Diethyldichlorosilane

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  • Identifiers

    CAS number
    1719-53-5

    Molecular formula
    C4H10Cl2Si

    SMILES
    CC[Si](CC)(Cl)Cl

    Safety labels

    Flammable
    Flammable

    Corrosive
    Corrosive

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Fishy 35.73%
    Odorless 31.1%
    Sweet 28.65%
    Fresh 24.33%
    Cheesy 24.3%
    Woody 23.96%
    Floral 23.91%
    Ripe 22.77%
    Citrus 20.8%
    Mint 20.2%

     

    Flavor
    Sulfurous 33.2%
    Meaty 26.0%
    Sulfury 21.86%
    Fishy 21.63%
    Bloody 20.91%
    Onion 20.64%
    Glue 20.38%
    Skunky 19.91%
    Ammoniacal 19.51%
    Mild 19.46%

     

    Odor impact est.
    Medium

  • Properties

    pKa est.
    10.47 (weak base)

    Molecular weight
    157.11 g/mol

    Melting point expt.

    • -141.7 °F (NTP, 1992)
    • -96.5 °C

    Boiling point

    • 262 to 266 °F at 760 mmHg (decomposes) (NTP, 1992)
    • 129 °C (decomposes)

    Flash point

    • 19.53 ˚C est.
    • 75.2 °F (NTP, 1992)
    • 77 °F (25 °C) (open cup)

    Solubility expt.

    • Decomposes (NTP, 1992)
    • 1 G SOL IN 100 ML ETHER

  • Synonyms

    • Dichlorodiethylsilane
    • 1719-53-5
    • DIETHYLDICHLOROSILANE
    • Dichloro(diethyl)silane
    • Silane, dichlorodiethyl-
    • Diethyldichlorosilicon
    • Diethyl dichlorosilane
    • HSDB 4276
    • EINECS 217-005-0
    • UN1767
    • BRN 0605313
    • UNII-Z1272A2B31
    • DTXSID3025043
    • 4-04-00-04158 (Beilstein Handbook Reference)
    • DIETHYLDICHLOROSILANE [HSDB]
    • Z1272A2B31
    • UN 1767
    • diethyidichlorosilane
    • MFCD00000493
    • diethyl-dichloro-silane
    • Silane, dichlorodiethyl
    • diethyldichlorosilane(dichlorodiethylsilane)
    • Dichlorodiethylsilane, 97%
    • SCHEMBL118715
    • DTXCID905043
    • AKOS008901380
    • FD62723
    • FS-5033
    • D1976
    • NS00047674
    • Diethyldichlorosilane [UN1767] [Corrosive]
    • D89967
    • EN300-332602
    • Q20180548

  • Applications

    Diethyldichlorosilane (CAS 1719-53-5) is a reactive chlorosilane primarily used as a precursor in the manufacture of silicone polymers and siloxane resins via hydrolysis and condensation of Si–Cl bonds to form siloxane networks. It also serves as a building block for silicone coatings, sealants, and elastomers, introducing diethylsilyl linkages into polymer frameworks. In coatings, inks, and adhesives, it acts as a silane coupling agent and surface modifier to improve adhesion to polymer and inorganic substrates. Additionally, it is used as an intermediate to prepare diethylsilane-containing organosilicon compounds for specialty materials in electronics, optics, and high-performance polymer formulations.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 136.22
    methanol 139.5
    isopropanol 112.06
    water 2.22
    ethyl acetate 155.36
    n-propanol 123.51
    acetone 192.88
    n-butanol 141.2
    acetonitrile 80.46
    DMF 252.02
    toluene 86.87
    isobutanol 86.21
    1,4-dioxane 276.51
    methyl acetate 138.45
    THF 550.66
    2-butanone 189.67
    n-pentanol 109.96
    sec-butanol 116.35
    n-hexane 18.69
    ethylene glycol 27.36
    NMP 324.82
    cyclohexane 35.51
    DMSO 201.41
    n-butyl acetate 199.89
    n-octanol 102.8
    chloroform 319.26
    n-propyl acetate 135.94
    acetic acid 128.91
    dichloromethane 203.31
    cyclohexanone 308.53
    propylene glycol 50.35
    isopropyl acetate 128.81
    DMAc 236.63
    2-ethoxyethanol 182.2
    isopentanol 113.83
    n-heptane 45.87
    ethyl formate 124.1
    1,2-dichloroethane 127.74
    n-hexanol 153.07
    2-methoxyethanol 219.89
    isobutyl acetate 102.61
    tetrachloromethane 89.41
    n-pentyl acetate 183.41
    transcutol 411.23
    n-heptanol 126.82
    ethylbenzene 52.44
    MIBK 131.03
    2-propoxyethanol 237.24
    tert-butanol 134.96
    MTBE 150.46
    2-butoxyethanol 198.86
    propionic acid 98.97
    o-xylene 72.9
    formic acid 61.05
    diethyl ether 153.03
    m-xylene 74.88
    p-xylene 68.87
    chlorobenzene 126.0
    dimethyl carbonate 60.86
    n-octane 22.72
    formamide 97.84
    cyclopentanone 386.11
    2-pentanone 186.32
    anisole 143.43
    cyclopentyl methyl ether 216.54
    gamma-butyrolactone 346.14
    1-methoxy-2-propanol 193.64
    pyridine 183.31
    3-pentanone 131.68
    furfural 335.94
    n-dodecane 13.47
    diethylene glycol 144.36
    diisopropyl ether 72.66
    tert-amyl alcohol 137.19
    acetylacetone 202.8
    n-hexadecane 15.27
    acetophenone 145.26
    methyl propionate 117.32
    isopentyl acetate 171.68
    trichloroethylene 270.36
    n-nonanol 94.08
    cyclohexanol 132.38
    benzyl alcohol 106.38
    2-ethylhexanol 113.42
    isooctanol 102.3
    dipropyl ether 167.31
    1,2-dichlorobenzene 130.57
    ethyl lactate 74.45
    propylene carbonate 213.93
    n-methylformamide 127.75
    2-pentanol 114.01
    n-pentane 26.81
    1-propoxy-2-propanol 227.24
    1-methoxy-2-propyl acetate 206.4
    2-(2-methoxypropoxy) propanol 160.8
    mesitylene 60.35
    ε-caprolactone 263.04
    p-cymene 77.59
    epichlorohydrin 300.53
    1,1,1-trichloroethane 181.78
    2-aminoethanol 62.74
    morpholine-4-carbaldehyde 302.2
    sulfolane 361.03
    2,2,4-trimethylpentane 21.67
    2-methyltetrahydrofuran 314.29
    n-hexyl acetate 177.87
    isooctane 19.95
    2-(2-butoxyethoxy)ethanol 222.47
    sec-butyl acetate 105.73
    tert-butyl acetate 173.81
    decalin 22.59
    glycerin 75.36
    diglyme 385.45
    acrylic acid 83.92
    isopropyl myristate 87.17
    n-butyric acid 171.66
    acetyl acetate 113.42
    di(2-ethylhexyl) phthalate 78.0
    ethyl propionate 98.61
    nitromethane 198.33
    1,2-diethoxyethane 226.06
    benzonitrile 130.64
    trioctyl phosphate 64.68
    1-bromopropane 97.62
    gamma-valerolactone 461.11
    n-decanol 69.31
    triethyl phosphate 90.31
    4-methyl-2-pentanol 80.27
    propionitrile 85.5
    vinylene carbonate 175.52
    1,1,2-trichlorotrifluoroethane 216.2
    DMS 97.02
    cumene 46.67
    2-octanol 100.2
    2-hexanone 158.46
    octyl acetate 106.58
    limonene 113.83
    1,2-dimethoxyethane 289.72
    ethyl orthosilicate 100.66
    tributyl phosphate 78.09
    diacetone alcohol 177.58
    N,N-dimethylaniline 108.39
    acrylonitrile 89.21
    aniline 112.81
    1,3-propanediol 107.41
    bromobenzene 124.29
    dibromomethane 147.46
    1,1,2,2-tetrachloroethane 241.84
    2-methyl-cyclohexyl acetate 156.76
    tetrabutyl urea 99.24
    diisobutyl methanol 93.14
    2-phenylethanol 142.32
    styrene 63.21
    dioctyl adipate 114.55
    dimethyl sulfate 96.63
    ethyl butyrate 162.19
    methyl lactate 81.03
    butyl lactate 148.81
    diethyl carbonate 101.17
    propanediol butyl ether 175.32
    triethyl orthoformate 153.69
    p-tert-butyltoluene 86.86
    methyl 4-tert-butylbenzoate 162.01
    morpholine 285.89
    tert-butylamine 93.81
    n-dodecanol 53.51
    dimethoxymethane 183.16
    ethylene carbonate 147.69
    cyrene 178.85
    2-ethoxyethyl acetate 210.29
    2-ethylhexyl acetate 156.48
    1,2,4-trichlorobenzene 154.89
    4-methylpyridine 194.79
    dibutyl ether 125.47
    2,6-dimethyl-4-heptanol 93.14
    DEF 169.45
    dimethyl isosorbide 306.52
    tetrachloroethylene 166.43
    eugenol 154.68
    triacetin 171.79
    span 80 169.9
    1,4-butanediol 56.39
    1,1-dichloroethane 146.98
    2-methyl-1-pentanol 95.63
    methyl formate 100.81
    2-methyl-1-butanol 105.06
    n-decane 23.91
    butyronitrile 118.52
    3,7-dimethyl-1-octanol 96.66
    1-chlorooctane 70.33
    1-chlorotetradecane 31.4
    n-nonane 24.0
    undecane 17.0
    tert-butylcyclohexane 24.83
    cyclooctane 20.91
    cyclopentanol 152.27
    tetrahydropyran 254.24
    tert-amyl methyl ether 140.47
    2,5,8-trioxanonane 272.94
    1-hexene 50.09
    2-isopropoxyethanol 142.54
    2,2,2-trifluoroethanol 73.07
    methyl butyrate 139.47

    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