Calcium peroxide

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  • Identifiers

    CAS number
    1305-79-9

    Molecular formula
    CaO2

    SMILES
    [O-][O-].[Ca+2]

    Safety labels

    Oxidizer
    Oxidizer

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Odorless 67.85%
    Fishy 36.71%
    Alcoholic 33.7%
    Fermented 23.53%
    Sweet 21.34%
    Ripe 21.2%
    Oily 20.41%
    Cheesy 19.85%
    Ethereal 19.76%
    Solvent 18.78%

     

    Flavor
    Odorless 43.68%
    Bitter 28.79%
    Egg 25.66%
    Fishy 25.43%
    Rotten 25.21%
    Decomposing cabbage 21.83%
    Ammoniacal 21.72%
    Pungent 21.23%
    Formyl 21.02%
    Mousy 20.05%

     

    Odor impact est.
    High

  • Properties

    pKa est.
    -3.1 (strong acid)

    Molecular weight
    72.08 g/mol

    Melting point expt.

    • Decomp at 200 °C

    Flash point

    • 47.16 ˚C est.

    Solubility expt.

    • Slightly soluble in water
    • Soluble in acids with formation of hydrogen peroxide

  • Synonyms

    • CALCIUM PEROXIDE
    • Calcium dioxide
    • 1305-79-9
    • Calper
    • calcium;peroxide
    • Calper G
    • peroxidocalcium
    • Calciumperoxid
    • Kalziumperoxid
    • UNII-7FRO2ENO91
    • Calcium peroxide (Ca(O2))
    • cyc-CaO2
    • HSDB 965
    • EINECS 215-139-4
    • UN1457
    • 78403-22-2
    • 7FRO2ENO91
    • DTXSID4050489
    • CHEBI:48233
    • CALCIUM PEROXIDE (MART.)
    • CALCIUM PEROXIDE [MART.]
    • MFCD00015988
    • Ca(O2)
    • CALCIUM OXIDE (CAO2)
    • CALCIUM PEROXIDE [MI]
    • CALCIUM PEROXIDE [FCC]
    • CALCIUM PEROXIDE [HSDB]
    • CALCIUM PEROXIDE [INCI]
    • DTXCID3029499
    • Calcium peroxide [UN1457] [Oxidizer]
    • NS00127698
    • 215-139-4
    • 684-873-9

  • Applications

    Calcium peroxide (CAS 1305-79-9) is used primarily as a solid oxygen-releasing compound across several industries: in environmental engineering and wastewater treatment to boost aerobic microbial degradation in soils and groundwater; in agricultural and soil-management applications to improve root-zone aeration and stimulate soil microbial activity; in composting and waste-management to accelerate decomposition and reduce odors; in aquaculture and pond management to provide supplemental oxygen; and as a slow-release oxidant in cleaning formulations for surface cleaning.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 85.19
    methanol 151.61
    isopropanol 65.75
    water 22.19
    ethyl acetate 37.54
    n-propanol 53.95
    acetone 118.9
    n-butanol 39.83
    acetonitrile 97.17
    DMF 376.52
    toluene 10.5
    isobutanol 37.07
    1,4-dioxane 93.96
    methyl acetate 63.47
    THF 91.28
    2-butanone 58.62
    n-pentanol 26.81
    sec-butanol 43.37
    n-hexane 5.38
    ethylene glycol 76.72
    NMP 214.79
    cyclohexane 6.65
    DMSO 325.98
    n-butyl acetate 20.28
    n-octanol 19.78
    chloroform 38.92
    n-propyl acetate 22.16
    acetic acid 127.0
    dichloromethane 48.11
    cyclohexanone 51.85
    propylene glycol 51.04
    isopropyl acetate 22.0
    DMAc 247.13
    2-ethoxyethanol 65.88
    isopentanol 32.5
    n-heptane 4.9
    ethyl formate 36.78
    1,2-dichloroethane 39.82
    n-hexanol 21.62
    2-methoxyethanol 135.58
    isobutyl acetate 13.24
    tetrachloromethane 9.77
    n-pentyl acetate 16.99
    transcutol 134.37
    n-heptanol 13.73
    ethylbenzene 7.93
    MIBK 24.71
    2-propoxyethanol 51.96
    tert-butanol 77.12
    MTBE 44.84
    2-butoxyethanol 31.9
    propionic acid 67.72
    o-xylene 13.57
    formic acid 94.22
    diethyl ether 43.32
    m-xylene 9.75
    p-xylene 11.28
    chlorobenzene 17.23
    dimethyl carbonate 36.8
    n-octane 2.66
    formamide 125.79
    cyclopentanone 75.35
    2-pentanone 39.44
    anisole 26.45
    cyclopentyl methyl ether 35.09
    gamma-butyrolactone 97.83
    1-methoxy-2-propanol 87.94
    pyridine 51.48
    3-pentanone 35.05
    furfural 87.68
    n-dodecane 2.97
    diethylene glycol 67.91
    diisopropyl ether 13.11
    tert-amyl alcohol 51.06
    acetylacetone 48.91
    n-hexadecane 3.1
    acetophenone 27.8
    methyl propionate 46.74
    isopentyl acetate 18.08
    trichloroethylene 52.89
    n-nonanol 17.27
    cyclohexanol 31.75
    benzyl alcohol 25.14
    2-ethylhexanol 14.16
    isooctanol 11.38
    dipropyl ether 18.99
    1,2-dichlorobenzene 19.15
    ethyl lactate 21.51
    propylene carbonate 41.33
    n-methylformamide 140.2
    2-pentanol 27.62
    n-pentane 6.45
    1-propoxy-2-propanol 36.5
    1-methoxy-2-propyl acetate 28.55
    2-(2-methoxypropoxy) propanol 42.24
    mesitylene 8.53
    ε-caprolactone 45.04
    p-cymene 8.58
    epichlorohydrin 67.8
    1,1,1-trichloroethane 26.55
    2-aminoethanol 77.44
    morpholine-4-carbaldehyde 172.69
    sulfolane 131.48
    2,2,4-trimethylpentane 4.29
    2-methyltetrahydrofuran 55.05
    n-hexyl acetate 26.78
    isooctane 3.26
    2-(2-butoxyethoxy)ethanol 49.57
    sec-butyl acetate 14.44
    tert-butyl acetate 26.61
    decalin 4.04
    glycerin 82.5
    diglyme 94.89
    acrylic acid 79.73
    isopropyl myristate 13.6
    n-butyric acid 48.46
    acetyl acetate 28.29
    di(2-ethylhexyl) phthalate 14.74
    ethyl propionate 23.41
    nitromethane 181.98
    1,2-diethoxyethane 35.58
    benzonitrile 28.61
    trioctyl phosphate 11.98
    1-bromopropane 21.66
    gamma-valerolactone 99.26
    n-decanol 13.82
    triethyl phosphate 15.24
    4-methyl-2-pentanol 16.84
    propionitrile 48.2
    vinylene carbonate 39.53
    1,1,2-trichlorotrifluoroethane 75.28
    DMS 31.91
    cumene 7.46
    2-octanol 11.71
    2-hexanone 24.21
    octyl acetate 17.5
    limonene 12.52
    1,2-dimethoxyethane 98.72
    ethyl orthosilicate 13.97
    tributyl phosphate 13.99
    diacetone alcohol 43.32
    N,N-dimethylaniline 26.87
    acrylonitrile 70.63
    aniline 22.99
    1,3-propanediol 75.31
    bromobenzene 14.31
    dibromomethane 31.17
    1,1,2,2-tetrachloroethane 45.01
    2-methyl-cyclohexyl acetate 16.11
    tetrabutyl urea 22.48
    diisobutyl methanol 11.87
    2-phenylethanol 19.49
    styrene 10.86
    dioctyl adipate 20.88
    dimethyl sulfate 74.63
    ethyl butyrate 18.65
    methyl lactate 45.23
    butyl lactate 18.99
    diethyl carbonate 15.68
    propanediol butyl ether 39.91
    triethyl orthoformate 16.65
    p-tert-butyltoluene 8.63
    methyl 4-tert-butylbenzoate 30.87
    morpholine 104.49
    tert-butylamine 43.66
    n-dodecanol 11.58
    dimethoxymethane 111.55
    ethylene carbonate 32.14
    cyrene 39.32
    2-ethoxyethyl acetate 26.47
    2-ethylhexyl acetate 14.6
    1,2,4-trichlorobenzene 24.6
    4-methylpyridine 43.83
    dibutyl ether 18.67
    2,6-dimethyl-4-heptanol 11.87
    DEF 79.04
    dimethyl isosorbide 52.22
    tetrachloroethylene 33.57
    eugenol 32.92
    triacetin 33.68
    span 80 32.74
    1,4-butanediol 33.93
    1,1-dichloroethane 33.42
    2-methyl-1-pentanol 21.55
    methyl formate 97.82
    2-methyl-1-butanol 30.42
    n-decane 4.04
    butyronitrile 35.09
    3,7-dimethyl-1-octanol 17.95
    1-chlorooctane 11.03
    1-chlorotetradecane 6.06
    n-nonane 3.9
    undecane 3.35
    tert-butylcyclohexane 3.96
    cyclooctane 2.82
    cyclopentanol 43.38
    tetrahydropyran 51.23
    tert-amyl methyl ether 34.99
    2,5,8-trioxanonane 73.9
    1-hexene 11.95
    2-isopropoxyethanol 40.81
    2,2,2-trifluoroethanol 55.7
    methyl butyrate 30.71

    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