Iron chloride (FeCl3)

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  • Identifiers

    CAS number
    7705-08-0

    Molecular formula
    Cl3Fe

    SMILES
    Cl[Fe](Cl)Cl

    Safety labels

    Corrosive
    Corrosive

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Odorless 51.44%
    Fishy 42.22%
    Sweet 28.49%
    Ripe 21.27%
    Cheesy 19.27%
    Oily 16.94%
    Animal 16.16%
    Floral 15.7%
    Fresh 15.06%
    Musty 15.0%

     

    Flavor
    Odorless 38.47%
    Sulfurous 23.94%
    Sulfury 23.85%
    Fishy 23.22%
    Meaty 21.86%
    Glue 18.82%
    Bloody 18.67%
    Rotten 18.56%
    Mousy 18.45%
    Roasted 18.35%

     

  • Properties

    pKa est.
    -24.52 (strong acid)

    Molecular weight
    162.2 g/mol

    Melting point expt.

    • 583 °F (NTP, 1992)
    • [ACGIH] approximately 300 °C
    • 304 °C
    • Brownish-yellow or orange monoclinic crystals; usually slight odor of HCl; pH of 0.1 molar aqueous solution: 2.0; mp: about 37 °C. /Hexahydrate/
    • 37 °C

    Boiling point

    • 599 °F at 760 mmHg (Decomposes) (NTP, 1992)
    • About 316 °C

    Flash point

    • 16.05 ˚C est.

    Solubility expt.

    • 5 to 10 mg/mL at 68 °F (NTP, 1992)
    • In cold water: 74.4 g/100 cc at 0 °C; in hot water: 535.7 g/100 cc at 100 °C; in acetone: 63 g/100 cc at 18 °C; very sol in alc, ether, methanol.
    • Slightly sol in carbon disulfide, practically insol in ethyl acetate.
    • Sol in glycerol
    • 430 g/kg solution at 0 °C; 480 g/kg solution at 20 °C; 743 g/kg solution at 40 °C
    • Readily soluble in liquids having donor properties, such as alcohols, ketones, ethers, nitriles, amines, and liquid sulfur dioxide, but only sparingly soluble in nonpolar solvents such as benzene and hexane.
    • Solubility in water, g/100ml at 20 °C: 92 (reaction)

  • Synonyms

    • FERRIC CHLORIDE
    • 7705-08-0
    • Iron trichloride
    • Flores martis
    • Iron perchloride
    • Chlorure perrique
    • Perchlorure de fer
    • Iron chloride (FeCl3)
    • Natural molysite
    • FERRIC CHLORIDE, ANHYDROUS
    • FeCl3
    • Chlorure ferrique
    • Iron sesquichloride (DOT)
    • Iron sesquichloride
    • U38V3ZVV3V
    • CHEBI:30808
    • NSC-51150
    • NSC-135798
    • Ferric trichloride
    • RefChem:6640
    • 231-729-4
    • DTXCID60622
    • DTXSID8020622
    • Ferric chloride, hexahydrate
    • Iron (III), chloride, hexahydrate
    • Iron chloride
    • Iron(3+) chloride, hexahydrate
    • trichloroiron
    • Iron (III) chloride
    • Iron chloride (Fe2Cl3)
    • Iron(III) chloride, anhydrous
    • Iron chloride, solid
    • Ferric chloride, solid
    • WLN: FE G3
    • Iron(III) chloride anhydrous
    • Caswell No. 459
    • Chlorure ferrique [French]
    • Chlorure perrique [French]
    • Perchlorure de fer [French]
    • CCRIS 2299
    • HSDB 449
    • Iron(III)chloride
    • Fe(III) chloride
    • EINECS 231-729-4
    • iron (III)chloride
    • iron(3+) chloride
    • NSC 51150
    • UN1773
    • UN2582
    • iron (III) cloride
    • EPA Pesticide Chemical Code 034901
    • NSC 135798
    • iron-(III) chloride
    • iron-(III)-chloride
    • Iron chloride anhydrous
    • iron (III) trichloride
    • AI3-51902
    • [FeCl3]
    • Iron(III) chloride, CP
    • UNII-U38V3ZVV3V
    • SCHEMBL15401
    • TDA Reagent, for microbiology
    • orb2941054
    • NSC51150
    • Iron(III) chloride, p.a., 98%
    • Fe/ppm Pd for nitro group reductions
    • NSC135798
    • AKOS015902743
    • DB15536
    • Iron(III) chloride,reagent grade, 97%
    • NCGC00249131-01
    • BP-31268
    • Iron(III) chloride, reagent grade, 97%
    • Iron(III) chloride, technical grade, 58%
    • Iron(III) chloride, anhydrous for synthesis
    • NS00093572
    • EN300-19478
    • Iron(III) chloride, LR, anhydrous, >=97%
    • EC 231-729-4
    • USP Solution Ferric Chloride TS Conforms to USP
    • Iron (III) chloride, Trace metals grade, 99.9%
    • Q399771
    • Ferric chloride, anhydrous [UN1773] [Corrosive]
    • F0001-1983
    • Iron(III) chloride, sublimed grade, >/=99.9% trace metals basis
    • Iron(III) chloride, sublimed grade, >=99.9% trace metals basis
    • Iron(III) chloride, anhydrous, powder, >=99.99% trace metals basis
    • Iron(III) chloride on silica gel, powder, extent of labeling: 5 wt. % loading
    • 7705-08-0

  • Applications

    Iron chloride (FeCl3) is widely used as a Lewis acid catalyst and oxidant in industry. In water and wastewater treatment, it acts as a coagulant/flocculant to remove suspended solids and color. In electronics manufacturing, ferric chloride solutions are used for copper etching in printed circuit boards and microelectronics processing. In textiles and printing, it serves as a mordant and catalyst for dyeing and pigment printing, helping fix dyes on cellulose and other fibers. In organic synthesis, FeCl3 functions as a Lewis-acid catalyst for electrophilic aromatic substitution and related reactions. In coatings, inks, and paper, ferric chloride can be used in surface-treatment steps or as a processing additive. Use is application-specific and subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 662.26
    methanol 759.24
    isopropanol 611.91
    water 58.96
    ethyl acetate 428.81
    n-propanol 516.43
    acetone 802.81
    n-butanol 540.84
    acetonitrile 362.39
    DMF 1634.98
    toluene 351.38
    isobutanol 405.34
    1,4-dioxane 807.95
    methyl acetate 384.76
    THF 1342.77
    2-butanone 479.41
    n-pentanol 355.98
    sec-butanol 509.63
    n-hexane 217.11
    ethylene glycol 349.92
    NMP 1062.39
    cyclohexane 324.54
    DMSO 1400.48
    n-butyl acetate 291.22
    n-octanol 324.19
    chloroform 1041.17
    n-propyl acetate 284.81
    acetic acid 558.99
    dichloromethane 922.19
    cyclohexanone 629.63
    propylene glycol 311.96
    isopropyl acetate 345.32
    DMAc 1078.15
    2-ethoxyethanol 553.02
    isopentanol 412.03
    n-heptane 229.98
    ethyl formate 343.06
    1,2-dichloroethane 651.49
    n-hexanol 377.94
    2-methoxyethanol 1050.77
    isobutyl acetate 199.4
    tetrachloromethane 420.64
    n-pentyl acetate 304.42
    transcutol 728.25
    n-heptanol 330.53
    ethylbenzene 212.73
    MIBK 346.96
    2-propoxyethanol 612.15
    tert-butanol 743.85
    MTBE 563.11
    2-butoxyethanol 472.05
    propionic acid 331.43
    o-xylene 298.5
    formic acid 350.89
    diethyl ether 673.7
    m-xylene 305.72
    p-xylene 267.36
    chlorobenzene 344.95
    dimethyl carbonate 326.19
    n-octane 124.16
    formamide 505.31
    cyclopentanone 749.31
    2-pentanone 527.68
    anisole 376.24
    cyclopentyl methyl ether 728.68
    gamma-butyrolactone 682.93
    1-methoxy-2-propanol 849.11
    pyridine 557.56
    3-pentanone 416.88
    furfural 732.15
    n-dodecane 87.25
    diethylene glycol 612.87
    diisopropyl ether 306.82
    tert-amyl alcohol 572.06
    acetylacetone 566.23
    n-hexadecane 95.13
    acetophenone 330.66
    methyl propionate 423.51
    isopentyl acetate 257.1
    trichloroethylene 871.51
    n-nonanol 283.65
    cyclohexanol 556.08
    benzyl alcohol 314.85
    2-ethylhexanol 268.89
    isooctanol 266.54
    dipropyl ether 438.93
    1,2-dichlorobenzene 346.5
    ethyl lactate 203.05
    propylene carbonate 405.36
    n-methylformamide 613.8
    2-pentanol 477.91
    n-pentane 310.39
    1-propoxy-2-propanol 498.67
    1-methoxy-2-propyl acetate 339.37
    2-(2-methoxypropoxy) propanol 323.88
    mesitylene 252.49
    ε-caprolactone 471.97
    p-cymene 192.07
    epichlorohydrin 746.36
    1,1,1-trichloroethane 658.9
    2-aminoethanol 411.82
    morpholine-4-carbaldehyde 958.51
    sulfolane 936.53
    2,2,4-trimethylpentane 138.52
    2-methyltetrahydrofuran 776.37
    n-hexyl acetate 341.21
    isooctane 122.0
    2-(2-butoxyethoxy)ethanol 424.39
    sec-butyl acetate 217.8
    tert-butyl acetate 403.99
    decalin 131.45
    glycerin 460.86
    diglyme 732.63
    acrylic acid 326.48
    isopropyl myristate 196.32
    n-butyric acid 451.36
    acetyl acetate 310.88
    di(2-ethylhexyl) phthalate 166.46
    ethyl propionate 289.13
    nitromethane 676.01
    1,2-diethoxyethane 394.62
    benzonitrile 294.02
    trioctyl phosphate 154.11
    1-bromopropane 502.65
    gamma-valerolactone 794.64
    n-decanol 225.35
    triethyl phosphate 187.64
    4-methyl-2-pentanol 288.7
    propionitrile 315.05
    vinylene carbonate 365.38
    1,1,2-trichlorotrifluoroethane 662.63
    DMS 241.98
    cumene 171.99
    2-octanol 289.69
    2-hexanone 321.06
    octyl acetate 233.82
    limonene 280.14
    1,2-dimethoxyethane 817.91
    ethyl orthosilicate 197.51
    tributyl phosphate 151.72
    diacetone alcohol 479.83
    N,N-dimethylaniline 378.06
    acrylonitrile 362.41
    aniline 396.47
    1,3-propanediol 538.95
    bromobenzene 366.07
    dibromomethane 734.75
    1,1,2,2-tetrachloroethane 830.12
    2-methyl-cyclohexyl acetate 234.2
    tetrabutyl urea 225.91
    diisobutyl methanol 227.64
    2-phenylethanol 298.28
    styrene 253.26
    dioctyl adipate 239.3
    dimethyl sulfate 511.4
    ethyl butyrate 277.41
    methyl lactate 335.55
    butyl lactate 260.59
    diethyl carbonate 199.55
    propanediol butyl ether 390.52
    triethyl orthoformate 253.51
    p-tert-butyltoluene 222.62
    methyl 4-tert-butylbenzoate 389.56
    morpholine 891.32
    tert-butylamine 566.25
    n-dodecanol 190.15
    dimethoxymethane 1123.95
    ethylene carbonate 323.12
    cyrene 342.98
    2-ethoxyethyl acetate 313.8
    2-ethylhexyl acetate 229.95
    1,2,4-trichlorobenzene 386.82
    4-methylpyridine 569.33
    dibutyl ether 297.08
    2,6-dimethyl-4-heptanol 227.64
    DEF 665.67
    dimethyl isosorbide 513.48
    tetrachloroethylene 677.2
    eugenol 364.38
    triacetin 299.18
    span 80 355.44
    1,4-butanediol 255.89
    1,1-dichloroethane 619.18
    2-methyl-1-pentanol 280.68
    methyl formate 506.95
    2-methyl-1-butanol 396.29
    n-decane 134.17
    butyronitrile 348.41
    3,7-dimethyl-1-octanol 250.33
    1-chlorooctane 253.17
    1-chlorotetradecane 134.43
    n-nonane 139.87
    undecane 104.35
    tert-butylcyclohexane 137.55
    cyclooctane 168.44
    cyclopentanol 617.6
    tetrahydropyran 734.41
    tert-amyl methyl ether 502.04
    2,5,8-trioxanonane 537.06
    1-hexene 325.23
    2-isopropoxyethanol 401.46
    2,2,2-trifluoroethanol 311.59
    methyl butyrate 334.78

    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