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CAS No 7440-22-4 , silver

  • Name: silver
  • Synonyms: Silber; Epinall; Colloidal silver; Silver metal;silver;Argentum; Shell silver; Silver atom; Algaedyn; Amalgum;
  • CAS Registry Number:
  • Transport: UN 3264
  • Melting Point: 961 ºC
  • Boiling Point: 2212 ºC
  • Density: 1.135 g/mL at 25 °C
  • Refractive index: 20/D 1.333
  • Safety Statements: Human systemic effects by inhalation: skin effects. Inhalation of dusts can cause argyrosis. Questionable carcinogen with experimental tumorigenic data. Flammable in the form of dust when exposed to flame or by chemical reaction with C2H2, NH3, bromoazide, ClF3, ethyleneimine, H2O2, oxalic acid, H2SO4, tartaric acid. Incompatible with acetylene, acetylene compounds, aziridine, bromine azide, 3-bromopropyne, carboxylic acids, copper + ethylene glycol, electrolytes + zinc, ethanol + nitric acid, ethylene oxide, ethyl hydroperoxide, ethyleneimine, iodoform, nitric acid, ozonides, peroxomonosulfuric acid, peroxyformic acid. See also POWDERED METALS and SILVER COMPOUNDS.Analytical Methods:   For occupational chemical analysis use OSHA: #ID-125G or NIOSH: Elements (ICP), 7300; Welding and Brazing Fume, 7200; Elements in Blood or Tissue, 8005; Metals in Urine (ICP), 8310.
  • Hazard Symbols: Xi:Irritant;
  • HS Code: 71069110
  • EINECS: 231-131-3
  • Molecular Weight: 107.8682
  • InchiKey: BQCADISMDOOEFD-UHFFFAOYSA-N
  • InChI: InChI=1S/Ag
  • Risk Statements: S24/25
  • Molecular Formula: Ag
  • Molecular Structure:CAS No:7440-22-4 silver
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7440-22-4 SILVER FLAKE; 99.9%, 3N

  • Germany ABCR GmbH & Co KG [Manufacturer]
  • Tel: +49 721 95061-0
  • Fax: +49 721 95061-80
  • Address: Im Schlehert 10
    76187 Karlsruhe
    Germany ,Germany
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7440-22-4 SILVER GRANULES

  • Germany CHEMOS GmbH [Manufacturer]
  • Tel: 0049 9402/9336 0
  • Fax: 0049 9402/9336 13
  • Address: CHEMOS GmbH
    Werner-von-Siemensstr. 3
    93128 Regenstauf
    Germany ,Germany
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7440-22-4 Silver atomic absorption standard solution

  • Hong kong ADVANCED TECH. & IND. CO., LTD. [Distributor/Wholesaler]
  • Tel: 86-23902293
  • Fax: 86-27898314
  • Address: UNIT B, 1/F, CHEONG SHING IND. BLDG., 17 WALNUT ST., TAI KOK TSUI, KLN, HONG KONG Hong Kong,nilHong kong
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7440-22-4 SILVER

  • Germany Cfm Oskar Tropitzsch [Manufacturer]
  • Tel: +49-9231-9619-0
  • Fax: +49-9231-9619-60
  • Address: Cfm Oskar Tropitzsch
    Waldershofer Str. 49-51
    95615 Marktredwitz
    Germany ,Germany
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7440-22-4 Silver atomic absorption standard solution

  • India Nile Chemicals [Manufacturers]
  • Tel: +91-(22)-66313162, 23454828
  • Fax: +91-(22)-23454828
  • Address: 202, Matruchhaya, 378/80 Narshi Natha Street, Mumbai, Maharashtra 400 009, Mumbai,MumbaiIndia
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7440-22-4 SILVER (BAR, GRAIN, SHOT)

  • United States Colonial Metals Inc. [Manufacturer]
  • Tel: 410-398-7200
  • Fax: 410-398-2918
  • Address: Colonial Metals Inc.
    P.O. Box 726,
    Triumph Industrial Complex
    Elkton MD, 21922-0726 ,United States
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7440-22-4 SILVER GRANULES, 99.999+%

  • United States MV Laboratories, Inc. [Manufacturer]
  • Tel: 908-788-6906
  • Fax: 908-788-1746
  • Address: MV Laboratories, Inc.
    843 Route 12 West, Suite B17
    Frenchtown, NJ 08825 ,United States
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7440-22-4 Formaldehyde silver catalyst

  • Linyi peace is the biggest electrolysis silver catalyst manufacturer in China ,can regenerate your spent silver catalyst up to the high purity more than 99.995%,advantages as follow: 1.Large specific surface area , 2.Small system resistance , 3.Stron...
  • China Linyi Peace Precious Metal Catalyst Co., Ltd [Manufacturer]
  • Tel: 86-539-7290836
  • Address: No.728, Xiaoyitang Industrial Park, Yitang Town, Lanshan District, linyi,ShandongChina
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7440-22-4 Silver

  • China Beijing Cerametek Materials Co. Ltd. [Manufacturer]
  • Tel: +86-10-6156.6641
  • Fax: +86-10-6156.1674
  • Address: Beijing Cerametek Materials Co. Ltd.
    2-E051, BPE, W. NongLin Rd.,
    FangShan, Beijing, 102400,
    China ,China
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7440-22-4 S-1071 SILVER METAL

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References of silver
Title: Silver
CAS Registry Number: 7440-22-4
Literature References: Ag; at. wt 107.8682; at. no. 47; valence 1, 2. Group IB (11). Occurrence in the earth's crust: 0.1 ppm; also present in seawater: 0.01 ppm. Natural isotopes: 107 (51.35%); 109 (48.65%); artificial isotopes (mass numbers): 100-106, 108, 110-117. One of the earliest known metals. Found native or associated with copper, gold and lead. Principle ores are argentite, cerargyrite or horn silver (mixture of halides), proustite (3Ag2S.As2S3), pyrargyrite (Ag2S.Sb2S3). Extraction from ores: Percy et al., cited by Mellor, A Comprehensive Treatise on Inorganic and Theoretical Chemistry 3, 301 (1928); Silver, Its Economics, Extraction, Use, A. Butts, C. D. Coxe, Eds. (Van Nostrand, Princeton, 1967) 480 pp. Reviews: Thompson, "Silver" in Comprehensive Inorganic Chemistry vol. 3, J. C. Bailar, Jr. et al., Eds. (Pergamon Press, Oxford, 1973) pp 79-128; G. H. Sistare and H. B. Lockhart in Kirk-Othmer Encyclopedia of Chemical Technology vol. 21 (Wiley-Interscience, New York, 3rd ed., 1983) pp 1-32. Review of toxicology and human exposure: Toxicological Profile for Silver (PB91-180430, 1990) 157 pp.
Properties: White metal, face-centered cubic structure. More malleable and ductile than any other metal except gold; excellent conductor of heat and electricity. mp 960.5°. bp ~2000°. d15 10.49. Not attacked by water or atmospheric oxygen; blackened by ozone, by hydrogen sulfide, by sulfur. Inert to most acids; readily reacts with dil nitric acid, hot concd sulfuric acid; superficially attacked by hydrochloric acid. Sol in fused alkali hydroxides in presence of air, in fused alkali peroxides, in alkali cyanides in presence of air or oxygen. Most silver salts are light-sensitive.
Melting point: mp 960.5°
Boiling point: bp ~2000°
Density: d15 10.49
CAUTION: Potential symptoms of overexposure to dust are blue-gray eyes, nasal septum, throat and skin; irritation and ulceration of skin; GI disturbance. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 280. Blue-gray discoloration, known as argyria or argyrosis, results from chronic exposure to silver or silver salts. See Patty's Industrial Hygiene and Toxicology vol. 2A, G. D. Clayton, F. E. Clayton, Eds. (Wiley-Interscience, New York, 3rd ed., 1981) pp 1881-1894.
Use: For coinage, most frequently alloyed with copper or gold; for manuf tableware, mirrors, jewelry, ornaments; for electroplating; for making vessels and apparatus used in manuf medicinal chemicals, in processing foods and beverages, in handling organic acids; as catalyst in hydrogenation and oxidation processes; as ingredient of dental alloys. Has been used for purification of drinking water because of toxicity to bacteria and lower forms of life. Some salts used in photography.