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A Guide to Export Controls
Foreign Affairs, Trade and Affaires étrangères, Commerce et Development Canada Développment Canada A Guide To CANADA’S EXPORT CONTROLS December 2012 Introduction The issuance of export permits is administered by the Export Controls Division (TIE) of Foreign Affairs, Trade and Development Canada (DFATD). TIE provides assistance to exporters in determining if export permits are required. It also publishes brochures and Notices to Exporters that are freely available on request and on our website www.exportcontrols.gc.ca. How to contact us: Export Controls Division (TIE) Foreign Affairs, Trade and Development Canada 111 Sussex Drive Ottawa, Ontario K1A 0G2 Telephone: (613) 996-2387 Facsimile: (613) 996-9933 Email: [email protected] For information on how to apply for an export permit and additional information on export controls please refer to our website. To enquire on the status of an export permit application: Recognized EXCOL users can check the status of an export permit application on-line. Non-recognized users can call (613) 996-2387 or email [email protected] and quote your export permit application identification (ref ID) number. Export Controls Division website: www.exportcontrols.gc.ca This Guide, at time of publication, encompasses the list of items enumerated on the Export Control List (ECL) that are controlled for export in accordance with Canadian foreign policy, including Canada’s participation in multilateral export control regimes and bilateral agreements. Unless otherwise specified, the export controls contained in this Guide apply to all destinations except the United States. Canada’s Export Control List can be found at the Department of Justice website at http://canada.justice.gc.ca/. -
An Investigation of the Crystal Growth of Heavy Sulfides in Supercritical
AN ABSTRACT OF THE THESIS OF LEROY CRAWFORD LEWIS for the Ph. D. (Name) (Degree) in CHEMISTRY presented on (Major) (Date) Title: AN INVESTIGATION OF THE CRYSTAL GROWTH OF HEAVY SULFIDES IN SUPERCRITICAL HYDROGEN SULFIDE Abstract approved Redacted for privacy Dr. WilliarriIJ. Fredericks Solubility studies on the heavy metal sulfides in liquid hydrogen sulfide at room temperature were carried out using the isopiestic method. The results were compared with earlier work and with a theoretical result based on Raoult's Law. A relative order for the solubilities of sulfur and the sulfides of tin, lead, mercury, iron, zinc, antimony, arsenic, silver, and cadmium was determined and found to agree with the theoretical result. Hydrogen sulfide is a strong enough oxidizing agent to oxidize stannous sulfide to stannic sulfide in neutral or basic solution (with triethylamine added). In basic solution antimony trisulfide is oxi- dized to antimony pentasulfide. In basic solution cadmium sulfide apparently forms a bisulfide complex in which three moles of bisul- fide ion are bonded to one mole of cadmium sulfide. Measurements were made extending the range over which the volumetric properties of hydrogen sulfide have been investigated to 220 °C and 2000 atm. A virial expression in density was used to represent the data. Good agreement, over the entire range investi- gated, between the virial expressions, earlier work, and the theorem of corresponding states was found. Electrical measurements were made on supercritical hydro- gen sulfide over the density range of 10 -24 moles per liter and at temperatures from the critical temperature to 220 °C. Dielectric constant measurements were represented by a dielectric virial ex- pression. -
Theoretical Studies on As and Sb Sulfide Molecules
Mineral Spectroscopy: A Tribute to Roger G. Bums © The Geochemical Society, Special Publication No.5, 1996 Editors: M. D. Dyar, C. McCammon and M. W. Schaefer Theoretical studies on As and Sb sulfide molecules J. A. TOSSELL Department of Chemistry and Biochemistry University of Maryland, College Park, MD 20742, U.S.A. Abstract-Dimorphite (As4S3) and realgar and pararealgar (As4S4) occur as crystalline solids con- taining As4S3 and As4S4 molecules, respectively. Crystalline As2S3 (orpiment) has a layered structure composed of rings of AsS3 triangles, rather than one composed of discrete As4S6 molecules. When orpiment dissolves in concentrated sulfidic solutions the species produced, as characterized by IR and EXAFS, are mononuclear, e.g. ASS3H21, but solubility studies suggest trimeric species in some concentration regimes. Of the antimony sulfides only Sb2S3 (stibnite) has been characterized and its crystal structure does not contain Sb4S6 molecular units. We have used molecular quantum mechanical techniques to calculate the structures, stabilities, vibrational spectra and other properties of As S , 4 3 As4S4, As4S6, As4SIO, Sb4S3, Sb4S4, Sb4S6 and Sb4SlO (as well as S8 and P4S3, for comparison with previous calculations). The calculated structures and vibrational spectra are in good agreement with experiment (after scaling the vibrational frequencies by the standard correction factor of 0.893 for polarized split valence Hartree-Fock self-consistent-field calculations). The calculated geometry of the As4S. isomer recently characterized in pararealgar crystals also agrees well with experiment and is calculated to be about 2.9 kcal/mole less stable than the As4S4 isomer found in realgar. The calculated heats of formation of the arsenic sulfide gas-phase molecules, compared to the elemental cluster molecules As., Sb, and S8, are smaller than the experimental heats of formation for the solid arsenic sulfides, but shown the same trend with oxidation state. -
A Single-Crystal Epr Study of Radiation-Induced Defects
A SINGLE-CRYSTAL EPR STUDY OF RADIATION-INDUCED DEFECTS IN SELECTED SILICATES A Thesis Submitted to the College of Graduate Studies and Research In Partial Fulfillment of the Requirements For the Degree of Doctor of Philosophy In the Department of Geological Sciences University of Saskatchewan Saskatoon By Mao Mao Copyright Mao Mao, October, 2012. All rights reserved. Permission to Use In presenting this thesis in partial fulfilment of the requirements for a Doctor of Philosophy degree from the University of Saskatchewan, I agree that the Libraries of this University may make it freely available for inspection. I further agree that permission for copying of this thesis in any manner, in whole or in part, for scholarly purposes may be granted by the professor or professors who supervised my thesis work or, in their absence, by the Head of the Department or the Dean of the College in which my thesis work was done. It is understood that any copying or publication or use of this thesis or parts thereof for financial gain shall not be allowed without my written permission. It is also understood that due recognition shall be given to me and to the University of Saskatchewan in any scholarly use which may be made of any material in my thesis. Requests for permission to copy or to make other use of material in this thesis in whole or part should be addressed to: Head of the Department of Geological Sciences 114 Science Place University of Saskatchewan Saskatoon, Saskatchewan S7N5E2, Canada i Abstract This thesis presents a series of single-crystal electron paramagnetic resonance (EPR) studies on radiation-induced defects in selected silicate minerals, including apophyllites, prehnite, and hemimorphite, not only providing new insights to mechanisms of radiation-induced damage in minerals but also having direct relevance to remediation of heavy metalloid contamination and nuclear waste disposal. -
Multivalent Metals and Polyatomic Ions 1
Name Date Comprehension Section 4.2 Use with textbook pages 189–193. Multivalent metals and polyatomic ions 1. Define the following terms: (a) ionic compound (b) multivalent metal (c) polyatomic ion 2. Write the formulae and names of the compounds with the following combination of ions. The first row is completed to help guide you. Positive ion Negative ion Formula Compound name (a) Pb2+ O2– PbO lead(II) oxide (b) Sb4+ S2– (c) TlCl (d) tin(II) fluoride (e) Mo2S3 (f) Rh4+ Br– (g) copper(I) telluride (h) NbI5 (i) Pd2+ Cl– 3. Write the chemical formula for each of the following compounds. (a) manganese(II) chloride (f) vanadium(V) oxide (b) chromium(III) sulphide (g) rhenium(VII) arsenide (c) titanium(IV) oxide (h) platinum(IV) nitride (d) uranium(VI) fluoride (i) nickel(II) cyanide (e) nickel(II) sulphide (j) bismuth(V) phosphide 68 MHR • Section 4.2 Names and Formulas of Compounds © 2008 McGraw-Hill Ryerson Limited 0056_080_BCSci10_U2CH04_098461.in6856_080_BCSci10_U2CH04_098461.in68 6688 PDF Pass 77/11/08/11/08 55:25:38:25:38 PPMM Name Date Comprehension Section 4.2 4. Write the formulae for the compounds formed from the following ions. Then name the compounds. Ions Formula Compound name + – (a) K NO3 KNO3 potassium nitrate 2+ 2– (b) Ca CO3 + – (c) Li HSO4 2+ 2– (d) Mg SO3 2+ – (e) Sr CH3COO + 2– (f) NH4 Cr2O7 + – (g) Na MnO4 + – (h) Ag ClO3 (i) Cs+ OH– 2+ 2– (j) Ba CrO4 5. Write the chemical formula for each of the following compounds. (a) barium bisulphate (f) calcium phosphate (b) sodium chlorate (g) aluminum sulphate (c) potassium chromate (h) cadmium carbonate (d) calcium cyanide (i) silver nitrite (e) potassium hydroxide (j) ammonium hydrogen carbonate © 2008 McGraw-Hill Ryerson Limited Section 4.2 Names and Formulas of Compounds • MHR 69 0056_080_BCSci10_U2CH04_098461.in6956_080_BCSci10_U2CH04_098461.in69 6699 PDF Pass77/11/08/11/08 55:25:39:25:39 PPMM Name Date Comprehension Section 4.2 Use with textbook pages 186–196. -
(12) United States Patent (10) Patent No.: US 8,333,879 B2 M00re Et Al
US0083.33879B2 (12) United States Patent (10) Patent No.: US 8,333,879 B2 M00re et al. (45) Date of Patent: Dec. 18, 2012 (54) ELECTRODEPOSITION OF DELECTRIC (56) References Cited COATINGS ON SEMCONDUCTIVE SUBSTRATES U.S. PATENT DOCUMENTS 3,455,806 A 7/1969 Spoor et al. (75) Inventors: Kelly L. Moore, Dunbar, PA (US); 3,663,389 A 5, 1972 Koral et al. Michael J. Pawlik, Glenshaw, PA (US); 3,749,657 A 7, 1973 Le Bras et al. Michael G. Sandala, Pittsburgh, PA 3,793,278 A 2f1974 De Bona (US); Craig A. Wilson, Allison Park, PA 3,928, 157 A 12/1975 Suematsu et al. 3,947.338 A 3, 1976 Jerabek et al. (US) 3,947,339 A 3, 1976 Jerabek et al. 3,962,165 A 6, 1976 Bosso et al. (73) Assignee: PPG Industries Ohio, Inc., Cleveland, 3,975,346 A 8, 1976 Bosso et al. OH (US) 3,984,299 A 10, 1976 Jerabek (*) Notice: Subject to any disclaimer, the term of this (Continued) patent is extended or adjusted under 35 FOREIGN PATENT DOCUMENTS U.S.C. 154(b) by 0 days. EP OO12463 A1 6, 1980 (21) Appl. No.: 13/240,455 OTHER PUBLICATIONS (22) Filed: Sep. 22, 2011 Kohler, E. P. "An Apparatus for Determining Both the Quantity of Gas Evolved and the Amount of Reagent Consumed in Reactions (65) Prior Publication Data with Methyl Magnesium Iodide'. J. Am. Chem. Soc., 1927, 49 (12), US 2012/OOO6683 A1 Jan. 12, 2012 3181-3188, American Chemical Society, Washington, D.C. Related U.S. -
Safety Data Sheet
SAFETY DATA SHEET Revision Date 29-Jun-2018 Revision Number 1 SECTION 1: IDENTIFICATION OF THE SUBSTANCE/MIXTURE AND OF THE COMPANY/UNDERTAKING 1.1. Product identification Product Description: Cadmium arsenide Cat No. : 22773 CAS-No 12006-15-4 Molecular Formula As2 Cd3 1.2. Relevant identified uses of the substance or mixture and uses advised against Recommended Use Laboratory chemicals. Uses advised against No Information available 1.3. Details of the supplier of the safety data sheet Company Alfa Aesar . Avocado Research Chemicals, Ltd. Shore Road Port of Heysham Industrial Park Heysham, Lancashire LA3 2XY United Kingdom Office Tel: +44 (0) 1524 850506 Office Fax: +44 (0) 1524 850608 E-mail address [email protected] www.alfa.com Product Safety Department 1.4. Emergency telephone number Call Carechem 24 at +44 (0) 1865 407333 (English only); +44 (0) 1235 239670 (Multi-language) SECTION 2: HAZARDS IDENTIFICATION 2.1. Classification of the substance or mixture CLP Classification - Regulation (EC) No 1272/2008 Physical hazards Based on available data, the classification criteria are not met Health hazards Acute oral toxicity Category 3 (H301) Acute Inhalation Toxicity - Dusts and Mists Category 2 (H330) Environmental hazards ______________________________________________________________________________________________ ALFAA22773 Page 1 / 10 SAFETY DATA SHEET Cadmium arsenide Revision Date 29-Jun-2018 ______________________________________________________________________________________________ Acute aquatic toxicity Category 1 (H400) Chronic -
Chemical Name Federal P Code CAS Registry Number Acutely
Acutely / Extremely Hazardous Waste List Federal P CAS Registry Acutely / Extremely Chemical Name Code Number Hazardous 4,7-Methano-1H-indene, 1,4,5,6,7,8,8-heptachloro-3a,4,7,7a-tetrahydro- P059 76-44-8 Acutely Hazardous 6,9-Methano-2,4,3-benzodioxathiepin, 6,7,8,9,10,10- hexachloro-1,5,5a,6,9,9a-hexahydro-, 3-oxide P050 115-29-7 Acutely Hazardous Methanimidamide, N,N-dimethyl-N'-[2-methyl-4-[[(methylamino)carbonyl]oxy]phenyl]- P197 17702-57-7 Acutely Hazardous 1-(o-Chlorophenyl)thiourea P026 5344-82-1 Acutely Hazardous 1-(o-Chlorophenyl)thiourea 5344-82-1 Extremely Hazardous 1,1,1-Trichloro-2, -bis(p-methoxyphenyl)ethane Extremely Hazardous 1,1a,2,2,3,3a,4,5,5,5a,5b,6-Dodecachlorooctahydro-1,3,4-metheno-1H-cyclobuta (cd) pentalene, Dechlorane Extremely Hazardous 1,1a,3,3a,4,5,5,5a,5b,6-Decachloro--octahydro-1,2,4-metheno-2H-cyclobuta (cd) pentalen-2- one, chlorecone Extremely Hazardous 1,1-Dimethylhydrazine 57-14-7 Extremely Hazardous 1,2,3,4,10,10-Hexachloro-6,7-epoxy-1,4,4,4a,5,6,7,8,8a-octahydro-1,4-endo-endo-5,8- dimethanonaph-thalene Extremely Hazardous 1,2,3-Propanetriol, trinitrate P081 55-63-0 Acutely Hazardous 1,2,3-Propanetriol, trinitrate 55-63-0 Extremely Hazardous 1,2,4,5,6,7,8,8-Octachloro-4,7-methano-3a,4,7,7a-tetra- hydro- indane Extremely Hazardous 1,2-Benzenediol, 4-[1-hydroxy-2-(methylamino)ethyl]- 51-43-4 Extremely Hazardous 1,2-Benzenediol, 4-[1-hydroxy-2-(methylamino)ethyl]-, P042 51-43-4 Acutely Hazardous 1,2-Dibromo-3-chloropropane 96-12-8 Extremely Hazardous 1,2-Propylenimine P067 75-55-8 Acutely Hazardous 1,2-Propylenimine 75-55-8 Extremely Hazardous 1,3,4,5,6,7,8,8-Octachloro-1,3,3a,4,7,7a-hexahydro-4,7-methanoisobenzofuran Extremely Hazardous 1,3-Dithiolane-2-carboxaldehyde, 2,4-dimethyl-, O- [(methylamino)-carbonyl]oxime 26419-73-8 Extremely Hazardous 1,3-Dithiolane-2-carboxaldehyde, 2,4-dimethyl-, O- [(methylamino)-carbonyl]oxime. -
Week 1 Slides
Adventures in Chemistry Instructor: Abi Oyeyemi Week 1 States of matter Boiling point, Melting point Atoms Types of Chemistry Hazards PPE Atoms consist of: Neutrons Protons Electrons 0 + - In In shells of atoms Nucleus States of Matter Solid, liquid, gas Week 2 Flame tests Orbitals Periodic table Octet Groups and Periods Experiment: Making a non-Newtonian Fluid Periodic Table Groups Each group tells how many electrons are in the outer shell. In chemistry, a group (also known as a family) is a column of elements in the periodic table of the chemical elements. The elements in each group have the same number of electrons in the outer orbital. Those outer electrons are also called valence electrons Periodic table 118 elements total 8 groups Group 1- Alkali metals Group 2- Alkali earth metals Group 7 –Halogens Group 8-Noble gases Elements structure Includes abbreviated name of element Atomic number-number of protons Always same number of protons and neutrons Mass number- average no. of neutrons and protons Amu: atomic mass units Isotopes Periodic table: Periods A period in the periodic table is a row of chemical elements. All elements in a row have the same number of electron shells/orbitals Week 3 More on the periodic table Electronic configuration Isotopes Chemical vs Physical changes Compounds vs Mixtures Ionic and Covalent bonds Demonstration Lava Lamp Activity: Making models Why do elements react? Octet, want a full outer shell How? By taking or giving electrons (ionic bonding) Or by sharing electrons (covalent bonding) Compounds- A compound is a substance formed when two or more chemical elements are chemically bonded together. -
Modelling and Optimising Gaas/Al (X) Ga (1-X) As Multiple Quantum Well
University of London Imperial College of Science, Technology and Medicine Department of Physics Modelling and Optimising GaAs/AlxGa1 xAs − Multiple Quantum Well Solar Cells James P. Connolly arXiv:1006.1053v1 [cond-mat.mes-hall] 5 Jun 2010 Submitted in part fulfilment of the requirements for the degree of Doctor of Philosophy in Science of the University of London and the Diploma of Imperial College, January 1997 2 Abstract The quantum well solar cell (QWSC) is a p - i - n solar cell with quantum wells in the intrinsic region. Previous work has shown that QWSCs have a greater open circuit voltage (Voc) than would be provided by a cell with the quantum well effective bandgap. This suggests that the fundamental efficiency limits of QWSCs are greater than those of single bandgap solar cells. The following work investigates QWSCs in the GaAs/AlxGa1−xAs materials system. The design and optimisation of a QWSC in this system requires studies of the voltage and current dependencies on the aluminium fraction. QWSCs with different aluminium fractions have been studied and show an increasing Voc with increasing barrier aluminium composition. The QE however decreases with increasing aluminium composition. We de- velop a model of the QE to test novel QWSC designs with a view to minimising this problem. This work concentrates on two design changes. The first deals with com- positionally graded structures in which the bandgap varies with position. This bandgap variation introduces an quasi electric field which can be used to increase minority carrier collection in the low efficiency p and n layers. This technique also increases the light flux reaching the highly efficient depletion regions. -
Determination of Band Structure of Gallium-Arsenide and Aluminium-Arsenide Using Density Functional Theory
Computational Chemistry, 2016, 4, 73-82 Published Online July 2016 in SciRes. http://www.scirp.org/journal/cc http://dx.doi.org/10.4236/cc.2016.43007 Determination of Band Structure of Gallium-Arsenide and Aluminium-Arsenide Using Density Functional Theory J. A. Owolabi1, M. Y. Onimisi1, S. G. Abdu2, G. O. Olowomofe1 1Department of Physics, Nigerian Defence Academy, Kaduna, Nigeria 2Department of Physics, Kaduna State University, Kaduna, Nigeria Received 18 April 2016; accepted 2 July 2016; published 5 July 2016 Copyright © 2016 by authors and Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY). http://creativecommons.org/licenses/by/4.0/ Abstract This research paper is on Density Functional Theory (DFT) within Local Density Approximation. The calculation was performed using Fritz Haber Institute Ab-initio Molecular Simulations (FHI- AIMS) code based on numerical atomic-centered orbital basis sets. The electronic band struc- ture, total density of state (DOS) and band gap energy were calculated for Gallium-Arsenide and Aluminium-Arsenide in diamond structures. The result of minimum total energy and computa- tional time obtained from the experimental lattice constant 5.63 A for both Gallium Arsenide and Aluminium Arsenide is −114,915.7903 eV and 64.989 s, respectively. The electronic band structure analysis shows that Aluminium-Arsenide is an indirect band gap semiconductor while Gallium-Arsenide is a direct band gap semiconductor. The energy gap results obtained for GaAs is 0.37 eV and AlAs is 1.42 eV. The band gap in GaAs observed is very small when compared to AlAs. -
TOXMAP: a GIS Information Portal to Environmental Health Databases
TOXMAP: A GIS Information Portal to Environmental Health Databases Marti Szczur (National Library of Medicine/NIH/DHHS) Chris Krahe (Aquilent Inc.) Colette Hochstein (National Library of Medicine/NIH/DHHS) Abstract The National Library of Medicine (NLM) has an extensive collection of environmental health information, including bibliographic and factual data on hazardous chemical substances in its TOXNET databases. TOXNET also provides access to the EPA Toxic Release Inventory (TRI) data, which covers air, water, and land releases, as reported by industrial facilities around the United States. Built using ArcIMS, NLM has developed a web-based system, TOXMAP, in which users can dynamically create maps that show where TRI chemicals are released and directly link to the appropriate chemical data records in TOXNET. By extracting the associated regional geographic terms from the displayed map (e.g., rivers, towns, county, state), TOXMAP (http://toxmap.nlm.nih.gov/) also provides customized chemical and/or region-specific searches to NLM's bibliographic bio-medical databases resources. This paper will focus on the design concepts, implementation strategy, challenges, and feedback from users. It will also address issues associated with data accuracy, the risk of data misinterpretation, and future directions. - 1 - Background The National Library of Medicine (NLM)1 is part of the National Institutes of Health (NIH), which is one of the organizations within the Department of Health & Human Services2. NLM is the world’s largest medical library and is a leader in the selection, acquisition, organization, and provision of medically related literature and data. Within NLM, the Specialized Information Services Division (SIS) is responsible for a collection of databases and related information on environmental health.