Nickel

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  • Identifiers

    CAS number
    7440-02-0

    Molecular formula
    Ni

    SMILES
    [Ni]

    Safety labels

    Irritant
    Irritant

    Health Hazard
    Health

  • Odor profile

  • Properties

    pKa est.
    -40.85 (strong acid)

    Molecular weight
    58.693 g/mol

    Melting point expt.

    • 2831 °F (NIOSH, 2024)
    • 2651 °F (NTP, 1992)
    • 2831 °F
    • 1455 °C

    Boiling point

    • 5139 °F at 760 mmHg (NIOSH, 2024)
    • 4946 °F at 760 mmHg (NTP, 1992)
    • 2730 °C
    • 5139 °F

    Flash point

    • -14.48 ˚C est.

    Solubility expt.

    • Insoluble (NIOSH, 2024)
    • Insoluble (NTP, 1992)
    • INSOL IN WATER, AMMONIA; SOL IN DIL NITRIC ACID; SLIGHTLY SOL IN HYDROCHLORIC ACID, SULFURIC ACID
    • Solubility in water, mg/l at 37 °C: 1.1 (practically insoluble)
    • Insoluble

  • Synonyms

    • NICKEL
    • 7440-02-0
    • Fibrex
    • Metallic nickel
    • Nickel particles
    • Fibrex P
    • Niccolum metallicum
    • Nickel 200
    • Nickel 201
    • Nickel 205
    • Nickel 207
    • Nickel 270
    • Alcan 756
    • NI
    • Ni 4303T
    • Ni 0901-S
    • RCH 55/5
    • NI 0901-S (harshaw)
    • Ni 270
    • CI 77775
    • DTXSID2020925
    • CHEBI:28112
    • 7OV03QG267
    • C.I. 77775
    • Dietary Nickel
    • NICKEL METAL
    • RefChem:6057
    • DTXCID80925
    • 231-111-4
    • 445-070-7
    • 935-135-2
    • Nichel
    • Nickel sponge
    • Raney Nickel
    • nickel atom
    • Nickel ion
    • Nickel, ion (Ni1+)
    • niccolum
    • niquel
    • Nickel foil
    • nickel(1+) ion
    • Nickel,Raney Nickel
    • Nickel ion(1+)
    • nickel(1+)
    • MFCD00011137
    • NICKEL (III) ION
    • NUZ5T2QN2V
    • 28Ni
    • Nickel powder
    • Nickel rod
    • Nickel wire
    • Nickel nanowires
    • 8049-31-8
    • Nickel catalyst
    • Nickel, elemental
    • Nichel [Italian]
    • NP 2
    • Nickel hydride
    • CCRIS 427
    • EL12
    • HSDB 1096
    • Nickel wire, 0.5mm (0.02in) dia, annealed
    • Nickel wire, 1.0mm (0.04in) dia, annealed
    • Nickel wire, 2.0mm (0.08in) dia, annealed
    • Al alloy CRM for Nickel in 242, O 64x25 mm
    • Nickel, elemental/metal
    • Nickel - Ni @ 1000 microg/g in Hydrocarbon Oil
    • Nickel - Ni @ 5000 microg/g in Hydrocarbon Oil
    • Nickel on silica/alumina
    • Nickel Standard: Ni @ 10 microg/mL in 2% HNO3
    • Nickel foil, 0.025mm (0.001in) thick, annealed
    • EINECS 231-111-4
    • Nickel Standard: Ni @ 1000 microg/mL in 5% HNO3
    • Nickel Standard: Ni @ 10000 microg/mL in 5% HNO3
    • Nickel AA Standard: Ni @ 1000 microg/mL in 5% HNO3
    • Nickel pellets
    • Nickel pieces
    • Nickel tubing
    • UNII-7OV03QG267
    • Element Nickel
    • Element:Nickel
    • Nickel Nanorods
    • Nickel Nanowire
    • Nickel Standard
    • Atomic Nickel
    • Nickel, crucible, cylindrical, length 1 pcs, outside diameter 33mm
    • Nickel, crucible, cylindrical, length 1 pcs, outside diameter 47mm
    • Raney Nickle
    • Raney-Nickel
    • Raney-Nickle
    • RaneyTM nickel
    • Element-Ni
    • Element:Ni
    • Nano Nickel
    • Raney's nickel
    • Ni on silica
    • Nickel on silica
    • Raney alloy; Fibrex; Nickel catalyst; Nickel particles; Raney-Nickel
    • RaNi
    • Sulfur-Free Antimony Concentrate: Sb @ approx. 2 wt% in Hydrocarbons
    • Nickel (atomic)
    • Nickel Nanoprisms
    • nickel on alumina
    • Raney(R) nickel
    • Nickel (element)
    • Nickel Monohydride
    • nickel(I) cation
    • Ni (element)
    • Nickel Metal Foam
    • Nickel Metal Wires
    • 3NI
    • Raney nickel, fine
    • Raney (R) nickel
    • Ra-Ni
    • Nickel solution CRS
    • Ni Standard Solution
    • CARBONYL-NICKEL
    • NICKEL ELEMENT
    • Nickel Nano Dispersion
    • NICKEL [VANDF]
    • Skeletal Nickel Catalyst
    • NICKEL [HSDB]
    • NICKEL [FCC]
    • NICKEL [WHO-DD]
    • UNII-NUZ5T2QN2V
    • NICKEL [MI]
    • SCHEMBL291
    • 7440-02-0

  • Applications

    Nickel (CAS 7440-02-0) is widely used in electroplating and protective coatings, delivering durable finishes for automotive parts, fasteners, and electronic components. It is a key alloying element in stainless steels and nickel-based superalloys, providing high strength and corrosion resistance in aerospace, chemical processing equipment, and power generation. Nickel also serves as a catalyst or catalyst promoter in refinery and chemical processes, including hydrogenation and desulfurization. In energy storage, nickel is used as an electrode material in rechargeable batteries such as nickel-cadmium (NiCd) and nickel-metal hydride (NiMH) systems. In electronics and electrical applications, nickel coatings and nickel-containing alloys improve conductivity, wear resistance, and magnetic properties for connectors, sensors, and components. Additionally, nickel compounds are used as pigments and colorants in ceramics and glass, contributing green hues and specialty finishes.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 165.12
    methanol 197.87
    isopropanol 113.13
    water 5.34
    ethyl acetate 95.36
    n-propanol 114.59
    acetone 191.46
    n-butanol 102.72
    acetonitrile 120.38
    DMF 384.75
    toluene 51.95
    isobutanol 78.5
    1,4-dioxane 225.67
    methyl acetate 114.48
    THF 241.04
    2-butanone 124.63
    n-pentanol 79.13
    sec-butanol 94.85
    n-hexane 19.82
    ethylene glycol 87.05
    NMP 306.01
    cyclohexane 27.27
    DMSO 308.34
    n-butyl acetate 81.0
    n-octanol 67.35
    chloroform 139.73
    n-propyl acetate 69.58
    acetic acid 170.36
    dichloromethane 121.66
    cyclohexanone 158.76
    propylene glycol 66.62
    isopropyl acetate 60.54
    DMAc 235.14
    2-ethoxyethanol 125.56
    isopentanol 81.39
    n-heptane 21.67
    ethyl formate 72.27
    1,2-dichloroethane 94.75
    n-hexanol 92.75
    2-methoxyethanol 214.19
    isobutyl acetate 46.72
    tetrachloromethane 39.64
    n-pentyl acetate 63.52
    transcutol 362.6
    n-heptanol 59.79
    ethylbenzene 31.73
    MIBK 71.79
    2-propoxyethanol 151.76
    tert-butanol 123.76
    MTBE 100.12
    2-butoxyethanol 101.78
    propionic acid 108.96
    o-xylene 46.08
    formic acid 79.79
    diethyl ether 111.71
    m-xylene 42.51
    p-xylene 41.04
    chlorobenzene 68.08
    dimethyl carbonate 60.16
    n-octane 11.37
    formamide 109.29
    cyclopentanone 208.14
    2-pentanone 109.84
    anisole 79.03
    cyclopentyl methyl ether 121.37
    gamma-butyrolactone 204.71
    1-methoxy-2-propanol 155.42
    pyridine 125.11
    3-pentanone 86.6
    furfural 182.79
    n-dodecane 11.11
    diethylene glycol 155.66
    diisopropyl ether 43.41
    tert-amyl alcohol 102.19
    acetylacetone 127.68
    n-hexadecane 12.16
    acetophenone 75.94
    methyl propionate 88.82
    isopentyl acetate 70.04
    trichloroethylene 156.39
    n-nonanol 57.43
    cyclohexanol 91.59
    benzyl alcohol 65.72
    2-ethylhexanol 60.6
    isooctanol 47.41
    dipropyl ether 67.08
    1,2-dichlorobenzene 67.49
    ethyl lactate 46.87
    propylene carbonate 108.94
    n-methylformamide 141.89
    2-pentanol 78.05
    n-pentane 25.67
    1-propoxy-2-propanol 108.95
    1-methoxy-2-propyl acetate 85.68
    2-(2-methoxypropoxy) propanol 103.4
    mesitylene 32.43
    ε-caprolactone 130.5
    p-cymene 30.84
    epichlorohydrin 156.1
    1,1,1-trichloroethane 91.6
    2-aminoethanol 101.41
    morpholine-4-carbaldehyde 266.43
    sulfolane 233.87
    2,2,4-trimethylpentane 14.57
    2-methyltetrahydrofuran 166.53
    n-hexyl acetate 86.4
    isooctane 11.67
    2-(2-butoxyethoxy)ethanol 141.54
    sec-butyl acetate 48.6
    tert-butyl acetate 75.47
    decalin 16.02
    glycerin 107.09
    diglyme 234.08
    acrylic acid 112.41
    isopropyl myristate 43.55
    n-butyric acid 102.38
    acetyl acetate 71.95
    di(2-ethylhexyl) phthalate 41.02
    ethyl propionate 59.71
    nitromethane 221.62
    1,2-diethoxyethane 115.03
    benzonitrile 77.27
    trioctyl phosphate 34.97
    1-bromopropane 64.72
    gamma-valerolactone 228.25
    n-decanol 46.18
    triethyl phosphate 38.88
    4-methyl-2-pentanol 49.38
    propionitrile 81.69
    vinylene carbonate 97.8
    1,1,2-trichlorotrifluoroethane 133.67
    DMS 73.41
    cumene 26.27
    2-octanol 46.21
    2-hexanone 78.29
    octyl acetate 53.79
    limonene 48.8
    1,2-dimethoxyethane 181.38
    ethyl orthosilicate 38.35
    tributyl phosphate 40.25
    diacetone alcohol 104.25
    N,N-dimethylaniline 63.24
    acrylonitrile 105.36
    aniline 68.39
    1,3-propanediol 122.83
    bromobenzene 65.29
    dibromomethane 89.66
    1,1,2,2-tetrachloroethane 119.88
    2-methyl-cyclohexyl acetate 52.73
    tetrabutyl urea 58.6
    diisobutyl methanol 41.75
    2-phenylethanol 71.97
    styrene 40.8
    dioctyl adipate 56.39
    dimethyl sulfate 103.89
    ethyl butyrate 57.97
    methyl lactate 70.12
    butyl lactate 55.34
    diethyl carbonate 43.78
    propanediol butyl ether 103.93
    triethyl orthoformate 48.27
    p-tert-butyltoluene 31.9
    methyl 4-tert-butylbenzoate 77.5
    morpholine 213.97
    tert-butylamine 83.12
    n-dodecanol 38.4
    dimethoxymethane 166.47
    ethylene carbonate 77.9
    cyrene 92.91
    2-ethoxyethyl acetate 91.05
    2-ethylhexyl acetate 60.27
    1,2,4-trichlorobenzene 80.34
    4-methylpyridine 116.73
    dibutyl ether 66.1
    2,6-dimethyl-4-heptanol 41.75
    DEF 144.0
    dimethyl isosorbide 140.63
    tetrachloroethylene 91.89
    eugenol 83.25
    triacetin 87.7
    span 80 94.19
    1,4-butanediol 61.39
    1,1-dichloroethane 90.53
    2-methyl-1-pentanol 65.7
    methyl formate 110.12
    2-methyl-1-butanol 77.55
    n-decane 15.47
    butyronitrile 75.41
    3,7-dimethyl-1-octanol 56.1
    1-chlorooctane 43.86
    1-chlorotetradecane 22.56
    n-nonane 15.67
    undecane 12.73
    tert-butylcyclohexane 16.18
    cyclooctane 12.02
    cyclopentanol 110.86
    tetrahydropyran 155.89
    tert-amyl methyl ether 82.9
    2,5,8-trioxanonane 171.6
    1-hexene 46.82
    2-isopropoxyethanol 90.28
    2,2,2-trifluoroethanol 67.88
    methyl butyrate 76.76

    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