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CAS No 7440-39-3 , barium

  • Name: barium
  • Synonyms: Barium and soluble compounds; Baryum [French];barium; HSDB 4481; 7440-39-3; soluble compounds; Barium; Bario [Spanish]; baryum;bario;
  • CAS Registry Number:
  • Transport: UN 3264 8
  • Melting Point: 725
  • Boiling Point: 1640
  • Density: 3.76
  • Water Solubility: Insoluble (decomposes)
  • Safety Statements: Water and stomach acids solubilize barium salts and can cause poisoning. Symptoms are vomiting, colic, diarrhea, slow irregular pulse, transient hypertension, and convulsive tremors and muscular paralysis. Death may occur in a few hours to a few days. Half-life of barium in bone has been estimated at 50 days. Dust is dangerous and explosive when exposed to heat, flame, or chemical reaction. Violent or explosive reaction with water, CCl4, fluorotrichloromethane, trichloroethylene, and C2Cl4. Incompatible with acids, C2Cl3F3, C2H2FCl3, C2HCl3 and water, 1,1,2-trichlorotrifluoroethane, and fluorotrichloroethane. The powder may ignite or explode in air or other oxidizing gases. See also
  • Hazard Symbols: Flammable (pyrophoric) at room temperature in powder form; store under inert gas, petroleum, or other oxygen-free liquid. When heated to approximately 200C in hydrogen, barium reacts violently, forming BaH2. TLV: for all soluble barium compounds, 0.5 mg/m3 (as barium).
  • EINECS: 231-149-1
  • Molecular Weight: 137.327
  • InchiKey: DSAJWYNOEDNPEQ-UHFFFAOYSA-N
  • InChI: InChI=1S/Ba
  • Risk Statements: 25-26-34
  • Molecular Formula: Ba
  • Molecular Structure:CAS No:7440-39-3 barium
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7440-39-3 Barium hydride, 99,5%

  • Barium hydride, 99,5%
  • Belgium Alkemi [Manufacturer]
  • Tel: +32 9 340 49 49
  • Fax: +32 9 340 49 47
  • Address: Poststraat, 82 B-9160 Lokeren Belgium ,Belgium
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7440-39-3 Barium

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7440-39-3 barium

  • 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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7440-39-3 Barium

  • China Haihang Industry Co., Ltd. []
  • Tel: +86-(531)-88032799
  • Fax: +86-(531)-85821093
  • Address: 2/F, East Tower, Bldg 12, No. 2 Qilihe Road, Jinan 250100, ,China
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7440-39-3 Barium hydride

  • Barium hydride, (99.5%-Ba)
  • United States Strem Chemicals, Inc. [Manufacturer]
  • Tel: (978) 499-1600/ (800) 647-8736
  • Fax: (978) 465-3104
  • Address: 7 Mulliken Way
    Newburyport, MA 01950-4098 ,United States
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7440-39-3 Barium Powder

  • China Betapharma(Shanghai)Co., Ltd. []
  • Tel: +86-(21)-33538380
  • Fax: +86-(21)-32082820
  • Address: No.17#-6D. 830 Lane, Maotai Road, Shanghai 200336, ,China
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7440-39-3 Barium

  • India Triveni Chemicals []
  • Tel: +91-(260)-2400022, 3258683
  • Fax: +91-(260)-2400022/3264008
  • Address: 135, Pancharatna, Char Rasta, G.I.D.C., Vapi, Gujarat 396 195, ,India
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7440-39-3 Barium

  • United States GFS Chemicals, Inc. [Manufacturer]
  • Tel: 800-858-9682/ 740-881-5501
  • Fax: 740-881-5989
  • Address: GFS Chemicals, Inc.
    P.O. Box 245
    Powell, OH 43065 ,United States
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7440-39-3 Barium, Metal

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7440-39-3 barium

  • United Kingdom ABSCO Ltd []
  • Tel: +44-1440-709709
  • Fax: +44 1440 709708
  • Address: 42 Hollands Road, Haverhill, Suffolk, CB9 8SA, United Kingdom Haverhill,SuffolkUnited Kingdom
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References of barium
Title: Barium
CAS Registry Number: 7440-39-3
Literature References: Ba; at. wt. 137.327; at. no. 56; valence 2. Group IIA (2). Alkaline earth metal. Abundance in earth's crust 0.05% by wt. Naturally occurring isotopes: 138 (71.70%); 137 (11.23%); 136 (7.85%); 135 (6.593%); 134 (2.42%); 132 (0.101%); 130 (0.106%). Known radioactive isotopes: 117, 119-129, 131, 133, 139-149. Does not occur free in nature as metal. Compds occur in minerals barite and witherite. Commercial production by thermal reduction of barium oxide with aluminum. First prepared as a mercury amalgam by Davy in 1808. Toxicity studies of barium compds: Syed, Hosain, Toxicol. Appl. Pharmacol. 22, 150 (1972). Reviews: Gmelins, Barium (8th ed.) 30, (1960); Goodenough, Stenger, "Magnesium, Calcium, Strontium, Barium and Radium" in Comprehensive Inorganic Chemistry Vol. 1, J. C. Bailar, Jr. et al., Eds. (Pergamon Press, Oxford, 1973) pp 591-664; Chemistry of the Elements, N. N. Greenwood, A. Earnshaw, Eds. (Pergamon Press, New York, 1984) pp 117-154; C. Boffito in Kirk-Othmer Encyclopedia of Chemical Technology vol. 3 (Wiley-Interscience, New York, 4th ed., 1992) pp 902-908. Review of toxicology and human exposure: Toxicological Profile for Barium and Compounds (PB93-110658, 1992) 163 pp.
Properties: Silvery-white, slightly lustrous metal when pure; yellowish-white when contaminated with nitrogen. Body-centered cubic structure at atm pressure. Soft, ductile. Fairly volatile; extremely reactive, very easily oxidizable; must be kept under petroleum or other oxygen-free liquid to exclude air. Reacts vigorously with water, liberating hydrogen and creating an explosion hazard. Keep dry and tightly sealed. Pyrophoric when finely divided; store powder under dry argon or helium. d 3.6. mp ~710°. bp ~1600°. E0 (aq) Ba2+/Ba -2.91 V. Emits characteristic yellow-green color in flame. Dissolves in liq NH3 to give deep blue-black solns. Solns of sol barium salts give a white ppt with H2SO4 or sol sulfates.
Melting point: mp ~710°
Boiling point: bp ~1600°
Density: d 3.6
CAUTION: Potential symptoms of overexposure to soluble barium compounds are excessive salivation, vomiting, colic, diarrhea, convulsive tremors, slow, hard pulse, elevated blood pressure, confusion; hemorrhages in stomach, intestines, kidneys; respiratory failure, cardiac arrest. See: Clinical Toxicology of Commercial Products, R. E. Gosselin et al., Eds. (Williams & Wilkins, Baltimore, 5th ed., 1984) Section III, pp 61-63; Patty's Industrial Hygiene and Toxicology vol. 2C, G. D. Clayton, F. E. Clayton, Eds. (Wiley-Interscience, New York, 4th ed., 1994) pp 1925-1930.
Use: Alloys with Al or Mg as "getters" to remove residual gases from vacuum systems and electronic tubes. Deoxidizer for steel and other metals. Carrier for radium. The b- and g-radiation emitted by 140Ba + 140La makes a large contribution to the activity of the fission products of uranium rods during the first few weeks after their withdrawal from the reactor. The emissions from 133Ba and 137mBa as standards in g-spectrometry: Haissinsky, Adloff, Radiochemical Survey of the Elements (Elsevier, 1965) pp 12-14.