Toxicological Profile for Barium and Barium
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Barium Chloride Dihydrate
NATIONAL TOXICOLOGY PROGRAM Technical Report Series No. 432 TOXICOLOGY AND CARCINOGENESIS STUDIES OF BARIUM CHLORIDE DIHYDRATE (CAS NO. 10326-27-9) IN F344/N RATS AND B6C3Fl MICE (DRINKING WATER STUDIES) U.S. DEPARTMENT OF HEALTE AND HUMAN SERVICES Public Health Service National Institutes of Health FOREWORD The National Toxicology Program (NTP) is made up of four charter agencies of the U.S. Department of Health and Human Services (DHHS): the National Cancer Institute (NCI), National Institutes of Health; the National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health; the National Center for Toxicological Research (NCTR), Food and Drug Administration; and the National Institute for Occupational Safety and Health (NIOSH), Centers for Disease Control. In July 1981, the Carcinogenesis Bioassay Testing Program, NCI, was transferred to the NIEHS. The NTP coordinates the relevant programs, staff, and resources from these Public Health Service agencies relating to basic and applied research and to biological assay development and validation. The NTP develops, evaluates, and disseminates scientific information about potentially toxic and hazardous chemicals. This knowledge is used for protecting the health of the American people and for the primary prevention of disease. The studies described in this Technical Report were performed under the direction of the NIEHS and were conducted in compliance with NTP laboratory health and safety requirements and must meet or exceed all applicable federal, state, and local health and safety regulations. Animal care and use were in accordance with the Public Health Service Policy on Humane Care and Useof Animals. The prechronic and chronic studies were conducted in compliancewith Food and Drug Administration(FDA) Good Laboratory Practice Regulations, and all aspects of the chronic studies were subjectedto retrospective quality assurance audits before being presented for public review. -
Barium Acetate
Barium acetate sc-202968 Material Safety Data Sheet Hazard Alert Code Key: EXTREME HIGH MODERATE LOW Section 1 - CHEMICAL PRODUCT AND COMPANY IDENTIFICATION PRODUCT NAME Barium acetate STATEMENT OF HAZARDOUS NATURE CONSIDERED A HAZARDOUS SUBSTANCE ACCORDING TO OSHA 29 CFR 1910.1200. NFPA FLAMMABILITY1 HEALTH2 HAZARD INSTABILITY0 SUPPLIER Company: Santa Cruz Biotechnology, Inc. Address: 2145 Delaware Ave Santa Cruz, CA 95060 Telephone: 800.457.3801 or 831.457.3800 Emergency Tel: CHEMWATCH: From within the US and Canada: 877-715-9305 Emergency Tel: From outside the US and Canada: +800 2436 2255 (1-800-CHEMCALL) or call +613 9573 3112 PRODUCT USE Chemical reagent, acetates, mordant for printing fabrics, catalyst manufacturing, paint and varnish dryers, lubricating oil and grease additive. SYNONYMS C4-H6-O4-Ba, Ba(C2H3O2)2, "barium diacetate", "acetic acid barium salt", "octan barnaty" Section 2 - HAZARDS IDENTIFICATION CHEMWATCH HAZARD RATINGS Min Max Flammability: 1 Toxicity: 2 Body Contact: 2 Min/Nil=0 Low=1 Reactivity: 1 Moderate=2 High=3 Chronic: 2 Extreme=4 CANADIAN WHMIS SYMBOLS 1 of 12 EMERGENCY OVERVIEW RISK Harmful by inhalation and if swallowed. POTENTIAL HEALTH EFFECTS ACUTE HEALTH EFFECTS SWALLOWED ! Accidental ingestion of the material may be harmful; animal experiments indicate that ingestion of less than 150 gram may be fatal or may produce serious damage to the health of the individual. ! Ingestion of soluble barium compounds may result in ulceration of the mucous membranes of the gastrointestinal tract, tightness in the muscles of the face and neck, gastroenteritis, vomiting, diarrhea, muscular tremors and paralysis, anxiety, weakness, labored breathing, cardiac irregularity due to contractions of smooth striated and cardiac muscles (often violent and painful), slow irregular pulse, hypertension, convulsions and respiratory failure. -
Barium, Inorganic Water-Soluble Compounds
Barium, inorganic water-soluble compounds Evaluation of health hazards and proposal of health based quality criteria for soil and drinking water Environmental Project No. 1516, 2013 Title: Author: Barium, inorganic water-soluble compounds. Elsa Nielsen Evaluation of health hazards and proposal of Ole Ladefoged health based quality criteria for soil and drinking Division of Toxicology and Risk Assessment water National Food Institute, Technical University of Denmark Published by: The Danish Environmental Protection Agency Strandgade 29 1401 Copenhagen K Denmark www.mst.dk/english Year: ISBN no. Authored in 2006 978-87-93026-71-1 Published in 2013 Disclaimer: When the occasion arises, the Danish Environmental Protection Agency will publish reports and papers concerning research and development projects within the environmental sector, financed by study grants provided by the Danish Environmental Protection Agency. It should be noted that such publications do not necessarily reflect the position or opinion of the Danish Environmental Protection Agency. However, publication does indicate that, in the opinion of the Danish Environmental Protection Agency, the content represents an important contribution to the debate surrounding Danish environmental policy. Sources must be acknowledged. Content CONTENT 2 PREFACE 5 1 GENERAL DESCRIPTION 6 1.1 IDENTITY 6 1.2 PHYSICAL / CHEMICAL PROPERTIES 6 1.3 PRODUCTION AND USE 7 1.4 ENVIRONMENTAL OCCURRENCE 7 1.4.1 Air 7 1.4.2 Water 7 1.4.3 Soil 8 1.4.4 Foodstuffs 8 1.5 ENVIRONMENTAL FATE 8 1.5.1 Air 8 1.5.2 -
Transport of Dangerous Goods
ST/SG/AC.10/1/Rev.16 (Vol.I) Recommendations on the TRANSPORT OF DANGEROUS GOODS Model Regulations Volume I Sixteenth revised edition UNITED NATIONS New York and Geneva, 2009 NOTE The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of the Secretariat of the United Nations concerning the legal status of any country, territory, city or area, or of its authorities, or concerning the delimitation of its frontiers or boundaries. ST/SG/AC.10/1/Rev.16 (Vol.I) Copyright © United Nations, 2009 All rights reserved. No part of this publication may, for sales purposes, be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, electrostatic, magnetic tape, mechanical, photocopying or otherwise, without prior permission in writing from the United Nations. UNITED NATIONS Sales No. E.09.VIII.2 ISBN 978-92-1-139136-7 (complete set of two volumes) ISSN 1014-5753 Volumes I and II not to be sold separately FOREWORD The Recommendations on the Transport of Dangerous Goods are addressed to governments and to the international organizations concerned with safety in the transport of dangerous goods. The first version, prepared by the United Nations Economic and Social Council's Committee of Experts on the Transport of Dangerous Goods, was published in 1956 (ST/ECA/43-E/CN.2/170). In response to developments in technology and the changing needs of users, they have been regularly amended and updated at succeeding sessions of the Committee of Experts pursuant to Resolution 645 G (XXIII) of 26 April 1957 of the Economic and Social Council and subsequent resolutions. -
RFC: IRIS Barium and Compounds Substance File
October 29, 2002 Information Quality Guidelines Staff Mail Code 28221T U.S. EPA 1200 Pennsylvania Ave., N.W. Washington, DC, 20460 Subject: Request for Correction of the IRIS Barium and Compounds substance file - Information disseminated by EPA that does not comply with EPA or OMB Information Quality Guidelines Dear Madam or Sir; Chemical Products Corporation (CPC), a Georgia corporation which produces Barium and Strontium chemicals at its Cartersville, Georgia facility, hereby submits this Request for Correction (RFC) concerning EPA’s Integrated Risk Information System Barium and Compounds Substance File (IRIS Ba File). The influential information contained in this file fails to comply with the OMB “Guidelines for Ensuring and Maximizing the Quality, Objectivity, Utility, and Integrity of Information Disseminated by Federal Agencies”. The information disseminated in EPA’s IRIS Barium and Compounds file directly contradicts the information published by EPA in the January 3, 1997 Federal Register and, therefore, cannot represent an EPA consensus position. The IRIS Ba File was revised in 1998 and 1999, yet it contains no mention of the toxicological evaluation conducted by EPA’s Office of Pollution, Pesticides, and Toxic Substances reported in 62 FR 366-372 (No. 2, January 3, 1997). There is no explanation of how a radically different interpretation of the same data could be justified. The NOAEL employed to calculate the Oral Reference Dose in the IRIS Ba File is 0.21 mg/kg/day; there is no LOAEL associated with this NOAEL. The NOAEL reported in 62 FR 366-372 is 70 mg/kg/day in rats and 165 mg/kg/day in mice; these values are taken from a National Toxicology Program technical report and are associated with a LOAEL of 180 mg/kg/day. -
Synthesis of Hexacelsian Barium Aluminosilicate by Film Boiling Chemical Vapour Process C
Synthesis of hexacelsian barium aluminosilicate by film boiling chemical vapour process C. Besnard, A. Allemand, P. David, Laurence Maillé To cite this version: C. Besnard, A. Allemand, P. David, Laurence Maillé. Synthesis of hexacelsian barium aluminosilicate by film boiling chemical vapour process. Journal of the European Ceramic Society, Elsevier, In press, 10.1016/j.jeurceramsoc.2020.02.021. hal-02494032 HAL Id: hal-02494032 https://hal.archives-ouvertes.fr/hal-02494032 Submitted on 28 Feb 2020 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Synthesis of hexacelsian barium aluminosilicate by film boiling chemical vapour process C. Besnard1, A. Allemand1-2, P. David2, L. Maillé1* 1University of Bordeaux, CNRS, Safran, CEA, Laboratoire des Composites ThermoStructuraux (LCTS), UMR 5801, F-33600 Pessac 2CEA Le Ripault, F-37260, Monts * Corresponding author, email address: [email protected] Abstract An original oxide/oxide ceramic-matrix composite containing mullite-based fibers and a barium aluminosilicate matrix has been synthesized by the film boiling chemical vapour infiltration process. Alkoxides were used as liquid precursors for aluminum, silicon and barium oxides. The structure and microstructure of the oxide matrix were characterized by Scanning Electron Microscopy, Energy Dispersive Spectroscopy and X-ray diffraction. -
Chemical Resistance of NYCAST Materials
Chemical Resistance of NYCAST Materials Distributed by: Chemical Temp.0C conc.% rating Chemical Temp.0C conc.% rating ACETALDEHYDE 23 40 A BARIUM HYDROXIDE 23 100 G ACETAMIDE 23 50 G BARIUM NITRATE 23 100 G ACETC ACID 100 2 G BARIUM SULFATE 23 15 G ACETIC ACID 100 10 P BARIUM SULFIDE 23 100 G ACETIC ACID 23 2 G BEER 23 100 G ACETIC ACID 23 10 P BEET LIQUIDS 23 100 H ACETICANHYDRIDE 23 100 P BENZALDEHYDE 23 100 P ACETONE 23 100 G BENZALDEHYDE 23 0.3 G ACETONITRILE 23 100 G BENZENE 23 100 G ACETYL CHLORIDE 23 100 P BENZOIC ACID 23 100 P ACETYLENE 23 100 G BENZYL ALCOHOL 23 100 Q ACRYLONITRILE 23 100 G BENZVL CHLORIDE 23 100 G ALLYLALCOHOL 23 100 A BORAX 23 SAT G ALLYL CHLORIDE 23 100 G BORIC ACID 23 10 A ALUM 23 SAT A BRANDY 23 100 G ALUMINUM CHLORIDE 23 10 G BROMINE 23 100 Q ALUMINUM FLUORIDE 23 100 G BROMINE 23 10 Q ALUMINUM HYDROXIDE 23 100 G BUTANE 23 100 G ALUMINUM POTASSIUMSULPHATE 23 10 P BUTANOL 23 100 G ALUMINUM SULFATE 50 10 G BUTTER 23 100 G AMMONIA 23 10 G BUTIER MILK 23 100 G AMMONIA 100 10 G BUTYL ACETATE 23 100 G AMMONIUM ACETATE 23 100 G BUTYLENE 23 100 A AMMONIUM CARBONATE 23 100 G BUTYLENE GLYCOL 23 100 G AMMONIUM CHLORIDE 23 10 G BUTYRIC ACID 23 100 A AMMONIUM CHLORIDE 23 37 G CALCIUM BISULFIDE 23 100 G AMMONIUM FLUORIDE 23 100 G CALCIUM BISULFITE 50 100 G AMMONIUM HYDROXIDE 23 40 G CALCIUM CARBONATE 23 100 G AMMONIUM NITRATE 23 100 G CALCIUM CHLORIDE 23 SAT Q AMMONIUM PERSULFATE 23 100 Q CALCIUM CHLORIDE 100 SAT P AMMONIUM PHOSPHATE 23 100 G CALCIUM HYDROXIDE 50 100 G AMMONIUM SULPHATE 23 100 G CALCIUM HYPOCHLORITE 23 -
Preparation of Barium Strontium Titanate Powder from Citrate
APPLIED ORGANOMETALLIC CHEMISTRY Appl. Organometal. Chem. 13, 383–397 (1999) Preparation of Barium Strontium Titanate Powder from Citrate Precursor Chen-Feng Kao* and Wein-Duo Yang Department of Chemical Engineering, National Cheng Kung University, Tainan, 70101, Taiwan TiCl4 or titanium isopropoxide reacted with INTRODUCTION citric acid to form a titanyl citrate precipitate. Barium strontium citrate solutions were then BaTiO3 is ferroelectric and piezoelectric and has added to the titanyl citrate reaction to form gels. extensive applications as an electronic material. It These gels were dried and calcined to (Ba,Sr)- can be used as a capacitor, thermistor, transducer, TiO3 powders. The gels and powders were accelerometer or degausser of colour television. characterized by DSC/TGA, IR, SEM and BaTiO3 doped with strontium retains its original XRD analyses. These results showed that, at characteristics but has a lower Curie temperature 500 °C, the gels decomposed to Ba,Sr carbonate for positive temperature coefficient devices under and TiO2, followed by the formation of (Ba,Sr)- various conditions. TiO3. The onset of perovskite formation oc- Besides solid-state reactions, chemical reactions curred at 600 °C, and was nearly complete at have also been used to prepare BaTiO3 powder. 1 1000 °C. Traces of SrCO3 were still present. Among them the hydrolysis of metal alkoxide , The cation ratios of the titanate powder oxalate precipitation in ethanol2, and alcoholic prepared in the pH range 5–6 were closest to dehydration of citrate solution3 are among the more the original stoichiometry. Only 0.1 mol% of the attractive methods. In 1956 Clabaugh et al.4 free cations remained in solution. -
Net Ionic Equation Worksheet Answers
Honors Chemistry Name__________________________________ Period_____ Net Ionic Equation Worksheet READ THIS: When two solutions of ionic compounds are mixed, a solid may form. This type of reaction is called a precipitation reaction, and the solid produced in the reaction is known as the precipitate. You can predict whether a precipitate will form using a list of solubility rules such as those found in the table below. When a combination of ions is described as insoluble, a precipitate forms. There are three types of equations that are commonly written to describe a precipitation reaction. The molecular equation shows each of the substances in the reaction as compounds with physical states written next to the chemical formulas. The complete ionic equation shows each of the aqueous compounds as separate ions. Insoluble substances are not separated and these have the symbol (s) written next to them. Water is also not separated and it has a (l) written next to it. Notice that there are ions that are present on both sides of the reaction arrow –> that is, they do not react. These ions are known as spectator ions and they are eliminated from complete ionic equation by crossing them out. The remaining equation is known as the net ionic equation. For example: The reaction of potassium chloride and lead II nitrate Molecular Equation: 2KCl (aq) + Pb(NO3)2 (aq) -> 2KNO3 (aq) + PbCl2 (s) + - 2+ 3– + – Complete Ionic Equation: 2K (aq) + 2Cl (aq) + Pb (aq) + 2NO (aq) -> 2K (aq) + 2NO3 (aq) + PbCl2 (s) - 2+ Net Ionic Equation: 2Cl (aq) + Pb (aq) -> PbCl2 (s) Directions: Write balanced molecular, ionic, and net ionic equations for each of the following reactions. -
PUBLIC HEALTH STATEMENT Cesium CAS#: 7440-46-2
PUBLIC HEALTH STATEMENT Cesium CAS#: 7440-46-2 Division of Toxicology April 2004 This Public Health Statement is the summary exposed to a substance when you come in contact chapter from the Toxicological Profile for cesium. It with it. You may be exposed by breathing, eating, is one in a series of Public Health Statements about or drinking the substance, or by skin contact. If the hazardous substances and their health effects. A substance is radioactive, you may also be exposed shorter version, the ToxFAQs™, is also available. to radiation if you are near it. This information is important because this substance may harm you. The effects of exposure to External exposure to radiation may occur from any hazardous substance depend on the dose, the natural or man-made sources. Naturally occurring duration, how you are exposed, personal traits and sources of radiation are cosmic radiation from space habits, and whether other chemicals are present. For or radioactive materials in soil or building materials. more information, call the ATSDR Information Man-made sources of radioactive materials are Center at 1-888-422-8737. found in consumer products, industrial equipment, _____________________________________ atom bomb fallout, and to a smaller extent from This public health statement tells you about cesium hospital waste, medical devices, and nuclear and the effects of exposure. reactors. The Environmental Protection Agency (EPA) If you are exposed to cesium, many factors identifies the most serious hazardous waste sites in determine whether you’ll be harmed. These factors the nation. These sites make up the National include the dose (how much), the duration (how Priorities List (NPL) and are the sites targeted for long), and how you come in contact with it. -
Of the Periodic Table
of the Periodic Table teacher notes Give your students a visual introduction to the families of the periodic table! This product includes eight mini- posters, one for each of the element families on the main group of the periodic table: Alkali Metals, Alkaline Earth Metals, Boron/Aluminum Group (Icosagens), Carbon Group (Crystallogens), Nitrogen Group (Pnictogens), Oxygen Group (Chalcogens), Halogens, and Noble Gases. The mini-posters give overview information about the family as well as a visual of where on the periodic table the family is located and a diagram of an atom of that family highlighting the number of valence electrons. Also included is the student packet, which is broken into the eight families and asks for specific information that students will find on the mini-posters. The students are also directed to color each family with a specific color on the blank graphic organizer at the end of their packet and they go to the fantastic interactive table at www.periodictable.com to learn even more about the elements in each family. Furthermore, there is a section for students to conduct their own research on the element of hydrogen, which does not belong to a family. When I use this activity, I print two of each mini-poster in color (pages 8 through 15 of this file), laminate them, and lay them on a big table. I have students work in partners to read about each family, one at a time, and complete that section of the student packet (pages 16 through 21 of this file). When they finish, they bring the mini-poster back to the table for another group to use. -
Synthesis of a Disperse Phase of Barium Oxide on Aluminum Oxide
Synthesis of a Disperse Phase of Barium Oxide on Aluminum Oxide by Successive Ionic Layer Deposition Results and Discussion SILD was used to deposit nanoislands of aluminum oxide on a silicon wafer, and then deposit even smaller nanoislands of barium oxide on the surface of the aluminum oxide Thomas I Gilbert * and Johannes W. Schwank nanoislands. Modifications to the conventional SILD procedure were necessary to achieve a University of Michigan, Ann Arbor, Michigan 48109 (USA) successful synthesis. This disperse phase of barium oxide on aluminum oxide supported on a *[email protected] silicon wafer was thermally stable to 450°C. Introduction Heterogeneous catalyst design, synthesis, and characterization have been strongly a b influenced by recent advances in nanoscience [1] Several recent studies suggest that a highly dispersed phase of barium oxide supported on γ-alumina is a better catalyst for NO x storage in lean burn engine emissions than a bulk-like phase of supported barium oxide [2-5]. Successive ionic layer deposition (SILD), also known as successive ionic layer adsorption and reaction (SILAR), is an aqueous method which exploits the electric double layer effect to create thin solid films on supports. In SILD, submonolayers of desired cations and anions are alternately and selectively adsorbed on a support material to produce SILD nanoislands or nanolayers with controlled composition and morphology. Much still remains to be understood about the SILD mechanism. It is unclear whether a precipitate is simply formed on the substrate with each SILD cycle or whether ionic or electrostatic forces persist through SILD layers. If the latter occurs, it is conceivable that these Figure 1.