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Strontium Chromate from Austria and France
Strontium Chromate from Austria and France Investigation Nos. 731-TA-1422-1423 (Preliminary) Publication 4836 October 2018 U.S. International Trade Commission Washington, DC 20436 U.S. International Trade Commission COMMISSIONERS David S. Johanson, Chairman Irving A. Williamson Meredith M. Broadbent Rhonda K. Schmidtlein Jason E. Kearns Catherine DeFilippo Director of Operations Staff assigned Kristina Lara, Investigator Samantha DeCarlo, Industry Analyst Tana von Kessler Economist Jennifer Brinckhaus, Accountant KaDeadra McNealy, Statistician David Goldfine, Attorney Douglas Corkran, Supervisory Investigator Address all communications to Secretary to the Commission United States International Trade Commission Washington, DC 20436 U.S. International Trade Commission Washington, DC 20436 www.usitc.gov Strontium Chromate from Austria and France Investigation Nos. 731-TA-1422-1423 (Preliminary) Publication 4836 October 2018 CONTENTS Page ....................................................................................................................... 1 ........................................................................................................ 3 Introduction ................................................................................................................ I‐1 Background ................................................................................................................................ I‐1 Statutory criteria and organization of the report .................................................................... -
Strontium-90 and Strontium-89: a Review of Measurement Techniques in Environmental Media
STRONTIUM-90 AND STRONTIUM-89: A REVIEW OF MEASUREMENT TECHNIQUES IN ENVIRONMENTAL MEDIA Robert J. Budnitz Lawrence Berkeley Laboratory University of California Berkeley, CA 91*720 1. IntroiUiction 2. Sources of Enivronmental Radiostrontium 3. Measurement Considerations a. Introduction b. Counting c. •»Sr/"Sr Separation 4. Chemical Techniques a. Air b. Water c. Milk d. Other Media e. Yttrium Recovery after Ingrowth f. Interferences S- Calibration Techniques h. Quality Control 5. Summary and Conclusions 6. Acknowli'J.jnent 7. References -NOTICE- This report was prepared as an account of worK sponsored by the United States Government. Neither the United States nor the United Slates Atomic Energy Commission, nor any of their employees, nor any of their contractors, subcontractors, or their employees, makes any wananty, express or implied, or asjumes any legal liabili:y or responsibility for the accuracy, com pleteness or usefulness of any Information, apparatus, J product or process disclosed, or represents that its use I would not infringe privately owned rights. Mmh li\ -1- 1. INTRODUCTION There are only two radioactive isotopes SrflO of strontium of significance in radiological measurements in the environment: strontium-89 Avg.jS energy 196-1 k«V and strontium-90. 100 Strontium-90 is the more significant from the point of view of environmental impact. 80 Energy keV 644 This is due mostly to its long half-life % Emission 100 (28.1 years). It is a pure beta emitter with 60 Typ* of only one decay mode, leading to yttrium-90 •mission by emission of a negative beta with HUBX * 40 h S46 keV. -
PUBLIC HEALTH STATEMENT Strontium CAS#: 7440-24-6
PUBLIC HEALTH STATEMENT Strontium CAS#: 7440-24-6 Division of Toxicology April 2004 This Public Health Statement is the summary External exposure to radiation may occur from chapter from the Toxicological Profile for natural or man-made sources. Naturally occurring strontium. It is one in a series of Public Health sources of radiation are cosmic radiation from space Statements about hazardous substances and their or radioactive materials in soil or building materials. health effects. A shorter version, the ToxFAQs™, is Man-made sources of radioactive materials are also available. This information is important found in consumer products, industrial equipment, because this substance may harm you. The effects atom bomb fallout, and to a smaller extent from of exposure to any hazardous substance depend on hospital waste and nuclear reactors. the dose, the duration, how you are exposed, personal traits and habits, and whether other If you are exposed to strontium, many factors chemicals are present. For more information, call determine whether you’ll be harmed. These factors the ATSDR Information Center at 1-888-422-8737. include the dose (how much), the duration (how _____________________________________ long), and how you come in contact with it. You must also consider the other chemicals you’re This public health statement tells you about exposed to and your age, sex, diet, family traits, strontium and the effects of exposure. lifestyle, and state of health. The Environmental Protection Agency (EPA) identifies the most serious hazardous waste sites in 1.1 WHAT IS STRONTIUM? the nation. These sites make up the National Priorities List (NPL) and are the sites targeted for Strontium is a natural and commonly occurring long-term federal cleanup activities. -
Electrochemical Separation and Purification of Yttrium-86
Radiochim. Acta 90, 225–228 (2002) by Oldenbourg Wissenschaftsverlag, München Electrochemical separation and purification of yttrium-86 By G. Reischl1,F.Rösch2 and H.-J. Machulla1 ,∗ 1 PET-Center, Division of Radiopharmacy, University Hospital Tübingen, D-72076 Tübingen, Germany 2 Institute of Nuclear Chemistry, University of Mainz, D-55099 Mainz, Germany (Received July 5, 2001; accepted in revised form October 24, 2001) Yttrium-86 / Electrolytic purification / radioactive rare earth nuclides onto a small tungsten cath- Electrochemical separation / Y-86 labeling ode was described in 1974 [6]. Recently, the electrochemical deposition of radionuclides of superheavy elements in de- pendence on electrode material and deposition potential was Summary. For quantitative determination of in vivo dosime- investigated [7]. An electrochemical method, based on a pro- try of 90Y-labeled radiotherapeuticals by means of PET, the cedure developed at Mainz [8, 9] to isolate 90Sr from a mix- positron emitting analogue yttrium-86 was produced at a low ture of 90Yand90Sr (c.a.) electrochemically, appeared very 86 86 energy (“medical”) cyclotron via the known Sr(p, n) Y 86 86 promising for isolating and purifying Y. reaction. Using 200 mg of SrCO3 (enrichment 95.6%) and protons of 15.1 MeV energy, average yields of 86Y of 48 ± 8MBq/µA h were produced. After dissolution of 86 86 Experimental SrCO3 in 3 ml of 0.6 N HNO3, Y was deposited in a simple and highly efficient electrochemical two-step procedure onto Materials a platinum cathode at 450 mA (= 20 mA/cm2). The isotope was finally removed from the electrode by 100–300 µlof Strontium-86 was supplied by Chemotrade, Germany, with . -
Strontium Carbonate Solubility Data in Aqueous Mixtures of Monoethyleneglycol Under a Carbon Dioxide Atmosphere
Brazilian Journal ISSN 0104-6632 of Chemical Printed in Brazil www.scielo.br/bjce Engineering Vol. 35, No. 02, pp. 395 - 402, April - June, 2018 dx.doi.org/10.1590/0104-6632.20180352s20160355 STRONTIUM CARBONATE SOLUBILITY DATA IN AQUEOUS MIXTURES OF MONOETHYLENEGLYCOL UNDER A CARBON DIOXIDE ATMOSPHERE Deborah C. de Andrade1,*, Naíra S. de A. Maniçoba1, Rony O. Sant'ana1, Fedra A.V. Ferreira1, Camila S. Figueiredo2, Jailton F. Nascimento2, Leonardo S. Pereira2 and Osvaldo Chiavone-Filho1 1UFRN. Campus Universitário. Departamento de Engenharia Química. Lagoa Nova. Natal – RN – Brazil, ZIP 59066-800. 2PETROBRAS/CENPES/PDEP/TPP. Av. Horácio Macedo, 950 – Cidade Universitária - Ilha do Fundão. Rio de Janeiro – RJ – Brazil, ZIP 219141-915. (Submitted: June 1, 2016; Revised: March 20, 2017; Accepted: April 5, 2017) Abstract - In order to inhibit natural gas hydrate formation, monoethyleneglycol (MEG) is usually injected into producing well heads. The MEG regeneration process is continuously performed at the platform. Scaling problems usually occur due to the presence of chlorides and carbonates. This work presents salt solubility data for the aqueous system with strontium carbonate, MEG and carbon dioxide. A specific analytical method was developed. Thus, experimental data for strontium carbonate (SrCO3) solubility at various carbon dioxide pressures are reported. Solubilities of SrCO3 in water were measured from 760 to 1610 mmHg at 278.15. 288.15. 298.15 and 323.15 K. For the mixed solvent (ms) conditions, solubilities were measured at 298.15 K and four isobars, i.e., 760, 1210, 1410 and 1520 mmHg. Experimental data were correlated and demonstrated to be accurate for thermodynamic modeling and process simulation. -
Chemistry of Strontium in Natural Water
Chemistry of Strontium in Natural Water GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1496 This water-supply paper was printed as separate chapters A-D UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1963 UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL SURVEY Thomas B. Nolan, Director The U.S. Geological Survey Library has cataloged this publication as follows: U.S. Geological Survey. Chemistry of strontium in natural water. Washington, U.S. Govt. Print. Off., 1962. iii, 97 p. illus., diagrs., tables. 24 cm. (Its Water-supply paper 1496) Issued as separate chapters A-D. Includes bibliographies. 1. Strontium. 2. Water-Analysis. I. Title. (Series) CONTENTS [The letters in parentheses preceding the titles are those used to designate the separate chapters] Page (A) A survey of analytical methods for the determination of strontium in natural water, by C. Albert Horr____________________________ 1 (B) Copper-spark method for spectrochemical determination of strontirm in water, by Marvin W. Skougstad-______-_-_-_--_~__-___-_- 19 (C) Flame photometric determination of strontium in natural water, by C. Albert Horr_____._____._______________... 33 (D) Occurrence and distribution of strontium in natural water, by Margin W. Skougstad and C. Albert Horr____________.___-._-___-. 55 iii A Survey of Analytical Methods fc r The Determination of Strontium in Natural Water By C. ALBERT HORR CHEMISTRY OF STRONTIUM IN NATURAL rVATER GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1496-A This report concerns work done on behalf of the U.S. Atomic Energy Commission and is published with the permission of the Commission UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1959 UNITED STATES DEPARTMENT OF THE INTERIOR FRED A. -
Strontium Carbonate
Safety data sheet acc. to Safe Work Australia - Code of Practice Strontium carbonate ROTI®METIC 99,998 % (4N8) article number: 5376 date of compilation: 2017-06-06 Version: GHS 1.1 en Revision: 2021-03-04 Replaces version of: 2017-06-06 Version: (GHS 1) SECTION 1: Identification of the substance/mixture and of the company/ undertaking 1.1 Product identifier Identification of the substance Strontium carbonate ROTI®METIC 99,998 % (4N8) Article number 5376 EC number 216-643-7 CAS number 1633-05-2 1.2 Relevant identified uses of the substance or mixture and uses advised against Relevant identified uses: Laboratory chemical Laboratory and analytical use Uses advised against: Do not use for products which come into contact with foodstuffs. Do not use for private purposes (household). 1.3 Details of the supplier of the safety data sheet Carl Roth GmbH + Co KG Schoemperlenstr. 3-5 D-76185 Karlsruhe Germany Telephone:+49 (0) 721 - 56 06 0 Telefax: +49 (0) 721 - 56 06 149 e-mail: [email protected] Website: www.carlroth.de Competent person responsible for the safety data :Department Health, Safety and Environment sheet: e-mail (competent person): [email protected] 1.4 Emergency telephone number Name Street Postal Telephone Website code/city NSW Poisons Information Centre Hawkesbury Road 2145 West- 131126 Childrens Hospital mead, NSW SECTION 2: Hazards identification 2.1 Classification of the substance or mixture Classification acc. to GHS This substance does not meet the criteria for classification. 2.2 Label elements Labelling not required Australia (en) Page 1 / 11 Safety data sheet acc. -
Strontium Carbonate – All Grades, Including: A, B, C, D, DF, SF, FC, and F SYNONYMS: Precipitated Strontium Carbonate Carbonic Acid, Strontium Salt
CHEMICAL PRODUCTS CORPORATION SDS No. 172 Revision date May 2015 GHS SAFETY DATA SHEET Page 1 of 7 Pages 1. IDENTIFICATION Product Name: Strontium Carbonate – All Grades, including: A, B, C, D, DF, SF, FC, and F SYNONYMS: Precipitated Strontium Carbonate Carbonic Acid, Strontium salt Industrial uses recommended: • Manufacture of pyrotechnical products • Use in welding electrode coating • Glass industry • Manufacture of glazes, frits and enamels • Manufacture of ceramic materials • Manufacture of electro-ceramic materials • Manufacture of other strontium compounds • Use in zinc electrolysis • Professional use in pyrotechnical products Industrial uses advised against: None. Molecular formula - SrCO 3 CAS No. 1633-05-2 SUPPLIER: Chemical Products Corporation 102 Old Mill Road SE P.O. Box 2470 Cartersville, Georgia 30120 General Information: 770-382-2144 Transportation Emergency: CHEMTREC: 800-424-9300 2. HAZARDS IDENTIFICATION Classification of the substance or mixture Not a hazardous substance or mixture based on GHS criteria. GHS Label elements, including precautionary statements Not a hazardous substance or mixture. Chemical Products Corporation SDS No. 172 Page 2 of 8 Pages Strontium Carbonate, All Grades Hazards not covered by GHS – - Product dust may be irritating to eyes, skin and respiratory system. - Possible risk of irreversible effects through inhalation. - Risk of pulmonary overload (respirable particulates). 3. COMPOSITION/INFORMATION ON INGREDIENTS Strontium carbonate, CAS No. : 1633-05-2; Concentration : >= 96.0 % Barium carbonate, CAS-No. : 513-77-9; Concentration : <= 2.5 % 4. FIRST AID MEASURES If inhaled Move to fresh air. - If symptoms persist, call a physician. In case of eye contact Rinse thoroughly with plenty of water, also under the eyelids. -
Nanoscale Effects of Strontium on Calcite Growth: a Baseline for Understanding Biomineralization in the Absence of Vital Effects
Nanoscale Effects of Strontium on Calcite Growth: A Baseline for Understanding Biomineralization in the Absence of Vital Effects Darren Scott Wilson Thesis submitted to the Faculty of the Virginia Polytechnic Institute and State University in partial fulfillment of the requirements for the degree of Master of Science in Geological Sciences Patricia M. Dove, Chair J. Donald Rimstidt James. J. De Yoreo May 8, 2003 Blacksburg, Virginia Keywords: Biomineralization, Calcite, Strontium, Growth, Atomic Force Microscopy Copyright 2003, Darren Scott Wilson Nanoscale Effects of Strontium on Calcite Growth: A Baseline for Understanding Biomineralization in the Absence of Vital Effects Darren Scott Wilson (ABSTRACT) This study uses in situ atomic force microscopy (AFM) to directly observe the atomic scale effects of Sr on the monomolecular layer growth of abiotic calcite. These insights are coupled with quantitative measurements of the kinetics and thermodynamics of growth to determine the direction-specific effects of Sr on the positive and negative surface coordination environments that characterize calcite step edges. Low concentrations of strontium enhance calcite growth rate through changes in kinetics. A new conceptual model is introduced to explain this behavior. Higher concentrations of strontium inhibit and ultimately stop calcite growth by a step blocking mechanism. The critical supersaturation required to initiate growth (s*) increases with increasing levels of strontium. At higher supersaturations, strontium causes growth rates to increase to levels greater than those for the pure system. The step blocking model proposed by Cabrera and Vermilyea in 1958 does not predict the experimental data reported in this study because the dependence of s* upon strontium concentration is not the same for all supersaturations. -
Strontium Chromate from Austria and France (Final)
Strontium Chromate from Austria and France Investigation Nos. 731-TA-1422 and 731-TA-1423 (Final) Publication 4992 November 2019 U.S. International Trade Commission Washington, DC 20436 U.S. International Trade Commission COMMISSIONERS David S. Johanson, Chairman Rhonda K. Schmidtlein Jason E. Kearns Randolph J. Stayin Amy A. Karpel Catherine DeFilippo Director of Operations Staff assigned Christopher S. Robinson, Investigator Samuel Goodman, Industry Analyst Carlos Payan, Economist Jennifer Brinkhaus, Accountant Maya Alexander, Statistician Henry Smith, Attorney Douglas Corkran, Supervisory Investigator Address all communications to Secretary to the Commission United States International Trade Commission Washington, DC 20436 U.S. International Trade Commission Washington, DC 20436 www.usitc.gov Strontium Chromate from Austria and France Investigation Nos. 731-TA-1422 and 731-TA-1423 (Final) Publication 4992 November 2019 CONTENTS Page Determinations ............................................................................................................................... 1 Views of the Commission ............................................................................................................... 3 Part I: Introduction .............................................................................................................. I-1 Background ................................................................................................................................ I-1 Statutory criteria ...................................................................................................................... -
Strontium Carbonate Safety Data Sheet
Safety Data Sheet According to Commission Regulations (EU) 830/2015 Creation date 17/02/2012 Version No. 1 Revision date 29/07/2019 Revision No. 4 Strontium Carbonate SECTION 1. Identification of the substance/mixture and of the company/undertaking 1.1 Product Identifier Commercial name Strontium Carbonate Chemical name Strontium Carbonate Synonyms Chemical formula SrCO3 Index number EU (Annex 1) Not applicable EC No. 216-643-7 CAS No. 1633-05-2 REACH registry number 01-2119502545-46-0002 1.2 Relevant identified uses of the substance or mixture and uses advised against Relevant identified uses Manufacture of pyrotecnical products Use in welding electrode coating Glass industry Manufacture of glazes, frits and enamels Manufacture of ceramic and electro-ceramic materials Manufacture of other strontium compounds Use in zinc electrolysis Uses advised against None 1.3 Details of the supplier of the safey data sheet Company name QUÍMICA DEL ESTRONCIO, S.A.U. Company address Los Parales, s.n., Valle de Escombreras, 30350 Cartagena (Spain) Company phone number +34 968 167 700 Company e-mail for SDS [email protected] 1.4 Emergency phone number +34 968 167 700 / +1 800 424 9300 (only for USA) SECTION 2. Hazards identification 2.1 Classification of the substance* According to Regulation EC No. 1272/2008 [CLP/GHS] Not classified Hazard Pictogram Signal word Hazard statements Precautionary statements 2.2 Label elements None 2.3 Other Hazards Criteria PBT/mPmB According to annex XIII of Regulation (EC) No. 1907/2006, does not meet the criteria for PBT or mPmB substance No other hazards identified * For complete meaning of R phrases and/or hazard statements (H): see section 16 SECTION 3. -
Investigation Into Sro/Srco3 for High Temperature Thermochemical Energy Storage
Solar Energy 160 (2018) 85–93 Contents lists available at ScienceDirect Solar Energy journal homepage: www.elsevier.com/locate/solener Investigation into SrO/SrCO3 for high temperature thermochemical energy T storage ⁎ Elham Bagherisereshki1, Justin Tran1, Fuqiong Lei, Nick AuYeung School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR 97331, USA ARTICLE INFO ABSTRACT Keywords: Global energy needs are continuously increasing while fossil fuels remain an uncertain resource. With a growing Solar thermochemistry population and increasing demand for energy, alternative energy is being pursued to power the future. Solar thermochemical Concentrated solar power (CSP) is a promising method of converting solar energy into electricity and works in Solar thermochemical energy storage conjunction with thermal energy storage (TES) to allow for power generation beyond on-sun hours. One method Carbonation cycles of TES is thermochemical energy storage (TCES), which is based on storing chemical energy via reversible reactions. An SrO/SrCO3 carbonation cycle offers high temperature heat (ca. 1200 °C), leading to higher effi- ciencies. The carbonation reaction was further investigated to determine the effects of particle size, temperature, partial pressure of CO2, and heat treatment temperature. Unfortunately, high temperatures cause materials to sinter, resulting in a decrease in reactivity over multiple cycles. The use of an inert diluent may help to inhibit sintering by acting as a physical barrier between the particles. Stored energy density of SrO/SrCO3 systems supported by CaSO4 and Sr3(PO4)2 was investigated for multiple cycles of 1150 °C exothermic carbonation followed by 1235 °C decomposition. At 25 and 50 wt%, Sr3(PO4), stable energy densities of roughly 500 ± 0.05 kJ/kg are achieved.