Magnesium Chloride

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  • Identifiers

    CAS number
    7786-30-3

    Molecular formula
    Cl2Mg

    SMILES
    [Mg+2].[Cl-].[Cl-]

    Safety labels

    Corrosive
    Corrosive

    Irritant
    Irritant

  • Odor profile

  • Properties

    pKa est.
    -6.45 (strong acid)

    Molecular weight
    95.21 g/mol

    Melting point expt.

    • 712 °C (rapid heating)

    Boiling point

    • 1,412 °C
    • 1412 °C

    Flash point

    • -98.15 ˚C est.

    Solubility expt.

    • Very soluble in water, freely soluble in ethanol
    • 7.40 g/100 ml of alcohol @ 20 °C; 72.7 g/100 ml water @ 100 °C
    • In methanol, 15.5 g/100 g @ 0 °C, 20.4 g/100 g @ 60 °C; in ethanol, 3.61 g/100 g @ 0 °C, 15.89 g/100 g @ 60 °C
    • In water, 54.6 g/100 g @ 20 °C
    • Solubility in water, g/100ml at 20 °C: 54.3

  • Synonyms

    • MAGNESIUM CHLORIDE
    • 7786-30-3
    • Magnesium chloride anhydrous
    • Magnesium dichloride
    • MgCl2
    • Anhydrous magnesium chloride
    • DTXSID5034690
    • NSC-529832
    • 59XN63C8VM
    • CHEBI:6636
    • Chloride, Magnesium
    • Fibro Flex
    • Cramp-Z
    • GZE Magnesium Oil
    • RefChem:6461
    • DTXCID3014690
    • Bestmade Natural Products Mag Mur
    • 232-094-6
    • 02F3473H9O
    • Aerotex Accelerator MX
    • Bischofite
    • Bischofite (mgcl2.6h2o)
    • E-511
    • INS NO.511
    • INS-511
    • Magnesia Muriatica
    • Magnesium chloride (Mg2Cl4)
    • Magnesium chloride (MgCl2)
    • MultiBic component magnesium chloride hexahydrate
    • NSC529832
    • TMT 2
    • Cl2Mg
    • MAGNESIUM CHLORIDE, ANHYDROUS
    • magnesiumchloride
    • Magnesiumchlorid
    • magnesium(II)chloride
    • magnesium(II) chloride
    • magnesium (II) chloride
    • [MgCl2]
    • SCHEMBL683
    • 17638-61-8
    • 56491-84-0
    • MAGNESIUM CHLORIDE [MI]
    • CHEMBL2219642
    • HMS5087N11
    • MAGNESIUM CHLORIDE [WHO-DD]
    • AKOS015833135
    • DB09407
    • FM05982
    • Magnesium Chloride, Powder, < 200um
    • MAGNESIUM CHLORIDE ANHYDROUS [HSDB]
    • NS00080860
    • C07755
    • Q265414
    • SR-01000944482
    • SR-01000944482-1
    • Magnesium chloride solution 2M in water (19.2 - 20%wt)
    • Magnesium chloride, dry, 99.99% trace metals grade -10 Mesh beads
    • Reagecon Magnesium Chloride 0.01M according to United States Pharmacopoeia (USP)
    • Reagecon Magnesium Chloride 0.1M according to European Pharmacopoeia (EP) Chapter 4 (4.2.2)
    • 7786-30-3

  • Applications

    Magnesium chloride finds practical uses across several industries: as a road de-icer and dust-control brine for transportation infrastructure; as a strong desiccant used in chemical processing and storage to absorb moisture; as a coagulant in food processing, notably in tofu production; as a magnesium source for crops in agriculture and in fertilizer formulations; in cosmetics and personal care, it appears in bath salts and topical magnesium products; and in some industrial processes it serves as a Mg2+ source or part of brine systems used in manufacturing and surface treatments, depending on formulation and regulatory requirements.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 97.68
    methanol 96.35
    isopropanol 61.87
    water 0.92
    ethyl acetate 53.01
    n-propanol 67.03
    acetone 94.3
    n-butanol 61.98
    acetonitrile 63.42
    DMF 144.63
    toluene 29.42
    isobutanol 45.36
    1,4-dioxane 105.23
    methyl acetate 56.84
    THF 133.61
    2-butanone 69.93
    n-pentanol 46.97
    sec-butanol 54.17
    n-hexane 14.85
    ethylene glycol 35.67
    NMP 132.98
    cyclohexane 14.99
    DMSO 137.26
    n-butyl acetate 53.41
    n-octanol 38.72
    chloroform 82.43
    n-propyl acetate 39.35
    acetic acid 78.55
    dichloromethane 69.68
    cyclohexanone 90.64
    propylene glycol 33.33
    isopropyl acetate 31.2
    DMAc 79.79
    2-ethoxyethanol 54.84
    isopentanol 45.72
    n-heptane 14.25
    ethyl formate 34.46
    1,2-dichloroethane 53.31
    n-hexanol 64.65
    2-methoxyethanol 94.52
    isobutyl acetate 26.07
    tetrachloromethane 20.78
    n-pentyl acetate 34.76
    transcutol 174.92
    n-heptanol 36.39
    ethylbenzene 17.14
    MIBK 37.8
    2-propoxyethanol 80.83
    tert-butanol 64.56
    MTBE 50.46
    2-butoxyethanol 52.14
    propionic acid 62.68
    o-xylene 20.44
    formic acid 28.75
    diethyl ether 65.47
    m-xylene 21.76
    p-xylene 21.37
    chlorobenzene 37.12
    dimethyl carbonate 25.95
    n-octane 6.21
    formamide 39.98
    cyclopentanone 119.66
    2-pentanone 63.41
    anisole 38.14
    cyclopentyl methyl ether 68.96
    gamma-butyrolactone 110.24
    1-methoxy-2-propanol 74.57
    pyridine 70.62
    3-pentanone 45.39
    furfural 85.46
    n-dodecane 5.58
    diethylene glycol 67.19
    diisopropyl ether 22.74
    tert-amyl alcohol 54.1
    acetylacetone 56.83
    n-hexadecane 6.1
    acetophenone 35.63
    methyl propionate 46.52
    isopentyl acetate 42.87
    trichloroethylene 85.65
    n-nonanol 31.52
    cyclohexanol 51.14
    benzyl alcohol 30.98
    2-ethylhexanol 38.53
    isooctanol 27.62
    dipropyl ether 41.59
    1,2-dichlorobenzene 33.7
    ethyl lactate 21.39
    propylene carbonate 57.34
    n-methylformamide 63.19
    2-pentanol 45.99
    n-pentane 15.55
    1-propoxy-2-propanol 61.13
    1-methoxy-2-propyl acetate 45.46
    2-(2-methoxypropoxy) propanol 46.33
    mesitylene 15.78
    ε-caprolactone 72.18
    p-cymene 15.88
    epichlorohydrin 86.17
    1,1,1-trichloroethane 51.53
    2-aminoethanol 50.69
    morpholine-4-carbaldehyde 107.59
    sulfolane 121.17
    2,2,4-trimethylpentane 7.3
    2-methyltetrahydrofuran 97.63
    n-hexyl acetate 50.02
    isooctane 6.5
    2-(2-butoxyethoxy)ethanol 67.47
    sec-butyl acetate 25.54
    tert-butyl acetate 38.62
    decalin 8.52
    glycerin 44.98
    diglyme 103.37
    acrylic acid 57.84
    isopropyl myristate 22.17
    n-butyric acid 60.79
    acetyl acetate 33.22
    di(2-ethylhexyl) phthalate 19.98
    ethyl propionate 31.56
    nitromethane 96.55
    1,2-diethoxyethane 60.23
    benzonitrile 40.84
    trioctyl phosphate 17.58
    1-bromopropane 41.79
    gamma-valerolactone 108.26
    n-decanol 24.63
    triethyl phosphate 17.88
    4-methyl-2-pentanol 26.96
    propionitrile 46.75
    vinylene carbonate 49.87
    1,1,2-trichlorotrifluoroethane 62.27
    DMS 35.39
    cumene 13.42
    2-octanol 27.23
    2-hexanone 48.4
    octyl acetate 27.83
    limonene 25.79
    1,2-dimethoxyethane 73.61
    ethyl orthosilicate 18.16
    tributyl phosphate 20.1
    diacetone alcohol 52.55
    N,N-dimethylaniline 27.88
    acrylonitrile 55.76
    aniline 36.36
    1,3-propanediol 61.56
    bromobenzene 36.06
    dibromomethane 55.78
    1,1,2,2-tetrachloroethane 68.21
    2-methyl-cyclohexyl acetate 28.11
    tetrabutyl urea 28.05
    diisobutyl methanol 23.35
    2-phenylethanol 38.2
    styrene 22.32
    dioctyl adipate 26.96
    dimethyl sulfate 39.06
    ethyl butyrate 33.03
    methyl lactate 30.52
    butyl lactate 29.07
    diethyl carbonate 21.72
    propanediol butyl ether 51.99
    triethyl orthoformate 24.08
    p-tert-butyltoluene 16.41
    methyl 4-tert-butylbenzoate 36.32
    morpholine 110.86
    tert-butylamine 46.12
    n-dodecanol 19.98
    dimethoxymethane 69.37
    ethylene carbonate 40.29
    cyrene 40.22
    2-ethoxyethyl acetate 44.89
    2-ethylhexyl acetate 36.7
    1,2,4-trichlorobenzene 39.66
    4-methylpyridine 63.05
    dibutyl ether 37.1
    2,6-dimethyl-4-heptanol 23.35
    DEF 66.97
    dimethyl isosorbide 65.76
    tetrachloroethylene 49.43
    eugenol 39.74
    triacetin 41.24
    span 80 44.99
    1,4-butanediol 28.38
    1,1-dichloroethane 52.0
    2-methyl-1-pentanol 39.37
    methyl formate 45.21
    2-methyl-1-butanol 44.28
    n-decane 8.37
    butyronitrile 46.59
    3,7-dimethyl-1-octanol 32.87
    1-chlorooctane 25.32
    1-chlorotetradecane 11.59
    n-nonane 8.73
    undecane 6.63
    tert-butylcyclohexane 9.16
    cyclooctane 6.57
    cyclopentanol 62.08
    tetrahydropyran 92.92
    tert-amyl methyl ether 41.71
    2,5,8-trioxanonane 75.65
    1-hexene 35.84
    2-isopropoxyethanol 41.52
    2,2,2-trifluoroethanol 28.39
    methyl butyrate 41.95

    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