Silver

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  • Identifiers

    CAS number
    7440-22-4

    Molecular formula
    Ag

    SMILES
    [Ag]

    Safety labels

    Health Hazard
    Health

  • Odor profile

  • Properties

    pKa est.
    -82.02 (strong acid)

    Molecular weight
    107.868 g/mol

    Melting point expt.

    • 1763.5 °F (NTP, 1992)
    • 961
    • 960.5 °C
    • 962 °C
    • 1763.5 °F
    • 1761 °F

    Boiling point

    • 4014 °F at 760 mmHg (NTP, 1992)
    • 2212
    • Approx 2000 °C
    • 2212 °C
    • 4014 °F
    • 3632 °F

    Flash point

    • 40.68 ˚C est.

    Solubility expt.

    • Insoluble (NIOSH, 2024)
    • Insoluble
    • Sol in fused alkali hydroxides in presence of air, fused peroxides, and alkali cyanides in presence of oxygen
    • INSOL IN HOT OR COLD WATER, ALKALI; SOL IN NITRIC ACID; HOT SULFURIC ACID, POTASSIUM CYANIDE /Aqueous/
    • Solubility in water, g/100ml:
    • Insoluble

  • Synonyms

    • SILVER
    • 7440-22-4
    • Argentum
    • Silver atom
    • Colloidal silver
    • Silver, colloidal
    • Silver metal
    • Algaedyn
    • Silber
    • Shell silver
    • Astroflake 5
    • Carey Lea silver
    • Argentum metallicum
    • Degussa 67
    • Degussa 80
    • Silpowder 130
    • argent
    • Silflake 135
    • Jelcon SH 1
    • KS (metal)
    • Nanosilver
    • Dotite XA 208
    • Metz 25B
    • Silver colloidal
    • D 25 (metal)
    • TCG 7r
    • Metz 3000-1
    • CI 77820
    • FA 312
    • LS 500
    • SR 999
    • silver(0)
    • EPA Pesticide Chemical Code 072501
    • 3M4G523W1G
    • C.I. 77820
    • Silver (e 174)
    • CHEBI:9141
    • INS NO.174
    • DTXSID4024305
    • CHEBI:30512
    • INS-174
    • E-174
    • Germproof
    • silver colloid
    • EmuAid
    • emuaidMAX
    • Ave Silvergen
    • SilvaPlex Wound
    • Sovereign Silver
    • SilvaPlex Throat
    • silver ion water
    • Wound Gel
    • Argentum 5
    • Argentum 6
    • Argentum 8
    • Argentum 6X
    • Colloidal silver,
    • Silver Wound Gel
    • Argentum Metalicum
    • Noble S Plus
    • G SOL Sanitizing
    • Argentum 30
    • Argentum Metallucum
    • Argentyn 23
    • Argentum 12X
    • Argentum 21X
    • PetSilver Wound 2
    • PetSilver Wound 4
    • PetSilver Wound 8
    • Argentum Metallicaum
    • Argentum 0.4
    • SilvaPlex Wound Gel
    • Petsilver Wound 12
    • emuaidMAX Concentrate
    • PetSilver Wound 16
    • Argentum Nitricum 4X
    • Banda-Sil Liquid Gel
    • Yan Plus Super Medic
    • Argentum Stibium comp.
    • PetSilver Ear Wash 4
    • PetSilver Ear Wash 8
    • Silver 8148
    • Silver metal: Argentum
    • Argentum 0.4% Adult
    • PetSilver Teeth and Gum
    • Argentum metallicum 30C
    • Argentum Metallicum 30X
    • RefChem:931747
    • Argentum metallicum 200C
    • Argentum 10/20/30
    • Argentum 17 Special Order
    • RHEUMATISM LARYNGITIS
    • Argentyn 23Professionele Eer
    • DTXCID004305
    • ANTIBACTERIAL WASHING FREE
    • Anti-Bacteria Monomer Silver Gel
    • DTXSID00904079
    • Sovereign Silver Eerste Hulp Gel
    • PetSilver Wound Gel with Hemp Oil
    • Anti-Bacteria Monomer Silver Lotion
    • Banda-Sil Gel Silver Wound Dressing
    • VA Harvest Silver Wound Gel for Pets
    • PetSilver Wound For Chickens and Birds
    • Happy Master Silver Water(hand cleaning)
    • Anti-Bacteria Monomer Silver Gel for Women
    • SILVER ION FEMININE ANTIBACTERIAL GELS
    • Argentyn 23 Professionele Eerste Hulp Zilver Gel
    • SOVEREIGN SILVER NATURAL HEALING SKIN CARE
    • iBrea Micro Silver Anti Bacterial With Pure Silver
    • SOVEREIGN SILVER FIRST AID HOMEOPATHIC MEDICINE
    • Argentyn 23Professionele Eer Professionele Eerste Hulp Zilver Gel
    • High-Efficiency Anti-Bacteria Monomer Silver Sprays for Rhinitis
    • Shuifulan High-Efficiency Anti-Bacteria Monomer Silver Gel for Women
    • Sovereign Silver First Aid Gel Topical Healing Homeopathic Medicine
    • Bang Er Jie High-Efficiency Anti-Bacteria Monomer Silver Gel for Women
    • Bang Er Jie High-Efficiency Anti-Bacteria Monomer Silver-Lotion for Women
    • Bi Fu Jian High-Efficiency Anti-Bacteria Monomer Silver Sprays for Rhinitis
    • 231-131-3
    • 628-860-8
    • 920-159-8
    • Ag
    • C.I. 77870
    • Silver(1+) ion
    • Silver(I) cation
    • Silver(II)
    • Silver, flakes
    • Silver powder
    • 7440-22-4

  • Applications

    Silver (CAS 7440-22-4) is widely used across electronics and electrical applications as a conductive material, including silver pastes for printed circuits, conductive inks for flexible electronics, and plated contacts or solder substitutes; it also plays a key role in photovoltaic manufacturing as a paste component for solar cells and in conductive polymer composites and adhesives. Silver coatings provide reflective finishes, corrosion resistance, and antimicrobial surfaces in coatings and inks. In industrial chemistry, supported silver catalysts enable selective oxidation processes (for example, ethylene to ethylene oxide) and other oxidation reactions. Its antimicrobial properties enable engineered coatings for consumer products, textiles, medical devices, and water-treatment components to reduce microbial growth. Historically, silver halides were used in photographic materials, and silver-containing compounds still influence specialized imaging and archival applications.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 287.11
    methanol 342.87
    isopropanol 197.84
    water 9.48
    ethyl acetate 172.3
    n-propanol 198.08
    acetone 349.66
    n-butanol 177.09
    acetonitrile 216.05
    DMF 691.11
    toluene 95.3
    isobutanol 135.89
    1,4-dioxane 407.84
    methyl acetate 206.96
    THF 434.45
    2-butanone 226.09
    n-pentanol 138.15
    sec-butanol 163.88
    n-hexane 34.54
    ethylene glycol 150.79
    NMP 557.15
    cyclohexane 47.78
    DMSO 554.41
    n-butyl acetate 146.93
    n-octanol 119.32
    chloroform 256.92
    n-propyl acetate 126.15
    acetic acid 306.1
    dichloromethane 223.69
    cyclohexanone 288.38
    propylene glycol 114.98
    isopropyl acetate 110.37
    DMAc 428.62
    2-ethoxyethanol 225.21
    isopentanol 142.2
    n-heptane 38.4
    ethyl formate 129.69
    1,2-dichloroethane 173.9
    n-hexanol 162.43
    2-methoxyethanol 376.66
    isobutyl acetate 85.02
    tetrachloromethane 72.42
    n-pentyl acetate 114.82
    transcutol 649.41
    n-heptanol 106.18
    ethylbenzene 57.76
    MIBK 129.85
    2-propoxyethanol 268.56
    tert-butanol 217.77
    MTBE 179.02
    2-butoxyethanol 180.82
    propionic acid 192.55
    o-xylene 84.42
    formic acid 140.99
    diethyl ether 198.62
    m-xylene 78.05
    p-xylene 75.29
    chlorobenzene 125.2
    dimethyl carbonate 109.78
    n-octane 20.26
    formamide 194.75
    cyclopentanone 379.02
    2-pentanone 197.81
    anisole 145.23
    cyclopentyl methyl ether 219.12
    gamma-butyrolactone 373.68
    1-methoxy-2-propanol 275.49
    pyridine 228.49
    3-pentanone 156.94
    furfural 333.0
    n-dodecane 19.74
    diethylene glycol 275.99
    diisopropyl ether 78.44
    tert-amyl alcohol 179.71
    acetylacetone 233.87
    n-hexadecane 21.6
    acetophenone 140.29
    methyl propionate 159.92
    isopentyl acetate 126.96
    trichloroethylene 289.65
    n-nonanol 101.65
    cyclohexanol 162.08
    benzyl alcohol 119.66
    2-ethylhexanol 107.3
    isooctanol 84.37
    dipropyl ether 121.45
    1,2-dichlorobenzene 124.15
    ethyl lactate 85.39
    propylene carbonate 199.18
    n-methylformamide 249.43
    2-pentanol 136.18
    n-pentane 44.75
    1-propoxy-2-propanol 194.03
    1-methoxy-2-propyl acetate 155.96
    2-(2-methoxypropoxy) propanol 185.99
    mesitylene 59.21
    ε-caprolactone 236.28
    p-cymene 56.02
    epichlorohydrin 283.62
    1,1,1-trichloroethane 170.11
    2-aminoethanol 176.2
    morpholine-4-carbaldehyde 483.93
    sulfolane 426.23
    2,2,4-trimethylpentane 25.64
    2-methyltetrahydrofuran 301.04
    n-hexyl acetate 154.33
    isooctane 20.55
    2-(2-butoxyethoxy)ethanol 251.31
    sec-butyl acetate 88.5
    tert-butyl acetate 137.7
    decalin 28.62
    glycerin 186.28
    diglyme 420.68
    acrylic acid 199.17
    isopropyl myristate 78.45
    n-butyric acid 180.92
    acetyl acetate 132.84
    di(2-ethylhexyl) phthalate 74.73
    ethyl propionate 107.95
    nitromethane 404.61
    1,2-diethoxyethane 207.2
    benzonitrile 140.78
    trioctyl phosphate 62.81
    1-bromopropane 116.73
    gamma-valerolactone 413.88
    n-decanol 82.09
    triethyl phosphate 71.03
    4-methyl-2-pentanol 87.38
    propionitrile 144.59
    vinylene carbonate 178.62
    1,1,2-trichlorotrifluoroethane 245.47
    DMS 134.56
    cumene 47.72
    2-octanol 82.45
    2-hexanone 141.57
    octyl acetate 97.04
    limonene 87.8
    1,2-dimethoxyethane 330.38
    ethyl orthosilicate 69.95
    tributyl phosphate 72.71
    diacetone alcohol 188.47
    N,N-dimethylaniline 115.38
    acrylonitrile 188.09
    aniline 124.44
    1,3-propanediol 213.79
    bromobenzene 120.37
    dibromomethane 164.37
    1,1,2,2-tetrachloroethane 221.25
    2-methyl-cyclohexyl acetate 96.2
    tetrabutyl urea 105.49
    diisobutyl methanol 74.85
    2-phenylethanol 129.23
    styrene 74.55
    dioctyl adipate 102.55
    dimethyl sulfate 190.37
    ethyl butyrate 105.7
    methyl lactate 126.72
    butyl lactate 99.72
    diethyl carbonate 79.95
    propanediol butyl ether 183.9
    triethyl orthoformate 87.94
    p-tert-butyltoluene 57.83
    methyl 4-tert-butylbenzoate 142.12
    morpholine 383.53
    tert-butylamine 145.6
    n-dodecanol 68.56
    dimethoxymethane 299.3
    ethylene carbonate 141.76
    cyrene 170.91
    2-ethoxyethyl acetate 165.42
    2-ethylhexyl acetate 109.26
    1,2,4-trichlorobenzene 147.05
    4-methylpyridine 213.89
    dibutyl ether 118.2
    2,6-dimethyl-4-heptanol 74.85
    DEF 257.51
    dimethyl isosorbide 255.95
    tetrachloroethylene 169.17
    eugenol 151.07
    triacetin 159.5
    span 80 169.72
    1,4-butanediol 108.28
    1,1-dichloroethane 166.19
    2-methyl-1-pentanol 116.79
    methyl formate 196.03
    2-methyl-1-butanol 134.7
    n-decane 27.58
    butyronitrile 134.49
    3,7-dimethyl-1-octanol 99.4
    1-chlorooctane 78.73
    1-chlorotetradecane 40.42
    n-nonane 27.92
    undecane 22.64
    tert-butylcyclohexane 28.78
    cyclooctane 21.37
    cyclopentanol 196.73
    tetrahydropyran 278.09
    tert-amyl methyl ether 147.66
    2,5,8-trioxanonane 308.35
    1-hexene 82.53
    2-isopropoxyethanol 161.98
    2,2,2-trifluoroethanol 124.04
    methyl butyrate 138.81

    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