Ferrous Oxalate

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  • Identifiers

    CAS number
    516-03-0

    Molecular formula
    C2FeO4

    SMILES
    C(=O)(C(=O)[O-])[O-].[Fe+2]

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Odorless 60.74%
    Caramellic 40.27%
    Sweet 36.81%
    Sour 30.07%
    Burnt 28.82%
    Buttery 26.1%
    Sharp 22.78%
    Fatty 22.34%
    Creamy 21.57%
    Winey 21.3%

     

    Flavor
    Odorless 48.35%
    Nutty 30.14%
    Very mild 29.98%
    Caramellic 27.32%
    Sour 26.99%
    Musty 21.09%
    Urine 19.67%
    Yeast 19.67%
    Bread crust 19.66%
    Maple syrup 19.62%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    1.41 (strong acid)

    Molecular weight
    143.86 g/mol

    Melting point expt.

    • MP: DECOMP 190 °C /DIHYDRATE/

    Flash point

    • 72.11 ˚C est.

  • Synonyms

    • FERROUS OXALATE
    • 516-03-0
    • Iron(II) oxalate
    • Iron protoxalate
    • Iron(2+) oxalate
    • iron(2+);oxalate
    • DZP4YV3ICV
    • UNII-DZP4YV3ICV
    • Iron oxalate (FeC2O4)
    • EINECS 208-217-4
    • Oxalic acid, iron(2+) salt (1:1)
    • HSDB 463
    • Iron(II) oxalate hydrate
    • FERROUS OXALATE [MI]
    • Ethanedioic acid, iron(2+) salt (1:1)
    • FERROUS OXALATE [HSDB]
    • FERROX (FE(C2O4))
    • FERROUS OXALATE [MART.]
    • FERROUS OXALATE (1:1)
    • FERROUS OXALATE [WHO-DD]
    • Iron, [ethanedioato(2-)-.kappa.O1,.kappa.O2]-
    • FERROUS OXALATE (FE(C2O4))
    • OXALIC ACID, IRON(2+) SALT
    • Iron, [ethanedioato(2-)-kO1,kO2]-
    • IRON, (ETHANEDIOATO(2-)-O,O')-
    • Iron, (ethanedioato(2-)-kappaO1,kappaO2)-
    • IRON OXALATE [FEC2O4]
    • FERROUS OXALATE (MART.)
    • IRON, (ETHANEDIOATO(2-)-.KAPPA.O1,.KAPPA.O2)-
    • DTXSID4060159
    • FERROUSOXALATE
    • ferrous oxalate hydrate
    • 611-981-5
    • SCHEMBL72959
    • ?(2)-iron(2+) oxalate ion
    • DTXCID7041041
    • OXALIC ACID, FERROUS SALT
    • OWZIYWAUNZMLRT-UHFFFAOYSA-L
    • AKOS015915318
    • CS-0158500
    • NS00087565
    • NS00093531
    • Q1990904

  • Applications

    Ferrous Oxalate (CAS 516-03-0) is commonly used as a solid source of Fe2+ for inorganic synthesis and as a starting material for preparing iron(II)–oxalate complexes; it can function as a chelating/ligand-containing reagent for coordination chemistry and related laboratory studies; it may be employed as a precursor to iron-containing materials such as oxides or ferrites by thermal decomposition, with potential applications in pigment production or catalysis; it can serve as a niche iron source in specialty coatings and metal finishing formulations; and it can act as an intermediate in organic synthesis where iron(II) species are required.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 34.38
    methanol 71.89
    isopropanol 19.43
    water 23.01
    ethyl acetate 10.82
    n-propanol 19.91
    acetone 31.29
    n-butanol 13.76
    acetonitrile 18.28
    DMF 202.02
    toluene 2.58
    isobutanol 9.91
    1,4-dioxane 27.34
    methyl acetate 19.93
    THF 31.94
    2-butanone 19.5
    n-pentanol 8.73
    sec-butanol 15.26
    n-hexane 1.32
    ethylene glycol 51.39
    NMP 149.46
    cyclohexane 4.57
    DMSO 466.0
    n-butyl acetate 6.85
    n-octanol 7.49
    chloroform 6.53
    n-propyl acetate 5.61
    acetic acid 32.44
    dichloromethane 13.84
    cyclohexanone 17.87
    propylene glycol 24.17
    isopropyl acetate 5.96
    DMAc 168.69
    2-ethoxyethanol 35.65
    isopentanol 9.1
    n-heptane 3.69
    ethyl formate 14.97
    1,2-dichloroethane 16.42
    n-hexanol 7.94
    2-methoxyethanol 79.77
    isobutyl acetate 1.73
    tetrachloromethane 2.39
    n-pentyl acetate 5.56
    transcutol 50.94
    n-heptanol 6.44
    ethylbenzene 1.75
    MIBK 5.12
    2-propoxyethanol 23.51
    tert-butanol 19.94
    MTBE 10.56
    2-butoxyethanol 14.43
    propionic acid 22.18
    o-xylene 4.06
    formic acid 72.84
    diethyl ether 13.78
    m-xylene 2.27
    p-xylene 1.76
    chlorobenzene 2.3
    dimethyl carbonate 13.98
    n-octane 1.78
    formamide 121.09
    cyclopentanone 22.55
    2-pentanone 11.81
    anisole 4.87
    cyclopentyl methyl ether 11.81
    gamma-butyrolactone 30.63
    1-methoxy-2-propanol 42.2
    pyridine 18.75
    3-pentanone 12.38
    furfural 32.19
    n-dodecane 1.27
    diethylene glycol 37.05
    diisopropyl ether 3.44
    tert-amyl alcohol 16.33
    acetylacetone 13.38
    n-hexadecane 1.34
    acetophenone 6.87
    methyl propionate 17.36
    isopentyl acetate 4.5
    trichloroethylene 13.15
    n-nonanol 6.78
    cyclohexanol 13.86
    benzyl alcohol 8.18
    2-ethylhexanol 4.84
    isooctanol 4.48
    dipropyl ether 7.94
    1,2-dichlorobenzene 2.78
    ethyl lactate 8.63
    propylene carbonate 11.12
    n-methylformamide 85.57
    2-pentanol 9.63
    n-pentane 3.05
    1-propoxy-2-propanol 16.79
    1-methoxy-2-propyl acetate 10.03
    2-(2-methoxypropoxy) propanol 16.73
    mesitylene 2.05
    ε-caprolactone 16.87
    p-cymene 2.94
    epichlorohydrin 26.93
    1,1,1-trichloroethane 3.35
    2-aminoethanol 44.75
    morpholine-4-carbaldehyde 86.35
    sulfolane 75.83
    2,2,4-trimethylpentane 1.12
    2-methyltetrahydrofuran 18.4
    n-hexyl acetate 6.43
    isooctane 0.66
    2-(2-butoxyethoxy)ethanol 20.5
    sec-butyl acetate 2.9
    tert-butyl acetate 5.49
    decalin 1.13
    glycerin 46.07
    diglyme 40.6
    acrylic acid 27.15
    isopropyl myristate 3.54
    n-butyric acid 14.61
    acetyl acetate 5.48
    di(2-ethylhexyl) phthalate 3.66
    ethyl propionate 5.95
    nitromethane 60.71
    1,2-diethoxyethane 12.1
    benzonitrile 5.7
    trioctyl phosphate 3.91
    1-bromopropane 7.35
    gamma-valerolactone 35.72
    n-decanol 5.44
    triethyl phosphate 5.03
    4-methyl-2-pentanol 4.37
    propionitrile 12.18
    vinylene carbonate 10.68
    1,1,2-trichlorotrifluoroethane 38.81
    DMS 7.79
    cumene 1.48
    2-octanol 4.66
    2-hexanone 5.6
    octyl acetate 4.83
    limonene 5.13
    1,2-dimethoxyethane 38.38
    ethyl orthosilicate 4.69
    tributyl phosphate 3.94
    diacetone alcohol 14.36
    N,N-dimethylaniline 7.36
    acrylonitrile 20.21
    aniline 8.54
    1,3-propanediol 34.93
    bromobenzene 1.64
    dibromomethane 9.48
    1,1,2,2-tetrachloroethane 14.92
    2-methyl-cyclohexyl acetate 4.09
    tetrabutyl urea 8.6
    diisobutyl methanol 4.36
    2-phenylethanol 6.62
    styrene 2.03
    dioctyl adipate 5.97
    dimethyl sulfate 35.19
    ethyl butyrate 6.43
    methyl lactate 23.58
    butyl lactate 7.31
    diethyl carbonate 4.58
    propanediol butyl ether 15.12
    triethyl orthoformate 6.09
    p-tert-butyltoluene 2.96
    methyl 4-tert-butylbenzoate 10.48
    morpholine 43.36
    tert-butylamine 11.82
    n-dodecanol 4.56
    dimethoxymethane 47.5
    ethylene carbonate 8.82
    cyrene 17.82
    2-ethoxyethyl acetate 8.28
    2-ethylhexyl acetate 3.61
    1,2,4-trichlorobenzene 3.87
    4-methylpyridine 11.87
    dibutyl ether 5.82
    2,6-dimethyl-4-heptanol 4.36
    DEF 38.65
    dimethyl isosorbide 20.94
    tetrachloroethylene 13.03
    eugenol 10.47
    triacetin 9.13
    span 80 12.1
    1,4-butanediol 17.0
    1,1-dichloroethane 5.81
    2-methyl-1-pentanol 5.47
    methyl formate 47.91
    2-methyl-1-butanol 9.34
    n-decane 1.89
    butyronitrile 8.84
    3,7-dimethyl-1-octanol 4.79
    1-chlorooctane 3.42
    1-chlorotetradecane 1.85
    n-nonane 1.94
    undecane 1.51
    tert-butylcyclohexane 0.7
    cyclooctane 2.09
    cyclopentanol 16.86
    tetrahydropyran 15.7
    tert-amyl methyl ether 10.69
    2,5,8-trioxanonane 33.37
    1-hexene 2.3
    2-isopropoxyethanol 16.67
    2,2,2-trifluoroethanol 23.18
    methyl butyrate 8.06

    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