Copper

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  • Identifiers

    CAS number
    7440-50-8

    Molecular formula
    Cu

    SMILES
    [Cu]

    Safety labels

    Environmental Hazard
    Environmental

  • Odor profile

  • Properties

    pKa est.
    -44.1 (strong acid)

    Molecular weight
    63.55 g/mol

    Melting point expt.

    • 1981 °F (NIOSH, 2024)
    • 1083
    • 1083 °C
    • 1981 °F

    Boiling point

    • 4703 °F at 760 mmHg (NIOSH, 2024)
    • 2597
    • 2595 °C
    • 4703 °F

    Flash point

    • -1.65 ˚C est.

    Solubility expt.

    • Insoluble (NIOSH, 2024)
    • 8.96g/mL
    • Slightly sol in dilute acid
    • Slowly soluble in ammonia water
    • Solubility in water: none
    • Insoluble

  • Synonyms

    • COPPER
    • 7440-50-8
    • Copper powder
    • cuprum
    • Bronze powder
    • Copper bronze
    • Copper, elemental
    • Tatum-T
    • cuivre
    • Arwood copper
    • Copper-airborne
    • Copper-milled
    • Kafar copper
    • Paragard T 380a
    • Raney copper
    • Gold bronze
    • Allbri Natural Copper
    • Cuprum metallicum
    • Copper slag-milled
    • Copper slag-airborne
    • Copper M 1
    • Kupfer
    • OFHC Cu
    • M1 (Copper)
    • M2 (Copper)
    • M3 (Copper)
    • M4 (Copper)
    • CU M3
    • CU
    • Copper, metallic powder
    • Cuprum [Latin]
    • E 115 (metal)
    • 1721 Gold
    • ANAC 110
    • CDA 101
    • CDA 102
    • CDA 110
    • CDA 122
    • CI 77400
    • C.I. 77400
    • EPA Pesticide Chemical Code 022501
    • CE 1110
    • CHEBI:28694
    • PLASTIC IUD WITH COPPER
    • 789U1901C5
    • DTXSID2023985
    • CHEBI:30052
    • Cuprum (Latin)
    • COSMETIC BRONZE POWDER VP-1
    • COSMETIC COPPER POWDER VP-1
    • CHEBI:52630
    • Copper metal dusts
    • Copper metal fumes
    • Copper Footbath
    • Dietary Copper
    • Cramps Spasms
    • Cuprum 5
    • HB Copper Supreme
    • copper(2+) ion
    • Copper 63
    • Cuprum 12
    • Cuprum 21X
    • Cuprum 30X
    • Cuprum metallicum 6C
    • Cuprum Metallicum 6X
    • Cuprum 0.4
    • CUPRUM MET
    • Antibacterial PVC film
    • RefChem:5704
    • Cuprum 8 Special Order
    • Cuprum metallicum 7116
    • Cuprum 17 Special Order
    • Cuprum 21 Special Order
    • Cuprum Quartz (Metallic)
    • CUPRUM METALLICUM 30C
    • DTXCID503985
    • CUPRUM METALLICUM 200CK
    • NSC178261
    • Bestmade Natural Products Cuprum Metallicum
    • 231-159-6
    • Copper(II) ion
    • cobre
    • copper atom
    • Copper turnings
    • Cu-7
    • Copper chip
    • Copper foil
    • copper(0)
    • copper(3+)
    • Copper65
    • 29Cu
    • Copper shot
    • Copper wire
    • MFCD00010965
    • Atomized copper powder
    • Blister copper
    • Cathode copper
    • Rame
    • Anode copper
    • Copper dust
    • Copper precipitates
    • Copper metal powder
    • Copper Standard: Cu @ 10 microg/mL in 2% HNO3
    • 7440-50-8(powder)
    • CDX (metal)
    • Copper AA Standard: Cu @ 1000 microg/mL in 5% HNO3
    • Caswell No. 227
    • CE 7 (metal)
    • Copper gauze, 10 mesh woven from 0.15mm (0.006in) dia wire
    • Copper gauze, 30 mesh woven from 0.15mm (0.006in) dia wire
    • Cutox 6010
    • Cutox 6030
    • C 100 (metal)
    • Copper, fume
    • Copper fulleride (CuC20)
    • Paragard t380a
    • CCRIS 1577
    • HSDB 1622
    • Electrolytic refinery billet copper
    • Copper - Cu @ 1000 microg/g in Hydrocarbon Oil
    • Copper - Cu @ 5000 microg/g in Hydrocarbon Oil
    • Copper, dusts and mists
    • ICP standard Copper 2-5% HNO3 1000 microg/mL
    • Electrolytic refinery wirebar copper
    • Copper foil, 0.127mm (0.005in) thick, annealed
    • Copper foil, 0.1mm (0.004in) thick, Puratronic?
    • EINECS 231-159-6
    • 7440-50-8

  • Applications

    Copper (CAS 7440-50-8) is widely used in electronics and electrical systems as conductors, components for printed circuit boards, and reliable interconnects; in plumbing and construction, copper and copper alloys are used for pipes, fittings, and water-handling equipment; copper and its alloys (brass and bronze) provide mechanical components such as fasteners, bearings, and gears; copper is also featured in heat-exchange equipment and other industrial apparatus thanks to its high thermal conductivity and corrosion resistance; in chemical processing and catalysis, copper acts as a catalyst for various reactions and processing steps; finally, copper is used in decorative and architectural hardware and coatings/inks, including copper-based pigments and additives for paints and printed materials.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 177.2
    methanol 213.12
    isopropanol 121.55
    water 5.82
    ethyl acetate 100.91
    n-propanol 122.43
    acetone 204.85
    n-butanol 109.73
    acetonitrile 128.08
    DMF 421.73
    toluene 53.35
    isobutanol 83.84
    1,4-dioxane 240.24
    methyl acetate 121.89
    THF 256.73
    2-butanone 132.83
    n-pentanol 84.47
    sec-butanol 101.34
    n-hexane 20.53
    ethylene glycol 95.01
    NMP 331.27
    cyclohexane 27.88
    DMSO 336.08
    n-butyl acetate 85.66
    n-octanol 71.77
    chloroform 145.51
    n-propyl acetate 74.11
    acetic acid 181.96
    dichloromethane 126.51
    cyclohexanone 168.0
    propylene glycol 72.16
    isopropyl acetate 64.12
    DMAc 255.88
    2-ethoxyethanol 135.03
    isopentanol 86.96
    n-heptane 22.49
    ethyl formate 76.62
    1,2-dichloroethane 99.62
    n-hexanol 98.67
    2-methoxyethanol 230.0
    isobutyl acetate 49.79
    tetrachloromethane 40.67
    n-pentyl acetate 67.26
    transcutol 389.49
    n-heptanol 63.31
    ethylbenzene 33.14
    MIBK 76.33
    2-propoxyethanol 162.38
    tert-butanol 132.63
    MTBE 106.02
    2-butoxyethanol 108.54
    propionic acid 116.27
    o-xylene 48.15
    formic acid 86.04
    diethyl ether 118.17
    m-xylene 44.21
    p-xylene 43.13
    chlorobenzene 71.01
    dimethyl carbonate 64.22
    n-octane 11.8
    formamide 117.74
    cyclopentanone 222.2
    2-pentanone 116.67
    anisole 83.86
    cyclopentyl methyl ether 128.82
    gamma-butyrolactone 218.67
    1-methoxy-2-propanol 167.04
    pyridine 131.68
    3-pentanone 92.13
    furfural 194.49
    n-dodecane 11.66
    diethylene glycol 167.9
    diisopropyl ether 45.9
    tert-amyl alcohol 109.03
    acetylacetone 135.71
    n-hexadecane 12.76
    acetophenone 80.84
    methyl propionate 94.67
    isopentyl acetate 74.27
    trichloroethylene 164.0
    n-nonanol 61.17
    cyclohexanol 96.93
    benzyl alcohol 70.01
    2-ethylhexanol 64.41
    isooctanol 50.48
    dipropyl ether 70.95
    1,2-dichlorobenzene 70.64
    ethyl lactate 50.21
    propylene carbonate 116.14
    n-methylformamide 153.49
    2-pentanol 83.28
    n-pentane 26.63
    1-propoxy-2-propanol 116.37
    1-methoxy-2-propyl acetate 91.34
    2-(2-methoxypropoxy) propanol 111.0
    mesitylene 33.94
    ε-caprolactone 138.67
    p-cymene 32.37
    epichlorohydrin 166.08
    1,1,1-trichloroethane 95.21
    2-aminoethanol 109.64
    morpholine-4-carbaldehyde 287.6
    sulfolane 251.23
    2,2,4-trimethylpentane 15.13
    2-methyltetrahydrofuran 176.42
    n-hexyl acetate 91.77
    isooctane 12.15
    2-(2-butoxyethoxy)ethanol 151.49
    sec-butyl acetate 51.65
    tert-butyl acetate 80.1
    decalin 16.69
    glycerin 116.3
    diglyme 251.41
    acrylic acid 120.07
    isopropyl myristate 46.43
    n-butyric acid 108.49
    acetyl acetate 76.01
    di(2-ethylhexyl) phthalate 43.64
    ethyl propionate 63.48
    nitromethane 238.15
    1,2-diethoxyethane 122.9
    benzonitrile 81.68
    trioctyl phosphate 37.3
    1-bromopropane 67.55
    gamma-valerolactone 244.1
    n-decanol 49.28
    triethyl phosphate 41.48
    4-methyl-2-pentanol 52.69
    propionitrile 86.5
    vinylene carbonate 104.1
    1,1,2-trichlorotrifluoroethane 142.43
    DMS 78.51
    cumene 27.55
    2-octanol 48.99
    2-hexanone 83.42
    octyl acetate 57.19
    limonene 51.45
    1,2-dimethoxyethane 194.83
    ethyl orthosilicate 40.85
    tributyl phosphate 42.96
    diacetone alcohol 111.59
    N,N-dimethylaniline 67.44
    acrylonitrile 112.03
    aniline 71.82
    1,3-propanediol 131.87
    bromobenzene 67.5
    dibromomethane 92.96
    1,1,2,2-tetrachloroethane 125.83
    2-methyl-cyclohexyl acetate 56.19
    tetrabutyl urea 62.6
    diisobutyl methanol 44.4
    2-phenylethanol 76.31
    styrene 42.74
    dioctyl adipate 60.34
    dimethyl sulfate 111.94
    ethyl butyrate 61.62
    methyl lactate 75.38
    butyl lactate 58.86
    diethyl carbonate 46.62
    propanediol butyl ether 111.2
    triethyl orthoformate 51.43
    p-tert-butyltoluene 33.45
    methyl 4-tert-butylbenzoate 82.44
    morpholine 228.14
    tert-butylamine 88.73
    n-dodecanol 40.98
    dimethoxymethane 179.59
    ethylene carbonate 82.74
    cyrene 99.77
    2-ethoxyethyl acetate 96.86
    2-ethylhexyl acetate 63.79
    1,2,4-trichlorobenzene 84.29
    4-methylpyridine 122.68
    dibutyl ether 70.09
    2,6-dimethyl-4-heptanol 44.4
    DEF 155.08
    dimethyl isosorbide 150.84
    tetrachloroethylene 96.21
    eugenol 88.92
    triacetin 93.67
    span 80 100.94
    1,4-butanediol 65.98
    1,1-dichloroethane 94.67
    2-methyl-1-pentanol 70.02
    methyl formate 118.63
    2-methyl-1-butanol 82.79
    n-decane 16.24
    butyronitrile 79.75
    3,7-dimethyl-1-octanol 59.74
    1-chlorooctane 46.28
    1-chlorotetradecane 23.82
    n-nonane 16.39
    undecane 13.37
    tert-butylcyclohexane 16.9
    cyclooctane 12.33
    cyclopentanol 117.97
    tetrahydropyran 164.3
    tert-amyl methyl ether 88.13
    2,5,8-trioxanonane 184.29
    1-hexene 49.23
    2-isopropoxyethanol 96.88
    2,2,2-trifluoroethanol 72.31
    methyl butyrate 81.85

    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