Barium Selenite is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered.American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia)and follows applicable ASTM testing standards.Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.
Barium is a Block S, Group 2, Period 6 element. The number of electrons in each of Barium's shells is 2, 8, 18, 18, 8, 2 and its electronic configuration is [Xe] 6s2. In its elemental form barium's CAS number is 7440-39-3. The barium atom has a radius of 217.4.pm and it's Van der Waals radius is 200.pm. Barium powder can ignite spontaneously in air and when Barium compounds are water or acid soluble, they are very poisonous. Barium sulfate which is used in x-ray imaging, is highly insoluble in water, and consequently completely removed from the digestive tract. Barium is a member of the alkaline-earth metals. It has technical applications in glass, electronics and medicine. It is also used in paints and colorants. Electronic coatings based on barium titanate are essential to cell phones and other microelectronics. It has long been used in medical diagnostic techniques because it makes a good x-ray contrast medium. Barium is a dopant in various fluorescent lamp coating formulas. Barium information, including Technical Data, Safety Data and its High Purity properties , research , applications and other useful facts are discussed here. Scientific facts such as the atomic structure, ionization energy , abundance on Earth , conductivity and thermal properties are included. See Barium research below.
Selenium is a Block P, Group 16, Period 4 element. The number of electrons in each of Selenium's shells is 2, 8, 18, 6 and its electronic configuration is [Ar] 3d10 4s2 4p4. In its elemental form selenium's CAS number is 7782-49-2. The selenium atom has a radius of 116.pm and it's Van der Waals radius is 190.pm. The EPA does not classify selenium as carcinogenic, although selenium sulfide is a probable carcinogen. Selenates and selenites which are compounds of selenium, are highly toxic. Hydrogen selenide gas (SeH2) is the most acutely toxic compound of selenium. Selenium exhibits both photovoltaic action, where light is converted directly into electricity, and photoconductive action, where the electrical resistance decreases with increased illumination. of photocells and exposure meters for photographic use, as well as solar cells. Below its melting point, selenium is a p-type semiconductor and has many uses in electronic and solid-state applications. Selenium is available as metal and compounds with purities from 99% to 99.9999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Selenium was first discovered by Jons Berzelius in 1817. The origin of the name Selenium comes from the Greek word "Selênê" meaning moon. See selenium research below.
PACKAGING SPECIFICATIONS FOR BULK & RESEARCH QUANTITIES
Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Material Safety Data Sheet (MSDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes.
Efficacy and safety of leuprorelin in patients with spinal and bulbar muscular atrophy (JASMITT study): a multicentre, randomised, double-blind, placebo-controlled trial. Katsuno M, Banno H, Suzuki K, Takeuchi Y, Kawashima M, Yabe I, Sasaki H, Aoki M, Morita M, Nakano I, Kanai K, Ito S, Ishikawa K, Mizusawa H, Yamamoto T, Tsuji S, Hasegawa K, Shimohata T, Nishizawa M, Miyajima H, Kanda F, Watanabe Y, Nakashima K, Tsujino A, Yamashita T, Uchino M, Fujimoto Y, Tanaka F, Sobue G; for the Japan SBMA Interventional Trial for TAP-144-SR (JASMITT) study group. Lancet Neurol. 2010 Sep;9(9):875-884. Epub 2010 Aug 4. PubMed PMID: 20691641.
Multiple primary malignant tumors of upper gastrointestinal tract: A novel role of (18)F-FDG PET/CT. Sun L, Wan Y, Lin Q, Sun YH, Zhao L, Luo ZM, Wu H. World J Gastroenterol. 2010 Aug 21;16(31):3964-9. PubMed PMID: 20712059.
Gastrointestinal lymphoma: a spectrum of fluoroscopic and CT findings. Engin G, Korman U. Diagn Interv Radiol. 2010 Aug 20. doi: 10.4261/1305-3825.DIR.3332-10.3. [Epub ahead of print] PubMed PMID: 20725903.
Incomplete reprogramming after fusion of human multipotent stromal cells and bronchial epithelial cells. Curril IM, Koide M, Yang CH, Segal A, Wellman GC, Spees JL. FASEB J. 2010 Aug 19. [Epub ahead of print] PubMed PMID: 20724526.
Ca2+ - dependent and Na+ - dependent K+ conductances contribute to a slow AHP in thalamic paraventricular nucleus neurons: a novel target for orexin receptors. Zhang L, Kolaj M, Renaud LP. J Neurophysiol. 2010 Aug 18. [Epub ahead of print] PubMed PMID: 20719929.
Synthesis, crystal and electronic structures, and physical properties of caged ternary Cu-rich antimonide: BaCu(7.31(3))Sb5. Zheng WZ, Wang P, Wu LM, Chen L. Inorg Chem. 2010 Aug 16;49(16):7491-6. PubMed PMID: 20690758.
Mechanisms of the relaxant effect of a Danshen and Gegen formulation on rat isolated cerebral basilar artery. Lam FF, Deng SY, Ng ES, Yeung JH, Kwan YW, Lau CB, Koon JC, Zhou L, Zuo Z, Leung PC, Fung KP. J Ethnopharmacol. 2010 Aug 16. [Epub ahead of print] PubMed PMID: 20723594.
Lateral supragenicular pedicle perforator flap: Clinical results and vascular anatomy. Nguyen AT, Wong C, Mojallal A, Saint-Cyr M. J Plast Reconstr Aesthet Surg. 2010 Aug 15. [Epub ahead of print] PubMed PMID: 20716494.
Ionization Behavior, Stoichiometry of Association, and Accessibility of Functional Groups in the Active Layers of Reverse Osmosis and Nanofiltration Membranes. Coronell O, Gonza´lez MI, Marin~as BJ, Cahill DG. Environ Sci Technol. 2010 Aug 11. [Epub ahead of print] PubMed PMID: 20701293.
Does the amount of tagged stool and fluid significantly affect the radiation exposure in low-dose CT colonography performed with an automatic exposure control? Lim HK, Lee KH, Kim SY, Kim KJ, Kim B, Lee H, Park SH, Yanof JH, Hwang SS, Kim YH. Eur Radiol. 2010 Aug 11. [Epub ahead of print] PubMed PMID: 20700594.
Dynamics of highly excited barium atoms deposited on large argon clusters. I. General trends. Masson A, Poisson L, Gaveau MA, Soep B, Mestdagh JM, Mazet V, Spiegelman F. J Chem Phys. 2010 Aug 7;133(5):054307. PubMed PMID: 20707532.
MDCT appearance of the appendix: how does the low-density barium sulfate oral contrast agent affect it? Yaghmai V, Aghaei-Lasboo A, Brandwein WM, Tochetto S, Mafi JN, Miller FH, Nikolaidis P. Emerg Radiol. 2010 Aug 4. [Epub ahead of print] PubMed PMID: 20683631.
Ultraviolet-visible absorption and luminescence properties of quinacridone-barium sulfate solid mixtures. Gentili PL, Clementi C, Romani A. Appl Spectrosc. 2010 Aug;64(8):923-9. PubMed PMID: 20719057.
A 74-year-old woman with Dysphagia: what is your diagnosis by endoscopic and barium swallow finding? Lee JW, Kwon JG, Kim EY, Jung JT, Han J, Kim HG. J Neurogastroenterol Motil. 2010 Jul;16(3):331-2. Epub 2010 Jul 26. PubMed PMID: 20680175; PubMed Central PMCID: PMC2912129.
Is there a proper way to treat shortened oesophagus? About a series of 67 patients. Pirard L, Weerts JM, Buldgen B, Deben L, Dewandre JM, Francart D, Monami B, Markiewicz S, Wahlen C, Jehaes C. Acta Chir Belg. 2010 May-Jun;110(3):275-9. PubMed PMID: 20690507.
The Humanized NOD/SCID Mouse as a Preclinical Model to Study the Fate of Encapsulated Human Islets. Vaithilingam V, Oberholzer J, Guillemin GJ, Tuch BE. Rev Diabet Stud. 2010 Spring;7(1):62-73. Epub 2010 May 10. PubMed PMID: 20703439.
Conventional barium enema in early pregnancy. Han BH, Han JY, Choi JS, Ahn HK, Nava-Ocampo AA. J Obstet Gynaecol. 2010;30(6):559-62. PubMed PMID: 20701501.
Screening for Colorectal Cancer: An Updated Systematic Review [Internet]. Whitlock EP, Lin J, Liles E, Beil T, Fu R, O'Connor E, Thompson RN, Cardenas T. Rockville (MD): Agency for Healthcare Research and Quality (US); 2008 Oct. Available from http://www.ncbi.nlm.nih.gov/bookshelf/br.fcgi?book=es65v1 PubMed PMID: 20722162.
Screening for Colorectal Cancer in Adults [Internet]. Pignone MP, Rich M, Teutsch S, Berg A, Lohr K. Rockville (MD): Agency for Healthcare Research and Quality (US); 2002 Jul. Available from http://www.ncbi.nlm.nih.gov/bookshelf/br.fcgi?book=es7 PubMed PMID: 20722168.
Recent Research & Development for Selenite
Sodium selenite radiosensitizes hormone-refractory
prostate cancer xenograft tumors but Not intestinal crypt cells in In vivo. Tian J, Ning S, Knox SJ. Int J
Radiat Oncol Biol Phys. 2010 Jul 7. [Epub ahead of print] PubMed PMID: 20615620.
Development of morulae from the
oocytes of cultured sheep preantral follicles. Arunakumari G, Shanmugasundaram N, Rao VH. Theriogenology. 2010 Jul 6. [Epub
ahead of print] PubMed PMID: 20615540.
Aerobic biogenesis of selenium nanospheres by Bacillus
cereus isolated from coalmine soil. Dhanjal S, Cameotra SS. Microb Cell Fact. 2010 Jul 5;9(1):52. [Epub
ahead of print] PubMed PMID: 20602763.
Effect of selenium and vitamin E on oxidative stress in lambs
experimentally infected with Haemonchus contortus. do Reo Leal ML, de Camargo EV, Henrique Ross D, Molento MB, Dos Anjos Lopes
ST, da Rocha JB. Vet Res Commun. 2010 Jul 5.
[Epub ahead of print] PubMed PMID: 20607397.
Prevention
Effect in Selenite-Induced Cataract in Vivo and Antioxidative Effects in Vitro of
Crataegus pinnatifida Leaves. Wang T, Zhang P, Zhao C, Zhang Y, Liu H, Hu L, Gao X, Zhang D. Biol Trace Elem Res. 2010 Jul 2. [Epub ahead of
print] PubMed PMID: 20596791.
Speciation analysis of arsenic and
selenium compounds by CE-dynamic reaction cell-ICP-MS. Hsieh MW, Liu CL, Chen JH, Jiang SJ. Electrophoresis. 2010
Jul;31(13):2272-8. PubMed PMID: 20593404.
Response of nitrogen metabolism in lettuce plants subjected to
different doses and forms of selenium. Rios JJ, Blasco B, Rosales MA, Sanchez-Rodriguez E, Leyva R, Cervilla LM,
Romero L, Ruiz JM. J Sci Food Agric. 2010 Jun
10;90(11):1914-1919. [Epub ahead of print] PubMed PMID: 20602511.
Limited effects of
selenium substitution in the prevention of radiation-associated toxicities.
results of a randomized study in head and neck cancer patients. Büntzel J, Riesenbeck D, Glatzel M, Berndt-Skorka R, Riedel T, Mücke R,
Kisters K, Schönekaes KG, Schäfer U, Bruns F, Micke O. Anticancer Res.
2010 May;30(5):1829-32. PubMed PMID: 20592387.
Production of polyselenodipenicillamines, unique selenium compounds. Nishida H, Ando M, Itoh K, Ueda K, Nishida Y, Okamoto Y, Toda C, Kojima N. Chem Pharm
Bull (Tokyo). 2010;58(7):957-60. PubMed PMID: 20606346.
Characterization of Protein Targets of
Mammalian Thioredoxin Reductases. Turanov AA, Hatfield DL, Gladyshev VN. Methods Enzymol. 2010;474C:245-254. Epub 2010
Jun 20. PubMed PMID: 20609914.
Proud sponsors of Aeromat 2012. Please join us and our customers & co-sponsors Boeing and ATI on
June 18-20, 2012
in Charlotte, North Carolina
Barium Selenite is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered.American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia)and follows applicable ASTM testing standards.Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.
Barium is a Block S, Group 2, Period 6 element. The number of electrons in each of Barium's shells is 2, 8, 18, 18, 8, 2 and its electronic configuration is [Xe] 6s2. In its elemental form barium's CAS number is 7440-39-3. The barium atom has a radius of 217.4.pm and it's Van der Waals radius is 200.pm. Barium powder can ignite spontaneously in air and when Barium compounds are water or acid soluble, they are very poisonous. Barium sulfate which is used in x-ray imaging, is highly insoluble in water, and consequently completely removed from the digestive tract. Barium is a member of the
alkaline-earth metals. It has technical applications in glass, electronics and medicine. It is also 
used in paints and colorants. Electronic coatings based on barium titanate are essential to cell phones and other microelectronics. It has long been used in medical diagnostic techniques because it makes a good x-ray contrast medium. Barium is a dopant in various fluorescent lamp coating formulas. Barium information, including Technical Data, Safety Data and its High Purity properties , research , applications and other useful facts are discussed here. Scientific facts such as the atomic structure, ionization energy , abundance on Earth , conductivity and thermal properties are included. See Barium research below. 
Selenium is a Block P, Group 16, Period 4 element. The number of electrons in each of Selenium's shells is 2, 8, 18, 6 and its electronic configuration is [Ar] 3d10 4s2 4p4. In its elemental form selenium's CAS number is 7782-49-2. The selenium atom has a radius of 116.pm and it's Van der Waals radius is 190.pm. The EPA does not classify selenium as carcinogenic, although selenium sulfide 
is a probable carcinogen. Selenates and selenites which are compounds of selenium, are highly toxic. Hydrogen selenide gas (SeH2) is the most acutely toxic compound of selenium. Selenium exhibits both photovoltaic action, where light is converted directly into electricity, and photoconductive action, where the electrical resistance decreases with increased illumination. of photocells and exposure meters for photographic use, as 
well as solar cells. Below its melting point, selenium is a p-type semiconductor and has many uses in electronic and solid-state applications. Selenium is available as metal and compounds with purities from 99% to 99.9999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Selenium was first discovered by Jons Berzelius in 1817. The origin of the name Selenium comes from the Greek word "Selênê" meaning moon. See selenium research below.
