(3-Aminopropyl)triethoxysilane

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  • Identifiers

    CAS number
    919-30-2

    Molecular formula
    C9H23NO3Si

    SMILES
    CCO[Si](CCCN)(OCC)OCC

    Safety labels

    Corrosive
    Corrosive

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Odorless 40.64%
    Fruity 37.37%
    Alcoholic 30.08%
    Sweet 25.87%
    Fresh 23.25%
    Ethereal 20.68%
    Oily 19.46%
    Cooling 17.39%
    Fishy 17.39%
    Grape 16.68%

     

    Flavor
    Fruity 56.98%
    Green 41.14%
    Fatty 38.06%
    Sweet 36.67%
    Vegetable 34.19%
    Tropical 30.33%
    Earthy 29.37%
    Fruit 27.59%
    Pineapple 27.22%
    Sulfurous 26.7%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    9.41 (weak base)

    Molecular weight
    221.37 g/mol

    Melting point expt.

    • -70 °C

    Boiling point

    • 217 °C

    Flash point

    • 83.85 ˚C est.
    • 98 °C (closed cup)

  • Synonyms

    • 3-Aminopropyltriethoxysilane
    • 919-30-2
    • (3-Aminopropyl)triethoxysilane
    • APTES
    • 3-(TRIETHOXYSILYL)PROPYLAMINE
    • 1-Propanamine, 3-(triethoxysilyl)-
    • Silicone A-1100
    • Propylamine, 3-(triethoxysilyl)-
    • Nuca 1100
    • Silane 1100
    • Silane amg-9
    • Aminopropyltriethoxysilane
    • Triethoxy(3-aminopropyl)silane
    • gamma-Aminopropyltriethoxysilane
    • 3-(Triethoxysilyl)-1-propanamine
    • (gamma-Aminopropyl)triethoxysilane
    • Uc-A 1100
    • Silane, (3-aminopropyl)triethoxy-
    • aminopropyl triethoxysilane
    • (aminopropyl)triethoxysilane
    • Hydrosil 2627
    • Silicone A 1100
    • A 1100
    • A 1112
    • Silane, gamma-aminopropyltriethoxy-
    • amino-propyl-triethoxysilane
    • 3-aminopropyl triethoxysilane
    • gamma-triethoxysilylpropylamine
    • A 1102 (silane derivative)
    • L8S6UBW552
    • DTXSID2027333
    • Silsoft A-1100
    • NSC-95428
    • DTXCID407333
    • Xiameter(R) OFS-6011 silane
    • APTES cpd
    • (3-aminopropyl)triethoxy silane
    • RefChem:496290
    • 213-048-4
    • 619-243-4
    • 96726-79-3
    • 3-(triethoxysilyl)propan-1-amine
    • 3-Triethoxysilylpropylamine
    • 3-triethoxysilylpropan-1-amine
    • AGM-9
    • AGM 9
    • NSC 95428
    • Triethoxy-3-aminopropylsilane
    • Triethoxyaminopropylsilane
    • (.gamma.-Aminopropyl)triethoxysilane
    • 3-AMINOPROPYL-TRIETHOXYSILANE
    • MFCD00008207
    • MFCD01324904
    • Silane, (.gamma.-aminopropyl)triethoxy-
    • Dynasylan AMEO
    • 3-?Aminopropyltriethoxy?silane
    • CAS-919-30-2
    • Prosil 220
    • HSDB 5767
    • EINECS 213-048-4
    • BRN 1754988
    • UNII-L8S6UBW552
    • 3-triethoxysilyl-1-propanamine
    • (3-Aminopropyl)triethoxylsilane
    • 3-(Triethoxysilyl)-1-propylamine
    • Dynasylan AMEO-P
    • GAPS
    • aminopropyltriethoxy silane
    • Union Carbide A-1100
    • 3-Aminopropltriethoxysilane
    • aminopropyl triethoxy silane
    • EC 213-048-4
    • 3-aminopropytriethoxy silane
    • 3-aminopropyltriethoxylsilane
    • NCIOpen2_007962
    • 3-aminopropyltriethoxy silane
    • 3-aminopropyltriethoxy-silane
    • C 50752
    • SCHEMBL18080
    • ??-Aminopropyltriethoxysilane
    • 4-04-00-04273 (Beilstein Handbook Reference)
    • SCHEMBL282464
    • 3-aminopropyl(triethoxy)silane
    • orb1909141
    • SCHEMBL4428369
    • SCHEMBL8741672
    • (3-aminopropyl)-triethoxysilane
    • gamma-aminopropyl-triethoxysilane
    • CHEMBL1542365
    • gamma-aminopropyl triethoxy silane
    • 3-Aminopropyltriethoxysilane,APTES
    • (C2H5O)3Si(CH2)3NH2
    • BB_SC-02568
    • HY-D0175
    • NSC95428
    • WLN: Z3-SI-O2&O2&O2
    • Tox21_201446
    • Tox21_303330
    • BBL027698
    • STK802166
    • (3-Aminopropyl)triethoxysilane(APTS)
    • (3-Aminopropyl)triethoxysilane, 99%
    • 3-(Triethoxysilyl)propylamine [HSDB]
    • AKOS008901315
    • FA34251
    • .GAMMA.-AMINPROPYLTRIETHOXYSILANE
    • .GAMMA.-TRIETHOXYSILYLPROPYLAMINE
    • (3-Aminopropyl)triethoxysilane, >=98%
    • NCGC00090985-01
    • NCGC00090985-02
    • NCGC00090985-03
    • NCGC00257040-01
    • NCGC00258997-01
    • AS-14523
    • BP-31043
    • KH-550 AME0 3-Aminopropyltriethoxysilane
    • (3-Aminopropyl)triethoxysilane, >=98.0%
    • DB-028361
    • A0439
    • CS-0010101
    • NS00042455
    • D72483
    • EN300-371067
    • S00800
    • A844104
    • Q4542878
    • 3-(Triethoxysilyl)-1-propylamine 100 microg/mL in Acetonitrile
    • 919-30-2

  • Applications

    (3-Aminopropyl)triethoxysilane, CAS 919-30-2, is a versatile silane coupling agent used to functionalize inorganic surfaces and improve adhesion in coatings, inks, adhesives, and polymer composites. It provides amine functionality on glass, silica, and metal-oxide surfaces, enabling covalent bonding with epoxy resins, isocyanates, or biomolecules, and is widely employed for surface modification and interfacial crosslinking; it is also used as an intermediate to prepare amine-functionalized polymers and as a linker for immobilizing enzymes or other biomolecules in sensors and electronics-related applications.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 909.7
    methanol 1699.55
    isopropanol 652.53
    water 22.27
    ethyl acetate 261.01
    n-propanol 853.86
    acetone 437.58
    n-butanol 562.55
    acetonitrile 441.28
    DMF 983.88
    toluene 253.56
    isobutanol 528.0
    1,4-dioxane 742.35
    methyl acetate 340.55
    THF 1074.61
    2-butanone 404.94
    n-pentanol 492.76
    sec-butanol 623.16
    n-hexane 68.35
    ethylene glycol 368.2
    NMP 1020.21
    cyclohexane 211.75
    DMSO 1200.31
    n-butyl acetate 334.96
    n-octanol 240.89
    chloroform 2596.81
    n-propyl acetate 286.12
    acetic acid 884.6
    dichloromethane 2084.73
    cyclohexanone 918.14
    propylene glycol 486.4
    isopropyl acetate 182.47
    DMAc 730.02
    2-ethoxyethanol 574.49
    isopentanol 343.86
    n-heptane 81.4
    ethyl formate 430.98
    1,2-dichloroethane 914.8
    n-hexanol 437.43
    2-methoxyethanol 864.49
    isobutyl acetate 208.03
    tetrachloromethane 487.1
    n-pentyl acetate 330.83
    transcutol 463.11
    n-heptanol 277.12
    ethylbenzene 137.47
    MIBK 173.26
    2-propoxyethanol 543.17
    tert-butanol 517.8
    MTBE 300.04
    2-butoxyethanol 393.81
    propionic acid 703.8
    o-xylene 170.07
    formic acid 567.15
    diethyl ether 336.66
    m-xylene 133.19
    p-xylene 202.37
    chlorobenzene 513.41
    dimethyl carbonate 148.98
    n-octane 41.16
    formamide 544.16
    cyclopentanone 900.9
    2-pentanone 279.55
    anisole 252.79
    cyclopentyl methyl ether 451.25
    gamma-butyrolactone 1122.9
    1-methoxy-2-propanol 508.5
    pyridine 899.88
    3-pentanone 256.98
    furfural 1006.45
    n-dodecane 30.96
    diethylene glycol 439.29
    diisopropyl ether 97.24
    tert-amyl alcohol 465.87
    acetylacetone 248.57
    n-hexadecane 34.39
    acetophenone 302.83
    methyl propionate 268.99
    isopentyl acetate 290.29
    trichloroethylene 1470.63
    n-nonanol 207.41
    cyclohexanol 659.2
    benzyl alcohol 377.14
    2-ethylhexanol 249.65
    isooctanol 212.04
    dipropyl ether 228.99
    1,2-dichlorobenzene 477.67
    ethyl lactate 205.28
    propylene carbonate 609.98
    n-methylformamide 717.31
    2-pentanol 325.55
    n-pentane 97.8
    1-propoxy-2-propanol 374.6
    1-methoxy-2-propyl acetate 236.94
    2-(2-methoxypropoxy) propanol 199.01
    mesitylene 91.49
    ε-caprolactone 747.92
    p-cymene 122.53
    epichlorohydrin 976.64
    1,1,1-trichloroethane 774.6
    2-aminoethanol 669.73
    morpholine-4-carbaldehyde 795.62
    sulfolane 1397.28
    2,2,4-trimethylpentane 52.28
    2-methyltetrahydrofuran 731.62
    n-hexyl acetate 328.43
    isooctane 25.5
    2-(2-butoxyethoxy)ethanol 281.64
    sec-butyl acetate 173.54
    tert-butyl acetate 183.83
    decalin 63.09
    glycerin 566.99
    diglyme 520.84
    acrylic acid 631.11
    isopropyl myristate 124.32
    n-butyric acid 689.43
    acetyl acetate 205.09
    di(2-ethylhexyl) phthalate 157.19
    ethyl propionate 201.01
    nitromethane 890.79
    1,2-diethoxyethane 245.56
    benzonitrile 498.29
    trioctyl phosphate 136.88
    1-bromopropane 574.38
    gamma-valerolactone 1107.94
    n-decanol 147.64
    triethyl phosphate 160.35
    4-methyl-2-pentanol 152.63
    propionitrile 525.47
    vinylene carbonate 689.53
    1,1,2-trichlorotrifluoroethane 962.01
    DMS 186.52
    cumene 99.64
    2-octanol 211.98
    2-hexanone 279.51
    octyl acetate 173.71
    limonene 196.89
    1,2-dimethoxyethane 638.26
    ethyl orthosilicate 158.56
    tributyl phosphate 139.42
    diacetone alcohol 220.27
    N,N-dimethylaniline 207.51
    acrylonitrile 616.85
    aniline 412.8
    1,3-propanediol 587.27
    bromobenzene 519.63
    dibromomethane 1393.82
    1,1,2,2-tetrachloroethane 1425.5
    2-methyl-cyclohexyl acetate 262.95
    tetrabutyl urea 191.57
    diisobutyl methanol 129.85
    2-phenylethanol 336.86
    styrene 198.17
    dioctyl adipate 189.21
    dimethyl sulfate 270.61
    ethyl butyrate 247.07
    methyl lactate 226.05
    butyl lactate 274.6
    diethyl carbonate 186.47
    propanediol butyl ether 331.96
    triethyl orthoformate 223.46
    p-tert-butyltoluene 118.25
    methyl 4-tert-butylbenzoate 264.67
    morpholine 945.54
    tert-butylamine 342.81
    n-dodecanol 114.74
    dimethoxymethane 430.55
    ethylene carbonate 599.45
    cyrene 328.67
    2-ethoxyethyl acetate 280.19
    2-ethylhexyl acetate 268.14
    1,2,4-trichlorobenzene 564.47
    4-methylpyridine 692.01
    dibutyl ether 196.13
    2,6-dimethyl-4-heptanol 129.85
    DEF 420.64
    dimethyl isosorbide 351.03
    tetrachloroethylene 1021.93
    eugenol 289.95
    triacetin 257.73
    span 80 264.89
    1,4-butanediol 372.82
    1,1-dichloroethane 808.59
    2-methyl-1-pentanol 319.31
    methyl formate 513.16
    2-methyl-1-butanol 401.75
    n-decane 53.43
    butyronitrile 509.97
    3,7-dimethyl-1-octanol 177.95
    1-chlorooctane 178.44
    1-chlorotetradecane 69.51
    n-nonane 52.7
    undecane 38.24
    tert-butylcyclohexane 51.13
    cyclooctane 61.1
    cyclopentanol 794.76
    tetrahydropyran 839.28
    tert-amyl methyl ether 242.77
    2,5,8-trioxanonane 324.11
    1-hexene 186.9
    2-isopropoxyethanol 343.52
    2,2,2-trifluoroethanol 397.45
    methyl butyrate 327.99

    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