Phosmet

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  • Identifiers

    CAS number
    732-11-6

    Molecular formula
    C11H12NO4PS2

    SMILES
    COP(=S)(OC)SCN1C(=O)C2=CC=CC=C2C1=O

    Safety labels

    Acute Toxic
    Acute Toxic

    Health Hazard
    Health

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Odorless 45.83%
    Sulfurous 35.56%
    Meaty 31.7%
    Savory 31.08%
    Roasted 29.49%
    Cooked 27.55%
    Onion 21.71%
    Grape 21.41%
    Fresh 19.08%
    Fruity 18.97%

     

    Flavor
    Bitter 71.7%
    Odorless 27.11%
    Bland 22.32%
    Taco 19.97%
    Cooked 19.37%
    Nitrile 19.3%
    Roasted peanuts 19.22%
    Scallion 19.21%
    Cedarleaf 18.76%
    Roasted 18.76%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    2.8

    pKa est.
    5.72 (weak acid)

    Molecular weight
    317.3 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Very fast

    Melting point expt.

    • 161 °F (EPA, 1998)
    • 72-72.7 °C
    • 72 °C

    Boiling point

    • Decomposes below boiling point (EPA, 1998)

    Flash point

    • 187.82 ˚C est.

    Solubility expt.

    • 100 G/KG IN DICHLOROMETHANE, 4-METHYLPENT-3-EN-2-ONE, BUTANONE
    • At 25 °C: 25 mg/L water; 650 g/L acetone; 600 g/L benzene; 5 g/L kerosene; 50 g/L methanol; 300 g/L toluene, methyl isobutyl ketone; 250 g/L xylene.
    • In water, 24.4 mg/L at 20 °C
    • Solubility in water, g/100ml at 20 °C: 0.003

  • Synonyms

    • Phosmet
    • Fosmet
    • 732-11-6
    • Decemthion
    • Phthalophos
    • Imidathion
    • Percolate
    • Prolate
    • IMIDAN
    • Ftalophos
    • Kemolate
    • Safidon
    • Simidan
    • Smidan
    • Decemthion P-6
    • PMP (Pesticide)
    • Phtalofos
    • Prolate E
    • Stauffer R 1504
    • Imidan WP
    • Prolate 5 Dust
    • Decemtion P-6
    • Imidan 5 Dust
    • O,O-Dimethyl S-phthalimidomethyl phosphorodithioate
    • Prolate 8-OS
    • O,O-Dimethyl phthalimidomethyl phosphorodithioate
    • Caswell No. 543
    • O,O-Dimethyl S-(phthalimidomethyl) dithiophosphate
    • Phosmet [BAN]
    • phthalimidomethyl-o,o-dimethyl phosphorodithioate
    • CCRIS 5295
    • ENT 25,705
    • HSDB 1734
    • 2-(dimethoxyphosphinothioylsulfanylmethyl)isoindole-1,3-dione
    • Phthalimido O,O-dimethyl phosphorodithioate
    • EINECS 211-987-4
    • UNII-VN04LI540Y
    • R 1504
    • EPA Pesticide Chemical Code 059201
    • Phthalimidomethyl O,O-dimethyl phosphorodithioate
    • (O,O-Dimethyl-phthalimidiomethyl-dithiophosphate)
    • BRN 0264869
    • VN04LI540Y
    • DTXSID5024261
    • CHEBI:38786
    • O,O-Dimethyl S-(N-phthalimidomethyl)dithiophosphate
    • O,O-Dimethyl S-(phthalimidomethyl)phosphorodithioate
    • AI3-25705
    • R-1504
    • N-(Dimethoxyphosphinothioylthiomethyl)phthalimide
    • O,O-Dimethyl S-phthalimidomethyl phosphorothionate
    • SMR000054364
    • O,O-Dimethyl S-(phthalimididomethyl)phosphorodithioate
    • Phthalimide, N-(mercaptomethyl)-, S-ester with O,O-dimethyl phosphorodithioate
    • MLS000104429
    • MLS001074294
    • Phosphorodithioic acid, O,O-dimethyl ester, S-ester with N-(mercaptomethyl)phthalimide
    • Phosphorodithioic acid, S-((1,3-dihydro-1,3-dioxo-isoindol-2-yl)methyl) O,O-dimethyl ester
    • S-((1,3-Dihydro-1,3-dioxo-2H-isoindol-2-yl)methyl) O,O-dimethyl phosphorodithioate
    • DTXCID004261
    • N-(Mercaptomethyl)phthalimide S-(O,O-dimethyl phosphorodithioate)
    • O,O-Dimethyl phosphorodithioate S-ester with N-(mercaptomethyl)phthalimide
    • S-((1,3-Dioxo-2H-isoindol-2-yl)methyl) O,O-dimethyl phosphorodithioate
    • Phosmet (BAN)
    • S-[(1,3-Dioxo-1,3-dihydro-2H-isoindol-2-yl)methyl] o,o-dimethyl dithiophosphate
    • Phosphorodithioic acid O,O-dimethyl ester S-ester with N-(mercaptomethyl) phthalimide
    • Phosphorodithioic acid, S-((1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)methyl) O,O-dimethyl ester
    • S-((1,3-Dihydro-1,3-dioxo-2H-isoindol-2-yl)methyl) O,O-dimethy phosphorodithioate
    • S-((1,3-Dihydro-1,3-dioxo-2H-isoindol-2-yl)methyl)phosphorodithioic acid O,O-dimethyl ester
    • NCGC00080392-01
    • PHOSMET (MART.)
    • PHOSMET [MART.]
    • Phosphorodithioic acid, S-[(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)methyl] O,O-dimethyl ester
    • S-[(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)methyl] O,O-dimethyl phosphorodithioate
    • N-(Mercaptomethyl)phthalimide S-(O,O-dimethyl) phosphorodithioate
    • N-(MERCAPTOMETHYL) PHTHALIMIDE S-(O,O-DIMETHYL PHOSPHORODITHIOATE)
    • 5104-30-3
    • CAS-732-11-6
    • Phosmet-d6 100 Amicrog/mL in Acetone
    • Phosmet [BSI:ISO]
    • SR-01000195222
    • Phosmet [BAN:BSI:ISO]
    • imidan/phosmet
    • Del-Phos
    • S-((1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)methyl) O,O-dimethyl dithiophosphate
    • S-((1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)methyl) O,O-dimethyl phosphorodithioate
    • Prolate I-E
    • DECEMTHIO
    • DECEMTION
    • ORBISECT
    • ORDATOX
    • PORECT
    • Poron (TN)
    • Del-Phos (TN)
    • PHOSMET [HSDB]
    • PHOSMET [ISO]
    • PHOSMET [MI]
    • Opera_ID_1806
    • CBMicro_004801
    • DECEMTHION EK 20
    • STARBAR GX 118
    • SCHEMBL3620
    • Oprea1_616683
    • PHOSMET [GREEN BOOK]
    • cid_12901
    • CHEMBL1481873
    • BDBM79427
    • LMNZTLDVJIUSHT-UHFFFAOYSA-
    • HMS2230D06
    • HMS3370L13
    • N-(Mercaptomethyl)phthalimide S-(O,O-dimethyl phosphorothionate)
    • SMSF0003235
    • Tox21_110993
    • Tox21_202316
    • Tox21_300093
    • ENT 25705
    • Phosmet 10 microg/mL in Cyclohexane
    • Phosmet 1000 microg/mL in Acetone
    • STK097158
    • AKOS001603761
    • Phosmet 100 microg/mL in Cyclohexane
    • Tox21_110993_1
    • USEPA/OPP Pesticide Code: 59201
    • CB06771
    • DB11448
    • Phosmet 100 microg/mL in Acetonitrile
    • NCGC00080392-02
    • NCGC00080392-03

  • Applications

    Phosmet (CAS 732-11-6) is primarily used as an organophosphate insecticide in agriculture to control pests on a range of crops, including apples, pears, stone fruits, citrus, grapes, and vegetables. It is formulated into emulsifiable concentrates, wettable powders, and granules for field and greenhouse applications and is typically applied by professional crop protection programs under local regulations. The mode of action involves acetylcholinesterase inhibition in pests, leading to disruption of neural signaling. Uses commonly include season-long crop protection in orchards and vegetable production, and it may be integrated into pest management programs depending on regulatory approvals and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 3.48
    methanol 5.38
    isopropanol 2.3
    water 0.12
    ethyl acetate 14.61
    n-propanol 2.94
    acetone 17.79
    n-butanol 2.13
    acetonitrile 11.69
    DMF 166.26
    toluene 2.16
    isobutanol 1.89
    1,4-dioxane 20.69
    methyl acetate 19.91
    THF 38.65
    2-butanone 17.82
    n-pentanol 1.66
    sec-butanol 2.93
    n-hexane 0.08
    ethylene glycol 4.94
    NMP 170.33
    cyclohexane 0.27
    DMSO 79.04
    n-butyl acetate 9.08
    n-octanol 0.94
    chloroform 29.69
    n-propyl acetate 8.68
    acetic acid 22.83
    dichloromethane 29.98
    cyclohexanone 27.5
    propylene glycol 4.02
    isopropyl acetate 9.85
    DMAc 124.61
    2-ethoxyethanol 16.86
    isopentanol 1.99
    n-heptane 0.18
    ethyl formate 14.33
    1,2-dichloroethane 17.21
    n-hexanol 2.32
    2-methoxyethanol 30.32
    isobutyl acetate 3.98
    tetrachloromethane 2.46
    n-pentyl acetate 5.89
    transcutol 33.32
    n-heptanol 1.75
    ethylbenzene 1.32
    MIBK 7.39
    2-propoxyethanol 18.66
    tert-butanol 3.21
    MTBE 3.69
    2-butoxyethanol 9.58
    propionic acid 11.91
    o-xylene 2.42
    formic acid 25.76
    diethyl ether 4.7
    m-xylene 1.81
    p-xylene 1.7
    chlorobenzene 6.72
    dimethyl carbonate 27.22
    n-octane 0.08
    formamide 59.43
    cyclopentanone 51.23
    2-pentanone 13.15
    anisole 9.82
    cyclopentyl methyl ether 11.35
    gamma-butyrolactone 65.16
    1-methoxy-2-propanol 21.97
    pyridine 21.59
    3-pentanone 12.47
    furfural 86.64
    n-dodecane 0.08
    diethylene glycol 21.75
    diisopropyl ether 1.49
    tert-amyl alcohol 4.0
    acetylacetone 32.4
    n-hexadecane 0.1
    acetophenone 17.99
    methyl propionate 20.06
    isopentyl acetate 7.74
    trichloroethylene 54.45
    n-nonanol 1.19
    cyclohexanol 3.34
    benzyl alcohol 8.65
    2-ethylhexanol 1.94
    isooctanol 1.53
    dipropyl ether 3.62
    1,2-dichlorobenzene 11.16
    ethyl lactate 11.69
    propylene carbonate 32.51
    n-methylformamide 50.81
    2-pentanol 1.74
    n-pentane 0.12
    1-propoxy-2-propanol 13.48
    1-methoxy-2-propyl acetate 23.96
    2-(2-methoxypropoxy) propanol 16.28
    mesitylene 1.22
    ε-caprolactone 28.2
    p-cymene 1.95
    epichlorohydrin 62.38
    1,1,1-trichloroethane 10.53
    2-aminoethanol 6.19
    morpholine-4-carbaldehyde 126.6
    sulfolane 100.97
    2,2,4-trimethylpentane 0.13
    2-methyltetrahydrofuran 16.62
    n-hexyl acetate 5.07
    isooctane 0.08
    2-(2-butoxyethoxy)ethanol 14.01
    sec-butyl acetate 5.5
    tert-butyl acetate 11.33
    decalin 0.2
    glycerin 17.05
    diglyme 40.21
    acrylic acid 20.65
    isopropyl myristate 2.65
    n-butyric acid 11.12
    acetyl acetate 15.68
    di(2-ethylhexyl) phthalate 5.4
    ethyl propionate 9.8
    nitromethane 100.53
    1,2-diethoxyethane 9.2
    benzonitrile 11.39
    trioctyl phosphate 2.89
    1-bromopropane 3.91
    gamma-valerolactone 91.74
    n-decanol 0.92
    triethyl phosphate 8.62
    4-methyl-2-pentanol 1.35
    propionitrile 7.64
    vinylene carbonate 38.98
    1,1,2-trichlorotrifluoroethane 76.43
    DMS 16.55
    cumene 1.01
    2-octanol 1.04
    2-hexanone 7.34
    octyl acetate 3.59
    limonene 2.77
    1,2-dimethoxyethane 31.81
    ethyl orthosilicate 6.7
    tributyl phosphate 4.09
    diacetone alcohol 17.43
    N,N-dimethylaniline 8.08
    acrylonitrile 18.77
    aniline 7.22
    1,3-propanediol 7.06
    bromobenzene 5.8
    dibromomethane 11.82
    1,1,2,2-tetrachloroethane 38.22
    2-methyl-cyclohexyl acetate 8.85
    tetrabutyl urea 6.73
    diisobutyl methanol 1.63
    2-phenylethanol 8.54
    styrene 1.97
    dioctyl adipate 6.35
    dimethyl sulfate 73.29
    ethyl butyrate 9.79
    methyl lactate 26.97
    butyl lactate 8.57
    diethyl carbonate 8.79
    propanediol butyl ether 7.3
    triethyl orthoformate 8.96
    p-tert-butyltoluene 1.93
    methyl 4-tert-butylbenzoate 15.6
    morpholine 28.19
    tert-butylamine 1.49
    n-dodecanol 0.73
    dimethoxymethane 44.77
    ethylene carbonate 22.98
    cyrene 35.26
    2-ethoxyethyl acetate 15.4
    2-ethylhexyl acetate 6.16
    1,2,4-trichlorobenzene 16.78
    4-methylpyridine 18.88
    dibutyl ether 1.63
    2,6-dimethyl-4-heptanol 1.63
    DEF 32.78
    dimethyl isosorbide 40.49
    tetrachloroethylene 20.37
    eugenol 17.6
    triacetin 17.84
    span 80 10.21
    1,4-butanediol 3.1
    1,1-dichloroethane 9.82
    2-methyl-1-pentanol 1.75
    methyl formate 42.5
    2-methyl-1-butanol 2.09
    n-decane 0.12
    butyronitrile 5.66
    3,7-dimethyl-1-octanol 1.43
    1-chlorooctane 0.72
    1-chlorotetradecane 0.38
    n-nonane 0.09
    undecane 0.09
    tert-butylcyclohexane 0.14
    cyclooctane 0.12
    cyclopentanol 5.67
    tetrahydropyran 9.02
    tert-amyl methyl ether 4.45
    2,5,8-trioxanonane 30.5
    1-hexene 0.43
    2-isopropoxyethanol 9.64
    2,2,2-trifluoroethanol 23.99
    methyl butyrate 12.64

    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