Iron phosphide

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  • Identifiers

    CAS number
    12751-22-3

    Molecular formula
    FeP

    SMILES
    [P-3].[Fe+3]

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Odor impact est.
    High

  • Properties

    pKa est.
    -25.08 (strong acid)

    Molecular weight
    86.82 g/mol

    Flash point

    • -108.95 ˚C est.

  • Synonyms

    • Ferrophosphide
    • Ferrophos HRS 2131
    • Ferrophos HRS 2132
    • Iron phosphide (Fe3P)
    • EINECS 234-682-8
    • EINECS 235-798-1
    • EC 234-682-8
    • 12751-22-3
    • RefChem:148797
    • iron(3+) ion phosphanetriide
    • DTXSID50276470
    • DTXCID301436877
    • DTXSID501014198
    • 235-798-1
    • 247-751-2
    • 641-089-1
    • 12023-53-9
    • 26508-33-8
    • 8049-19-2
    • Iron phosphide
    • ferric phosphorus(-3) anion
    • iron(3+);phosphorus(3-)
    • Triiron phosphide
    • SCHEMBL76356
    • JNRQHASIGICJBU-UHFFFAOYSA-N
    • Q4492142
    • 12751-22-3

  • Applications

    Iron phosphide (FeP, CAS 12751-22-3) is primarily used in several real-world applications: as a catalyst or catalyst precursor for hydroprocessing in oil refining, including hydrodesulfurization and hydrodenitrogenation; as an electrocatalyst material for the hydrogen evolution reaction (HER) in water electrolysis and energy storage contexts; studied as a precursor or component of advanced catalysts for hydrocarbon transformation and chemical synthesis; employed in protective coatings or as a component in wear-resistant materials for industrial tooling and equipment; and investigated for potential use in magnetic and electronic materials based on the iron phosphide phase.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 171.38
    methanol 174.5
    isopropanol 102.74
    water 1.39
    ethyl acetate 111.6
    n-propanol 116.76
    acetone 187.44
    n-butanol 103.2
    acetonitrile 137.48
    DMF 216.99
    toluene 65.6
    isobutanol 74.47
    1,4-dioxane 225.73
    methyl acetate 111.71
    THF 250.73
    2-butanone 125.45
    n-pentanol 71.7
    sec-butanol 93.23
    n-hexane 28.26
    ethylene glycol 58.45
    NMP 216.91
    cyclohexane 39.47
    DMSO 231.63
    n-butyl acetate 99.1
    n-octanol 62.5
    chloroform 187.32
    n-propyl acetate 70.3
    acetic acid 161.59
    dichloromethane 158.64
    cyclohexanone 167.26
    propylene glycol 53.63
    isopropyl acetate 59.69
    DMAc 136.49
    2-ethoxyethanol 92.42
    isopentanol 73.52
    n-heptane 27.83
    ethyl formate 70.95
    1,2-dichloroethane 108.17
    n-hexanol 99.77
    2-methoxyethanol 167.63
    isobutyl acetate 45.17
    tetrachloromethane 52.54
    n-pentyl acetate 62.93
    transcutol 302.47
    n-heptanol 57.29
    ethylbenzene 31.52
    MIBK 62.04
    2-propoxyethanol 137.85
    tert-butanol 110.84
    MTBE 91.95
    2-butoxyethanol 87.02
    propionic acid 110.84
    o-xylene 40.06
    formic acid 51.73
    diethyl ether 130.68
    m-xylene 41.48
    p-xylene 40.84
    chlorobenzene 81.75
    dimethyl carbonate 48.95
    n-octane 12.45
    formamide 70.97
    cyclopentanone 203.16
    2-pentanone 112.17
    anisole 73.62
    cyclopentyl methyl ether 122.6
    gamma-butyrolactone 200.1
    1-methoxy-2-propanol 121.16
    pyridine 146.64
    3-pentanone 81.78
    furfural 169.61
    n-dodecane 10.76
    diethylene glycol 118.18
    diisopropyl ether 41.34
    tert-amyl alcohol 90.36
    acetylacetone 116.88
    n-hexadecane 11.93
    acetophenone 63.38
    methyl propionate 86.09
    isopentyl acetate 74.98
    trichloroethylene 183.11
    n-nonanol 51.86
    cyclohexanol 93.98
    benzyl alcohol 54.03
    2-ethylhexanol 60.84
    isooctanol 43.81
    dipropyl ether 72.44
    1,2-dichlorobenzene 71.32
    ethyl lactate 35.69
    propylene carbonate 108.82
    n-methylformamide 102.87
    2-pentanol 72.42
    n-pentane 31.28
    1-propoxy-2-propanol 102.58
    1-methoxy-2-propyl acetate 83.03
    2-(2-methoxypropoxy) propanol 78.45
    mesitylene 30.03
    ε-caprolactone 128.96
    p-cymene 28.6
    epichlorohydrin 159.43
    1,1,1-trichloroethane 115.58
    2-aminoethanol 78.48
    morpholine-4-carbaldehyde 192.17
    sulfolane 213.78
    2,2,4-trimethylpentane 14.23
    2-methyltetrahydrofuran 183.1
    n-hexyl acetate 86.49
    isooctane 12.59
    2-(2-butoxyethoxy)ethanol 114.57
    sec-butyl acetate 45.82
    tert-butyl acetate 69.73
    decalin 17.63
    glycerin 74.83
    diglyme 179.98
    acrylic acid 103.41
    isopropyl myristate 38.87
    n-butyric acid 116.01
    acetyl acetate 74.85
    di(2-ethylhexyl) phthalate 35.68
    ethyl propionate 58.86
    nitromethane 196.72
    1,2-diethoxyethane 112.64
    benzonitrile 79.64
    trioctyl phosphate 29.45
    1-bromopropane 84.72
    gamma-valerolactone 194.6
    n-decanol 40.9
    triethyl phosphate 31.5
    4-methyl-2-pentanol 41.28
    propionitrile 94.91
    vinylene carbonate 98.61
    1,1,2-trichlorotrifluoroethane 120.56
    DMS 69.2
    cumene 23.61
    2-octanol 43.96
    2-hexanone 78.35
    octyl acetate 50.03
    limonene 46.2
    1,2-dimethoxyethane 139.57
    ethyl orthosilicate 31.8
    tributyl phosphate 34.51
    diacetone alcohol 84.45
    N,N-dimethylaniline 48.88
    acrylonitrile 110.46
    aniline 73.49
    1,3-propanediol 102.3
    bromobenzene 85.21
    dibromomethane 122.93
    1,1,2,2-tetrachloroethane 137.37
    2-methyl-cyclohexyl acetate 48.04
    tetrabutyl urea 46.31
    diisobutyl methanol 38.19
    2-phenylethanol 70.51
    styrene 43.76
    dioctyl adipate 48.92
    dimethyl sulfate 72.94
    ethyl butyrate 61.43
    methyl lactate 53.08
    butyl lactate 49.56
    diethyl carbonate 40.96
    propanediol butyl ether 83.51
    triethyl orthoformate 44.42
    p-tert-butyltoluene 29.14
    methyl 4-tert-butylbenzoate 63.3
    morpholine 211.69
    tert-butylamine 77.56
    n-dodecanol 33.23
    dimethoxymethane 124.25
    ethylene carbonate 79.26
    cyrene 67.19
    2-ethoxyethyl acetate 85.43
    2-ethylhexyl acetate 64.19
    1,2,4-trichlorobenzene 81.36
    4-methylpyridine 122.35
    dibutyl ether 67.12
    2,6-dimethyl-4-heptanol 38.19
    DEF 113.44
    dimethyl isosorbide 114.77
    tetrachloroethylene 106.06
    eugenol 68.53
    triacetin 77.45
    span 80 80.39
    1,4-butanediol 45.04
    1,1-dichloroethane 114.15
    2-methyl-1-pentanol 59.95
    methyl formate 80.28
    2-methyl-1-butanol 72.71
    n-decane 15.58
    butyronitrile 94.15
    3,7-dimethyl-1-octanol 52.63
    1-chlorooctane 44.42
    1-chlorotetradecane 21.21
    n-nonane 16.57
    undecane 12.59
    tert-butylcyclohexane 17.58
    cyclooctane 15.83
    cyclopentanol 108.5
    tetrahydropyran 187.53
    tert-amyl methyl ether 72.51
    2,5,8-trioxanonane 134.13
    1-hexene 60.25
    2-isopropoxyethanol 67.98
    2,2,2-trifluoroethanol 53.65
    methyl butyrate 74.83

    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