Hydromagnesite

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  • Identifiers

    CAS number
    14476-12-1

    Molecular formula
    CH2MgO3+2

    SMILES
    C(=O)(O)O.[Mg+2]

  • Odor profile

    Fragrance
    Odorless 74.31%
    Sour 52.6%
    Sharp 32.94%
    Cheesy 25.83%
    Pungent 25.34%
    Sweaty 19.82%
    Burnt 17.8%
    Clean 16.77%
    Sulfurous 15.81%
    Dairy 15.06%

     

    Flavor
    Odorless 68.54%
    Sour 52.52%
    Vinegar 46.32%
    Pungent 41.66%
    Sharp 31.77%
    Acidic 30.93%
    Rancid 30.41%
    Formyl 23.61%
    Soy 22.6%
    Mousy 20.92%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    8.54 (weak base)

    Molecular weight
    86.33 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra fast

    Melting point expt.

    • 662 °F (Decomposes) (NIOSH, 2024)
    • 662 °F (decomposes)
    • 662 °F (Decomposes)

    Boiling point

    • Decomposes (NIOSH, 2024)
    • decomposes
    • Decomposes

    Flash point

    • 164.16 ˚C est.

    Solubility expt.

    • 0.01 % (NIOSH, 2024)
    • 0.01%

  • Synonyms

    • Hydromagnesite
    • Magnesite
    • 14476-12-1
    • Carbonic acid, magnesium salt
    • Carbonic acid, magnesium salt (1:1)
    • Magnesium carbonate, MgCO3
    • WLN: MG C-O3
    • NSC83511

  • Applications

    Hydromagnesite (CAS 14476-12-1) is a hydrated magnesium carbonate mineral widely used as a halogen-free flame retardant additive and functional filler in polymers, coatings, and adhesives, where its endothermic decomposition releases water and carbon dioxide to help suppress flames. It can be calcined to magnesium oxide for use as a refractory/ceramic additive or as a magnesium source in cement and construction formulations. In plastics and paints, hydromagnesite serves as a mineral filler that improves rheology and dimensional stability while contributing to fire performance. Depending on local regulations and formulation limits, it may be used as a magnesium source in fertilizers or soil amendments where appropriate.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 102.3
    methanol 235.56
    isopropanol 76.1
    water 725.24
    ethyl acetate 14.57
    n-propanol 59.2
    acetone 72.59
    n-butanol 37.95
    acetonitrile 32.01
    DMF 713.7
    toluene 2.73
    isobutanol 38.74
    1,4-dioxane 76.92
    methyl acetate 31.73
    THF 105.34
    2-butanone 26.69
    n-pentanol 26.64
    sec-butanol 34.95
    n-hexane 2.39
    ethylene glycol 252.34
    NMP 190.85
    cyclohexane 1.62
    DMSO 322.23
    n-butyl acetate 10.82
    n-octanol 10.84
    chloroform 2.48
    n-propyl acetate 16.56
    acetic acid 83.31
    dichloromethane 4.15
    cyclohexanone 20.53
    propylene glycol 162.01
    isopropyl acetate 11.35
    DMAc 319.03
    2-ethoxyethanol 128.51
    isopentanol 27.26
    n-heptane 2.08
    ethyl formate 37.4
    1,2-dichloroethane 5.26
    n-hexanol 16.04
    2-methoxyethanol 254.95
    isobutyl acetate 10.29
    tetrachloromethane 1.62
    n-pentyl acetate 9.45
    transcutol 71.97
    n-heptanol 12.79
    ethylbenzene 2.0
    MIBK 14.12
    2-propoxyethanol 86.85
    tert-butanol 72.31
    MTBE 22.49
    2-butoxyethanol 53.85
    propionic acid 55.66
    o-xylene 3.9
    formic acid 215.06
    diethyl ether 19.22
    m-xylene 3.21
    p-xylene 2.85
    chlorobenzene 1.27
    dimethyl carbonate 55.73
    n-octane 0.88
    formamide 238.56
    cyclopentanone 44.7
    2-pentanone 20.53
    anisole 11.49
    cyclopentyl methyl ether 26.12
    gamma-butyrolactone 67.63
    1-methoxy-2-propanol 162.72
    pyridine 16.76
    3-pentanone 14.94
    furfural 63.74
    n-dodecane 0.78
    diethylene glycol 141.05
    diisopropyl ether 6.23
    tert-amyl alcohol 36.66
    acetylacetone 25.52
    n-hexadecane 0.8
    acetophenone 11.36
    methyl propionate 30.21
    isopentyl acetate 8.05
    trichloroethylene 4.25
    n-nonanol 9.87
    cyclohexanol 17.5
    benzyl alcohol 15.78
    2-ethylhexanol 7.26
    isooctanol 9.52
    dipropyl ether 15.54
    1,2-dichlorobenzene 1.33
    ethyl lactate 35.14
    propylene carbonate 28.75
    n-methylformamide 261.21
    2-pentanol 21.04
    n-pentane 2.77
    1-propoxy-2-propanol 52.09
    1-methoxy-2-propyl acetate 21.72
    2-(2-methoxypropoxy) propanol 42.62
    mesitylene 2.93
    ε-caprolactone 22.74
    p-cymene 2.45
    epichlorohydrin 37.96
    1,1,1-trichloroethane 2.39
    2-aminoethanol 207.2
    morpholine-4-carbaldehyde 199.66
    sulfolane 90.57
    2,2,4-trimethylpentane 1.21
    2-methyltetrahydrofuran 32.57
    n-hexyl acetate 10.36
    isooctane 1.14
    2-(2-butoxyethoxy)ethanol 51.57
    sec-butyl acetate 8.2
    tert-butyl acetate 13.38
    decalin 0.95
    glycerin 297.46
    diglyme 100.4
    acrylic acid 70.51
    isopropyl myristate 5.22
    n-butyric acid 32.19
    acetyl acetate 9.36
    di(2-ethylhexyl) phthalate 8.78
    ethyl propionate 16.38
    nitromethane 128.08
    1,2-diethoxyethane 18.91
    benzonitrile 6.89
    trioctyl phosphate 7.84
    1-bromopropane 3.01
    gamma-valerolactone 93.11
    n-decanol 7.86
    triethyl phosphate 9.17
    4-methyl-2-pentanol 12.92
    propionitrile 21.14
    vinylene carbonate 26.91
    1,1,2-trichlorotrifluoroethane 56.85
    DMS 14.73
    cumene 2.33
    2-octanol 7.41
    2-hexanone 14.98
    octyl acetate 7.82
    limonene 3.11
    1,2-dimethoxyethane 165.56
    ethyl orthosilicate 9.06
    tributyl phosphate 7.98
    diacetone alcohol 35.23
    N,N-dimethylaniline 15.42
    acrylonitrile 33.24
    aniline 10.88
    1,3-propanediol 140.75
    bromobenzene 0.69
    dibromomethane 2.41
    1,1,2,2-tetrachloroethane 5.12
    2-methyl-cyclohexyl acetate 7.88
    tetrabutyl urea 15.16
    diisobutyl methanol 5.88
    2-phenylethanol 10.61
    styrene 1.93
    dioctyl adipate 9.93
    dimethyl sulfate 84.58
    ethyl butyrate 11.06
    methyl lactate 74.78
    butyl lactate 20.55
    diethyl carbonate 9.53
    propanediol butyl ether 56.81
    triethyl orthoformate 12.42
    p-tert-butyltoluene 2.8
    methyl 4-tert-butylbenzoate 21.35
    morpholine 103.2
    tert-butylamine 32.16
    n-dodecanol 6.31
    dimethoxymethane 199.19
    ethylene carbonate 24.39
    cyrene 50.14
    2-ethoxyethyl acetate 14.79
    2-ethylhexyl acetate 5.77
    1,2,4-trichlorobenzene 1.83
    4-methylpyridine 16.13
    dibutyl ether 7.12
    2,6-dimethyl-4-heptanol 5.88
    DEF 56.08
    dimethyl isosorbide 46.58
    tetrachloroethylene 4.42
    eugenol 30.7
    triacetin 16.73
    span 80 30.91
    1,4-butanediol 83.82
    1,1-dichloroethane 3.59
    2-methyl-1-pentanol 16.11
    methyl formate 177.71
    2-methyl-1-butanol 24.52
    n-decane 1.07
    butyronitrile 16.23
    3,7-dimethyl-1-octanol 6.9
    1-chlorooctane 2.01
    1-chlorotetradecane 1.28
    n-nonane 1.01
    undecane 0.89
    tert-butylcyclohexane 1.1
    cyclooctane 1.03
    cyclopentanol 36.47
    tetrahydropyran 25.64
    tert-amyl methyl ether 17.73
    2,5,8-trioxanonane 76.13
    1-hexene 4.49
    2-isopropoxyethanol 63.24
    2,2,2-trifluoroethanol 82.12
    methyl butyrate 22.85

    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