Magnesium

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  • Identifiers

    CAS number
    7439-95-4

    Molecular formula
    Mg

    SMILES
    [Mg]

    Safety labels

    Flammable
    Flammable

  • Odor profile

    Odor impact est.
    Low

  • Properties

    pKa est.
    -19.28 (strong acid)

    Molecular weight
    24.305 g/mol

    Melting point expt.

    • 1202 °F (USCG, 1999)
    • 651 °C
    • 649C (1200F)
    • 649 °C

    Boiling point

    • 2012 °F at 760 mmHg (USCG, 1999)
    • 1100 °C
    • 1100C (2012F)

    Flash point

    • -105.36 ˚C est.
    • 500 °C

    Solubility expt.

    • insoluble in cold water
    • INSOL IN COLD WATER, CHROMIUM TRIOXIDES; SOLUBLE IN MINERAL ACIDS
    • Insoluble but reactive in water, liberating hydrogen gas
    • Solubility in water: reaction
    • Solubility in water: reaction

  • Synonyms

    • MAGNESIUM
    • 7439-95-4
    • Magnesium sheet
    • Magnesium powdered
    • Magnesium metallicum
    • Magnesium powder
    • Rieke's active magnesium
    • MG
    • DTXSID0049658
    • I38ZP9992A
    • CHEBI:25107
    • Minaral mi tea
    • Bye Zero
    • Dietary Magnesium
    • RefChem:5969
    • Nmc Magma Mineral Pack
    • Giftpeak Magnesium Sleep Cream
    • DTXCID70876310
    • MAGNESIUM POWDER (pyrophoric)
    • 231-104-6
    • COCONUT OIL; DIMECROTATE MAGNESIUM; NIACINAMIDE; SAFFLOWER OIL; TARAXACUM OFFICINALE LEAF
    • magnesium(2+) ion
    • magnesio
    • Magnesium turnings
    • magnesium atom
    • Magnesium, turnings
    • Magnesio [Italian]
    • Magnesium metal
    • Mg Solution in 2% nictric acid
    • HSDB 654
    • EINECS 231-104-6
    • UN1418
    • UN1869
    • UN2950
    • Magnesium - Mg @ 1000 microg/g in Hydrocarbon Oil
    • Magnesium - Mg @ 5000 microg/g in Hydrocarbon Oil
    • Magnesium Standard: Mg+2 @ 1000 microg/mL in H2O
    • 12Mg
    • Magnesium Standard: Mg @ 1000 microg/mL in 5% HNO3
    • Magnesium Standard: Mg @ 10000 microg/mL in 5% HNO3
    • Magnesium AA Standard: Mg @ 1000 microg/mL in 5% HNO3
    • Magnesium rod
    • UNII-I38ZP9992A
    • Atomic Magnesium
    • Element-Mg
    • Element:Mg
    • Magnesium, foil, thickness 0.0125 mm, size 25 x 25 mm, purity 99.9%
    • Magnesium, foil, thickness 0.0125 mm, size 50 x 50 mm, purity 99.9%
    • Magnesium, foil, thickness 0.015 mm, size 100 x 100 mm, purity 99.9%
    • Magnesium, foil, thickness 0.015 mm, size 25 x 25 mm, purity 99.9%
    • Magnesium, foil, thickness 0.015 mm, size 50 x 50 mm, purity 99.9%
    • Magnesium, foil, thickness 0.02 mm, size 100 x 100 mm, purity 99.9%
    • Magnesium, foil, thickness 0.02 mm, size 25 x 25 mm, purity 99.9%
    • Magnesium, foil, thickness 0.02 mm, size 50 x 50 mm, purity 99.9%
    • Magnesium, foil, thickness 0.025 mm, size 100 x 100 mm, purity 99.9%
    • Magnesium, foil, thickness 0.025 mm, size 50 x 50 mm, purity 99.9%
    • Magnesium, foil, thickness 1.0 mm, size 100 x 100 mm, purity 99.9%
    • Magnesium, foil, thickness 1.0 mm, size 25 x 25 mm, purity 99.9%
    • Magnesium, foil, thickness 1.0 mm, size 50 x 50 mm, purity 99.9%
    • Sulfur-Free Magnesium Standard: Mg @ 5000 microg/g in Hydrocarbon Oil
    • Element Magnesium
    • Element:Magnesium
    • magnesium(0)
    • Mg (element)
    • Magnesium (atomic)
    • Magnesium (0)
    • Magnesium (element)
    • Magnesium, elemental
    • Mg Standard Solution
    • Magnesium (Turnings)
    • Magnesium, 99.5%
    • MAGNESIUM ELEMENT
    • MAGNESIUM [MI]
    • MAGNESIUM [HSDB]
    • MAGNESIUM [VANDF]
    • Magnesium powder 50 mesh
    • EC 231-104-6
    • Magnesium, >=99.8%
    • MAGNESIUM [WHO-DD]
    • Magnesium powder 325 mesh
    • Magnesium turnings, -4 mesh
    • Magnesium, powder, >=99%
    • Magnesium, plate, 99.95%
    • Magnesium powder, -325 mesh
    • Magnesium, puriss., 98.0%
    • Magnesium, puriss., 99.5%
    • Magnesium turnings for Grignards
    • CHEMBL1201230
    • SCHEMBL29350814
    • HSDB 7065
    • Magnesium granules, -12+50 mesh
    • MAGNESIUM METALLICUM [HPUS]
    • Magnesium powder, -20+100 mesh
    • Magnesium powder,-100+200 mesh
    • Residuals in pure zinc, O50x20mm
    • Magnesium, granular, 20-230 mesh
    • MFCD00011101
    • UN2010
    • AKOS015902697
    • AKOS016017174
    • AKOS028110047
    • Magnesium, grit, >=99.0% (KT)
    • Mg Solution in 5% Hydrochloride*H2O
    • DB14513
    • Magnesium, LR, turnings, >=99.5%
    • Magnesium hydride, hydrogen-storage grade
    • Magnesium, ribbon, >=99.5% Mg basis
    • Magnesium, SAJ first grade, >=98.0%
    • Magnesium, SAJ first grade, >=99.0%
    • BP-30179
    • BP-31186
    • Magnesium, turnings, reagent grade, 98%
    • Q660
    • Magnesium standard solution (100 ppm Mg)
    • Rieke Magnesium 2.5g in 100 ml of THF
    • M3358
    • Magnesium, ingot, >=99% trace metals basis
    • Magnesium, ribbon, =99% trace metals basis
    • NS00076161
    • AA standard MAGNESIUM 1M HNO3 1000 ppm
    • AA standard MAGNESIUM 1M HNO3 10000 ppm
    • Magnesium foil, 1.0mm (0.04in) thick, hard
    • Magnesium foil, 0.25mm (0.01in) thick, hard
    • Magnesium, 20-230 mesh, reagent grade, 98%
    • Magnesium - Mg @ 1000 microg/mL in 5% HNO3
    • Magnesium foil, 0.05mm (0.002in) thick, hard
    • 2.5 grams of Rieke Magnesium in 100 mL of THF
    • 7439-95-4

  • Applications

    Magnesium (CAS 7439-95-4) is widely used as a lightweight structural alloying element in automotive, aerospace, and electronics housings, helping reduce weight while maintaining strength and stiffness; it also serves as a strong reducing agent and a key precursor for Grignard reagents in industrial organic synthesis; in metallurgy it is used to deoxidize and desulfurize steel and nonferrous alloys and as an alloying additive to improve machinability and mechanical properties; magnesium oxide (MgO) derived from Mg serves as a refractory material for ceramics and kiln linings; and magnesium metal is employed in pyrotechnics and specialty light-emitting applications for bright white illumination.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 91.23
    methanol 100.92
    isopropanol 57.17
    water 1.37
    ethyl acetate 51.59
    n-propanol 62.67
    acetone 95.07
    n-butanol 56.43
    acetonitrile 63.18
    DMF 146.71
    toluene 27.75
    isobutanol 41.68
    1,4-dioxane 101.4
    methyl acetate 56.13
    THF 120.96
    2-butanone 65.18
    n-pentanol 40.79
    sec-butanol 48.13
    n-hexane 11.71
    ethylene glycol 39.05
    NMP 129.24
    cyclohexane 13.72
    DMSO 132.67
    n-butyl acetate 48.71
    n-octanol 33.66
    chloroform 81.54
    n-propyl acetate 35.48
    acetic acid 88.65
    dichloromethane 66.31
    cyclohexanone 85.1
    propylene glycol 35.15
    isopropyl acetate 30.16
    DMAc 83.42
    2-ethoxyethanol 51.75
    isopentanol 41.25
    n-heptane 12.5
    ethyl formate 35.68
    1,2-dichloroethane 48.13
    n-hexanol 56.4
    2-methoxyethanol 94.92
    isobutyl acetate 23.53
    tetrachloromethane 21.54
    n-pentyl acetate 31.7
    transcutol 160.86
    n-heptanol 32.12
    ethylbenzene 14.64
    MIBK 33.9
    2-propoxyethanol 75.54
    tert-butanol 58.75
    MTBE 45.46
    2-butoxyethanol 48.82
    propionic acid 63.01
    o-xylene 19.32
    formic acid 35.22
    diethyl ether 58.39
    m-xylene 20.01
    p-xylene 18.94
    chlorobenzene 36.01
    dimethyl carbonate 27.5
    n-octane 5.44
    formamide 44.68
    cyclopentanone 113.53
    2-pentanone 58.0
    anisole 34.88
    cyclopentyl methyl ether 60.86
    gamma-butyrolactone 108.24
    1-methoxy-2-propanol 70.53
    pyridine 68.58
    3-pentanone 42.28
    furfural 90.18
    n-dodecane 5.0
    diethylene glycol 69.1
    diisopropyl ether 20.08
    tert-amyl alcohol 48.34
    acetylacetone 57.27
    n-hexadecane 5.43
    acetophenone 33.04
    methyl propionate 45.3
    isopentyl acetate 38.94
    trichloroethylene 81.92
    n-nonanol 27.88
    cyclohexanol 46.6
    benzyl alcohol 28.97
    2-ethylhexanol 33.45
    isooctanol 24.09
    dipropyl ether 36.28
    1,2-dichlorobenzene 32.99
    ethyl lactate 20.91
    propylene carbonate 59.36
    n-methylformamide 66.26
    2-pentanol 39.21
    n-pentane 13.3
    1-propoxy-2-propanol 55.78
    1-methoxy-2-propyl acetate 43.33
    2-(2-methoxypropoxy) propanol 43.29
    mesitylene 14.27
    ε-caprolactone 67.14
    p-cymene 14.54
    epichlorohydrin 78.46
    1,1,1-trichloroethane 49.28
    2-aminoethanol 51.4
    morpholine-4-carbaldehyde 109.13
    sulfolane 117.77
    2,2,4-trimethylpentane 6.59
    2-methyltetrahydrofuran 84.87
    n-hexyl acetate 43.53
    isooctane 5.61
    2-(2-butoxyethoxy)ethanol 62.5
    sec-butyl acetate 22.9
    tert-butyl acetate 35.64
    decalin 7.41
    glycerin 49.16
    diglyme 96.08
    acrylic acid 61.85
    isopropyl myristate 19.96
    n-butyric acid 61.44
    acetyl acetate 35.56
    di(2-ethylhexyl) phthalate 19.14
    ethyl propionate 29.58
    nitromethane 105.99
    1,2-diethoxyethane 54.32
    benzonitrile 39.85
    trioctyl phosphate 16.3
    1-bromopropane 36.26
    gamma-valerolactone 107.46
    n-decanol 21.72
    triethyl phosphate 17.36
    4-methyl-2-pentanol 23.3
    propionitrile 46.01
    vinylene carbonate 53.29
    1,1,2-trichlorotrifluoroethane 62.64
    DMS 33.59
    cumene 11.8
    2-octanol 23.52
    2-hexanone 42.06
    octyl acetate 25.15
    limonene 23.72
    1,2-dimethoxyethane 71.1
    ethyl orthosilicate 17.29
    tributyl phosphate 18.68
    diacetone alcohol 47.66
    N,N-dimethylaniline 25.33
    acrylonitrile 56.4
    aniline 35.48
    1,3-propanediol 62.04
    bromobenzene 34.79
    dibromomethane 51.01
    1,1,2,2-tetrachloroethane 63.83
    2-methyl-cyclohexyl acetate 25.7
    tetrabutyl urea 26.03
    diisobutyl methanol 20.92
    2-phenylethanol 35.68
    styrene 19.54
    dioctyl adipate 24.99
    dimethyl sulfate 41.73
    ethyl butyrate 30.75
    methyl lactate 31.91
    butyl lactate 27.47
    diethyl carbonate 21.05
    propanediol butyl ether 48.85
    triethyl orthoformate 22.82
    p-tert-butyltoluene 15.12
    methyl 4-tert-butylbenzoate 34.2
    morpholine 100.26
    tert-butylamine 41.13
    n-dodecanol 17.79
    dimethoxymethane 68.29
    ethylene carbonate 41.83
    cyrene 38.62
    2-ethoxyethyl acetate 42.46
    2-ethylhexyl acetate 33.1
    1,2,4-trichlorobenzene 38.9
    4-methylpyridine 59.71
    dibutyl ether 32.66
    2,6-dimethyl-4-heptanol 20.92
    DEF 62.94
    dimethyl isosorbide 61.71
    tetrachloroethylene 48.59
    eugenol 37.47
    triacetin 39.9
    span 80 41.9
    1,4-butanediol 27.76
    1,1-dichloroethane 49.31
    2-methyl-1-pentanol 34.34
    methyl formate 48.7
    2-methyl-1-butanol 40.31
    n-decane 7.33
    butyronitrile 43.96
    3,7-dimethyl-1-octanol 28.89
    1-chlorooctane 21.85
    1-chlorotetradecane 10.4
    n-nonane 7.59
    undecane 5.85
    tert-butylcyclohexane 7.9
    cyclooctane 5.83
    cyclopentanol 57.01
    tetrahydropyran 82.83
    tert-amyl methyl ether 37.18
    2,5,8-trioxanonane 72.22
    1-hexene 28.41
    2-isopropoxyethanol 38.32
    2,2,2-trifluoroethanol 32.41
    methyl butyrate 38.86

    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