Calcium

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  • Identifiers

    CAS number
    7440-70-2

    Molecular formula
    Ca

    SMILES
    [Ca]

    Safety labels

    Flammable
    Flammable

  • Odor profile

  • Properties

    pKa est.
    -57.12 (strong acid)

    Molecular weight
    40.08 g/mol

    Melting point expt.

    • 1562 °F (USCG, 1999)
    • 839°C
    • 842 °C
    • 837-841 °C

    Boiling point

    • 2714 °F at 760 mmHg (USCG, 1999)
    • 1484°C
    • 1484 °C

    Flash point

    • -97.86 ˚C est.

    Solubility expt.

    • Insoluble in benzene; reacts with water
    • Insoluble in and inert towards benzene, kerosene.
    • Solubility in water: reaction

  • Synonyms

    • CALCIUM
    • 7440-70-2
    • Calcium, elemental
    • SY7Q814VUP
    • Calcium element
    • DTXSID9050484
    • Blood Coagulation Factor IV
    • CHEBI:22984
    • CHEBI:29320
    • Factor IV
    • Calcium 40
    • Coagulation Factor IV
    • Factor IV, Coagulation
    • OnlyCal
    • Ostreae Concha
    • Resto L
    • Ena Actimineral A
    • Calcium (NOS)
    • Restoration Treatment
    • Tall G U
    • GREAT CALCIUM
    • 7030 Calcium Gold
    • RefChem:5630
    • Ostreae Concha, Calcium
    • 7030 Calcium Premium
    • C P Re
    • KOREA CALCIUM KING
    • P D ALL
    • P D ALL M
    • D T B T
    • Hantai 8030 Ca-D3 Gold
    • Hantai 8030 Ca-D3 Premium
    • Ostreae Concha (Calcium 99%)
    • DTXCID40876145
    • 231-179-5
    • Ca
    • Calcium-40
    • Elemental calcium
    • HSDB 273
    • calcium atom
    • UNII-SY7Q814VUP
    • Calcium43
    • EINECS 231-179-5
    • MFCD00085314
    • UN1401
    • EC 231-179-5
    • Calcium [UN1401] [Dangerous when wet]
    • MFCD00010897
    • Al alloy CRM for Calcium in 1075, O 64x25 mm
    • Calcium - Ca @ 1000 microg/g in Hydrocarbon Oil
    • Calcium - Ca @ 5000 microg/g in Hydrocarbon Oil
    • Calcium Standard: Ca+2 @ 1000 microg/mL in H2O
    • ICP standard Calcium 2-5% HNO3 1000 microg/mL
    • Calcium Standard: Ca @ 1000 microg/mL in 5% HNO3
    • Calcium Standard: Ca @ 10000 microg/mL in 5% HNO3
    • Calcium AA Standard: Ca @ 1000 microg/mL in 5% HNO3
    • Kalzium
    • Element Calcium
    • Element:Calcium
    • Calcium granules
    • Calcium solution
    • Calcium turnings
    • Element-Ca
    • Element:Ca
    • Sulfur-Free Calcium Concentrate: Ca @ approx. 2 wt% in Hydrocarbons
    • Sulfur-Free Calcium Standard: Ca @ 5000 microg/g in Hydrocarbon Oil
    • Calcium (atomic)
    • Ca (element)
    • Calcium (element)
    • calcium(0)
    • 6020 SS-High Level Element ICV Stock (Second Source): Ca, Fe, K, Mg, Na @ 2000 microg/mL in 5% HNO3
    • Ca Standard Solution
    • 28 - Whole milk
    • ATOMIC CALCIUM
    • Calcium turnings, 2N
    • 41 - Milk Powder
    • Calcium hydride (CaH)
    • CALCIUM [VANDF]
    • CALCIUM [HSDB]
    • CALCIUM [II]
    • CALCIUM [MI]
    • CALCIUM [USP-RS]
    • CALCIUM [WHO-DD]
    • Calcium, granular, 99%
    • 20Ca
    • Calcium granules, -9 mesh
    • Calcium Hydride Low Nitrogen
    • Ca(0)
    • CALCIUM [ORANGE BOOK]
    • Calcium hydride, coarse powder
    • CHEMBL1200496
    • SCHEMBL29350674
    • HSDB 6931
    • Calcium, pieces, <1 cm, 99%
    • Calcium crystalline dendritic pieces
    • Calcium, crystalline, dendritic, 4N
    • DB01373
    • Calcium, SAJ first grade, >=99.5%
    • Calcium standard solution (400 ppm Ca)
    • 21 - Potency of multielement supplements
    • BP-31015
    • Q706
    • 67 - Chemical analysis in processed cheese
    • AA standard CALCIUM 1M HNO3 1000 ppm
    • Calcium hydride, 99.9% trace metals basis
    • Calcium, turnings, 99% trace metals basis
    • NS00078780
    • NS00082625
    • Calcium - Ca @ 1000 microg/mL in 5% HNO3
    • 883 - Essential quality parameters of soya sauce
    • Calcium Standard: Ca @ 10 microg/mL in 2% HNO3
    • ICP standard Calcium 2-5% HCI 10000 microg/mL
    • Al alloy CRM for Calcium in 7.5% Si, O 64x25 mm
    • Calcium hydride, powder, 99.99% trace metals basis
    • Calcium hydride, reagent grade, 95% (gas-volumetric)
    • C000001000
    • Calcium hydride, chunks, +4 mesh, reagent grade, 95%
    • Calcium Standard: Ca @ 2000 microg/g in 75 cSt Oil
    • Ion Chromatography Cation Std Calcium 0.2mg/mL 200 ppm
    • Ion Chromatography Cation Std Calcium 1mg/mL 1000 ppm
    • Calcium Standard: Ca @ 1000 microg/g in Hydrocarbon Oil
    • Calcium Standard: Ca @ 5000 microg/g in Hydrocarbon Oil
    • Calcium Hollow Cathode Lamp: 1.5" Diameter, 2-pin, Non-Coded
    • Calcium Hollow Cathode Lamp: 2.0" Diameter, 4-pin, Cableless
    • Calcium Hollow Cathode Lamp: 2.0" Diameter, 9-pin, Non-Coded
    • CALCIUM-41 ISOTOPIC, NITRATE SOLUTION (set of 8 units)
    • Calcium hydride, purum p.a., >=97.0% (gas-volumetric), powder
    • 7440-70-2

  • Applications

    Calcium metal (CAS 7440-70-2) is used in metallurgy as a strong reducing agent and as a deoxidizer and desulfurizer in steelmaking, where small additions help modify sulfide inclusions to improve machinability and surface finish. It is also employed in calciothermic reductions to produce certain metals and intermetallic compounds from oxides or chlorides at high temperature. In organic synthesis, organocalcium reagents derived from calcium metal serve as nucleophiles or bases in specialized carbon–carbon bond-forming reactions. Additionally, calcium is an alloying addition in selected specialty alloys to tailor microstructure and properties for demanding applications.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 129.46
    methanol 145.22
    isopropanol 81.73
    water 2.97
    ethyl acetate 76.04
    n-propanol 87.75
    acetone 143.44
    n-butanol 77.65
    acetonitrile 90.19
    DMF 224.03
    toluene 41.17
    isobutanol 58.68
    1,4-dioxane 150.32
    methyl acetate 82.39
    THF 179.23
    2-butanone 96.45
    n-pentanol 57.75
    sec-butanol 67.77
    n-hexane 14.83
    ethylene glycol 61.91
    NMP 203.96
    cyclohexane 18.84
    DMSO 205.23
    n-butyl acetate 69.21
    n-octanol 48.63
    chloroform 122.78
    n-propyl acetate 52.53
    acetic acid 138.22
    dichloromethane 98.69
    cyclohexanone 130.75
    propylene glycol 53.39
    isopropyl acetate 44.94
    DMAc 131.38
    2-ethoxyethanol 78.53
    isopentanol 57.73
    n-heptane 16.62
    ethyl formate 54.31
    1,2-dichloroethane 72.7
    n-hexanol 77.28
    2-methoxyethanol 139.24
    isobutyl acetate 35.36
    tetrachloromethane 32.81
    n-pentyl acetate 48.27
    transcutol 238.65
    n-heptanol 46.5
    ethylbenzene 21.51
    MIBK 50.44
    2-propoxyethanol 110.43
    tert-butanol 84.45
    MTBE 65.22
    2-butoxyethanol 73.02
    propionic acid 93.32
    o-xylene 29.71
    formic acid 58.94
    diethyl ether 80.51
    m-xylene 30.11
    p-xylene 28.12
    chlorobenzene 55.48
    dimethyl carbonate 42.0
    n-octane 7.43
    formamide 73.37
    cyclopentanone 174.14
    2-pentanone 84.33
    anisole 52.62
    cyclopentyl methyl ether 88.29
    gamma-butyrolactone 166.43
    1-methoxy-2-propanol 102.33
    pyridine 102.37
    3-pentanone 63.26
    furfural 142.67
    n-dodecane 6.99
    diethylene glycol 106.35
    diisopropyl ether 28.69
    tert-amyl alcohol 68.39
    acetylacetone 88.9
    n-hexadecane 7.6
    acetophenone 51.24
    methyl propionate 67.13
    isopentyl acetate 56.51
    trichloroethylene 125.6
    n-nonanol 40.22
    cyclohexanol 68.56
    benzyl alcohol 44.78
    2-ethylhexanol 47.14
    isooctanol 35.64
    dipropyl ether 51.13
    1,2-dichlorobenzene 52.0
    ethyl lactate 32.55
    propylene carbonate 91.12
    n-methylformamide 101.08
    2-pentanol 55.03
    n-pentane 17.42
    1-propoxy-2-propanol 80.99
    1-methoxy-2-propyl acetate 65.42
    2-(2-methoxypropoxy) propanol 65.12
    mesitylene 21.41
    ε-caprolactone 102.63
    p-cymene 21.91
    epichlorohydrin 118.16
    1,1,1-trichloroethane 74.58
    2-aminoethanol 76.75
    morpholine-4-carbaldehyde 171.46
    sulfolane 182.68
    2,2,4-trimethylpentane 9.31
    2-methyltetrahydrofuran 122.95
    n-hexyl acetate 63.87
    isooctane 7.75
    2-(2-butoxyethoxy)ethanol 92.4
    sec-butyl acetate 33.98
    tert-butyl acetate 53.1
    decalin 10.55
    glycerin 76.85
    diglyme 144.5
    acrylic acid 95.62
    isopropyl myristate 29.21
    n-butyric acid 89.69
    acetyl acetate 54.43
    di(2-ethylhexyl) phthalate 29.45
    ethyl propionate 43.28
    nitromethane 166.92
    1,2-diethoxyethane 78.77
    benzonitrile 60.73
    trioctyl phosphate 24.68
    1-bromopropane 51.15
    gamma-valerolactone 169.09
    n-decanol 31.51
    triethyl phosphate 27.09
    4-methyl-2-pentanol 33.47
    propionitrile 65.16
    vinylene carbonate 82.95
    1,1,2-trichlorotrifluoroethane 97.91
    DMS 50.7
    cumene 17.65
    2-octanol 34.34
    2-hexanone 61.29
    octyl acetate 37.31
    limonene 35.24
    1,2-dimethoxyethane 105.03
    ethyl orthosilicate 26.73
    tributyl phosphate 28.37
    diacetone alcohol 71.67
    N,N-dimethylaniline 38.99
    acrylonitrile 82.18
    aniline 53.74
    1,3-propanediol 90.78
    bromobenzene 52.19
    dibromomethane 74.41
    1,1,2,2-tetrachloroethane 97.61
    2-methyl-cyclohexyl acetate 38.49
    tetrabutyl urea 39.32
    diisobutyl methanol 30.7
    2-phenylethanol 52.6
    styrene 28.37
    dioctyl adipate 37.77
    dimethyl sulfate 65.52
    ethyl butyrate 45.24
    methyl lactate 49.0
    butyl lactate 42.58
    diethyl carbonate 31.79
    propanediol butyl ether 74.64
    triethyl orthoformate 34.59
    p-tert-butyltoluene 22.61
    methyl 4-tert-butylbenzoate 53.13
    morpholine 147.98
    tert-butylamine 58.54
    n-dodecanol 25.93
    dimethoxymethane 101.7
    ethylene carbonate 64.9
    cyrene 61.43
    2-ethoxyethyl acetate 65.53
    2-ethylhexyl acetate 48.81
    1,2,4-trichlorobenzene 61.85
    4-methylpyridine 88.96
    dibutyl ether 45.46
    2,6-dimethyl-4-heptanol 30.7
    DEF 92.9
    dimethyl isosorbide 94.56
    tetrachloroethylene 74.14
    eugenol 57.6
    triacetin 61.62
    span 80 63.68
    1,4-butanediol 42.16
    1,1-dichloroethane 73.05
    2-methyl-1-pentanol 49.33
    methyl formate 74.76
    2-methyl-1-butanol 57.33
    n-decane 10.24
    butyronitrile 62.62
    3,7-dimethyl-1-octanol 40.97
    1-chlorooctane 31.21
    1-chlorotetradecane 14.89
    n-nonane 10.4
    undecane 8.16
    tert-butylcyclohexane 11.06
    cyclooctane 7.91
    cyclopentanol 83.42
    tetrahydropyran 120.04
    tert-amyl methyl ether 53.31
    2,5,8-trioxanonane 108.9
    1-hexene 37.1
    2-isopropoxyethanol 58.05
    2,2,2-trifluoroethanol 53.24
    methyl butyrate 57.48

    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