DOCSLIB.ORG

For Beryllium Oxide

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
For Beryllium Oxide GENERAL CERAMICS "" "-•—_ _ INC —————————— X TRANSMISSIOFA — - •""•" - - N DATE: ^\— \O—^>>>~ 5 Pages (Incl. cover sheet) TO: 7^0^^lJr\Ova-MjS<a^ FAX FROM: x SUBJECT: w \erseyQ7A2Ne _20Q* 1 -839-160X TW 0* TXcn »zfce_ -Luy Kdb^.or^^e_.... r r\jt "o _. ^ o-—^-—r - MATERIAL SAFETY DATA SHEET P SECTION J — IDENTIFICATION National Beryllia Division GENERAL CERAMICS, INC. Telephone: CHEMTREC 800-424-9300 First Avenue Genera! Ceramics : 201-839-1600 Haskeil, NJ 07420 ._ . .. ... ————————————————— , ———————— —— — ————— 1 Hazard Ftating Product Name; K1SO BERLOX Least Slight Health 2 Common Nam Synonymse& : Beryllia 0 1 Fire 0 Chemical Name: BERYLLIUM OXIDE Moderate High FormulO aBe ? 1 Extreme Reactivity 0 4 SECTION If- - HAZARDOUS INGREDIENTS INGREDIENT PERCENT ' C.A.S. NO. BERYLLIUM OXIDE 99.5 1304-56-9 SECTION II OCCUPATIONAI— L STANDARDS (BERYLLIUM) B (AH Concentrations Are As Micrograms per Cubic MeterOf Air) OSHA ACGIH Substance PEL CEILING PEAK _ TLV TLV-STEL BERYLLIUM 2 ,- . _, 5 —25 " " 2 N/A ACGI America= H n Conferenc Governmentaf eo l Industrial Hygienists Eigh= t Hou L r AveragPE e Permissible Exposure Limit Exceedee b o CEILINT t dNo Excep= G Pea r tFo k Limit PEAK . - 30 Minute Maximum Duration Concentration Above Ceiling Limit Eigh= t Hou V r TL Average Threshold Limit Vafue TLV-STE Minut5 1 L= e Short Term Exposure Limit ACGI= H Ceilin ) (C g Limit Exceedee —B No o tT d N/A = Not Applicable SECTION I VGOVERNMENTA— L REGULATIONS EPA EMISSION STANDARD (As Beryllium) — 0.01 Micrograms per cubic meter (30 day average) Ambient Air Standard 10 Grams/24 Hrs. Total Site Emission Limit - - -- - ._ «PDOT SHIPPING REGULATIONS— No special Requirements , EPA WASTEWASTER REGULATIONS— None— Regulation Pendine sar g * r - f n n n 1 f tD An I UUU I / NOTE: SiaWlne Local Regulations may=vary •--- --1-- -"™"— "~" ~ -.-• ,-^. —--~---. ,-. - ^ SECTION V — HEALTH HAZARDS it Over-Exposuref so ; Inhalatio Berylliuf no m Oxide Powde y causerma " beryiijosis ,serioua s chronic lung >ease. with cough, chest pain, shortnes breathf so , weight loss, weakness d fatigue,an . Beryllium-containing materials have been listed by the National Toxicology Program Annual Report on Carcinogens, and the Inter- national Agenc Researcr yfo Cancen ho r Monograp potentiaa s ha l carcinogen (cancer producing agent). Handling of solid shapes presents no dermatitis or skin absorption problem. SECTION VI — EMPLOYEE PROTECTION___________ Respiratory Protection: NIOSH approved high efficiency "cartridge or^uppiied air mask is required if Beryllium concentrationr iai n s exceeds OSHA standards. Eye Protection: None required except as related to normal operations. Protective Gloves: None normally required. Other Protective Equipment; Personnel performing operations where there are exposures to dust, mists, or fumes shoul e providedb . * d full-body protectiv . e ^ clothing. =_.. Ventilation: Provide adequate local exhaust ventilation when performing operations suc machinings ha , grinding, laser trimming, sand blasting, chemical.etching, etc. where respirabte dusts, mists, or fumes are generated. Powdered materials must.be stored in sealed containers; transfers must be made in ventilated hoods. Operations generating airborne materia lsampler musai e tb determino dt e exposure levels. Medical surveillance shoul conductee db employeer dfo s where warrante exposury db e date, Concentrationf so Beryllia in liquid coolants used for machinery should be kept low to avoid paniculate matter from - airborne. ...,__.. SECTION VII — FIRST AID Skin Contact: Properly clean any contaminated clothing. Wash body especially under fold skif sd o finger nan - nails. Cove y operan n wound avoio st d infections. Dermatitis from handlin usualls gi y limited to abrasion. Eye Contact: Flush eye with Boric Acid Solution for approximately 20 minutes. * fnhalatfon: Remove from source of exposure, have sinus cavities flushed by qualified physician. ingestfon: Fired, solid Beryllium Oxide Ceramics are indigestible. ___________SECTION VI M FIR— EXPLOSIOD EAN N DATA______ Flash Point (method used); N/A __________________________________ _____N/A____L LE Flammabl ; e_..,.UE Limits_L: _____N/ A •3uishing Media Water ______________________________ • pa2l Fire Fighting Procedures None Unusual Rre and Explosion Hazards None ,n SECTION IX — SPECIAL PRECAUTIONS _ fcautions for Handling and Storing: Store in closed containers. Handling solid Beryllium Oxide ceramics is harmless so long as they are kept dust-free. Avoid any operations which would create respirable dust or mists. Spill or Leak Precautions; Clean any loose material usjhg wet cleaning or properly equipped vacuum cleaner supplied with Hepa filters. Personnel involved in cleanup should wear proper~respirator and protective.clothing. SECTIO WAST— NX E DISPOSAL METHOD Becaus valus it f eeo Beryllium Oxide scra normalls pi y recycled casen .I s where economic justift no e o yth sd segregation of Beryllium Oxide scrap for resale, solid material may be landfiiled. Because of the potential inhalation hazard of handling this material as a discarded powder (such as baghouse fines) we recommend it be: 1) Sealed in two plastic bags, 2) placed within a DOT container approved for Poison B "compounds, 3} label the outer container wtfh the appropriate DOT Hazard Warning Labels, and 4) Ship to an approved hazardous waste disposal site. -- —- SECTIO— I NX PHYSICAL DATA Boiling Point Vapor Pressure Spec Gravity (°F) N/A (mm/Hg) N/A (H2O = 1) 2.85 ^^B?r Density Evaporation Rate Solubility ^^(Arr = 1) N/A (Water ~ 1) N/A A N/ in Water Percentile Volatile Appearance: by Volume N/A White Solid Molecular Melting Weight: 25.01 Point: 2547C C SECTION XI I— REACTIVIT Y DATA * May Y7 Will Not Unstable Hazardous x Stable Polymerization Occur 2.^ Occur ~ Condition d Materialsan Avoido st : Volatile Beryllium Hydroxid formee b n edca when firing solid Beryllium Oxide part higt sa h temperatures (over 1200CC moisn i td ) atmospheresan , Hazardous Decomposition Products; None, except as noted above. SECTION XII — IREFERENCE S ^^k(H: flR1000!9 I P. 2 16:0'9 5 41 GEN£RfiL_CER8MIL JU " C . INC. GENERAL CERAMICS INC ———— . F.-.X - 201-835-571t 6 TO: . l>nnic fflyHor.k__ DATS: ' cc . , ' '' ^ _______ j _______ NUMfeSR O? 5AGS.S : (Incl-oding Cover .Sheet) .• - .-,-.- JUL 15 '92 16:05 GENERflL" CERRMIC INC. - . P. 2 z s m selector charts §tl BERLON S high thermal conductivity dielectric encapsulants adhesives fillers NationaBSRUON$ Al Produc B&rullSt Division of a i ^* H«ktll, N,J, 07420 T«l«phorw 201 •838-1600 *^^ CORP 9mr 8 ( flRlOOOZS • 3 P. : 5 '92.16;.01 L JU 5 GENERA. L CERfiMIC INC. ... high thermal conduct!vity dieter "FEATURES FLEXIBLE ENCAPSULANTS , r f Poursbla Low Viscosity Flexible BS-0201 Encapsuland tan 0.7 43 7 1.94 Ease of Cura at Room Temperaturi Potting Compound ' Exolhero N m Hiat Conductive, BS-Q202 Medium Viscosity 0.8 45 7 1.97 Flexible Whit SiliconV eRT s Thick Section Cures Flowsble Encapsulate ' Encapsulants Excellent Dielectric Pottind an g Compounds Properties Soft Paste Enoepsutant BS-0203 and Conformalj Coating 1.0 50 7 2.01 £ Low Moisture Absorption Permits Repalnbillty Highest ThermalK BS-0205 Flflxlble Encapsulsnt 2.1 60 14 2.18 € Ozone Resistance St^f Paste Consistency RIGID ENCAPSULANTS Best durability Pourabilffy 8E-0037 Smalr Fo l Devlcea 1.4 45 7 1.91 £ Low Temperature Curing Ease of Curing at General Purpose Temperaturew RooLo o mt s High Thermil Conductivity BE-0303 Standard Roam Temperature 1.6 50 10 2.03 Rigid Encapsulants Good Dielectric Properties Curmfr Grada •« Fair Service Tamparature BE-0305 Best Thermal K in Room c Temperature Cure 2.3 60 14 2.16 Ffowable Standard Electrical BE-0033 Grade 1,5 48 7 1.98 9 Moderate Oven Temperature Excellent Olelsclrical Properties Curing Electrical Grade Excellent Mechanical Properties BE-Q345 High Performance 3.0 60 14 2.15 9 High Thermal Conductivity EJectricef Gride Rigid Encapsulants Good Service Temperature Bast Therma. lK Oven Cure Required BE-0347 In Oven Cured 3.5 70 56 2.31 9 Fourabld, Long Pot Life, Lon Lifet gPo , Rigid Good Service Temp. BE-0038 Long Pot Life 1.5 50 7 1.97 9 Encapsulates Heat Cura Required Standard Encapsulate Reada Us o yt Standard Ona-Part BE-0383 Rigid Encapsulant 1.5 50 7 2.02 9 One-Part Catalyso N t Required Hfgh Thermal Conductivity High Parfomisnce Ona- Rigid Encapsulates Good Pot Life BE-0385 Part Rigid Encapsufant 3,0 60 14 2.19 9 High Service Temperature Beat Thsrrral K in a Heat Cura Required BE-0387 One-Part -Encapsulant 3,5 70 56 2,35 9 FEATURES B .X" ~ S EPOXY ADHESIVES • r f • Moderata Qvan Temp. Mi5 o lt Glu3 a Line BE-0440 Cure. Two-Psrt Adheiive 1.2 47 1.7 1.95 89D Bonding I.C.'s High Strength Heat Conductive Electrically Insulating BE-0480 Flowable. One-Part 1,3 49 1.7 2.00 90D £poxy Adhesim Barrier Coatings Adhesive Metal-Metal, Ceramic-Metal, , Cerarrlc-Ceramic Adhasivas f^l np Ii u n l(1022 f •» r ^ f f r , 1 2 hrs. at hrs4 2 t ,a 65x10-* S-201 1500 70°F. 80°F. 500 550 450 1014 3.8 0.01 2 hrs. at 24 hrs. at 10-x 0 66 S-202 1800 70°F. F s 80 500 550 450- 1015 3.9 0.01 hrs2 t ,a 24 hrs. at 55 x 10-* S-2Q3 2000 70eF. F.' 80 500 550 440 10" 4,0 0.01 2 hrs. at hrs4 2 t .a 10-x 68 4 S-205 ?000 70°F. 80°F. 500 550 425 10" 4.3 0,01 20rnin. 48 hrs, at 10-x 7 61 E«37 200 at 70°F, 80°F. 200 250 375 10" 5.0 0,02 or E-302 20 min, 48 hrs. at 5.1 0.02 15x10"* 300 at70°F. 80°F.
Load more

Recommended publications
  • Llllllllllllllllllllllllllllllll^
    (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization llllllllllllllllllllllllllllllll^ International Bureau (10) International Publication Number (43) International Publication Date WO 2018/097733 A3 31 May 2018 (31.05.2018) WIPO I PCT (51) International Patent Classification: (88) Date of publication of the international search report: A61K31/194 (2006.01) A61P 9/00 (2006.01) 02 August 2018 (02.08.2018) A61K31/195 (2006.01) A61P 3/00 (2006.01) A61P 21/00 (2006.01) GOIN 33/48 (2006.01) (21) International Application Number: PCT/NO2017/000032 (22) International Filing Date: 23 November 2017 (23.11.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 20161866 23 November2016 (23.11.2016) NO (71) Applicant: BOHNE ASK0Y AS [NO/NO]; Romledalen 51, 5310 Hauglandshella (NO). (72) Inventors: BOHNE, Oyvind; Romledalen 51, 5310 Haug- landshella (NO). BOHNE, Victoria; Romledalen 51, 5310 Hauglandshella (NO). (74) Agent: ACAPO AS; P.O. Box 1880 Nordnes, 5817 Bergen (NO). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
    [Show full text]
  • [email protected] +1-703-527-3887 (International) Website
    Date of Issue: 17 June 2015 SAFETY DATA SHEET 1. SUBSTANCE AND SOURCE IDENTIFICATION Product Identifier SRM Number: 1877 SRM Name: Beryllium Oxide Powder Other Means of Identification: Not applicable. Recommended Use of This Material and Restrictions of Use This Standard Reference Material (SRM) is intended for use in laboratory analysis and health research for the development and validation of analytical methods and instruments used to determine beryllium, as well as for proficiency testing of laboratories involved in beryllium determinations. A unit of SRM 1877 consists of one bottle containing 20 g of beryllium oxide powder. Company Information National Institute of Standards and Technology Standard Reference Materials Program 100 Bureau Drive, Stop 2300 Gaithersburg, Maryland 20899-2300 Telephone: 301-975-2200 Emergency Telephone ChemTrec: FAX: 301-948-3730 1-800-424-9300 (North America) E-mail: [email protected] +1-703-527-3887 (International) Website: http://www.nist.gov/srm 2. HAZARDS IDENTIFICATION Classification Physical Hazard: Not classified. Health Hazard: Acute Toxicity, Inhalation Category 2 Skin Corrosion/Irritation Category 2 Serious Eye Damage/Irritation Category 2B Skin Sensitization Category 1 Carcinogenicity Category 1A STOT-Repeat Exposure Category 1 Label Elements Symbol Signal Word DANGER Hazard Statement(s) H330 Fatal if inhaled. H315+H320 Causes skin and eye irritation. H317 May cause an allergic skin reaction. H350 May cause lung cancer. H372 Causes damage to lungs through prolonged or repeated inhalation. Precautionary Statement(s) P201 Obtain special instructions before use. P202 Do not handle until all safety precautions have been read and understood. P260 Do not breathe dust. P264 Wash hands thoroughly after handling.
    [Show full text]
  • The Radiochemistry of Beryllium
    National Academy of Sciences National Research Council I NUCLEAR SCIENCE SERIES The Radiochemistry ·of Beryllium COMMITTEE ON NUCLEAR SCIENCE L. F. CURTISS, Chairman ROBLEY D. EVANS, Vice Chairman National Bureau of Standards MassaChusetts Institute of Technol0gy J. A. DeJUREN, Secretary ./Westinghouse Electric Corporation H.J. CURTIS G. G. MANOV Brookhaven National' LaboratOry Tracerlab, Inc. SAMUEL EPSTEIN W. WAYNE MEINKE CalUornia Institute of Technology University of Michigan HERBERT GOLDSTEIN A.H. SNELL Nuclear Development Corporation of , oak Ridge National Laboratory America E. A. UEHLING H.J. GOMBERG University of Washington University of Michigan D. M. VAN PATTER E.D.KLEMA Bartol Research Foundation Northwestern University ROBERT L. PLATZMAN Argonne National Laboratory LIAISON MEMBERS PAUL C .. AEBERSOLD W.D.URRY Atomic Energy Commission U. S. Air Force J. HOW ARD McMILLEN WILLIAM E. WRIGHT National Science Foundation Office of Naval Research SUBCOMMITTEE ON RADIOCHEMISTRY W. WAYNE MEINKE, Chairman HAROLD KIRBY University of Michigan Mound Laboratory GREGORY R. CHOPPIN GEORGE LEDDICOTTE Florida State University. Oak Ridge National Laboratory GEORGE A. COW AN JULIAN NIELSEN Los Alamos Scientific Laboratory Hanford Laboratories ARTHUR W. FAIRHALL ELLIS P. STEINBERG University of Washington Argonne National Laboratory JEROME HUDIS PETER C. STEVENSON Brookhaven National Laboratory University of California (Livermore) EARL HYDE LEO YAFFE University of CalUornia (Berkeley) McGill University CONSULTANTS NATHAN BALLOU WILLIAM MARLOW Naval Radiological Defense Laboratory N atlonal Bureau of Standards JAMESDeVOE University of Michigan CHF.MISTRY-RADIATION AND RADK>CHEMIST The Radiochemistry of Beryllium By A. W. FAIRHALL. Department of Chemistry University of Washington Seattle, Washington May 1960 ' Subcommittee on Radiochemistry National Academy of Sciences - National Research Council Printed in USA.
    [Show full text]
  • Corrosion of Refractories by Denis A
    A Chapter in the Refractories Handbook, edited by Charles A. Schacht, and to be published by Marcel Dekker, Inc., New York, NY 10016 Corrosion of Refractories by Denis A. Brosnan, PhD, PE Clemson University Clemson, SC 29634-0971 Introduction Refractories are used at elevated temperatures for structural purposes and they are used in many cases to contain a high temperature corrosive environment. This corrosive environment usually contains liquid (melted) phases that participate in chemical reactions with the refractory at the elevated temperatures resulting in refractory consumption or wear. It is usually not immediately obvious, but the oxidation and reduction state of the environment (as “redox” conditions or oxygen “activity”) can participate in and influence the chemical reactions that take place. Along with chemical reactions during corrosion, physical changes occur that may be accelerated by the corrosion process. Corrosion of refractories can be defined for the purposes of this discussion as follows: Corrosion of Refractories – refractory wear by loss of thickness and mass from the exposed face of the refractory as a consequence of chemical attack by a corroding fluid in a process in which the refractory and the corroding fluid react approaching chemical equilibrium in the zone of contact between the refractory and the fluid. It is an essential point that corrosion reactions proceed in a direction toward localized chemical equilibrium. This means that phase equilibrium diagrams can be used to analyze corrosion situations and to predict chemical strategies to minimize corrosion and wear rates. This gives persons interested in refractory corrosion two options. The first is to view corrosion as a chemical and physical process without a detailed application of phase equilibrium diagrams – called the “phenomenological approach”.
    [Show full text]
  • Exposure Data
    BERYLLIUM AND BERYLLIUM eOMPOUNDS Beryllium and beryllium compounds were considered by previous Working Groups, In 1971,1979 and 1987 (lARe, 1972, 1980, 1987a). New data have since become available, and these are included in the present monograph and have been taken into consideration In the evaluation. The agents considered herein Include (a) metallic beryllium, (b) beryllium- aluminium and -copper alloys and (c) some beryllum compounds. 1. Exposure Data 1.1 Chemical and physical data and analysis 1.1.1 Synonyms, trade names and molecular formulae Synonyms, trade names and molecular formulae for beryllium, beryllum-aluminium and -copper alloys and certain beryllium compounds are presented in Thble 1. The list is not exhaustive, nor does it comprise necessarily the most commercially important beryllum- containing substances; rather, it indicates the range of beryllum compounds available. 1. 1.2 Chemical and physical properties of the pure substances Selected chemical and physical properties of beryllium, beryllum-aluminium and -copper alloys and the beryllium compounds covered in this monograph are presented in Thble 2. The French chemist Vauquelin discovered beryllium in 1798 as the oxide, while analysing emerald to prove an analogous composition (Newland, 1984). The metallc element was first isolated in independent experiments by Wöhler (1828) and Bussy (1828), who called it 'glucinium' owing to the sweet taste of its salts; that name is stil used in the French chemical literature. Wöhler's name 'beryllum' was offcially recognized by IUPAe in 1957 (WHO, 1990). The atomic weight and corn mon valence of beryllum were originally the subject of much controversy but were correctly predicted by Mendeleev to be 9 and + 2, respectively (Everest, 1973).
    [Show full text]
  • Untraditional Synthesis of Boron-Containing Superhard and Refractory Materials - a Review B
    G.J. E.D.T., Vol. 2(1) 2013:21-26 ISSN 2319 – 7293 UNTRADITIONAL SYNTHESIS OF BORON-CONTAINING SUPERHARD AND REFRACTORY MATERIALS - A REVIEW B. Agyei-Tuffour1,2, E. Annan1,2, E. R. Rwenyagila1, E. Ampaw1, E. Arthur1, K. Mustapha1, S. Kolawole1, W. O. Soboyejo1,3, & D. D. Radev1,4 1Department of Materials Science and Engineering, African University of Science and Technology, Abuja-Nigeria 2Department of Materials Science and Engineering, Private Mail Bag, University of Ghana, Legon-Accra. 3Department of Mechanical and Aerospace Engineering, Princeton University, USA. 4Institute of General and Inorganic Chemistry, Bulgaria Academy of Sciences, Sofia-Bulgaria Abstract Boron-containing ceramics find large application in production of superhard and high-temperature materials with application in nuclear and aerospace techniques, military industry etc. The synthesis methods are decisive for the complexity of chemical, morphological and technological properties of these materials. The traditional high-temperature synthesis methods have some disadvantages leading to inconstancy of the product composition due to the boron evaporation, degradation of the furnace materials and contamination of the products, high energy losses etc. Here we show the advantages of some untraditional synthesis methods like direct mechanical synthesis and self propagating high-temperature synthesis (SHS) in the production of titanium diboride (TiB2), zirconium diboride (ZrB2) and production of dense boron carbide (B4C) based materials. Using SEM, TEM, XRD and analytical chemical methods, it was shown that diborides of titanium and zirconium have appropriate properties for production of dense ceramic materials. Using the method of mechanically-assisted sintering high-dense B4C-based ceramic materials was obtained. It was shown that the mechanical properties of materials obtained by pressureless sintering are close or overcome the corresponding properties of boron carbide densified by the method of hot pressing.
    [Show full text]
  • Research Memorandum
    RM ESOG21 NACA RESEARCH MEMORANDUM SO:ME PROPER TIES OF BER YLLIUM OXIDE AND BERYLLIUM OXIDE - COLUMBIUM CERAMALS By C. F. Robards and J. J. Gangler " Lewis Flight Propulsion Laboratory Cleveland, Ohio NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS WASHINGTON March 2 , 1951 NACA RM E5OG21 NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS RESEARCH MEMORANDUM SOME PROPERTIES OF BERYLLIUM OXIDE AND BERYLLIUM OXIDE - COLUMBIUM CERAMALS By C. F. Robards and J. J . Gangler SUMMARY Because of the potentially excellent refractory properties of beryllium oxide, a brief investigation was made of its short­ time tensile strength at a temperature of 18000 F and relative thermal-shock resistance from temperatures of 18000 and 2000° F to room temperature. The effect of additions of 2, 5, 8, 10, 12, and 15 percent by weight of columbium metal on the thermal-shock resistance of beryllium oxide was studied. Metallographic examination indicated that the metallic phase coalesced into pockets. Beryllium oxide had a tensile strength as high as 6160 :9ounds per square inch at 18000 F. The original columbium underwent a phase change, as indicated by X-ray analysis of the ceramals. The addition of columbium up to 15 percent by weight failed to improve the resistance to thermal shock. The phase change and the failure of the columbium to 'vet the beryllium oxide may explain the poor thermal-shock resistance of these ceramals. INTRODUCTION Beryllium oxide BeO has the highest thermal-shock resistance of the better-known oxide bodies. In an effort to extend the life of this material in thermal shock, an attempt was made at the NACA Lewis laboratory to use a metallic binder in the manner that has been successful in the carbide-tool industry.
    [Show full text]
  • High-Temperature Properties of Magnesia-Refractory Brick Treated with Oxide and Salt Solutions
    Q [R I 1898o I PLEASEDO NOT REMOVEFROM LIBRARY ()' ~ Bureau of Mines Report of Investigations/1985 ~ ~ High-Temperature Properties of Magnesia-Refractory Brick Treated With Oxide and Salt Solutions By James P. Bennett UNITED STATES DEPARTMENT OF THE INTERIOR Report of Investigations 8980 High-Temperature Properties of Magnesia-Refractory Brick Treated With Oxide and Salt Solutions By James P. Bennett UNITED STATES DEPARTMENT OF THE INTERIOR Donald Paul Hodel, Secretary BUREAU OF MINES Robert C. Horton, Director Research at the Tusca loo sa Research Center is carried out under a memorandum of agreement be tween . the Bureau of Mines, U.S. Department of the Interior, and the University of Alaba ma. Library of Congress Cataloging in Publication Data: Bennett, James P. (James Philip), 1951- High-temperature properties of magnesia-refractory brick treated with oxide and salt solutions. (Report of investigations 8980) Bi bl iography: p. 11. Supt. of Docs. no.: I 28.23: 8980. 1. Magnesia brick-Thermal properties. 2. Oxides. 3. Salt. 1. Title. II. Series: Report of investigations (United States. Bureau of Mines) ; 8980. TN23.C43 (TA418.26] 622s l669',821 85-600138 CONTENTS AbsIntroduction................................................................... tract ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 2 Refractory brick and sample preparation........................................ 2 Treatment procedure--solutions and techniques.................................. 4 Results and discussion........................................................
    [Show full text]
  • Electric Arc Furnace (EAF) Refractory Concept Solutions
    STEEL INDUSTRY ELECTRIC ARC FURNACES STEEL INDUSTRY CALDERYS PERFORMANCE YOU CAN TRUST For all industries with extreme temperatures and working conditions, Calderys is there for you. Combining a global network with local expertise, we offer customised solutions wherever you are: from monolithic refractory to bricks and precast shapes to a full range of engineering and installation services. KEY POINTS Over 100 years of refractory experience Over 2 300 employees across 33 countries 19 plants in 16 countries totaling 600 000 tons capacity Annual revenue of over € 500 million 1 Global Technology Centre and 15 Customisation Labs 150 major projects implemented every year Wholly-owned subsidiary of Imerys Group 2 STEEL INDUSTRY OUR VALUE TO THE STEELMAKING INDUSTRY The world leader in monolithic refractory solutions, Calderys has a full product and service portfolio to adapt to the refractory needs of steelmakers. We ensure that we propose products most suitable for your process requirements and deliver to you superior refractory performance and reliable services. We are able to do so by combining our innovative product range and modern installation techniques with end-to-end project management. Value Optimisation Offering tailor-made solutions that meet the commercial and technical requirements for optimal performance. Complete Refractory Solutions We offer a full range of refractory products to meet the process needs of modern Steelmaking. Technology Expertise Ensuring the best possible equipment availability and productivity at the lowest total refractory cost per ton of steel produced, whilst adhering to strict environmental and safety regulations in operations. 3 STEEL INDUSTRY CALDERYS A TRUSTED SUPPLIER IN THE STEEL INDUSTRY A world leader in Refractory Solutions, Calderys has the complete product and service portfolio for all applications.
    [Show full text]
  • Toxicological Profile for Beryllium
    BERYLLIUM 19 3. HEALTH EFFECTS 3.1 INTRODUCTION The primary purpose of this chapter is to provide public health officials, physicians, toxicologists, and other interested individuals and groups with an overall perspective on the toxicology of beryllium. It contains descriptions and evaluations of toxicological studies and epidemiological investigations and provides conclusions, where possible, on the relevance of toxicity and toxicokinetic data to public health. A glossary and list of acronyms, abbreviations, and symbols can be found at the end of this profile. 3.2 DISCUSSION OF HEALTH EFFECTS BY ROUTE OF EXPOSURE To help public health professionals and others address the needs of persons living or working near hazardous waste sites, the information in this section is organized first by route of exposure (inhalation, oral, and dermal) and then by health effect (death, systemic, immunological, neurological, reproductive, developmental, genotoxic, and carcinogenic effects). These data are discussed in terms of three exposure periods: acute (14 days or less), intermediate (15–364 days), and chronic (365 days or more). Levels of significant exposure for each route and duration are presented in tables and illustrated in figures. The points in the figures showing no-observed-adverse-effect levels (NOAELs) or lowest-observed-adverse-effect levels (LOAELs) reflect the actual doses (levels of exposure) used in the studies. LOAELS have been classified into "less serious" or "serious" effects. "Serious" effects are those that evoke failure in a biological system and can lead to morbidity or mortality (e.g., acute respiratory distress or death). "Less serious" effects are those that are not expected to cause significant dysfunction or death, or those whose significance to the organism is not entirely clear.
    [Show full text]
  • 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.
    [Show full text]
  • "Beryllium Oxide Digestion Optimization at the Savannah River Site"
    "Beryllium Oxide Digestion Optimization at the Savannah River Site" by Davin Jagnandan November, 2002 ==' ¥----­ ; A paper submitted to the faculty of the University of North Carolina at Chapel Hill in partial fulfillment of the requirements for the degree of Master of Public Health in the School of Public Health Abstract Chronic beryllium disease (CBD) is a debilitating lung disorder affecting an estimated 4.6% of past nuclear weapons and beryllium manufacturing workers. The Chronic Beryllium Disease Prevention Program, as set up by the U.S. Department of Energy (DOE), establishes guidelines for maintaining acceptable exposure levels in all beryllium manufacturing facilities. These exposure levels are based on the measuring of total beryllium which includes beryllium metal, beryllium salts, beryllium alloys and beryllium oxide. The most sensitive detection instruments used in industrial hygiene sampling measure beryllium in a solubilized form . Beryllium oxide, in particular, has been shown to resist solubilization unless it is performed in the presence of strong acid(s). This poses a problem for industrial hygienists because beryllium oxide has been shown to have a high level oftoxicity due to its small size and moderate solubility. The current Ip digestion method (EPA 3050B) for all metals at the Savannah River Site 1 involves the use of nitric and hydrochloric acids. It was hypothesized that 1 this method was inadequate for the complete digestion of beryllium oxide. This study examines this issue by comparing method 3050B with two other acid digestion methods. Once the most effective of the three methods was determined, optimization factors such as settling time, heating/reflux time, and hydrogen peroxide addition were examined.
    [Show full text]