    3-pentanone 160.14
    furfural 204.0
    n-dodecane 25.54
    diethylene glycol 352.49
    diisopropyl ether 123.09
    tert-amyl alcohol 353.9
    acetylacetone 173.02
    n-hexadecane 26.42
    acetophenone 84.28
    methyl propionate 171.66
    isopentyl acetate 66.57
    trichloroethylene 171.48
    n-nonanol 127.77
    cyclohexanol 195.25
    benzyl alcohol 109.08
    2-ethylhexanol 96.08
    isooctanol 110.47
    dipropyl ether 168.93
    1,2-dichlorobenzene 54.73
    ethyl lactate 97.79
    propylene carbonate 108.78
    n-methylformamide 492.88
    2-pentanol 301.32
    n-pentane 135.19
    1-propoxy-2-propanol 234.76
    1-methoxy-2-propyl acetate 106.31
    2-(2-methoxypropoxy) propanol 131.96
    mesitylene 61.42
    ε-caprolactone 123.0
    p-cymene 47.99
    epichlorohydrin 248.38
    1,1,1-trichloroethane 118.28
    2-aminoethanol 478.21
    morpholine-4-carbaldehyde 329.02
    sulfolane 330.05
    2,2,4-trimethylpentane 38.84
    2-methyltetrahydrofuran 271.06
    n-hexyl acetate 104.2
    isooctane 36.39
    2-(2-butoxyethoxy)ethanol 190.4
    sec-butyl acetate 59.25
    tert-butyl acetate 127.93
    decalin 24.3
    glycerin 392.2
    diglyme 295.75
    acrylic acid 174.02
    isopropyl myristate 59.5
    n-butyric acid 186.93
    acetyl acetate 71.76
    di(2-ethylhexyl) phthalate 49.94
    ethyl propionate 98.59
    nitromethane 351.0
    1,2-diethoxyethane 141.14
    benzonitrile 76.15
    trioctyl phosphate 52.46
    1-bromopropane 173.89
    gamma-valerolactone 257.32
    n-decanol 100.99
    triethyl phosphate 50.06
    4-methyl-2-pentanol 157.43
    propionitrile 192.88
    vinylene carbonate 94.37
    1,1,2-trichlorotrifluoroethane 212.0
    DMS 70.75
    cumene 42.78
    2-octanol 126.5
    2-hexanone 115.24
    octyl acetate 74.66
    limonene 64.09
    1,2-dimethoxyethane 464.33
    ethyl orthosilicate 53.83
    tributyl phosphate 48.78
    diacetone alcohol 209.42
    N,N-dimethylaniline 112.88
    acrylonitrile 215.79
    aniline 124.58
    1,3-propanediol 421.69
    bromobenzene 46.99
    dibromomethane 214.84
    1,1,2,2-tetrachloroethane 192.04
    2-methyl-cyclohexyl acetate 60.5
    tetrabutyl urea 80.55
    diisobutyl methanol 84.26
    2-phenylethanol 101.38
    styrene 51.01
    dioctyl adipate 63.78
    dimethyl sulfate 194.38
    ethyl butyrate 79.54
    methyl lactate 173.79
    butyl lactate 96.13
    diethyl carbonate 52.51
    propanediol butyl ether 196.42
    triethyl orthoformate 65.49
    p-tert-butyltoluene 53.5
    methyl 4-tert-butylbenzoate 118.34
    morpholine 355.34
    tert-butylamine 423.62
    n-dodecanol 81.78
    dimethoxymethane 630.63
    ethylene carbonate 86.51
    cyrene 116.23
    2-ethoxyethyl acetate 95.82
    2-ethylhexyl acetate 52.83
    1,2,4-trichlorobenzene 58.35
    4-methylpyridine 141.67
    dibutyl ether 99.34
    2,6-dimethyl-4-heptanol 84.26
    DEF 257.47
    dimethyl isosorbide 171.36
    tetrachloroethylene 157.52
    eugenol 138.25
    triacetin 81.46
    span 80 130.86
    1,4-butanediol 205.82
    1,1-dichloroethane 169.97
    2-methyl-1-pentanol 144.06
    methyl formate 315.32
    2-methyl-1-butanol 227.22
    n-decane 39.31
    butyronitrile 183.65
    3,7-dimethyl-1-octanol 97.23
    1-chlorooctane 75.22
    1-chlorotetradecane 38.14
    n-nonane 40.89
    undecane 30.81
    tert-butylcyclohexane 25.74
    cyclooctane 35.91
    cyclopentanol 269.15
    tetrahydropyran 231.77
    tert-amyl methyl ether 219.7
    2,5,8-trioxanonane 216.72
    1-hexene 120.8
    2-isopropoxyethanol 229.6
    2,2,2-trifluoroethanol 144.82
    methyl butyrate 115.66

    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