Calcium Fluoride activated by Europium is a light scintillator used in the detection of soft gamma rays and charged particles. Due to its small back scattering, Eu:CaF is often used for the detection of beta rays.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.
Europium is a Block F, Group 3, Period 6 element. The number of electrons in each of Europium's shells is 2, 8, 18, 25, 8, 2 and its electronic configuration is [Xe]4f7 6s2. In its elemental form europium's CAS number is 7440-53-1. The europium atom has a radius of 199.5.pm and it's Van der Waals radius is unknown. Europium is moderately toxic. Europium is utilized primarily for its unique luminescent behavior. Europium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Excitation of the Europium atom by absorption of ultra violet radiation can result in specific energy level transitions within the atom creating an emission of visible radiation.In energy efficient fluorescent lighting, Europium provides not only the necessary red, but also the blue. Several commercial blue phosphors are based on Europium. Europium was named after the continent of Europe. See Europium 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.
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]
Recent Research & Development for Europium
Sensitization of Lanthanoid Luminescence by Organic and Inorganic Ligands in Lanthanoid-Organic-Polyoxometalates.
Ritchie C, Baslon V, Moore EG, Reber C, Boskovic C.
Inorg Chem. 2011 Dec 23. [Epub ahead of print]
PMID:
22220495
[PubMed - as supplied by publisher]
Di-?-benzoato-?O,O':O';?O:O,O'-bis[aqua-bis-(benzoato-?O,O')(dimethylformamide-?O)europium(III)].
Wang Z, Zhou X.
Acta Crystallogr Sect E Struct Rep Online. 2011 Nov 1;67(Pt 11):m1579-80. Epub 2011 Oct 22.
PMID:
22219814
[PubMed - in process]
Silver Nanoparticle-Enhanced Chemiluminescence Method for Determining Naproxen Based on Europium(III)-Sensitized Ce(IV)-Na(2)S (2)O (4) Reaction.
Kamruzzaman M, Alam AM, Kim KM, Lee SH, Kim YH, Kim SH.
J Fluoresc. 2012 Jan 4. [Epub ahead of print]
PMID:
22215565
[PubMed - as supplied by publisher]
Effects of crystallization and dopant concentration on the emission behavior of TiO2:Eu nanophosphors.
Pal M, Pal U, Gracia Y Jimenez JM, Perez-Rodriguez F.
Nanoscale Res Lett. 2012 Jan 3;7(1):1. [Epub ahead of print]
PMID:
22214494
[PubMed - as supplied by publisher]
Influence of Catalyses on the Preparation of YVO(4):Eu (3+) Phosphors by the Sol-gel Methodology.
Saltarelli M, Luz PP, Matos MG, de Faria EH, Ciuffi KJ, Calefi PS, Rocha LA, Nassar EJ.
J Fluoresc. 2011 Dec 30. [Epub ahead of print]
PMID:
22205247
[PubMed - as supplied by publisher]
Selected Trace Elements in the Sacramento River, California: Occurrence and Distribution.
Taylor HE, Antweiler RC, Roth DA, Alpers CN, Dileanis P.
Arch Environ Contam Toxicol. 2011 Dec 23. [Epub ahead of print]
PMID:
22193863
[PubMed - as supplied by publisher]
A Sensitive, Homogeneous, and High-Throughput Assay for Lysine-Specific Histone Demethylases at the H3K4 Site.
Wang C, Caron M, Burdick D, Kang Z, Auld D, Hill WA, Padrós J, Zhang JH.
Assay Drug Dev Technol. 2011 Dec 22. [Epub ahead of print]
PMID:
22192306
[PubMed - as supplied by publisher]
Modelling and optimisation of preparative chromatographic purification of europium.
Ojala F, Max-Hansen M, Kifle D, Borg N, Nilsson B.
J Chromatogr A. 2012 Jan 13;1220:21-5. Epub 2011 Nov 23.
PMID:
22189296
[PubMed - in process]
Site-specific DOTA/europium-labeling of recombinant human relaxin-3 for receptor-ligand interaction studies.
Zhang WJ, Luo X, Liu YL, Shao XX, Wade JD, Bathgate RA, Guo ZY.
Amino Acids. 2011 Dec 21. [Epub ahead of print]
PMID:
22187146
[PubMed - as supplied by publisher]
Building large supramolecular nanocapsules with europium cations.
Hamacek J, Poggiali D, Zebret S, Aroussi BE, Schneider MW, Mastalerz M.
Chem Commun (Camb). 2011 Dec 19. [Epub ahead of print]
PMID:
22179299
[PubMed - as supplied by publisher]
Circularly Polarized Lanthanide Luminescence from Langmuir-Blodgett Films Formed from Optically Active and Amphiphilic Eu(III) -Based Self-Assembly Complexes.
Kitchen JA, Barry DE, Mercs L, Albrecht M, Peacock RD, Gunnlaugsson T.
Angew Chem Int Ed Engl. 2011 Dec 7. doi: 10.1002/anie.201106863. [Epub ahead of print]
PMID:
22162422
[PubMed - as supplied by publisher]
Enhancement of the Luminescence Efficiency of Europium(III) Tris(?-diketonato) Complex in Organic Media by Quaternary Ammonium Salts with Anionic Ligands.
Katano H, Uematsu K, Tsukatani T.
Anal Sci. 2011;27(12):1249.
PMID:
22156255
[PubMed - in process]
High-pressure phase transition and thermoelastic properties of europium chalcogenides.
Gupta DC, Singh KC.
J Mol Model. 2011 Nov 26. [Epub ahead of print]
PMID:
22146983
[PubMed - as supplied by publisher]
Spectrofluorimetric study of the interaction between europium(III) and moxifloxacin in micellar solution and its analytical application.
Kamruzzaman M, Alam AM, Lee SH, Ragupathy D, Kim YH, Park SR, Kim SH.
Spectrochim Acta A Mol Biomol Spectrosc. 2012 Feb;86:375-80. Epub 2011 Oct 29.
PMID:
22133700
[PubMed - in process]
Complexation of Europium(III) by Bis(dialkyltriazinyl)bipyridines in 1-Octanol.
Steppert M, Císarová I, Fanghänel T, Geist A, Lindqvist-Reis P, Panak P, Stepnicka P, Trumm S, Walther C.
Inorg Chem. 2012 Jan 2;51(1):591-600. Epub 2011 Dec 1.
PMID:
22133151
[PubMed - in process]
Photoluminescent Properties of Novel Rare Earth Organic-Inorganic Nanocomposite with TiO(2) Modified Silica via Double Crosslinking Units.
Zhao Y, Yan B.
Photochem Photobiol. 2012 Jan;88(1):21-31. doi: 10.1111/j.1751-1097.2011.01033.x. Epub 2011 Nov 29.
PMID:
22126262
[PubMed - in process]
Nonradiative deactivation of europium(iii) luminescence as a detection scheme for moisture.
Knall AC, Tscherner M, Noormofidi N, Pein A, Saf R, Mereiter K, Ribitsch V, Stelzer F, Slugovc C.
Analyst. 2011 Nov 28. [Epub ahead of print]
PMID:
22125794
[PubMed - as supplied by publisher]
Probing the metal ion selectivity in methionine aminopeptidase via changes in the luminescence properties of the enzyme bound europium ion.
Sule N, Singh RK, Zhao P, Srivastava DK.
J Inorg Biochem. 2012 Jan;106(1):84-9. Epub 2011 Sep 22.
PMID:
22112844
[PubMed - in process]
Characteristics of functionalized nano-hydroxyapatite and internalization by human epithelial cell.
Yan-Zhong Z, Yan-Yan H, Jun Z, Shai-Hong Z, Zhi-You L, Ke-Chao Z.
Nanoscale Res Lett. 2011 Nov 23;6:600.
PMID:
22108000
[PubMed - in process]
The oxidation state of europium in halide glasses.
Weber JK, Vu M, Passlick C, Schweizer S, Brown DE, Johnson CE, Johnson JA.
J Phys Condens Matter. 2011 Dec 14;23(49):495402. Epub 2011 Nov 18.
PMID:
22101252
[PubMed - in process]
In situ surface-etched bacterial spore detection using dipicolinic Acid-europium-silica nanoparticle bioreporters.
Smith CB, Anderson JE, Edwards JD, Kam KC.
Appl Spectrosc. 2011 Aug;65(8):866-75.
PMID:
21819776
[PubMed - in process]
Chain-like and dinuclear coordination polymers in lanthanide (Nd, Eu) oxochloride complexes with 2,2':6',2''-terpyridine: synthesis, XRD structure and magnetic properties.
Lhoste J, Pérez-Campos A, Henry N, Loiseau T, Rabu P, Abraham F.
Dalton Trans. 2011 Aug 5. [Epub ahead of print]
PMID:
21818485
[PubMed - as supplied by publisher]
Structural and valence changes of europium hydride induced by application of high-pressure h_{2}.
Matsuoka T, Fujihisa H, Hirao N, Ohishi Y, Mitsui T, Masuda R, Seto M, Yoda Y, Shimizu K, Machida A, Aoki K.
Phys Rev Lett. 2011 Jul 8;107(2):025501. Epub 2011 Jul 5.
PMID:
21797616
[PubMed - in process]
Li(+)- and Eu(3+)-Doped Poly(e-caprolactone)/Siloxane Biohybrid Electrolytes for Electrochromic Devices.
Fernandes M, Nobre SS, Rodrigues LC, Gonc¸alves A, Rego R, Oliveira MC, Ferreira RA, Fortunato E, Silva MM, Carlos LD, Bermudez VD.
ACS Appl Mater Interfaces. 2011 Aug 4. [Epub ahead of print]
PMID:
21774498
[PubMed - as supplied by publisher]
Site-selected luminescence of atomic europium in the solid rare gases.
Byrne O, McCaffrey JG.
J Chem Phys. 2011 Jul 14;135(2):024507.
PMID:
21766957
[PubMed - in process]
3,4,3-LI(1,2-HOPO): In vitro formation of highly stable lanthanide complexes translates into efficacious in vivo europium decorporation.
Sturzbecher-Hoehne M, Ng Pak Leung C, D'Aléo A, Kullgren B, Prigent AL, Shuh DK, Raymond KN, Abergel RJ.
Dalton Trans. 2011 Jul 15. [Epub ahead of print]
PMID:
21766096
[PubMed - as supplied by publisher]
Reversible luminescence switching of a redox-active ferrocene-europium dyad.
Tropiano M, Kilah NL, Morten M, Rahman H, Davis JJ, Beer PD, Faulkner S.
J Am Chem Soc. 2011 Aug 10;133(31):11847-9. Epub 2011 Jul 20.
PMID:
21761827
[PubMed - in process]
Tetra-aqua-(nitrato-?O,O')bis-(pyridinium-4-carboxyl-ate-?O)europium(III) dinitrate.
Zhong ZG, Song JF, Li J, Meng ZH.
Acta Crystallogr Sect E Struct Rep Online. 2011 May 1;67(Pt 5):m637. Epub 2011 Apr 29.
PMID:
21754345
[PubMed]
Chemiluminescence of the Reaction System Ce(IV) - Non-Steroidal Anti-Inflammatory Drugs Containing Europium(III) Ions and its Application to the Determination of Naproxen in Pharmaceutical Preparations and Urine.
Kaczmarek M.
J Fluoresc. 2011 Jul 13. [Epub ahead of print]
PMID:
21750890
[PubMed - as supplied by publisher]
A Novel Mechanism of V Type Zinc Inhibition of Glutamate Dehydrogenase Results from Disruption of Subunit Interactions Necessary for Efficient Catalysis.
Bailey J, Powell L, Sinanan L, Neal J, Li M, Smith T, Bell E.
FEBS J. 2011 Jul 12. doi: 10.1111/j.1742-4658.2011.08240.x. [Epub ahead of print]
PMID:
21749647
[PubMed - as supplied by publisher]
Immunological aspects of allogeneic and autologous mesenchymal stem cell therapies.
Hoogduijn MJ, Korevaar SS, Engela AU, Weimar W, Baan CC.
Hum Gene Ther. 2011 Jul 6. [Epub ahead of print]
PMID:
21732766
[PubMed - as supplied by publisher]
A new rhombohedral modification of EuNi(5)In.
Bigun I, Smetana V, Kalychak Y.
Acta Crystallogr C. 2011 Jul;67(Pt 7):i42-i44. Epub 2011 Jun 23.
PMID:
21727613
[PubMed - in process]
Towards libraries of luminescent lanthanide complexes and labels from generic synthons.
Starck M, Kadjane P, Bois E, Darbouret B, Incamps A, Ziessel R, Charbonnière LJ.
Chemistry. 2011 Aug 8;17(33):9164-79. doi: 10.1002/chem.201100390. Epub 2011 Jul 1.
PMID:
21726007
[PubMed - in process]
Red-luminescent europium (III) doped silica nanoshells: synthesis, characterization, and their interaction with HeLa cells.
Yang J, Sandoval S, Alfaro JG, Aschemeyer S, Liberman A, Martin DT, Makale M, Kummel AC, Trogler WC.
J Biomed Opt. 2011 Jun;16(6):066012.
PMID:
21721813
[PubMed - as supplied by publisher]
Europium-doped amorphous calcium phosphate porous nanospheres: preparation and application as luminescent drug carriers.
Chen F, Zhu YJ, Zhang KH, Wu J, Wang KW, Tang QL, Mo XM.
Nanoscale Res Lett. 2011 Jan 12;6(1):67.
PMID:
21711603
[PubMed - in process]
New Nanomedicine Approaches Using Gold-thioguanine Nanoconjugates as Metallo-ligands.
Sleightholm L, Zambre A, Chanda N, Afrasiabi Z, Katti K, Kannan R.
Inorganica Chim Acta. 2011 Jun 15;372(1):333-339.
PMID:
21709763
[PubMed]
Determination of diethylstilbestrol based on biotin-streptavidin-amplified time-resolved fluoro-immunoassay.
Du L, Cheng S, Wang S.
Luminescence. 2011 Jun 22. doi: 10.1002/bio.1320. [Epub ahead of print]
PMID:
21695770
[PubMed - as supplied by publisher]
Rational Design of a Ternary Supramolecular System: Self-Assembly of Pentanuclear Lanthanide Helicates.
Aroussi BE, Zebret S, Besnard C, Perrottet P, Hamacek J.
J Am Chem Soc. 2011 Jul 20;133(28):10764-10767. Epub 2011 Jun 27.
PMID:
21688784
[PubMed - as supplied by publisher]
Two-photon induced responsive f-f emissive detection of Cyclin A with a europium-chelating peptide.
Kong HK, Chadbourne FL, Law GL, Li H, Tam HL, Cobb SL, Lau CK, Lee CS, Wong KL.
Chem Commun (Camb). 2011 Jul 28;47(28):8052-4. Epub 2011 Jun 16.
PMID:
21681288
[PubMed - in process]
Analysis of citrate in low-volume seminal fluid samples using a time-gated measurement of europium luminescence.
Pal R, Beeby A, Parker D.
J Pharm Biomed Anal. 2011 Sep 10;56(2):352-8. Epub 2011 May 20.
PMID:
21680129
[PubMed - in process]
Proud sponsors of Aeromat 2012. Please join us and our customers & co-sponsors Boeing and ATI on
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Calcium Fluoride activated by Europium is a light scintillator used in the detection of soft gamma rays and charged particles. Due to its small back scattering, Eu:CaF is often used for the detection of beta rays.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. 
Europium is a Block F, Group 3, Period 6 element. The number of electrons in each of Europium's shells is 2, 8, 18, 25, 8, 2 and its electronic configuration is [Xe]4f7 6s2. In its elemental form europium's CAS number is 7440-53-1. The europium atom has a radius of 199.5.pm and it's Van der Waals radius is unknown. Europium is moderately toxic. Europium is utilized primarily for its unique luminescent behavior. Europium is available as metal and
compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Excitation of the Europium atom by absorption of ultra violet radiation can result in specific energy level transitions within the atom creating an emission of visible radiation.In energy efficient fluorescent lighting, Europium provides not only the necessary red, but also the blue. Several commercial blue phosphors are based on Europium. Europium was named after the continent of Europe. See Europium research below. 
