• Identifiers

    Molecular formula
    CaO

    SMILES
    O=[Ca]

  • Odor profile

    Fragrance
    Odorless 93.71%
    Pungent 22.76%
    Sharp 20.78%
    Burnt 16.15%
    Sour 15.89%
    Bitter 15.52%
    Ethereal 10.46%
    Caramellic 10.07%
    Fermented 9.75%
    Malty 9.42%

     

  • Properties

    pKa est.
    -70.23 (strong acid)

    Molecular weight
    56.08 g/mol

    Flash point

    • -239.31 ˚C est.

  • Synonyms

    • oxocalcium
    • Gebrannter kalk
    • Calcium monoxide
    • CALX
    • Calcium oxide (CaO)
    • Lime [USP]
    • Calcia
    • Calxyl
    • Lime (USP)
    • Airlock
    • Chaux vive
    • Quick lime
    • Calx usta
    • Rhenosorb C
    • Rhenosorb F
    • Desical P
    • Lime, burned
    • Caloxal CPA
    • Caloxol W3
    • Vesta PP
    • Caloxol CP2
    • Calcia (CaO)
    • Bell CML(E)
    • Bell CML(P)
    • Caswell No. 147A
    • Wapniowy tlenek
    • QC-X
    • Wapniowy tlenek [Polish]
    • Oxyde de calcium
    • Oxyde de calcium [French]
    • CCRIS 7496
    • CML 21
    • CML 31
    • CML 35
    • HSDB 1615
    • EINECS 215-138-9
    • UNII-C7X2M0VVNH
    • UN1910
    • EPA Pesticide Chemical Code 075604
    • Branntkalk
    • Kalziumoxid
    • Aetzkalk
    • Calcium oxide, CP
    • Calcium oxide, 98%
    • Calcium Oxide Dispersion
    • Calcium Oxide Nanopowder
    • Calcium oxide (JP17)
    • EC 215-138-9
    • Calcium oxide, Reagent Grade
    • Tin(IV) selenide (SnSe2)
    • Calcium oxide, p.a., 95.0%
    • AKOS015903966
    • FC07719
    • Lime, meets USP testing specifications
    • Calcium oxide, Vetec(TM) reagent grade
    • Calcium oxide [UN1910] [Corrosive]
    • Calcium oxide, 99.995% trace metals basis
    • Calcium oxide, SAJ first grade, >=98.0%
    • Calcium oxide, SAJ special grade, >=98.0%
    • D01679
    • Q185006
    • Calcium oxide, ReagentPlus(R), 99.9% trace metals basis
    • Calcium oxide, anhydrous, powder, >=99.99% trace metals basis
    • Calcium oxide, nanopowder, <160 nm particle size (BET), 98%
    • Calcium oxide, puriss., meets analytical specification of FCC, 96-100.5% (ex ignited substance), powder (fine)
  • Applications

    Lime is used across industries for key applications such as metallurgical fluxing in steelmaking and smelting; water and wastewater treatment for pH adjustment and softening; agricultural liming to raise soil pH and supply calcium to plants; in the pulp and paper industry, calcium hydroxide is used in the causticizing process to regenerate NaOH; food processing, notably maize nixtamalization using calcium hydroxide to improve texture and calcium content; construction and building materials through cement and lime-based mortars; environmental remediation and flue gas treatment using lime slurries to remove sulfur dioxide.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 847.18
    methanol 1218.41
    isopropanol 560.95
    water 387.47
    ethyl acetate 150.71
    n-propanol 503.57
    acetone 380.91
    n-butanol 388.96
    acetonitrile 273.18
    DMF 1191.35
    toluene 42.1
    isobutanol 288.58
    1,4-dioxane 428.96
    methyl acetate 213.36
    THF 473.05
    2-butanone 209.74
    n-pentanol 276.34
    sec-butanol 358.31
    n-hexane 26.08
    ethylene glycol 794.38
    NMP 555.42
    cyclohexane 29.13
    DMSO 870.88
    n-butyl acetate 101.54
    n-octanol 142.02
    chloroform 225.13
    n-propyl acetate 119.25
    acetic acid 776.66
    dichloromethane 219.41
    cyclohexanone 200.39
    propylene glycol 501.11
    isopropyl acetate 87.72
    DMAc 536.98
    2-ethoxyethanol 473.97
    isopentanol 247.72
    n-heptane 30.78
    ethyl formate 176.13
    1,2-dichloroethane 162.88
    n-hexanol 222.29
    2-methoxyethanol 909.61
    isobutyl acetate 69.71
    tetrachloromethane 63.86
    n-pentyl acetate 96.08
    transcutol 617.23
    n-heptanol 140.82
    ethylbenzene 26.52
    MIBK 104.49
    2-propoxyethanol 384.22
    tert-butanol 469.19
    MTBE 176.13
    2-butoxyethanol 261.04
    propionic acid 390.31
    o-xylene 41.86
    formic acid 830.23
    diethyl ether 225.87
    m-xylene 39.9
    p-xylene 32.31
    chlorobenzene 58.35
    dimethyl carbonate 113.75
    n-octane 13.28
    formamide 918.3
    cyclopentanone 289.66
    2-pentanone 174.91
    anisole 98.57
    cyclopentyl methyl ether 195.05
    gamma-butyrolactone 318.49
    1-methoxy-2-propanol 514.06
    pyridine 226.58
    3-pentanone 124.17
    furfural 325.78
    n-dodecane 13.01
    diethylene glycol 534.8
    diisopropyl ether 57.55
    tert-amyl alcohol 311.47
    acetylacetone 152.46
    n-hexadecane 13.29
    acetophenone 89.28
    methyl propionate 166.56
    isopentyl acetate 78.06
    trichloroethylene 215.66
    n-nonanol 114.41
    cyclohexanol 246.88
    benzyl alcohol 131.14
    2-ethylhexanol 103.13
    isooctanol 105.65
    dipropyl ether 112.04
    1,2-dichlorobenzene 60.31
    ethyl lactate 107.26
    propylene carbonate 149.1
    n-methylformamide 672.43
    2-pentanol 258.66
    n-pentane 42.97
    1-propoxy-2-propanol 256.71
    1-methoxy-2-propyl acetate 114.46
    2-(2-methoxypropoxy) propanol 180.71
    mesitylene 30.53
    ε-caprolactone 178.23
    p-cymene 31.75
    epichlorohydrin 287.46
    1,1,1-trichloroethane 98.84
    2-aminoethanol 783.93
    morpholine-4-carbaldehyde 596.56
    sulfolane 359.61
    2,2,4-trimethylpentane 20.28
    2-methyltetrahydrofuran 282.32
    n-hexyl acetate 119.34
    isooctane 16.74
    2-(2-butoxyethoxy)ethanol 279.67
    sec-butyl acetate 67.06
    tert-butyl acetate 94.35
    decalin 13.92
    glycerin 750.03
    diglyme 415.51
    acrylic acid 392.99
    isopropyl myristate 52.57
    n-butyric acid 317.35
    acetyl acetate 89.55
    di(2-ethylhexyl) phthalate 58.76
    ethyl propionate 91.88
    nitromethane 626.14
    1,2-diethoxyethane 159.71
    benzonitrile 104.03
    trioctyl phosphate 56.13
    1-bromopropane 97.43
    gamma-valerolactone 370.76
    n-decanol 88.49
    triethyl phosphate 50.81
    4-methyl-2-pentanol 125.6
    propionitrile 188.34
    vinylene carbonate 152.36
    1,1,2-trichlorotrifluoroethane 362.11
    DMS 89.66
    cumene 26.61
    2-octanol 95.35
    2-hexanone 120.48
    octyl acetate 75.28
    limonene 51.3
    1,2-dimethoxyethane 441.0
    ethyl orthosilicate 53.42
    tributyl phosphate 55.67
    diacetone alcohol 187.6
    N,N-dimethylaniline 89.7
    acrylonitrile 230.12
    aniline 139.31
    1,3-propanediol 683.77
    bromobenzene 42.1
    dibromomethane 145.62
    1,1,2,2-tetrachloroethane 195.71
    2-methyl-cyclohexyl acetate 62.1
    tetrabutyl urea 88.12
    diisobutyl methanol 65.67
    2-phenylethanol 120.77
    styrene 35.95
    dioctyl adipate 73.21
    dimethyl sulfate 174.67
    ethyl butyrate 82.19
    methyl lactate 192.74
    butyl lactate 105.81
    diethyl carbonate 55.8
    propanediol butyl ether 262.21
    triethyl orthoformate 68.83
    p-tert-butyltoluene 32.89
    methyl 4-tert-butylbenzoate 107.14
    morpholine 546.66
    tert-butylamine 272.43
    n-dodecanol 70.54
    dimethoxymethane 430.13
    ethylene carbonate 124.6
    cyrene 148.82
    2-ethoxyethyl acetate 121.26
    2-ethylhexyl acetate 63.08
    1,2,4-trichlorobenzene 77.84
    4-methylpyridine 171.54
    dibutyl ether 85.66
    2,6-dimethyl-4-heptanol 65.67
    DEF 285.43
    dimethyl isosorbide 190.42
    tetrachloroethylene 170.82
    eugenol 146.97
    triacetin 108.25
    span 80 180.94
    1,4-butanediol 338.47
    1,1-dichloroethane 133.27
    2-methyl-1-pentanol 186.84
    methyl formate 404.91
    2-methyl-1-butanol 244.45
    n-decane 18.14
    butyronitrile 181.38
    3,7-dimethyl-1-octanol 99.48
    1-chlorooctane 53.36
    1-chlorotetradecane 26.27
    n-nonane 18.02
    undecane 14.84
    tert-butylcyclohexane 15.73
    cyclooctane 12.69
    cyclopentanol 334.59
    tetrahydropyran 268.11
    tert-amyl methyl ether 144.12
    2,5,8-trioxanonane 308.03
    1-hexene 66.14
    2-isopropoxyethanol 281.91
    2,2,2-trifluoroethanol 347.25
    methyl butyrate 127.64

    Scent© AI

1 of 4
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