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Strontium information, including Technical Data, Safety Data and its high purity properties, research, applications and other useful facts are discussed below. Scientific facts such as the atomic structure, ionization energy, abundance on Earth, conductivity and thermal properties are included.

Strontium has low tech applications as an additive to flares and pyrotechnics because of the bright crimson flame produced by its salts. Strontium 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. It also has many high technology applications because of its high refractive index as a titanate in glass, as a "getter" in electron tubes and as a dopant for numerous perovskite formulations to produce cathodes for oxygen generation or solid oxide fuel cells. Historically the primary use of strontium was to produce CRT glass for color television and computer tubes.

Strontium facts, including appearance, CAS #, and molecular formula and safety data, research and properties are

 

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      Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium    
      Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawerencium    


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available for many specific states, forms and shapes on the product pages listed to the left. Elemental or metallic forms include pellets, rod, wire and granules for evaporation source material purposes. Nanoparticles and nanopowders provide ultra high surface area which nanotechnology research and recent experiments demonstrate function to create new and unique properties and benefits.

Oxides are available in forms including powders and dense pellets for such uses as optical coating and thin film applications. Oxides tend to be insoluble. Fluorides are another insoluble form for uses in which oxygen is undesirable such as metallurgy, chemical and physical vapor deposition and in some optical coatings. Strontium is available in soluble forms including chlorides, nitrates and acetates. These compounds are also manufactured as solutions at specified stoichiometries.

Strontium is a Block S, Group 2, Period 5 element. The electronic configuration is [Kr] 5s2. In its elemental form strontium's CAS number is 7440-24-6. The strontium atom has a radius of 215.1.pm and it's Van der Waals radius is 200.pm.

All elemental metals, compounds and solutions may be synthesized in ultra high purity (e.g. 99.999%) for laboratory standards, advanced electronic, metallurgy and optical materials and other high technology advantages. Information is provided for stable (non-radioactive) isotopes. Organo-Metallic Strontium compounds are soluble in organic or non-aqueous solvents. See Analytical Services for information on available certified chemical and physical analysis techniques including MS-ICP, X-Ray Diffraction, PSD and Surface Area (BET) analysis.

Strontium was first discovered by A. Crawford in 1790.

French Strontium German Strontium Italian stronzio Portuguese Estrôncio Spanish estroncio Swedish Strontium

Abundance. The following table shows the abundance of strontium and each of its naturally occurring isotopes on Earth along with the atomic mass for each isotope.

Isotope
Atomic Mass
% Abundance on Earth
Sr-84
83.913425
0.56
Sr-86
85.909262
9.86
Sr-87
86.908879
7.00
Sr-88
87.905614
82.58

Safety Data. The safety data for strontium metal, nanoparticles and its compounds can vary widely depending on the form. For potential hazard information, toxicity, and road, sea and air transportation limitations, such as DOT Hazard Class, DOT Number, EU Number, NFPA Health rating and RTECS Class, please see the specific material or compound referenced in the left margin.

Ionization Energy. The ionization energy for strontium (the least required energy to release a single electron from the atom in it's ground state in the gas phase) is stated in the following table:

1st Ionization Energy
549.48 kJ mol-1
2nd Ionization Energy
1064.25 kJ mol-1
3rd Ionization Energy
4138.29 kJ mol-1

Conductivity. As to strontium's electrical and thermal conductivity, the electrical conductivity measured as to electrical resistivity @ 20 şC is 23 μΩcm and its electronegativities (or its ability to draw electrons relative to other elements) is 0.95. The thermal conductivity of strontium is 49 W m-1 K-1.

Thermal Properties. The melting point and boiling point for strontium are stated below. The following chart sets forth the heat of fusion, heat of vaporization and heat of atomization.

Heat of Fusion
9.16 kJ mol-1
Heat of Vaporization
154.4 kJ mol-1
Heat of Atomization
164.4 kJ mol-1

 
Formula Atomic Number Molecular Weight Electronegativity (Pauling) Density Melting Point
Boiling Point
Vanderwaals radius
Ionic radius Energy of first ionization
Sr 38 87.62 g.mol -1 1.0 2.6 g.cm-3 at 20 °C 769 °C 1384 °C 200.pm 0.113 nm (+2) 549.48 kJ.mol-1

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Recent Research & Development for Strontium

  • Effect of strontium and gelatin on the reactivity of alpha-tricalcium phosphate. Boanini E, Panzavolta S, Rubini K, Gandolfi M, Bigi A. Acta Biomater. 2009 Oct 8. [Epub ahead of print] PMID: 19819353 [PubMed - as supplied by publisher]

  • Vitamin K to prevent fractures in older women: systematic review and economic evaluation. Stevenson M, Lloyd-Jones M, Papaioannou D. Health Technol Assess. 2009 Sep;13(45):1-158. PMID: 19818211 [PubMed - as supplied by publisher]

  • Relationship between 3-month changes in biochemical markers of bone remodelling and changes in bone mineral density and fracture incidence in patients treated with strontium ranelate for 3 years. Bruyčre O, Collette J, Rizzoli R, Decock C, Ortolani S, Cormier C, Detilleux J, Reginster JY. Osteoporos Int. 2009 Oct 8. [Epub ahead of print] PMID: 19813043 [PubMed - as supplied by publisher]

  • [Squamous cell carcinoma of the "pure" cornea] Sivkova N. Ophthalmologe. 2009 Sep;106(9):826-8. German. PMID: 19806383 [PubMed - in process]

  • Osteoporosis and venous thromboembolism: a retrospective cohort study in the UK General Practice Research Database. Breart G, Cooper C, Meyer O, Speirs C, Deltour N, Reginster JY. Osteoporos Int. 2009 Oct 6. [Epub ahead of print] PMID: 19806285 [PubMed - as supplied by publisher]

  • Flux growth and structure of two compounds with the EuIn2P2 structure type, AIn2P2 (A = Ca and Sr), and a new structure type, BaIn2P2. Rauscher JF, Condron CL, Beault T, Kauzlarich SM, Jensen N, Klavins P, MaQuilon S, Fisk Z, Olmstead MM. Acta Crystallogr C. 2009 Oct;65(Pt 10):i69-73. Epub 2009 Sep 30. PMID: 19805864 [PubMed - in process]

  • The Stable Isotope Ratios of Marijuana. II. Strontium Isotopes Relate to Geographic Origin. West JB, Hurley JM, Dudás FO, Ehleringer JR. J Forensic Sci. 2009 Oct 5. [Epub ahead of print] PMID: 19804525 [PubMed - as supplied by publisher]

  • Synthesis and in vitro microbiological evaluation of novel 4-aryl-5-isopropoxycarbonyl-6-methyl-3,4-dihydropyrimidinones. Chitra S, Devanathan D, Pandiarajan K. Eur J Med Chem. 2009 Sep 16. [Epub ahead of print] PMID: 19800716 [PubMed - as supplied by publisher]

  • Effects of strontium ranelate, raloxifene and misoprostol on bone mineral density in ovariectomized rats. Ahmet-Camcioglu N, Okman-Kilic T, Durmus-Altun G, Ekuklu G, Kucuk M. Eur J Obstet Gynecol Reprod Biol. 2009 Sep 29. [Epub ahead of print] PMID: 19796864 [PubMed - as supplied by publisher]

  • Phase Selection and Energetics in Chiral Alkaline Earth Tartrates and Their Racemic and Meso Analogues: Synthetic, Structural, Computational, and Calorimetric Studies. Appelhans LN, Kosa M, Radha AV, Simoncic P, Navrotsky A, Parrinello M, Cheetham AK. J Am Chem Soc. 2009 Oct 1. [Epub ahead of print] PMID: 19795897 [PubMed - as supplied by publisher]

  • Bi(2+)-doped strontium borates for white-light-emitting diodes. Peng M, Wondraczek L. Opt Lett. 2009 Oct 1;34(19):2885-7. doi: 10.1364/OL.34.002885. PMID: 19794756 [PubMed - in process]

  • Physical properties of a hybrid and a nanohybrid dental light-cured resin composite. Sideridou ID, Karabela MM, Micheliou CN, Karagiannidis PG, Logothetidis S. J Biomater Sci Polym Ed. 2009;20(13):1831-44. PMID: 19793442 [PubMed - in process]

  • Pseudomorphic 2A--> 2M--> 2H phase transitions in lanthanum strontium germanate electrolyte apatites. Pramana SS, White TJ, Schreyer MK, Ferraris C, Slater PR, Orera A, Bastow TJ, Mangold S, Doyle S, Liu T, Fajar A, Srinivasan M, Baikie T. Dalton Trans. 2009 Oct 21;(39):8280-91. Epub 2009 Aug 24. PMID: 19789780 [PubMed - in process]

  • Analysis of palladium concentrations in airborne particulate matter with reductive co-precipitation, He collision gas, and ID-ICP-Q-MS. Alsenz H, Zereini F, Wiseman CL, Püttmann W. Anal Bioanal Chem. 2009 Sep 27. [Epub ahead of print] PMID: 19784830 [PubMed - as supplied by publisher]

  • Tetrazole-5-carboxylic acid based salts of earth alkali and transition metal cations. Hartdegen V, Klapötke TM, Sproll SM. Inorg Chem. 2009 Oct 5;48(19):9549-56. PMID: 19780625 [PubMed - in process]

  • Agonists and allosteric modulators of the Calcium Sensing Receptor and their therapeutic applications. Saidak Z, Brazier M, Kamel S, Mentaverri R. Mol Pharmacol. 2009 Sep 24. [Epub ahead of print] PMID: 19779033 [PubMed - as supplied by publisher]

  • Identification of the radiolytic product of hydrophobic ionic liquid [C4mim][NTf2] during removal of Sr2+ from aqueous solution. Yuan L, Xu C, Peng J, Xu L, Zhai M, Li J, Wei G, Shen X. Dalton Trans. 2009 Oct 14;(38):7873-5. Epub 2009 Aug 4. PMID: 19771346 [PubMed - in process]

  • Sources of nutrients to windward agricultural systems in pre-contact Hawai'i. Palmer MA, Graves M, Ladefoged TN, Chadwick OA, Duarte TK, Porder S, Vitousek PM. Ecol Appl. 2009 Sep;19(6):1444-53. PMID: 19769093 [PubMed - in process]

  • An emerging pollutant contributing to the cytotoxicity of MSWI ash wastes: Strontium. Huang WJ, Tang HC, Lin KL, Liao MH. J Hazard Mater. 2009 Sep 1. [Epub ahead of print] PMID: 19762147 [PubMed - as supplied by publisher]

  • Trace element accumulation in Cassiopea sp. (Scyphozoa) from urban marine environments in Australia. Templeman MA, Kingsford MJ. Mar Environ Res. 2009 Aug 12. [Epub ahead of print] PMID: 19747724 [PubMed - as supplied by publisher]

 

 

 

 

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