Iron

Overview IFRA Request a quote

  • Identifiers

    CAS number
    7439-89-6

    Molecular formula
    Fe

    SMILES
    [Fe]

    Safety labels

    Flammable
    Flammable

  • Odor profile

  • Properties

    pKa est.
    -38.99 (strong acid)

    Molecular weight
    55.84 g/mol

    Melting point expt.

    • 1538 °C
    • 1,538 °C
    • Melting point: ...cast 1000-1300 °C; wrought 1500 °C; steel 1300 °C

    Boiling point

    • 2,861 °C
    • 288 °F

    Flash point

    • -34.99 ˚C est.

    Solubility expt.

    • INSOL IN HOT & COLD WATER, ALKALI, ALC, ETHER; SOL IN ACIDS
    • Soluble in dilute acid.

  • Synonyms

    • IRON
    • 7439-89-6
    • Iron, elemental
    • ferrous iron
    • Iron powder
    • Remko
    • Armco iron
    • Ferrovac E
    • Hoeganaes EH
    • 3ZhP
    • Ancor B
    • Atomiron 5M
    • PZhO
    • Atomiron 44MR
    • hierro
    • Atomiron AFP 5
    • Atomiron AFP 25
    • Atomel 28
    • Atomel 95
    • HQ (metal)
    • iron metal
    • LOHA
    • FT 3 (element)
    • HF 2 (element)
    • HL (iron)
    • HS (iron)
    • Atomel 500M
    • FE
    • PZh2M
    • PZh3M
    • PZh4M
    • Ferrum metallicum
    • PZh3
    • Hoeganaes ATW 230
    • Diseases, iron overload
    • F 60 (metal)
    • PZh1M1
    • PZh2M1
    • PZh2M2
    • Atomel 300M200
    • PZh-2
    • PZh-1M3
    • Eisen
    • Blood stop
    • SUY-B 2
    • DSP 128B
    • DSP 135C
    • Copy Powder CS 105-175
    • Ancor en 80/150
    • ATW 230
    • ATW 432
    • Diseases (animal), iron overload
    • DSP 135
    • DSP 138
    • EFV 250
    • DSP 1000
    • EF 250
    • NC 100
    • EF 1000
    • HS 4849
    • EFV 200/300
    • EFV 250/400
    • E1UOL152H7
    • A 227
    • 26Fe
    • SILVERDREAM POLARIS 60IL
    • CHEBI:18248
    • Ferretts
    • Iron 56
    • NovaFerrum
    • Real Summer
    • Wee Care
    • Ferrum 5
    • Ferrum 6
    • Ferrum sidereum 6
    • NovaFerrum 50
    • Polysaccharide-Iron
    • Ferrum phos. 6X
    • Biliousness Diarrhea
    • Ferrum Sidereum 8X
    • Ferrum 12X
    • Ferrum 21X
    • Ferrum 30X
    • Ferrum sidereum 20
    • Ferrum Metallicum 6X
    • Ferrum 0.4
    • Iferex 150
    • FERRUM MET
    • RefChem:2632
    • ANEM-X
    • Ferrum 8 Special Order
    • lambda2-iron(2+) ion
    • NovaFerrum Pediatric Drops
    • Polysaccharide-Iron Complex
    • ANEM-X 100
    • IRON 100
    • IRON 200
    • Ferrum sidereum 21 Special Order
    • Ferrum sidereum 30 Special Order
    • Bestmade Natural Products Ferr Met
    • 231-096-4
    • 617-112-6
    • 628-861-3
    • 640-395-2
    • 917-706-8
    • Carbonyl iron
    • Iron-56
    • Ferrum
    • STAINLESS STEEL
    • 12597-68-1
    • iron atom
    • Iron54
    • iron(0)
    • Stainless steel, powder, -150 mesh
    • Iron; Ferrum
    • Reduced iron powder
    • Iron, CP
    • MFCD00010999
    • Iron, dialyzed
    • Iron (Fe)
    • Ferronyl
    • GS 6
    • Iron, ACS reagent, granular, low in magnesium and manganese
    • Iron monocation
    • Iron, ion (Fe1+)
    • Reduced Iron
    • Electrolytic Iron
    • 7439-89-6

  • Applications

    Iron (CAS 7439-89-6) is predominantly used as the base material for steel and iron alloys, enabling products for construction, automotive, and machinery through casting, forging, and rolling. It also serves as a feedstock for iron-based catalysts in ammonia synthesis and selective hydrogenation processes. Iron oxide pigments produced from iron are widely used in paints, coatings, and printing inks. Soft magnetic materials and transformer cores rely on iron alloys for electrical components. As a micronutrient in agriculture, iron is supplied to crops via chelated forms or salts to address deficiency. In manufacturing and cleaning, iron can be used as a reducing agent in chemical synthesis and metal finishing.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 161.18
    methanol 190.09
    isopropanol 111.23
    water 4.3
    ethyl acetate 99.83
    n-propanol 113.59
    acetone 195.69
    n-butanol 102.91
    acetonitrile 123.26
    DMF 369.41
    toluene 57.55
    isobutanol 77.92
    1,4-dioxane 231.8
    methyl acetate 116.87
    THF 248.24
    2-butanone 128.11
    n-pentanol 79.08
    sec-butanol 94.48
    n-hexane 22.0
    ethylene glycol 79.48
    NMP 305.69
    cyclohexane 30.46
    DMSO 303.03
    n-butyl acetate 86.0
    n-octanol 68.87
    chloroform 150.98
    n-propyl acetate 72.53
    acetic acid 166.44
    dichloromethane 131.83
    cyclohexanone 166.88
    propylene glycol 62.7
    isopropyl acetate 63.2
    DMAc 228.36
    2-ethoxyethanol 122.36
    isopentanol 81.73
    n-heptane 23.82
    ethyl formate 73.65
    1,2-dichloroethane 101.16
    n-hexanol 95.82
    2-methoxyethanol 207.13
    isobutyl acetate 48.97
    tetrachloromethane 43.21
    n-pentyl acetate 66.63
    transcutol 367.7
    n-heptanol 61.63
    ethylbenzene 34.22
    MIBK 74.4
    2-propoxyethanol 153.22
    tert-butanol 123.54
    MTBE 102.56
    2-butoxyethanol 102.9
    propionic acid 108.58
    o-xylene 48.75
    formic acid 72.74
    diethyl ether 117.0
    m-xylene 45.78
    p-xylene 44.02
    chlorobenzene 72.91
    dimethyl carbonate 61.14
    n-octane 12.34
    formamide 101.71
    cyclopentanone 215.54
    2-pentanone 114.73
    anisole 82.6
    cyclopentyl methyl ether 126.66
    gamma-butyrolactone 211.2
    1-methoxy-2-propanol 152.1
    pyridine 132.74
    3-pentanone 90.01
    furfural 185.89
    n-dodecane 11.82
    diethylene glycol 152.12
    diisopropyl ether 45.51
    tert-amyl alcohol 102.93
    acetylacetone 133.1
    n-hexadecane 12.94
    acetophenone 78.87
    methyl propionate 91.05
    isopentyl acetate 74.19
    trichloroethylene 169.18
    n-nonanol 58.73
    cyclohexanol 94.21
    benzyl alcohol 66.62
    2-ethylhexanol 63.19
    isooctanol 48.47
    dipropyl ether 70.66
    1,2-dichlorobenzene 72.1
    ethyl lactate 46.77
    propylene carbonate 112.56
    n-methylformamide 137.51
    2-pentanol 79.34
    n-pentane 27.8
    1-propoxy-2-propanol 111.45
    1-methoxy-2-propyl acetate 88.52
    2-(2-methoxypropoxy) propanol 104.07
    mesitylene 34.63
    ε-caprolactone 136.01
    p-cymene 32.59
    epichlorohydrin 162.2
    1,1,1-trichloroethane 99.39
    2-aminoethanol 94.49
    morpholine-4-carbaldehyde 265.08
    sulfolane 238.49
    2,2,4-trimethylpentane 15.43
    2-methyltetrahydrofuran 174.2
    n-hexyl acetate 90.03
    isooctane 12.63
    2-(2-butoxyethoxy)ethanol 142.83
    sec-butyl acetate 50.55
    tert-butyl acetate 78.38
    decalin 17.56
    glycerin 100.42
    diglyme 237.23
    acrylic acid 111.03
    isopropyl myristate 45.17
    n-butyric acid 105.26
    acetyl acetate 75.31
    di(2-ethylhexyl) phthalate 41.85
    ethyl propionate 61.77
    nitromethane 219.05
    1,2-diethoxyethane 120.09
    benzonitrile 80.5
    trioctyl phosphate 35.58
    1-bromopropane 69.96
    gamma-valerolactone 231.34
    n-decanol 47.02
    triethyl phosphate 39.83
    4-methyl-2-pentanol 50.12
    propionitrile 84.35
    vinylene carbonate 101.06
    1,1,2-trichlorotrifluoroethane 136.28
    DMS 76.04
    cumene 27.71
    2-octanol 47.79
    2-hexanone 82.11
    octyl acetate 55.67
    limonene 51.3
    1,2-dimethoxyethane 181.29
    ethyl orthosilicate 39.55
    tributyl phosphate 41.28
    diacetone alcohol 105.86
    N,N-dimethylaniline 65.16
    acrylonitrile 108.39
    aniline 71.29
    1,3-propanediol 118.16
    bromobenzene 71.42
    dibromomethane 97.7
    1,1,2,2-tetrachloroethane 128.84
    2-methyl-cyclohexyl acetate 54.88
    tetrabutyl urea 59.65
    diisobutyl methanol 43.25
    2-phenylethanol 74.96
    styrene 43.84
    dioctyl adipate 58.09
    dimethyl sulfate 104.05
    ethyl butyrate 61.05
    methyl lactate 69.37
    butyl lactate 56.72
    diethyl carbonate 45.66
    propanediol butyl ether 103.53
    triethyl orthoformate 50.1
    p-tert-butyltoluene 33.61
    methyl 4-tert-butylbenzoate 79.27
    morpholine 217.3
    tert-butylamine 83.87
    n-dodecanol 39.28
    dimethoxymethane 165.88
    ethylene carbonate 80.62
    cyrene 93.42
    2-ethoxyethyl acetate 94.79
    2-ethylhexyl acetate 63.68
    1,2,4-trichlorobenzene 85.15
    4-methylpyridine 123.57
    dibutyl ether 69.62
    2,6-dimethyl-4-heptanol 43.25
    DEF 146.32
    dimethyl isosorbide 143.46
    tetrachloroethylene 98.2
    eugenol 84.88
    triacetin 90.82
    span 80 95.51
    1,4-butanediol 59.15
    1,1-dichloroethane 97.31
    2-methyl-1-pentanol 66.58
    methyl formate 106.91
    2-methyl-1-butanol 78.08
    n-decane 16.45
    butyronitrile 78.74
    3,7-dimethyl-1-octanol 57.71
    1-chlorooctane 46.48
    1-chlorotetradecane 23.78
    n-nonane 16.86
    undecane 13.49
    tert-butylcyclohexane 17.68
    cyclooctane 13.47
    cyclopentanol 112.91
    tetrahydropyran 164.67
    tert-amyl methyl ether 85.18
    2,5,8-trioxanonane 173.77
    1-hexene 50.49
    2-isopropoxyethanol 88.92
    2,2,2-trifluoroethanol 65.74
    methyl butyrate 80.25

    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