Poly(oxy(methylsilylene))

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  • Identifiers

    CAS number
    9004-73-3

    Molecular formula
    C3H10OSi

    SMILES
    CO[SiH](C)C

    Safety labels

  • Odor profile

    Fragrance
    Ethereal 80.76%
    Alcoholic 62.8%
    Solvent 55.29%
    Fermented 54.77%
    Fruity 40.87%
    Sweet 40.4%
    Pungent 37.21%
    Musty 36.95%
    Winey 35.21%
    Fresh 32.38%

     

    Flavor
    Ether 45.26%
    Ethereal 40.51%
    Fruity 37.9%
    Green 37.04%
    Alcoholic 32.32%
    Sweet 32.07%
    Alcohol 31.54%
    Solvent 28.79%
    Earthy 27.24%
    Fusel 27.23%

     

    Odor impact est.
    High

  • Properties

    pKa est.
    9.32 (weak base)

    Molecular weight
    90.2 g/mol

    Flash point

    • -42.41 ˚C est.

  • Synonyms

    • Polyoxy(methylsilylene)
    • RefChem:1096493
    • DTXSID8047501
    • DTXCID601777975
    • 618-393-8
    • 9004-73-3
    • methoxy(dimethyl)silane
    • SCHEMBL109022
    • SCHEMBL6432797
    • 9004-73-3

  • Applications

    Poly(oxy(methylsilylene)) (CAS 9004-73-3) is a silicon-oxygen polymer used primarily as an intermediate or building block in silicone-based chemistries. In industry, it is commonly evaluated for use in the synthesis of silicone resins and elastomers, where it can act as a crosslinking agent or chain-terminating unit to tailor thermal and mechanical properties. It may be incorporated into coatings and inks to modify surface energy and durability, and into adhesives and sealants to improve compatibility with siloxane systems. It is also used in electronics-related applications as a dielectric or encapsulation material and can function as a processing aid or modifier in polymer manufacturing.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1994.64
    methanol 2050.7
    isopropanol 1365.06
    water 51.25
    ethyl acetate 536.08
    n-propanol 1596.23
    acetone 691.68
    n-butanol 1426.83
    acetonitrile 701.03
    DMF 542.15
    toluene 228.16
    isobutanol 809.37
    1,4-dioxane 1031.41
    methyl acetate 525.38
    THF 1490.39
    2-butanone 626.83
    n-pentanol 745.85
    sec-butanol 1195.26
    n-hexane 289.58
    ethylene glycol 611.21
    NMP 555.07
    cyclohexane 474.22
    DMSO 579.04
    n-butyl acetate 441.65
    n-octanol 411.61
    chloroform 1619.31
    n-propyl acetate 295.44
    acetic acid 1185.84
    dichloromethane 1027.49
    cyclohexanone 705.28
    propylene glycol 804.21
    isopropyl acetate 255.69
    DMAc 462.19
    2-ethoxyethanol 782.03
    isopentanol 666.45
    n-heptane 421.27
    ethyl formate 413.41
    1,2-dichloroethane 509.56
    n-hexanol 990.99
    2-methoxyethanol 1449.96
    isobutyl acetate 146.18
    tetrachloromethane 504.84
    n-pentyl acetate 274.68
    transcutol 1137.73
    n-heptanol 503.4
    ethylbenzene 97.66
    MIBK 189.82
    2-propoxyethanol 1049.45
    tert-butanol 965.51
    MTBE 495.78
    2-butoxyethanol 643.1
    propionic acid 997.96
    o-xylene 147.0
    formic acid 602.85
    diethyl ether 933.4
    m-xylene 124.11
    p-xylene 117.02
    chlorobenzene 265.35
    dimethyl carbonate 103.33
    n-octane 117.68
    formamide 604.9
    cyclopentanone 794.79
    2-pentanone 494.2
    anisole 200.19
    cyclopentyl methyl ether 612.5
    gamma-butyrolactone 751.34
    1-methoxy-2-propanol 973.02
    pyridine 668.66
    3-pentanone 396.08
    furfural 565.83
    n-dodecane 59.05
    diethylene glycol 767.59
    diisopropyl ether 187.15
    tert-amyl alcohol 837.93
    acetylacetone 261.63
    n-hexadecane 61.03
    acetophenone 152.28
    methyl propionate 402.31
    isopentyl acetate 256.51
    trichloroethylene 728.45
    n-nonanol 347.11
    cyclohexanol 869.64
    benzyl alcohol 237.5
    2-ethylhexanol 482.58
    isooctanol 298.67
    dipropyl ether 589.51
    1,2-dichlorobenzene 193.6
    ethyl lactate 180.78
    propylene carbonate 324.09
    n-methylformamide 548.74
    2-pentanol 823.57
    n-pentane 440.8
    1-propoxy-2-propanol 811.98
    1-methoxy-2-propyl acetate 264.85
    2-(2-methoxypropoxy) propanol 261.01
    mesitylene 74.59
    ε-caprolactone 598.14
    p-cymene 117.96
    epichlorohydrin 639.48
    1,1,1-trichloroethane 554.48
    2-aminoethanol 1108.24
    morpholine-4-carbaldehyde 595.2
    sulfolane 532.46
    2,2,4-trimethylpentane 93.81
    2-methyltetrahydrofuran 1030.41
    n-hexyl acetate 313.99
    isooctane 56.81
    2-(2-butoxyethoxy)ethanol 472.7
    sec-butyl acetate 163.51
    tert-butyl acetate 197.4
    decalin 80.47
    glycerin 848.2
    diglyme 696.26
    acrylic acid 732.17
    isopropyl myristate 111.04
    n-butyric acid 1109.23
    acetyl acetate 240.3
    di(2-ethylhexyl) phthalate 97.17
    ethyl propionate 244.16
    nitromethane 739.75
    1,2-diethoxyethane 460.73
    benzonitrile 243.77
    trioctyl phosphate 90.29
    1-bromopropane 597.27
    gamma-valerolactone 784.47
    n-decanol 247.95
    triethyl phosphate 112.93
    4-methyl-2-pentanol 266.19
    propionitrile 652.36
    vinylene carbonate 284.7
    1,1,2-trichlorotrifluoroethane 673.93
    DMS 127.73
    cumene 69.14
    2-octanol 291.65
    2-hexanone 312.85
    octyl acetate 168.98
    limonene 219.88
    1,2-dimethoxyethane 666.33
    ethyl orthosilicate 127.35
    tributyl phosphate 94.56
    diacetone alcohol 299.46
    N,N-dimethylaniline 127.96
    acrylonitrile 574.57
    aniline 420.67
    1,3-propanediol 1161.68
    bromobenzene 231.35
    dibromomethane 891.82
    1,1,2,2-tetrachloroethane 711.12
    2-methyl-cyclohexyl acetate 187.26
    tetrabutyl urea 115.69
    diisobutyl methanol 202.86
    2-phenylethanol 294.58
    styrene 130.77
    dioctyl adipate 132.14
    dimethyl sulfate 116.24
    ethyl butyrate 311.75
    methyl lactate 268.14
    butyl lactate 241.81
    diethyl carbonate 167.55
    propanediol butyl ether 455.46
    triethyl orthoformate 236.07
    p-tert-butyltoluene 116.02
    methyl 4-tert-butylbenzoate 168.89
    morpholine 1333.73
    tert-butylamine 748.62
    n-dodecanol 183.12
    dimethoxymethane 370.53
    ethylene carbonate 285.45
    cyrene 207.47
    2-ethoxyethyl acetate 252.37
    2-ethylhexyl acetate 232.5
    1,2,4-trichlorobenzene 232.27
    4-methylpyridine 415.21
    dibutyl ether 370.68
    2,6-dimethyl-4-heptanol 202.86
    DEF 451.0
    dimethyl isosorbide 298.06
    tetrachloroethylene 595.62
    eugenol 208.15
    triacetin 208.15
    span 80 363.61
    1,4-butanediol 418.86
    1,1-dichloroethane 664.53
    2-methyl-1-pentanol 421.0
    methyl formate 308.06
    2-methyl-1-butanol 781.25
    n-decane 114.42
    butyronitrile 699.5
    3,7-dimethyl-1-octanol 264.65
    1-chlorooctane 224.98
    1-chlorotetradecane 81.04
    n-nonane 127.84
    undecane 78.17
    tert-butylcyclohexane 72.73
    cyclooctane 145.92
    cyclopentanol 993.16
    tetrahydropyran 1259.95
    tert-amyl methyl ether 397.09
    2,5,8-trioxanonane 429.0
    1-hexene 479.59
    2-isopropoxyethanol 453.29
    2,2,2-trifluoroethanol 425.29
    methyl butyrate 311.78

    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