Platinum

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  • Identifiers

    CAS number
    7440-06-4

    Molecular formula
    Pt

    SMILES
    [Pt]

    Safety labels

    Flammable
    Flammable

  • Odor profile

  • Properties

    pKa est.
    -154.91 (strong acid)

    Molecular weight
    195.08 g/mol

    Melting point expt.

    • 3222 °F (NIOSH, 2024)
    • 1772 °C.
    • 1768.4 °C
    • 1768.3 °C
    • 1769 °C
    • 3222 °F

    Boiling point

    • 6921 °F at 760 mmHg (NIOSH, 2024)
    • 3825 °C
    • 3827 °C
    • 6921 °F

    Flash point

    • 132.41 ˚C est.

    Solubility expt.

    • Insoluble (NIOSH, 2024)
    • Soluble in aqua regia. Insoluble in mineral and organic acids.
    • Solubility in water: insoluble
    • Insoluble

  • Synonyms

    • PLATINUM
    • 7440-06-4
    • Platinum Black
    • Platinum sponge
    • Platin
    • Platinum powder
    • Platinum, elemental
    • PT
    • Platinum metallicum
    • Liquid bright platinum
    • Platina l
    • Metallic platinum
    • 49DFR088MY
    • DTXSID9064681
    • CHEBI:33364
    • C.I. 77795
    • CHEBI:33400
    • Neuralgia Numbness
    • RefChem:929411
    • Platinum metallicum 200C
    • DTXCID7047645
    • 231-116-1
    • Platinum on carbon
    • Platinum (on carbon)
    • MFCD00011179
    • platine
    • platino
    • Platinum wire
    • Platinum on alumina
    • platinum(3+)
    • 78Pt
    • Platinum powder, -325 mesh
    • Platinum foil
    • Platinum, sulfided, on carbon
    • Platinum On Carbon (10 wt. %)
    • Platinum 10% on carbon dry powder
    • Platinum Standard: Pt @ 10 microg/mL in 5% HCl
    • 7440-06-4(powder)
    • Platinum AA Standard: Pt @ 1000 microg/mL in 20% HCl
    • Platinum Internal Standard: Pt @ 10 microg/mL in 5% HCl
    • Platinum Hollow Cathode Lamp: 1.5" Diameter, 2-pin, Non-Coded
    • Platinum Hollow Cathode Lamp: 2.0" Diameter, 4-pin, Cableless
    • Platinum Hollow Cathode Lamp: 2.0" Diameter, 9-pin, Non-Coded
    • Platinum, metal
    • MFCD03458043
    • Sulfur-Free Bismuth Concentrate: Bi @ approx. 28 wt% in Hydrocarbons
    • Platinum asbestos
    • Platin [German]
    • Platinum foil, 0.1mm (0.004in) thick, Premion?
    • Platinum foil, 0.25mm (0.01in) thick, Premion?
    • Platinum Standard: Pt @ 1000 microg/mL in 20% HCl
    • Platinum Standard: Pt @ 10000 microg/mL in 20% HCl
    • platinum metal
    • platinum/carbon
    • Platinum atom
    • Atomic Platinum
    • Platinum element
    • Platinum hydride
    • Element Platinum
    • Element-Pt
    • Element:Platinum
    • Element:Pt
    • platinum/charcoal
    • Pt on charcoal
    • Pt on alumina
    • Pt on carbon
    • HSDB 6479
    • Platinum Nanorods
    • Platinum Standard
    • Platinum Nanostars
    • platinum(0)
    • Platinum (atomic)
    • Platinum on silica
    • Platinum, 1m
    • Platinum, 2m
    • Platinum, 5m
    • Platinum-on-carbon
    • Pt (element)
    • Platinum Dispersion
    • Platinum Nanoprisms
    • platinum-on-alumina
    • Platinum (element)
    • EINECS 231-116-1
    • platinum on charcoal
    • platinum(3+) ion
    • Platinum, nanopowder
    • platinum(iv) hydride
    • Platinum, 0.5m
    • Platinum Nano Powder
    • Pt Standard Solution
    • platinum(III) cation
    • Pt-C
    • Pt/C
    • Platinum 1% on carbon
    • PLATINUM [HSDB]
    • PLATINUM [MI]
    • Conductive Platinum Paste
    • Platinum, 5% on alumina
    • PLATINUM [MART.]
    • Platinum Standard Solution
    • Epitope ID:114076
    • PLATINUM [WHO-DD]
    • Platinum Hollow Nanospheres
    • Platinum on Barium Sulfate
    • Platinum, 10% on carbon
    • Platinum, 5% on graphite
    • Pt(S)/C
    • sulfided platinum on carbon
    • Platinum Sponge, 60 Mesh
    • SCHEMBL3911
    • sulphided platinum on carbon
    • Platinum powder, -22 mesh
    • Platinum sponge, -60 mesh
    • UNII-49DFR088MY
    • Platinum, 0.5% on alumina
    • Platinum 5% on Carbon, wet
    • Platinum powder, -200 mesh
    • Platinum(5%) water(71%)
    • Pt(0)
    • Platinum, Powder -200 Mesh
    • Platinum, 0.5m, 0.05mm
    • Platinum, 5% on carbon, dry
    • Trichloro(Ethene)platinate(Ii)
    • orb2939630
    • Platinum nanopowder (20 nm)
    • PLATINUM ON CARBON 1%
    • Platinum paste, screen printable
    • 7440-06-4

  • Applications

    Platinum (CAS 7440-06-4) is widely used across industrial and high-precision applications. In petrochemical processing, Pt-based catalysts enable reforming, hydrogenation, and hydrocracking steps that convert feedstocks into fuels and chemicals. In automotive exhaust systems, platinum is a key component of catalytic converters to reduce emissions. In electronics and electrical engineering, platinum is employed for corrosion-resistant contacts, thick-film sensors, electrodes, and specialized plating. In energy and electrochemistry, Pt catalysts power fuel cells and other electrochemical devices. In high-temperature glass and ceramics production, platinum and Pt-Rh alloys are used for crucibles, resistance heating elements, and other components that withstand extreme temperatures. Finally, platinum serves as a precursor for platinum-based pharmaceutical agents, with chemistry used to synthesize certain anticancer drugs under appropriate regulations and formulations.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 365.81
    methanol 426.5
    isopropanol 258.06
    water 9.28
    ethyl acetate 284.99
    n-propanol 260.05
    acetone 583.13
    n-butanol 242.65
    acetonitrile 332.76
    DMF 1064.59
    toluene 181.07
    isobutanol 186.04
    1,4-dioxane 683.64
    methyl acetate 329.65
    THF 743.65
    2-butanone 379.69
    n-pentanol 196.87
    sec-butanol 226.2
    n-hexane 60.2
    ethylene glycol 167.95
    NMP 960.39
    cyclohexane 89.93
    DMSO 908.14
    n-butyl acetate 242.14
    n-octanol 181.72
    chloroform 456.51
    n-propyl acetate 210.72
    acetic acid 425.67
    dichloromethane 410.03
    cyclohexanone 515.87
    propylene glycol 139.42
    isopropyl acetate 189.13
    DMAc 716.92
    2-ethoxyethanol 337.85
    isopentanol 202.38
    n-heptane 64.35
    ethyl formate 205.77
    1,2-dichloroethane 317.01
    n-hexanol 234.62
    2-methoxyethanol 527.32
    isobutyl acetate 146.68
    tetrachloromethane 127.12
    n-pentyl acetate 200.9
    transcutol 1005.97
    n-heptanol 160.18
    ethylbenzene 107.22
    MIBK 218.81
    2-propoxyethanol 394.35
    tert-butanol 311.24
    MTBE 288.92
    2-butoxyethanol 279.22
    propionic acid 264.49
    o-xylene 154.13
    formic acid 166.3
    diethyl ether 326.2
    m-xylene 140.94
    p-xylene 140.67
    chlorobenzene 233.28
    dimethyl carbonate 179.77
    n-octane 34.75
    formamide 243.82
    cyclopentanone 663.96
    2-pentanone 331.64
    anisole 264.48
    cyclopentyl methyl ether 377.08
    gamma-butyrolactone 652.83
    1-methoxy-2-propanol 396.44
    pyridine 412.71
    3-pentanone 272.51
    furfural 548.36
    n-dodecane 33.32
    diethylene glycol 389.4
    diisopropyl ether 134.11
    tert-amyl alcohol 267.75
    acetylacetone 412.83
    n-hexadecane 36.9
    acetophenone 254.69
    methyl propionate 261.66
    isopentyl acetate 214.67
    trichloroethylene 518.23
    n-nonanol 157.44
    cyclohexanol 257.77
    benzyl alcohol 200.05
    2-ethylhexanol 163.96
    isooctanol 131.76
    dipropyl ether 204.81
    1,2-dichlorobenzene 230.06
    ethyl lactate 138.88
    propylene carbonate 330.16
    n-methylformamide 339.23
    2-pentanol 195.6
    n-pentane 71.02
    1-propoxy-2-propanol 298.43
    1-methoxy-2-propyl acetate 260.84
    2-(2-methoxypropoxy) propanol 294.19
    mesitylene 107.87
    ε-caprolactone 408.49
    p-cymene 99.29
    epichlorohydrin 492.77
    1,1,1-trichloroethane 311.68
    2-aminoethanol 207.14
    morpholine-4-carbaldehyde 797.17
    sulfolane 732.72
    2,2,4-trimethylpentane 42.48
    2-methyltetrahydrofuran 515.38
    n-hexyl acetate 259.5
    isooctane 34.22
    2-(2-butoxyethoxy)ethanol 392.82
    sec-butyl acetate 156.45
    tert-butyl acetate 241.79
    decalin 53.17
    glycerin 234.74
    diglyme 677.79
    acrylic acid 275.14
    isopropyl myristate 134.68
    n-butyric acid 271.42
    acetyl acetate 232.15
    di(2-ethylhexyl) phthalate 128.47
    ethyl propionate 187.04
    nitromethane 601.44
    1,2-diethoxyethane 346.58
    benzonitrile 245.41
    trioctyl phosphate 103.25
    1-bromopropane 206.4
    gamma-valerolactone 673.82
    n-decanol 128.02
    triethyl phosphate 123.45
    4-methyl-2-pentanol 132.82
    propionitrile 226.66
    vinylene carbonate 289.36
    1,1,2-trichlorotrifluoroethane 409.83
    DMS 234.97
    cumene 85.83
    2-octanol 129.26
    2-hexanone 239.4
    octyl acetate 164.76
    limonene 152.15
    1,2-dimethoxyethane 556.8
    ethyl orthosilicate 123.51
    tributyl phosphate 119.25
    diacetone alcohol 303.48
    N,N-dimethylaniline 208.85
    acrylonitrile 296.46
    aniline 210.25
    1,3-propanediol 273.54
    bromobenzene 230.38
    dibromomethane 302.94
    1,1,2,2-tetrachloroethane 401.97
    2-methyl-cyclohexyl acetate 168.39
    tetrabutyl urea 175.51
    diisobutyl methanol 119.24
    2-phenylethanol 212.74
    styrene 140.57
    dioctyl adipate 180.96
    dimethyl sulfate 316.88
    ethyl butyrate 187.13
    methyl lactate 194.55
    butyl lactate 164.78
    diethyl carbonate 141.46
    propanediol butyl ether 268.17
    triethyl orthoformate 154.49
    p-tert-butyltoluene 100.88
    methyl 4-tert-butylbenzoate 246.67
    morpholine 624.24
    tert-butylamine 218.53
    n-dodecanol 109.08
    dimethoxymethane 493.15
    ethylene carbonate 237.62
    cyrene 292.02
    2-ethoxyethyl acetate 280.96
    2-ethylhexyl acetate 185.64
    1,2,4-trichlorobenzene 266.81
    4-methylpyridine 382.79
    dibutyl ether 202.69
    2,6-dimethyl-4-heptanol 119.24
    DEF 421.37
    dimethyl isosorbide 440.22
    tetrachloroethylene 299.79
    eugenol 255.05
    triacetin 273.67
    span 80 273.6
    1,4-butanediol 146.88
    1,1-dichloroethane 294.83
    2-methyl-1-pentanol 172.11
    methyl formate 284.39
    2-methyl-1-butanol 192.57
    n-decane 47.15
    butyronitrile 217.78
    3,7-dimethyl-1-octanol 156.25
    1-chlorooctane 129.56
    1-chlorotetradecane 70.02
    n-nonane 47.46
    undecane 38.36
    tert-butylcyclohexane 51.62
    cyclooctane 39.71
    cyclopentanol 312.82
    tetrahydropyran 479.92
    tert-amyl methyl ether 243.68
    2,5,8-trioxanonane 509.02
    1-hexene 136.59
    2-isopropoxyethanol 247.83
    2,2,2-trifluoroethanol 178.4
    methyl butyrate 237.2

    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