Manganese dioxide

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  • Identifiers

    CAS number
    1313-13-9

    Molecular formula
    MnO2

    SMILES
    O=[Mn]=O

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Odorless 90.88%
    Sour 24.62%
    Sharp 24.37%
    Burnt 23.44%
    Pungent 20.02%
    Caramellic 17.44%
    Bitter 13.93%
    Clean 11.65%
    Ethereal 11.65%
    Aromatic 9.85%

     

    Flavor
    Odorless 60.16%
    Bitter 47.86%
    Pungent 27.17%
    Formyl 25.86%
    Vinegar 25.79%
    Rotten 22.94%
    Mousy 19.66%
    Decomposing cabbage 19.03%
    Urine 18.97%
    Nitrile 18.9%

     

  • Properties

    pKa est.
    -18.53 (strong acid)

    Molecular weight
    86.937 g/mol

    Flash point

    • -26.52 ˚C est.

    Solubility expt.

    • Solubility in water: none

  • Synonyms

    • Manganese dioxide
    • Manganese(IV) oxide
    • Manganese peroxide
    • Manganese binoxide
    • Mangandioxid
    • Manganese superoxide
    • Manganese Black
    • Black manganese oxide
    • Cement Black
    • BOG manganese
    • Pyrolusite Brown
    • Mangaanbioxyde
    • Mangaandioxyde
    • Braunstein
    • Bruinsteen
    • Manganese (bioxyd de)
    • Manganese (dioxyde de)
    • Manganese (biossido di)
    • Manganese (diossido di)
    • C.I. 77728
    • Manganese dioxide, ore of Chapter 26
    • CHEBI:136511
    • TF219GU161
    • RefChem:5983
    • DTXCID001507827
    • 215-202-6
    • 1313-13-9
    • DTXSID6042109
    • Manganese oxide (MnO2)
    • Manganum Oxydatum Nigrum
    • dioxomanganese
    • MnO2
    • bis(oxido)manganese
    • MFCD00003463
    • Manganese(IV) oxide, CP
    • 197667-28-0
    • Bruinsteen [Dutch]
    • Braunstein [German]
    • Mangandioxid [German]
    • Mangaanbioxyde [Dutch]
    • Mangaandioxyde [Dutch]
    • Manganese (bioxyd de) [French]
    • Manganese (dioxyde de) [French]
    • Manganese (biossido di) [Italian]
    • Manganese (diossido di) [Italian]
    • EINECS 215-202-6
    • UNII-TF219GU161
    • AI3-52833
    • MnIVO2
    • Manganese Oxide Nanorods
    • Manganese Oxide Nanowires
    • Mn(IV)O2
    • SCHEMBL481
    • Manganese oxide (Mn2O4)
    • EC 215-202-6
    • Manganese(IV) Oxide Nanorods
    • Manganese(IV) oxide 100 mesh
    • DTXSID501314019
    • Manganese(IV) oxide (10 microns)
    • Manganese oxide powder (~5 micron)
    • AKOS015904163
    • Manganese(IV) oxide, p.a., 90.0%
    • BP-21373
    • NS00075645
    • C21744
    • Manganese(IV) oxide, ReagentPlus(R), >=99%
    • Manganese(IV) oxide, 99.997% (metals basis)
    • Manganese(IV) oxide, 99.99% trace metals basis
    • Q407674
    • Manganese(IV) oxide, >=99.99% trace metals basis
    • Manganese(IV) oxide, 10 mum, reagent grade, >=90%
    • Manganese(IV) oxide 60-230 mesh (suitable for organic oxidations)
    • Manganese(IV) oxide, -325 mesh < 3 microns average by Microtrac
    • 301678-04-6
    • Manganese(IV) oxide, nanorod, diam. x L 5-30 nm x 80-100 nm, 99% trace metals basis (excludes potassium content)
    • 1313-13-9

  • Applications

    Manganese dioxide (CAS 1313-13-9) is widely used as a catalyst for the decomposition of hydrogen peroxide and as a depolarizer in zinc-carbon and alkaline batteries, where it helps control the redox reactions at the cathode. It also serves as a selective oxidant in organic synthesis, notably for the oxidation of allylic and benzylic alcohols to aldehydes or ketones. In glass and ceramics, it functions as a pigment and color modifier and can act as a decolorizing agent to balance impurities in the glass melt. Additionally, MnO2 is used as an active electrode material in energy storage devices, including alkaline batteries, Zn-MnO2 cells, and some supercapacitors, contributing to charge storage and redox activity.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 615.14
    methanol 824.55
    isopropanol 544.34
    water 141.32
    ethyl acetate 223.42
    n-propanol 414.51
    acetone 570.95
    n-butanol 369.81
    acetonitrile 369.46
    DMF 1641.79
    toluene 119.81
    isobutanol 282.2
    1,4-dioxane 444.59
    methyl acetate 255.64
    THF 711.5
    2-butanone 313.09
    n-pentanol 250.91
    sec-butanol 389.63
    n-hexane 89.73
    ethylene glycol 433.16
    NMP 689.22
    cyclohexane 93.89
    DMSO 1467.45
    n-butyl acetate 116.48
    n-octanol 177.07
    chloroform 339.45
    n-propyl acetate 145.2
    acetic acid 407.31
    dichloromethane 370.47
    cyclohexanone 247.22
    propylene glycol 325.58
    isopropyl acetate 161.51
    DMAc 836.19
    2-ethoxyethanol 448.94
    isopentanol 262.93
    n-heptane 74.26
    ethyl formate 214.94
    1,2-dichloroethane 305.09
    n-hexanol 211.28
    2-methoxyethanol 890.86
    isobutyl acetate 84.85
    tetrachloromethane 123.58
    n-pentyl acetate 132.32
    transcutol 473.88
    n-heptanol 164.2
    ethylbenzene 79.19
    MIBK 190.92
    2-propoxyethanol 381.63
    tert-butanol 611.35
    MTBE 343.38
    2-butoxyethanol 266.67
    propionic acid 245.94
    o-xylene 113.88
    formic acid 385.45
    diethyl ether 425.89
    m-xylene 113.81
    p-xylene 90.12
    chlorobenzene 114.65
    dimethyl carbonate 219.69
    n-octane 46.16
    formamide 585.98
    cyclopentanone 383.49
    2-pentanone 305.1
    anisole 178.56
    cyclopentyl methyl ether 327.78
    gamma-butyrolactone 365.32
    1-methoxy-2-propanol 673.68
    pyridine 273.97
    3-pentanone 225.33
    furfural 377.57
    n-dodecane 38.28
    diethylene glycol 442.7
    diisopropyl ether 159.16
    tert-amyl alcohol 407.99
    acetylacetone 271.0
    n-hexadecane 40.49
    acetophenone 148.58
    methyl propionate 258.5
    isopentyl acetate 99.14
    trichloroethylene 319.35
    n-nonanol 157.0
    cyclohexanol 267.29
    benzyl alcohol 158.01
    2-ethylhexanol 116.08
    isooctanol 122.4
    dipropyl ether 184.69
    1,2-dichlorobenzene 117.81
    ethyl lactate 130.23
    propylene carbonate 180.97
    n-methylformamide 634.85
    2-pentanol 308.61
    n-pentane 137.65
    1-propoxy-2-propanol 280.51
    1-methoxy-2-propyl acetate 149.82
    2-(2-methoxypropoxy) propanol 195.46
    mesitylene 92.73
    ε-caprolactone 206.49
    p-cymene 63.17
    epichlorohydrin 409.4
    1,1,1-trichloroethane 223.61
    2-aminoethanol 463.61
    morpholine-4-carbaldehyde 589.83
    sulfolane 518.81
    2,2,4-trimethylpentane 53.4
    2-methyltetrahydrofuran 405.93
    n-hexyl acetate 161.36
    isooctane 48.15
    2-(2-butoxyethoxy)ethanol 278.22
    sec-butyl acetate 97.59
    tert-butyl acetate 192.01
    decalin 41.45
    glycerin 484.18
    diglyme 439.31
    acrylic acid 242.57
    isopropyl myristate 90.55
    n-butyric acid 258.34
    acetyl acetate 119.51
    di(2-ethylhexyl) phthalate 79.79
    ethyl propionate 148.8
    nitromethane 560.88
    1,2-diethoxyethane 204.45
    benzonitrile 133.59
    trioctyl phosphate 76.9
    1-bromopropane 222.57
    gamma-valerolactone 410.45
    n-decanol 127.09
    triethyl phosphate 76.67
    4-methyl-2-pentanol 167.96
    propionitrile 247.33
    vinylene carbonate 163.89
    1,1,2-trichlorotrifluoroethane 349.63
    DMS 123.17
    cumene 65.55
    2-octanol 146.02
    2-hexanone 169.11
    octyl acetate 112.84
    limonene 90.77
    1,2-dimethoxyethane 603.86
    ethyl orthosilicate 79.11
    tributyl phosphate 76.65
    diacetone alcohol 291.48
    N,N-dimethylaniline 184.7
    acrylonitrile 300.1
    aniline 186.71
    1,3-propanediol 491.09
    bromobenzene 110.37
    dibromomethane 289.5
    1,1,2,2-tetrachloroethane 315.34
    2-methyl-cyclohexyl acetate 87.6
    tetrabutyl urea 125.59
    diisobutyl methanol 98.84
    2-phenylethanol 136.41
    styrene 97.86
    dioctyl adipate 109.71
    dimethyl sulfate 360.71
    ethyl butyrate 106.27
    methyl lactate 243.26
    butyl lactate 126.34
    diethyl carbonate 78.1
    propanediol butyl ether 250.08
    triethyl orthoformate 93.13
    p-tert-butyltoluene 71.58
    methyl 4-tert-butylbenzoate 174.91
    morpholine 527.07
    tert-butylamine 411.37
    n-dodecanol 105.09
    dimethoxymethane 829.65
    ethylene carbonate 139.44
    cyrene 175.94
    2-ethoxyethyl acetate 153.95
    2-ethylhexyl acetate 81.83
    1,2,4-trichlorobenzene 134.05
    4-methylpyridine 251.07
    dibutyl ether 145.1
    2,6-dimethyl-4-heptanol 98.84
    DEF 421.52
    dimethyl isosorbide 257.95
    tetrachloroethylene 257.3
    eugenol 194.25
    triacetin 139.93
    span 80 192.75
    1,4-butanediol 228.94
    1,1-dichloroethane 269.75
    2-methyl-1-pentanol 181.35
    methyl formate 436.78
    2-methyl-1-butanol 247.92
    n-decane 54.39
    butyronitrile 227.1
    3,7-dimethyl-1-octanol 124.7
    1-chlorooctane 105.95
    1-chlorotetradecane 59.9
    n-nonane 56.0
    undecane 44.4
    tert-butylcyclohexane 43.9
    cyclooctane 48.05
    cyclopentanol 347.75
    tetrahydropyran 346.9
    tert-amyl methyl ether 291.07
    2,5,8-trioxanonane 338.58
    1-hexene 147.73
    2-isopropoxyethanol 302.13
    2,2,2-trifluoroethanol 213.88
    methyl butyrate 178.34

    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