Manganous oxide

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  • Identifiers

    CAS number
    1344-43-0

    Molecular formula
    MnO

    SMILES
    O=[Mn]

    Safety labels

    Health Hazard
    Health

  • Odor profile

    Fragrance
    Odorless 93.01%
    Pungent 22.97%
    Sharp 21.56%
    Burnt 17.11%
    Sour 16.45%
    Bitter 16.09%
    Caramellic 11.19%
    Ethereal 11.13%
    Fermented 10.06%
    Clean 9.52%

     

    Flavor
    Odorless 54.73%
    Pungent 37.6%
    Bitter 27.47%
    Rotten 26.34%
    Vinegar 25.93%
    Formyl 25.59%
    Mustard 22.1%
    Almond 20.88%
    Decomposing cabbage 20.67%
    Sulfur 19.5%

     

  • Properties

    pKa est.
    -8.69 (strong acid)

    Molecular weight
    70.937 g/mol

    Melting point expt.

    • 1840 °C

    Flash point

    • -38.41 ˚C est.

    Solubility expt.

    • Sol in acid; insol in water

  • Synonyms

    • Manganese(II) oxide
    • oxomanganese
    • Manganosite
    • Manganese Green
    • Cassel Green
    • MANGANOUS OXIDE
    • NU-Manese
    • Manganese monooxide
    • Rosensthiel Green
    • Manganese protoxide
    • Natural manganosite
    • Manganese(II) oxide, mon-
    • HSDB 1259
    • C.I. 77726
    • EINECS 215-695-8
    • CI 77726
    • EC 215-695-8
    • NUManese
    • RefChem:809935
    • Manganese(II) oxide, mon
    • DTXCID601507825
    • 1344-43-0
    • DTXSID5042110
    • Manganese oxide (MnO)
    • MANGANOUS OXIDE [HSDB]
    • Manganese monoxide
    • UNII-64J2OA7MH3
    • oxo-manganese
    • Nano Manganese Oxide Powder
    • SCHEMBL29086
    • Manganese(II) oxide, 99%
    • AKOS015904024
    • Lithium Niobate (LiNbO3) Sputtering Targets
    • NS00112689
    • Manganese(II) oxide, powder, -60 mesh, 99%
    • Q414669
    • Manganese(II) oxide, >=99.99% trace metals basis
    • 1344-43-0

  • Applications

    Manganous oxide (CAS 1344-43-0) serves as a chemical intermediate and a source of Mn2+ in the synthesis of manganese salts used in metallurgy and chemical manufacturing. It is employed as a deoxidizer and alloying additive in steelmaking and other metallurgical processes, helping control oxygen levels and improve machinability. In ceramics and glassmaking, MnO functions as a colorant and glaze component, contributing brown to green hues depending on firing conditions. It also acts as a catalyst or catalyst precursor in selective oxidation and reduction steps in chemical processing. Additionally, MnO can be used in the production of manganese-containing ferrites and other advanced materials, and may be evaluated as a stabilizer or dopant in certain polymers and coatings. Subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1208.16
    methanol 1784.8
    isopropanol 894.32
    water 525.28
    ethyl acetate 246.95
    n-propanol 744.04
    acetone 785.58
    n-butanol 598.35
    acetonitrile 495.71
    DMF 2649.61
    toluene 82.99
    isobutanol 473.7
    1,4-dioxane 742.53
    methyl acetate 352.36
    THF 839.53
    2-butanone 386.06
    n-pentanol 435.62
    sec-butanol 583.17
    n-hexane 56.35
    ethylene glycol 1209.46
    NMP 910.33
    cyclohexane 67.41
    DMSO 1923.22
    n-butyl acetate 144.34
    n-octanol 224.15
    chloroform 292.66
    n-propyl acetate 199.73
    acetic acid 873.65
    dichloromethane 355.59
    cyclohexanone 318.91
    propylene glycol 690.01
    isopropyl acetate 158.54
    DMAc 1176.48
    2-ethoxyethanol 841.94
    isopentanol 404.08
    n-heptane 61.22
    ethyl formate 272.67
    1,2-dichloroethane 295.49
    n-hexanol 289.47
    2-methoxyethanol 1554.04
    isobutyl acetate 113.14
    tetrachloromethane 93.16
    n-pentyl acetate 145.65
    transcutol 1093.59
    n-heptanol 199.57
    ethylbenzene 61.53
    MIBK 198.83
    2-propoxyethanol 575.59
    tert-butanol 839.68
    MTBE 348.36
    2-butoxyethanol 392.42
    propionic acid 455.97
    o-xylene 90.95
    formic acid 988.57
    diethyl ether 445.91
    m-xylene 81.61
    p-xylene 69.54
    chlorobenzene 89.24
    dimethyl carbonate 235.74
    n-octane 31.59
    formamide 1279.26
    cyclopentanone 462.91
    2-pentanone 333.7
    anisole 206.21
    cyclopentyl methyl ether 356.87
    gamma-butyrolactone 451.25
    1-methoxy-2-propanol 880.33
    pyridine 340.79
    3-pentanone 247.37
    furfural 463.81
    n-dodecane 29.67
    diethylene glycol 816.5
    diisopropyl ether 136.22
    tert-amyl alcohol 532.24
    acetylacetone 293.06
    n-hexadecane 30.36
    acetophenone 174.57
    methyl propionate 294.92
    isopentyl acetate 117.55
    trichloroethylene 331.02
    n-nonanol 191.23
    cyclohexanol 364.34
    benzyl alcohol 224.42
    2-ethylhexanol 151.02
    isooctanol 152.94
    dipropyl ether 200.58
    1,2-dichlorobenzene 94.09
    ethyl lactate 166.77
    propylene carbonate 193.03
    n-methylformamide 1136.24
    2-pentanol 418.24
    n-pentane 101.52
    1-propoxy-2-propanol 384.46
    1-methoxy-2-propyl acetate 179.0
    2-(2-methoxypropoxy) propanol 298.65
    mesitylene 66.72
    ε-caprolactone 260.84
    p-cymene 58.59
    epichlorohydrin 483.68
    1,1,1-trichloroethane 163.19
    2-aminoethanol 1143.26
    morpholine-4-carbaldehyde 987.69
    sulfolane 533.62
    2,2,4-trimethylpentane 42.53
    2-methyltetrahydrofuran 466.26
    n-hexyl acetate 189.46
    isooctane 34.96
    2-(2-butoxyethoxy)ethanol 459.13
    sec-butyl acetate 118.22
    tert-butyl acetate 177.8
    decalin 31.16
    glycerin 995.82
    diglyme 705.37
    acrylic acid 462.27
    isopropyl myristate 97.59
    n-butyric acid 374.25
    acetyl acetate 138.58
    di(2-ethylhexyl) phthalate 92.14
    ethyl propionate 159.39
    nitromethane 922.58
    1,2-diethoxyethane 313.21
    benzonitrile 161.02
    trioctyl phosphate 87.31
    1-bromopropane 183.11
    gamma-valerolactone 575.46
    n-decanol 155.03
    triethyl phosphate 80.76
    4-methyl-2-pentanol 213.45
    propionitrile 312.29
    vinylene carbonate 187.77
    1,1,2-trichlorotrifluoroethane 515.99
    DMS 145.67
    cumene 56.53
    2-octanol 152.62
    2-hexanone 217.71
    octyl acetate 126.02
    limonene 91.85
    1,2-dimethoxyethane 864.39
    ethyl orthosilicate 84.77
    tributyl phosphate 88.2
    diacetone alcohol 327.55
    N,N-dimethylaniline 202.25
    acrylonitrile 378.85
    aniline 217.24
    1,3-propanediol 1020.23
    bromobenzene 67.09
    dibromomethane 245.17
    1,1,2,2-tetrachloroethane 290.76
    2-methyl-cyclohexyl acetate 100.75
    tetrabutyl urea 150.72
    diisobutyl methanol 112.67
    2-phenylethanol 181.24
    styrene 80.55
    dioctyl adipate 125.75
    dimethyl sulfate 346.05
    ethyl butyrate 125.01
    methyl lactate 313.02
    butyl lactate 151.9
    diethyl carbonate 86.48
    propanediol butyl ether 418.29
    triethyl orthoformate 106.47
    p-tert-butyltoluene 62.44
    methyl 4-tert-butylbenzoate 185.49
    morpholine 918.87
    tert-butylamine 512.06
    n-dodecanol 130.3
    dimethoxymethane 967.64
    ethylene carbonate 164.13
    cyrene 259.16
    2-ethoxyethyl acetate 196.3
    2-ethylhexyl acetate 95.92
    1,2,4-trichlorobenzene 118.95
    4-methylpyridine 268.12
    dibutyl ether 158.74
    2,6-dimethyl-4-heptanol 112.67
    DEF 555.58
    dimethyl isosorbide 337.23
    tetrachloroethylene 265.82
    eugenol 238.78
    triacetin 172.95
    span 80 282.9
    1,4-butanediol 521.48
    1,1-dichloroethane 231.06
    2-methyl-1-pentanol 291.84
    methyl formate 703.4
    2-methyl-1-butanol 379.96
    n-decane 40.46
    butyronitrile 285.17
    3,7-dimethyl-1-octanol 168.22
    1-chlorooctane 96.45
    1-chlorotetradecane 52.77
    n-nonane 40.25
    undecane 33.98
    tert-butylcyclohexane 31.91
    cyclooctane 32.58
    cyclopentanol 484.42
    tetrahydropyran 437.23
    tert-amyl methyl ether 291.1
    2,5,8-trioxanonane 539.22
    1-hexene 127.82
    2-isopropoxyethanol 518.26
    2,2,2-trifluoroethanol 441.76
    methyl butyrate 209.44

    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