Fosetyl

Overview IFRA Request a quote

  • Identifiers

    CAS number
    15845-66-6

    Molecular formula
    C2H6O3P+

    SMILES
    CCO[P+](=O)O

    Safety labels

  • Odor profile

    Fragrance
    Fruity 55.18%
    Ethereal 49.37%
    Sharp 40.5%
    Sour 37.05%
    Odorless 35.95%
    Pungent 33.6%
    Winey 33.04%
    Fresh 29.83%
    Fermented 27.49%
    Green 27.42%

     

    Flavor
    Odorless 45.19%
    Sour 39.78%
    Pungent 37.09%
    Sharp 35.93%
    Acidic 34.7%
    Rancid 33.67%
    Vinegar 31.57%
    Cheese 29.89%
    Sweat 28.56%
    Soy 24.01%

     

    Odor impact est.
    High

  • Properties

    pKa est.
    10.07 (weak base)

    Molecular weight
    109.04 g/mol

    Flash point

    • 60.25 ˚C est.

  • Synonyms

    • Fosetyl
    • Ethyl phosphite
    • Ethyl hydrogen phosphonate
    • Ethyl phosphonate
    • 15845-66-6
    • Monoethyl phosphonate
    • Phosphonic acid, monoethyl ester
    • Monoethyl phosphite
    • Fosetyl [ISO]
    • ethoxy-hydroxy-oxophosphanium
    • ZUL337Z2KC
    • TL 463
    • UNII-ZUL337Z2KC
    • BRN 0969557
    • Aluminiumfosetyle
    • Fosetyle-Al
    • monoethylphosphonate
    • ethyl phosphinic acid
    • SCHEMBL28925
    • SCHEMBL527014
    • ethyl hydrogen (R)-phosphonate
    • CHEMBL1231082
    • DTXSID2057990
    • SCHEMBL14836378
    • SCHEMBL30777482
    • CHEBI:40926
    • VUERQRKTYBIULR-UHFFFAOYSA-N
    • AKOS006227665
    • NS00014206
    • NS00014285
    • C18401
    • 845E666
    • Q27120411
    • 15845-66-6

  • Applications

    Fosetyl (CAS 15845-66-6) is used in agriculture as a systemic fungicide targeting oomycete pathogens such as Phytophthora and Pythium, applied as a soil drench, fertigation, or foliar spray on crops including grapes, citrus, vegetables, potatoes, and ornamentals to protect roots, crowns, and leaves from infection; in addition to its fungicidal action, fosetyl-Al is often described as a plant defense elicitor or biostimulant capable of priming resistance responses in treated plants; formulations are commonly the aluminum salt fosetyl-Al to improve handling and compatibility with irrigation and spray systems; regulatory labeling and crop-specific limits apply in different regions.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 144.39
    methanol 247.23
    isopropanol 76.76
    water 159.23
    ethyl acetate 24.73
    n-propanol 82.64
    acetone 71.64
    n-butanol 71.92
    acetonitrile 31.26
    DMF 382.2
    toluene 6.88
    isobutanol 43.98
    1,4-dioxane 89.28
    methyl acetate 28.88
    THF 145.1
    2-butanone 38.18
    n-pentanol 48.55
    sec-butanol 52.4
    n-hexane 2.25
    ethylene glycol 147.06
    NMP 368.99
    cyclohexane 3.37
    DMSO 562.11
    n-butyl acetate 22.11
    n-octanol 28.87
    chloroform 11.23
    n-propyl acetate 17.19
    acetic acid 181.17
    dichloromethane 19.29
    cyclohexanone 82.95
    propylene glycol 92.48
    isopropyl acetate 18.27
    DMAc 176.42
    2-ethoxyethanol 142.94
    isopentanol 46.41
    n-heptane 3.32
    ethyl formate 46.93
    1,2-dichloroethane 25.33
    n-hexanol 41.67
    2-methoxyethanol 297.86
    isobutyl acetate 7.82
    tetrachloromethane 3.83
    n-pentyl acetate 27.34
    transcutol 187.9
    n-heptanol 32.98
    ethylbenzene 4.79
    MIBK 24.6
    2-propoxyethanol 112.31
    tert-butanol 86.3
    MTBE 22.11
    2-butoxyethanol 80.78
    propionic acid 77.94
    o-xylene 10.25
    formic acid 286.75
    diethyl ether 24.95
    m-xylene 9.03
    p-xylene 5.72
    chlorobenzene 11.98
    dimethyl carbonate 19.55
    n-octane 1.79
    formamide 370.6
    cyclopentanone 116.6
    2-pentanone 41.28
    anisole 21.16
    cyclopentyl methyl ether 50.31
    gamma-butyrolactone 162.82
    1-methoxy-2-propanol 177.15
    pyridine 47.45
    3-pentanone 23.75
    furfural 205.97
    n-dodecane 1.58
    diethylene glycol 145.78
    diisopropyl ether 7.6
    tert-amyl alcohol 62.97
    acetylacetone 58.6
    n-hexadecane 1.72
    acetophenone 31.03
    methyl propionate 31.53
    isopentyl acetate 18.15
    trichloroethylene 31.18
    n-nonanol 26.76
    cyclohexanol 57.71
    benzyl alcohol 37.89
    2-ethylhexanol 19.82
    isooctanol 22.97
    dipropyl ether 16.14
    1,2-dichlorobenzene 15.41
    ethyl lactate 26.11
    propylene carbonate 61.07
    n-methylformamide 214.7
    2-pentanol 40.55
    n-pentane 3.24
    1-propoxy-2-propanol 67.46
    1-methoxy-2-propyl acetate 36.55
    2-(2-methoxypropoxy) propanol 65.95
    mesitylene 8.35
    ε-caprolactone 85.5
    p-cymene 7.4
    epichlorohydrin 107.04
    1,1,1-trichloroethane 8.69
    2-aminoethanol 165.83
    morpholine-4-carbaldehyde 287.06
    sulfolane 302.54
    2,2,4-trimethylpentane 1.76
    2-methyltetrahydrofuran 75.75
    n-hexyl acetate 33.69
    isooctane 1.39
    2-(2-butoxyethoxy)ethanol 103.99
    sec-butyl acetate 10.19
    tert-butyl acetate 28.17
    decalin 2.06
    glycerin 203.77
    diglyme 143.62
    acrylic acid 95.98
    isopropyl myristate 14.09
    n-butyric acid 77.52
    acetyl acetate 18.89
    di(2-ethylhexyl) phthalate 23.28
    ethyl propionate 15.08
    nitromethane 204.44
    1,2-diethoxyethane 35.83
    benzonitrile 27.29
    trioctyl phosphate 18.31
    1-bromopropane 9.21
    gamma-valerolactone 229.6
    n-decanol 20.89
    triethyl phosphate 14.2
    4-methyl-2-pentanol 20.54
    propionitrile 21.06
    vinylene carbonate 58.33
    1,1,2-trichlorotrifluoroethane 113.88
    DMS 23.82
    cumene 5.28
    2-octanol 22.37
    2-hexanone 20.54
    octyl acetate 20.9
    limonene 10.87
    1,2-dimethoxyethane 120.81
    ethyl orthosilicate 12.96
    tributyl phosphate 18.53
    diacetone alcohol 78.3
    N,N-dimethylaniline 22.16
    acrylonitrile 39.13
    aniline 32.12
    1,3-propanediol 185.83
    bromobenzene 7.44
    dibromomethane 12.43
    1,1,2,2-tetrachloroethane 30.52
    2-methyl-cyclohexyl acetate 19.01
    tetrabutyl urea 32.25
    diisobutyl methanol 13.52
    2-phenylethanol 33.65
    styrene 5.79
    dioctyl adipate 23.72
    dimethyl sulfate 65.76
    ethyl butyrate 18.06
    methyl lactate 56.85
    butyl lactate 37.2
    diethyl carbonate 12.02
    propanediol butyl ether 80.68
    triethyl orthoformate 16.29
    p-tert-butyltoluene 7.64
    methyl 4-tert-butylbenzoate 51.62
    morpholine 136.25
    tert-butylamine 37.18
    n-dodecanol 15.53
    dimethoxymethane 104.3
    ethylene carbonate 43.31
    cyrene 78.57
    2-ethoxyethyl acetate 39.68
    2-ethylhexyl acetate 13.54
    1,2,4-trichlorobenzene 19.75
    4-methylpyridine 44.51
    dibutyl ether 14.61
    2,6-dimethyl-4-heptanol 13.52
    DEF 82.19
    dimethyl isosorbide 98.74
    tetrachloroethylene 26.12
    eugenol 62.89
    triacetin 35.15
    span 80 69.45
    1,4-butanediol 79.43
    1,1-dichloroethane 9.76
    2-methyl-1-pentanol 31.81
    methyl formate 122.16
    2-methyl-1-butanol 42.46
    n-decane 2.33
    butyronitrile 26.58
    3,7-dimethyl-1-octanol 20.25
    1-chlorooctane 8.56
    1-chlorotetradecane 4.29
    n-nonane 2.16
    undecane 1.86
    tert-butylcyclohexane 1.89
    cyclooctane 1.96
    cyclopentanol 85.06
    tetrahydropyran 45.85
    tert-amyl methyl ether 23.55
    2,5,8-trioxanonane 124.11
    1-hexene 5.55
    2-isopropoxyethanol 67.08
    2,2,2-trifluoroethanol 81.86
    methyl butyrate 25.9

    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