Calcium Selenide 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.
Calcium is a Block S, Group 2, Period 4 element. The number of electrons in each of Calcium's shells is 2, 8, 8, 2 and its electronic configuration is [Ar] 4s2. In its elemental form calcium's CAS number is 7440-70-2. The calcium atom has a radius of 197.4.pm and it's Van der Waals radius is 200.pm. Calcium is a reactive, soft metal. Calcium is a member of the alkaline earth elements. Calcium is an essential metal for living organisms and is non-toxic. Its primary commercial application is in its metallic form as a reducing agent in the production of other metals. In iron and steel production it is added to the melt to remove oxygen, sulfur and carbon. The various calcium compounds have wide application in food, pharmaceutical and cosmetics. It is used in small doses in alloys of copper and beryllium. It is used in dietary supplements and food production because it has been shown to improve bone and dental health. Calcium information, including Technical Data, Safety Data and its High Purity properties, research, applications and other useful facts are discussed here. Calcium was first discovered by Sir Humphrey Davy in 1808. The name calcium originates from the Latin word 'calics' meaning lime. See Calcium 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.
American Elements semi conducting materials are crystal structures produced from ultra high purity starting materials synthesized by our high purity production facility which includes several large electric muffle furnaces, a tube furnace for hydrogen reduction, 50 gallon glass-lined Pfaudler reactors supported by our analytical laboratory containing X-ray diffraction, SEM, AA, BET surface area, and ICP Spectrometry for trace metals analysis. See a discussion of American Elements Ultra High Purity and Analytical capabilities. See Crystal Growth for processes used to fabricate semiconductor materials, which include:
Crystal "pulling" by the Czochaiski method for production of semiconductor materials
Flux growth and gradient freeze
Directional solidification of fluorites using both the Bridgman-Stockbarger and float zoning techniques
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.
Prevention of preterm labour: 2011 update on tocolysis.
Hubinont C, Debieve F.
J Pregnancy. 2011;2011:941057. Epub 2011 Nov 15.
PMID:
22175022
[PubMed - in process]
Efficient conversion of astrocytes to functional midbrain dopaminergic neurons using a single polycistronic vector.
Addis RC, Hsu FC, Wright RL, Dichter MA, Coulter DA, Gearhart JD.
PLoS One. 2011;6(12):e28719. Epub 2011 Dec 9.
PMID:
22174877
[PubMed - in process]
Dysferlin Interacts with Histone Deacetylase 6 and Increases alpha-Tubulin Acetylation.
Di Fulvio S, Azakir BA, Therrien C, Sinnreich M.
PLoS One. 2011;6(12):e28563. Epub 2011 Dec 8.
PMID:
22174839
[PubMed - in process]
Regulation of Brain-Derived Neurotrophic Factor Exon IV Transcription through Calcium Responsive Elements in Cortical Neurons.
Zheng F, Zhou X, Luo Y, Xiao H, Wayman G, Wang H.
PLoS One. 2011;6(12):e28441. Epub 2011 Dec 9.
PMID:
22174809
[PubMed - in process]
Adeno-associated virus-mediated rescue of the cognitive defects in a mouse model for angelman syndrome.
Daily JL, Nash K, Jinwal U, Golde T, Rogers J, Peters MM, Burdine RD, Dickey C, Banko JL, Weeber EJ.
PLoS One. 2011;6(12):e27221. Epub 2011 Dec 9.
PMID:
22174738
[PubMed - in process]
Nifedipine Protects INS-1 ß-Cell from High Glucose-Induced ER Stress and Apoptosis.
Wang Y, Gao L, Li Y, Chen H, Sun Z.
Int J Mol Sci. 2011;12(11):7569-80. Epub 2011 Nov 7.
PMID:
22174617
[PubMed - in process]
Chitosan Fibers Modified with HAp/ß-TCP Nanoparticles.
Wawro D, Pighinelli L.
Int J Mol Sci. 2011;12(11):7286-300. Epub 2011 Oct 25.
PMID:
22174598
[PubMed - in process]
Mild and moderate pre-dialysis chronic kidney disease is associated with increased coronary artery calcium.
Roy SK, Cespedes A, Li D, Choi TY, Budoff MJ.
Vasc Health Risk Manag. 2011;7:719-24. Epub 2011 Dec 2.
PMID:
22174582
[PubMed - in process]
Ambulatory blood pressure response to triple therapy with an angiotensin-receptor blocker (ARB), calcium-channel blocker (CCB), and HCTZ versus dual therapy with an ARB and HCTZ.
Duprez D, Ferdinand K, Purkayastha D, Samuel R, Wright R.
Vasc Health Risk Manag. 2011;7:701-8. Epub 2011 Nov 24.
PMID:
22174580
[PubMed - in process]
Leukotriene E4 Activates Human Th2 Cells for Exaggerated Proinflammatory Cytokine Production in Response to Prostaglandin D2.
Xue L, Barrow A, Fleming VM, Hunter MG, Ogg G, Klenerman P, Pettipher R.
J Immunol. 2011 Dec 14. [Epub ahead of print]
PMID:
22174450
[PubMed - as supplied by publisher]
Association Between Depression and Vascular Disease in Systemic Lupus Erythematosus.
Greco CM, Li T, Sattar A, Kao AH, Danchenko N, Edmundowicz D, Sutton-Tyrrell K, Tracy RP, Kuller LH, Manzi S.
J Rheumatol. 2011 Dec 15. [Epub ahead of print]
PMID:
22174200
[PubMed - as supplied by publisher]
A rare electrocardiographic manifestation of a rare form of multiple electrolyte disturbances: hyperparathyroid crisis.
Hajsadeghi S, Chitsazan M, Miresmail SJ.
Acta Med Iran. 2011 Dec;49(12):824-7.
PMID:
22174173
[PubMed - in process]
A cross-sectional study to determine the prevalence of calcium metabolic disorder in malignant childhood cancers in patients admitted to the pediatric ward of vali-asr hospital.
Moayeri H, Oloomi Z, Sambo SA.
Acta Med Iran. 2011 Dec;49(12):818-23.
PMID:
22174172
[PubMed - in process]
Study to Evaluate Two Dosage Regimens of Vitamin D through an Academic Year in Middle School Girls: a Randomized Trial.
Shakiba M, Ghadir M, Nafei Z, Akhavan Karbasi S, Lotfi MH, Shajari A.
Acta Med Iran. 2011 Dec;49(12):780-3.
PMID:
22174164
[PubMed - in process]
Oxidative stress due to aluminium exposure induces eryptosis which is prevented by erythropoietin.
Vota DM, Crisp RL, Nesse AB, Vittori DC.
J Cell Biochem. 2011 Dec 15. doi: 10.1002/jcb.24026. [Epub ahead of print]
PMID:
22174104
[PubMed - as supplied by publisher]
Parameters Affecting the Efficient Delivery of Mesoporous Silica Nanoparticle Materials and Gold Nanorods into Plant Tissues by the Biolistic Method.
Martin-Ortigosa S, Valenstein JS, Sun W, Moeller L, Fang N, Trewyn BG, Lin VS, Wang K.
Small. 2011 Dec 16. doi: 10.1002/smll.201101294. [Epub ahead of print]
PMID:
22174078
[PubMed - as supplied by publisher]
Cell Excitability Necessary for Male Mating Behavior in Caenorhabditis elegans is Coordinated by Interactions Between BK and EAG Family K+ Channels.
Leboeuf B, Garcia LR.
Genetics. 2011 Dec 14. [Epub ahead of print]
PMID:
22174070
[PubMed - as supplied by publisher]
Dantrolene rescues arrhythmogenic RYR2 defect in a patient-specific stem cell model of catecholaminergic polymorphic ventricular tachycardia.
Jung CB, Moretti A, Schnitzler MM, Iop L, Storch U, Bellin M, Dorn T, Ruppenthal S, Pfeiffer S, Goedel A, Dirschinger RJ, Seyfarth M, Lam JT, Sinnecker D, Gudermann T, Lipp P, Laugwitz KL.
EMBO Mol Med. 2011 Dec 15. doi: 10.1002/emmm.201100194. [Epub ahead of print]
PMID:
22174035
[PubMed - as supplied by publisher]
Vitamin D Regulates Anti-Mullerian Hormone Expression in Granulosa Cells of the Hen.
Wojtusik J, Johnson PA.
Biol Reprod. 2011 Dec 14. [Epub ahead of print]
PMID:
22174023
[PubMed - as supplied by publisher]
Mechanistic involvement of the calpain-calpastatin system in Alzheimer neuropathology.
Higuchi M, Iwata N, Matsuba Y, Takano J, Suemoto T, Maeda J, Ji B, Ono M, Staufenbiel M, Suhara T, Saido TC.
FASEB J. 2011 Dec 15. [Epub ahead of print]
PMID:
22173972
[PubMed - as supplied by publisher]
Toenail selenium status and the risk of Barrett's esophagus: the Netherlands Cohort Study.
Steevens J, Schouten LJ, Driessen AL, Huysentruyt CJ, Keulemans YC, Goldbohm RA, van den Brandt PA.
Cancer Causes Control. 2010 Oct 10. [Epub ahead of print]PMID: 20936529 [PubMed - as supplied by publisher]Related citations
Promotion of Growth in Mungbean (Phaseolus aureus Roxb.) by Selenium is Associated with Stimulation of Carbohydrate Metabolism.
Malik JA, Kumar S, Thakur P, Sharma S, Kaur N, Kaur R, Pathania D, Bhandhari K, Kaushal N, Singh K, Srivastava A, Nayyar H.
Biol Trace Elem Res. 2010 Oct 9. [Epub ahead of print]PMID: 20936436 [PubMed - as supplied by publisher]Related citations
Transition metal chemistry of cyclodiphosphanes containing phosphine and amide-phosphine functionalities: Formation of a stable dipalladium(II) complex containing a Pd-P s-bond.
Balakrishna MS, Venkateswaran R, Mague JT.
Dalton Trans. 2010 Oct 8. [Epub ahead of print]PMID: 20936211 [PubMed - as supplied by publisher]Related citations
Associations between blood metals and fecundity among women residing in New York State.
Bloom MS, Louis GM, Sundaram R, Kostyniak PJ, Jain J.
Reprod Toxicol. 2010 Oct 6. [Epub ahead of print]PMID: 20933593 [PubMed - as supplied by publisher]Related citations
The protective role of selenium in recalcitrant Acer saccharium L. seeds subjected to desiccation.
Pukacka S, Ratajczak E, Kalemba E.
J Plant Physiol. 2010 Oct 6. [Epub ahead of print]PMID: 20933296 [PubMed - as supplied by publisher]Related citations
Trace element concentrations in nesting flatback turtles (Natator depressus) from Curtis Island, Queensland, Australia.
Ikonomopoulou MP, Olszowy H, Limpus C, Francis R, Whittier J.
Mar Environ Res. 2010 Sep 25. [Epub ahead of print]PMID: 20933265 [PubMed - as supplied by publisher]Related citations
Correlation between serum selenium level and febrile seizures.
Mahyar A, Ayazi P, Fallahi M, Javadi A.
Pediatr Neurol. 2010 Nov;43(5):331-4.PMID: 20933176 [PubMed - in process]Related citations
Anti-Tumor Activity of Aloe vera Against DMBA/Croton Oil-Induced Skin Papillomagenesis in Swiss Albino Mice.
Saini M, Goyal PK, Chaudhary G.
J Environ Pathol Toxicol Oncol. 2010;29(2):127-35.PMID: 20932247 [PubMed - in process]Related citations
Aluminosilicate Relatives: Chalcogenoaluminogermanates Rb(3)(AlQ(2))(3)(GeQ(2))(7) (Q = S, Se).
Rothenberger A, Shafaei-Fallah M, Kanatzidis MG.
Inorg Chem. 2010 Oct 8. [Epub ahead of print]PMID: 20932019 [PubMed - as supplied by publisher]Related citations
A Nutrient Approach to Prostate Cancer Prevention: The Selenium and Vitamin E Cancer Prevention Trial (SELECT).
Dunn BK, Richmond ES, Minasian LM, Ryan AM, Ford LG.
Nutr Cancer. 2010 Oct;62(7):896-918.PMID: 20924966 [PubMed - in process]Related citations
Serum levels of selenium in patients with breast cancer before and after treatment of external beam radiotherapy.
Franca CA, Nogueira CR, Ramalho A, Carvalho AC, Vieira SL, Penna AB.
Ann Oncol. 2010 Oct 5. [Epub ahead of print]PMID: 20924074 [PubMed - as supplied by publisher]Related citations
Kenji Soda--researching enzymes with the spirit of an alpinist.
Yoshimura T, Mihara H, Ohshima T, Tanizawa K.
J Biochem. 2010 Oct;148(4):371-9.PMID: 20924059 [PubMed - in process]Related citations
Inhibitory effect of arsenic on aerobic gut flora in rat.
Choudhry ZK, Misbahuddin M, Hosain AK, Saleh AA.
Bangladesh Med Res Counc Bull. 2009 Dec;35(3):79-83.PMID: 20922909 [PubMed - in process]Related citations
[Endemic and biogeochemical features of the territory of Chuvash Republic]
[No authors listed]
Vestn Ross Akad Med Nauk. 2010;(8):40-6. Russian. PMID: 20922843 [PubMed - in process]Related citations
Interaction of uranyl with Se(IV) and Se(VI) in aqueous acid solutions by means of capillary electrophoresis.
Sladkov V.
Electrophoresis. 2010 Oct 4. [Epub ahead of print]PMID: 20922762 [PubMed - as supplied by publisher]Related citations
Ensemble Modeling Coupled with Six Element Concentrations in Human Blood for Cancer Diagnosis.
Chen H, Tan C, Wu T.
Biol Trace Elem Res. 2010 Oct 5. [Epub ahead of print]PMID: 20922500 [PubMed - as supplied by publisher]Related citations
Use of dietary vitamin E and selenium (Se) to increase the shelf life of modified atmosphere packaged light lamb meat.
Ripoll G, Joy M, Muñoz F.
Meat Sci. 2010 Sep 18. [Epub ahead of print]PMID: 20920835 [PubMed - as supplied by publisher]Related citations
Impacts of maternal selenium and nutritional level on growth, adiposity, and glucose tolerance in female offspring in sheep.
Vonnahme KA, Luther JS, Reynolds LP, Hammer CJ, Carlson DB, Redmer DA, Caton JS.
Domest Anim Endocrinol. 2010 Nov;39(4):240-8. Epub 2010 Jul 25.PMID: 20920781 [PubMed - in process]Related citations
Mutations disrupting selenocysteine formation cause progressive cerebello-cerebral atrophy.
Agamy O, Ben Zeev B, Lev D, Marcus B, Fine D, Su D, Narkis G, Ofir R, Hoffmann C, Leshinsky-Silver E, Flusser H, Sivan S, Söll D, Lerman-Sagie T, Birk OS.
Am J Hum Genet. 2010 Oct 8;87(4):538-44.PMID: 20920667 [PubMed - in process]Related citations
Developmental toxicity of selenium to Dolly Varden char (Salvelinus malma).
McDonald BG, Debruyn AM, Elphick JR, Davies M, Bustard D, Chapman PM.
Environ Toxicol Chem. 2010 Aug 3. [Epub ahead of print]PMID: 20891017 [PubMed - as supplied by publisher]Related citations
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
Calcium Selenide 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.
Calcium is a Block S, Group 2, Period 4 element. The number of electrons in each of Calcium's shells is 2, 8, 8, 2 and its electronic configuration is [Ar] 4s2. In its elemental form calcium's CAS number is 7440-70-2. The calcium atom has a radius of 197.4.pm and it's Van der Waals radius is 200.pm. Calcium is a reactive, soft metal. Calcium is a member of the alkaline earth elements. Calcium is an essential metal for living organisms and is non-toxic. Its primary commercial application is in its metallic form as a reducing 
agent in the production of other metals. In iron and steel production it is added to the melt to remove oxygen, sulfur and carbon. The various 
calcium compounds have wide application in food, pharmaceutical and cosmetics. It is used in small doses in alloys of copper and beryllium. It is used in dietary supplements and food production because it has been shown to improve bone and dental health. Calcium information, including Technical Data, Safety Data and its High Purity properties, research, applications and other useful facts are discussed here. Calcium was first discovered by Sir Humphrey Davy in 1808. The name calcium originates from the Latin word 'calics' meaning lime. See Calcium 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.
