Chemical Resistance of Plastics
Total Page：16
File Type：pdf, Size：1020Kb
Load more
Recommended publications
-
Business Guidance on Phthalates
Business guidance on phthalates How to limit phthalates of concern in articles? November 2013 Danish branch of EPBA, Brussels This guidance has been prepared on the initiative of the Danish EPA and organisations, DI (the Confederation of Danish Industry), the Danish Chamber of Commerce, DI ITEK (the Danish ICT and electronics federation for it, telecommunications, electronics and communication enterprises), BFE (the Danish Consumer Electronics Association), Batteriforeningen (the Danish branch of the European battery association EPBA), ITB (the Danish IT Industry Association) and FEHA (the Danish Association for Suppliers of Electrical Domestic Appliances) in a collaboration between the Danish EPA and representatives from the organisations. The guidance applies to companies marketing articles to either private or industrial users in Denmark. The target group is buyers in Danish companies that import or act as commercial agents, intermediaries or retailers, as well as foreign companies that export to Denmark. 2 Content How to limit phthalates of concern in articles? ................................................................... 4 Key to identification of articles with phthalates .................................................................. 8 Facts on phthalates ............................................................................................................................. 10 What should you ask your supplier? .......................................................................................... 11 What are the -
Characterization of Strychnine Binding Sites in the Rodent
CHARACTERIZATION OF STRYCHNINE BINDING SITES IN THE RODENT SPINAL CORD BY VINCENT MAURICE O’CONNOR UNIVERSITY COLLEGE LONDON A thesis submitted for the degree of Doctor of Philosophy from the University of London, 1992. I ProQuest Number: 10608898 All rights reserved INFORMATION TO ALL USERS The quality of this reproduction is dependent upon the quality of the copy submitted. In the unlikely event that the author did not send a com plete manuscript and there are missing pages, these will be noted. Also, if material had to be removed, a note will indicate the deletion. uest ProQuest 10608898 Published by ProQuest LLC(2017). Copyright of the Dissertation is held by the Author. All rights reserved. This work is protected against unauthorized copying under Title 17, United States C ode Microform Edition © ProQuest LLC. ProQuest LLC. 789 East Eisenhower Parkway P.O. Box 1346 Ann Arbor, Ml 48106- 1346 This thesis is dedicated to the select band o f people, including the most recent arrivals and the sorely missed departed, that I hold closest in my affections. "At the end of the day" they make It all worthwhile. Remember, in the words of the famous actor whose name at present escapes me; "Nobody said it would be easy". Although my own feeling is that Nobody was probably wrong. II Thesis abstract The convulsant alkaloid strychnine is a selective and highly potent antagonist at postsynaptic receptor for the inhibitory neurotransmitter glycine . These properties have led to the extensive use of strychnine as a ligand to probe the postsynaptic glycine receptor. Despite the recent increased understanding of the molecular structure of this receptor protein there is still much dispute as to the nature of the interaction between glycine and strychnine. -
A Rapid and Robust Method for Determination of 35 Phthalates in Influent, Effluent and Biosolids from Wastewater Treatment Plants
37th International Symposium on Halogenated Persistent Organic Pollutants Vancouver, Canada August 20-25, 2017 Page 1 – June-14-17 Page 2 – June-14-17 Page 3 – June-14-17 A Rapid and Robust Method for Determination of 35 Phthalates in Influent, Effluent and Biosolids from Wastewater Treatment Plants Tommy BISBICOS, Grazina PACEPAVICIUS and Mehran ALAEE Science and Technology Branch, Environment and Climate Change Canada Burlington, Ontario Canada L7S 1A1 Polyvinyl Chloride (PVC) • PVC was accidentally synthesized in 1835 by French chemist Henri Victor Regnault • Ivan Ostromislensky and Fritz Klatte both attempted to use PVC in commercial products, • But difficulties in processing the rigid, sometimes brittle polymer blocked their efforts. • Waldo Semon and the B.F. Goodrich Company developed a method in 1926 to plasticize PVC by blending it with various additives. • The result was a more flexible and more easily processed material that soon achieved widespread commercial use. From Wikipedia; accessed Oct, 2014 Plasticizers • Most vinyl products contain plasticizers which dramatically improve their performance characteristic. The most common plasticizers are derivatives of phthalic acid. • The materials are selected on their compatibility with the polymer, low volatility levels, and cost. • These materials are usually oily colorless substances that mix well with the PVC particles. • 90% of the plasticizer market is dedicated to PVC • worldwide annual production of phthalates in 2010 was estimated at 4.9 million tones* From Wikipedia; accessed Oct, 2014; and Emanuel C (2011) Plasticizer market update. http://www.cpsc.gov/about/cpsia/chap/spi.pdf (accessed March, 2014). Phthalate Uses • Plasticizers: – Wire and cable, building and construction, flooring, medical, automotive, household etc., • Solvents: – Cosmetics, creams, fragrances, candles, shampoos etc. -
Consumer Safety Compliance Standards for Use with These New Testing Regulations
Your Science Is Our Passion® Consumer Safety Analytical Standards for Consumer Safety Compliance New regulations are constantly being enacted to protect consumers from a variety of potentially dangerous compounds and elements. Recent global regulations have restricted levels of heavy metals in consumer products and waste electronics. Regulations have also been enacted to control a variety of phthalates in children’s products. SPEX CertiPrep has continued to lead the Certified Reference Materials field by creating a line of Consumer Safety Compliance Standards for use with these new testing regulations. For additional product information, please visit www.spexcertiprep.com/inorganic-standards/consumer-safety-standards-inorganic for Inorganic products and www.spexcertiprep.com/organic-standards/consumer-safety-standards-organic for Organic products. Phthalates in Polyvinyl Chloride (PVC) Polyvinyl chloride, or PVC, is a very common plastic used in a wide range of common consumer products, from children’s toys and care items to building and construction materials. In the US, ASTM and the CPSC have designated methods for testing children’s toys and childcare articles for compliance with the restricted use of six designated phthalates: DBP, BBP, DEHP, DNOP, DIDP, and DINP. SPEX CertiPrep is proud to offer the first Certified Reference Materials for phthalates in polyvinyl chloride produced under the guidelines of ISO 9001:2015, ISO/IEC 17025:2017 and ISO 17034:2016. Designed for Methods: • US Methods CPSC-CH-C1001-09.3 • ASTM D7823-13 • EU -
Aldrich Raman
Aldrich Raman Library Listing – 14,033 spectra This library represents the most comprehensive collection of FT-Raman spectral references available. It contains many common chemicals found in the Aldrich Handbook of Fine Chemicals. To create the Aldrich Raman Condensed Phase Library, 14,033 compounds found in the Aldrich Collection of FT-IR Spectra Edition II Library were excited with an Nd:YVO4 laser (1064 nm) using laser powers between 400 - 600 mW, measured at the sample. A Thermo FT-Raman spectrometer (with a Ge detector) was used to collect the Raman spectra. The spectra were saved in Raman Shift format. Aldrich Raman Index Compound Name Index Compound Name 4803 ((1R)-(ENDO,ANTI))-(+)-3- 4246 (+)-3-ISOPROPYL-7A- BROMOCAMPHOR-8- SULFONIC METHYLTETRAHYDRO- ACID, AMMONIUM SALT PYRROLO(2,1-B)OXAZOL-5(6H)- 2207 ((1R)-ENDO)-(+)-3- ONE, BROMOCAMPHOR, 98% 12568 (+)-4-CHOLESTEN-3-ONE, 98% 4804 ((1S)-(ENDO,ANTI))-(-)-3- 3774 (+)-5,6-O-CYCLOHEXYLIDENE-L- BROMOCAMPHOR-8- SULFONIC ASCORBIC ACID, 98% ACID, AMMONIUM SALT 11632 (+)-5-BROMO-2'-DEOXYURIDINE, 2208 ((1S)-ENDO)-(-)-3- 97% BROMOCAMPHOR, 98% 11634 (+)-5-FLUORODEOXYURIDINE, 769 ((1S)-ENDO)-(-)-BORNEOL, 99% 98+% 13454 ((2S,3S)-(+)- 11633 (+)-5-IODO-2'-DEOXYURIDINE, 98% BIS(DIPHENYLPHOSPHINO)- 4228 (+)-6-AMINOPENICILLANIC ACID, BUTANE)(N3-ALLYL)PD(II) CL04, 96% 97 8167 (+)-6-METHOXY-ALPHA-METHYL- 10297 ((3- 2- NAPHTHALENEACETIC ACID, DIMETHYLAMINO)PROPYL)TRIPH 98% ENYL- PHOSPHONIUM BROMIDE, 12586 (+)-ANDROSTA-1,4-DIENE-3,17- 99% DIONE, 98% 13458 ((R)-(+)-2,2'- 963 (+)-ARABINOGALACTAN BIS(DIPHENYLPHOSPHINO)-1,1'- -
C-Metalated Nitriles: Diastereoselective Alkylations and Arylations
Duquesne University Duquesne Scholarship Collection Electronic Theses and Dissertations Fall 12-20-2019 C-Metalated Nitriles: Diastereoselective Alkylations and Arylations Robert John Mycka Duquesne University Follow this and additional works at: https://dsc.duq.edu/etd Part of the Organic Chemistry Commons Recommended Citation Mycka, R. J. (2019). C-Metalated Nitriles: Diastereoselective Alkylations and Arylations (Doctoral dissertation, Duquesne University). Retrieved from https://dsc.duq.edu/etd/1851 This Immediate Access is brought to you for free and open access by Duquesne Scholarship Collection. It has been accepted for inclusion in Electronic Theses and Dissertations by an authorized administrator of Duquesne Scholarship Collection. C-METALATED NITRILES: DIASTEREOSELECTIVE ALKYLATIONS AND ARYLATIONS A Dissertation Submitted to the Bayer School of Natural and Environmental Sciences Duquesne University In partial fulfillment of the requirements for the degree of Doctor of Philosophy By Robert J. Mycka December 2019 Copyright by Robert J. Mycka 2019 C-METALATED NITRILES: DIASTEREOSELECTIVE ALKYLATIONS AND ARYLATIONS By Robert J. Mycka Approved November 13, 2019 ________________________________ ________________________________ Dr. Bruce D. Beaver Dr. Jeffrey D. Evanseck Professor of Chemistry and Biochemistry Professor of Chemistry and Biochemistry (Committee Chair) (Committee Member) ________________________________ ________________________________ Dr. Shahed U. M. Khan Dr. Patrick T. Flaherty Associate Professor of Chemistry and -
WO 2017/004282 Al 5 January 2017 (05.01.2017) P O P C T
(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2017/004282 Al 5 January 2017 (05.01.2017) P O P C T (51) International Patent Classification: (81) Designated States (unless otherwise indicated, for every A61K 8/35 (2006.01) A61K 8/37 (2006.01) kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, (21) International Application Number: BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, PCT/US20 16/040224 DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, (22) International Filing Date: HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, 29 June 2016 (29.06.2016) KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, (25) Filing Language: English PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, (26) Publication Language: English 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. (30) Priority Data: 62/186,240 29 June 2015 (29.06.2015) US (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, (71) Applicant: TAKASAGO INTERNATION CORPORA¬ GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TION (USA) [US/US]; 4 Volvo Drive, Rockleigh, NJ TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, 07647 (US). -
Hazardous Substances in Plastic Materials
TA Hazardous substances in plastic 3017 materials 2013 Prepared by COWI in cooperation with Danish Technological Institute Preface This report is developed within the project of mapping of prioritized hazardous substances in plastic materials. The report presents key information on the most used plastic types and their characteristics and uses, as well as on hazardous substances used in plastics and present on the Norwegian Priority List of hazardous substances (“Prioritetslisten”) and/or the Candidate List under REACH, by August 2012. The aim of the report is to be a brief handbook on plastic types and hazardous substances in plastics providing knowledge on the characteristics and use of different plastic materials and the function, uses, concentration, release patterns, and alternatives of the hazardous substances, allowing the user to use the report as an introduction and overview on the most important hazardous substances in plastics and the plastic types, they primarily are used in. The development of the report has been supervised by a steering committee consisting of: Inger-Grethe England, Klima- og Forurensningsdirektoratet (chairman) Pia Linda Sørensen, Klima- og Forurensningsdirektoratet Erik Hansen, COWI, Denmark Nils H. Nilsson, Danish Technological Institute The report has been prepared by Erik Hansen, COWI-Denmark, Nils H. Nilsson, Danish Technological Institute, Delilah Lithner, COWI-Sweden and Carsten Lassen COWI- Denmark. Vejle, Denmark, 15. January 2013 Erik Hansen, COWI (project manager) 1 Content English Summary and -
Used at Rocky Flats
. TASK 1 REPORT (Rl) IDENTIFICATION OF CHEMICALS AND RADIONUCLIDES USED AT ROCKY FLATS I PROJECT BACKGROUND ChemRisk is conducting a Rocky Flats Toxicologic Review and Dose Reconstruction study for The Colorado Department of Health. The two year study will be completed by the fall of 1992. The ChemRisk study is composed of twelve tasks that represent the first phase of an independent investigation of off-site health risks associated with the operation of the Rocky Flats nuclear weapons plant northwest of Denver. The first eight tasks address the collection of historic information on operations and releases and a detailed dose reconstruction analysis. Tasks 9 through 12 address the compilation of information and communication of the results of the study. Task 1 will involve the creation of an inventory of chemicals and radionuclides that have been present at Rocky Flats. Using this inventory, chemicals and radionuclides of concern will be selected under Task 2, based on such factors as the relative toxicity of the materials, quantities used, how the materials might have been released into the environment, and the likelihood for transport of the materials off-site. An historical activities profile of the plant will be constructed under Task 3. Tasks 4, 5, and 6 will address the identification of where in the facility activities took place, how much of the materials of concern were released to the environment, and where these materials went after the releases. Task 7 addresses historic land-use in the vicinity of the plant and the location of off-site populations potentially affected by releases from Rocky Flats. -
Underactive Thyroid
Underactive Thyroid PDF generated using the open source mwlib toolkit. See http://code.pediapress.com/ for more information. PDF generated at: Thu, 21 Jun 2012 14:27:58 UTC Contents Articles Thyroid 1 Hypothyroidism 14 Nutrition 22 B vitamins 47 Vitamin E 53 Iodine 60 Selenium 75 Omega-6 fatty acid 90 Borage 94 Tyrosine 97 Phytotherapy 103 Fucus vesiculosus 107 Commiphora wightii 110 Nori 112 Desiccated thyroid extract 116 References Article Sources and Contributors 121 Image Sources, Licenses and Contributors 124 Article Licenses License 126 Thyroid 1 Thyroid thyroid Thyroid and parathyroid. Latin glandula thyroidea [1] Gray's subject #272 1269 System Endocrine system Precursor Thyroid diverticulum (an extension of endoderm into 2nd Branchial arch) [2] MeSH Thyroid+Gland [3] Dorlands/Elsevier Thyroid gland The thyroid gland or simply, the thyroid /ˈθaɪrɔɪd/, in vertebrate anatomy, is one of the largest endocrine glands. The thyroid gland is found in the neck, below the thyroid cartilage (which forms the laryngeal prominence, or "Adam's apple"). The isthmus (the bridge between the two lobes of the thyroid) is located inferior to the cricoid cartilage. The thyroid gland controls how quickly the body uses energy, makes proteins, and controls how sensitive the body is to other hormones. It participates in these processes by producing thyroid hormones, the principal ones being triiodothyronine (T ) and thyroxine which can sometimes be referred to as tetraiodothyronine (T ). These hormones 3 4 regulate the rate of metabolism and affect the growth and rate of function of many other systems in the body. T and 3 T are synthesized from both iodine and tyrosine. -
Each Lesson Section Is Divided Into Four Segmentsobjectives, a List of References, Suggested Activities, and ? Content Outline of the Material
DOCUMENT P7SUME ED 049 151 SP 007 022 AUTHOR Eeyer, Frederick Spooner, William Y. TITLE Earth Science. In-Seivice Television Program. INSTITUTION North Carolina State Board of Education, Raleigh. Dept.of Public Instruction. PUB DATE [70] NOTE 325p. EDRS PRICE EDRS Price MF-$0.65 HC-$13.16 DESCRIPTORS *Curriculum Guides, *Earth Science, Geoloyy, *Inservice Teacher Education, Meteorology, Oceanology, *Physical Geography, ',Se,,:ondary Education, Soil Science ABSTRACT GRADES OR AGES: Inservice course for secondary teacners. SUBJECT MATTER: Earth science. ORGANIZATION AND PHYSICAL APPEARANCE: The guide is intended for use with a 32- program television course f)c teachers, with material intended to be used in tne classroom. The introductory material explains the rationale of the course and includes the transmission schedule and bibliography. Each lesson section is divided into four segmentsobjectives, a list of references, suggested activities, and ? content outline of the material. The guide is offset printed and is in a looseleaf binder- OBJECTIVE:. AND ACTIVITIES: The o'cjectives are listed at the beginning of each lesson. Suggested activities arG included in each lesson and are intended to Provide examples of student investigation, demonstrations, or activities which will demonstrate 3 particular concept. INSTRUCTIONAL MATSFIALS: References to relevant printed material are given In each lesson, and other materials ate also referred to in the text. STUDENT ASSESSMENT: No provision is trade for evaluation. (MBM) US OF.TARTMENI OF HEALTH. EN/CA.710N & WE:JAME OFFICE OF EDUCATION THIS DOCLNIENT HAS BEEN REPRO- DUCED EXACTLY AS RECEIVED FROM THE PERSON OR ORGANIZATION OHIG :HATING IT POINTS OF VIEW OR 0.IN ,ONS STATED GO NOT NECESSARILY REPRESENT OFFICIAL OFF/CE OF EDU- CATION POSITION OR POLICY EARTH SCIENCE IN- SERVICE TELEVISION PROGRAM NORTH CAROLINA DEPARTMENT OF PUBLIC INSTRUCTION /RALEIGH PREPARED AND PRESENTED BY FREDERICK L. -
Prohibited and Restricted Chemical List
School Emergency Response Plan and Management Guide Prohibited and Restricted Chemical List PROHIBITED AND RESTRICTED CHEMICAL LIST Introduction After incidents of laboratory chemical contamination at several schools, DCPS, The American Association for the Advancement of Science (AAAS) and DC Fire and Emergency Management Services developed an aggressive program for chemical control to eliminate student and staff exposure to potential hazardous chemicals. Based upon this program, all principals are required to conduct a complete yearly inventory of all chemicals located at each school building to identify for the removal and disposal of any prohibited/banned chemicals. Prohibited chemicals are those that pose an inherent, immediate, and potentially life- threatening risk, injury, or impairment due to toxicity or other chemical properties to students, staff, or other occupants of the school. These chemicals are prohibited from use and/or storage at the school, and the school is prohibited from purchasing or accepting donations of such chemicals. Restricted chemicals are chemicals that are restricted by use and/or quantities. If restricted chemicals are present at the school, each storage location must be addressed in the school's written emergency plan. Also, plan maps must clearly denote the storage locations of these chemicals. Restricted chemicals—demonstration use only are a subclass in the Restricted chemicals list that are limited to instructor demonstration. Students may not participate in handling or preparation of restricted chemicals as part of a demonstration. If Restricted chemicals—demonstration use only are present at the school, each storage location must be addressed in the school's written emergency plan. Section 7: Appendices – October 2009 37 School Emergency Response Plan and Management Guide Prohibited and Restricted Chemical List Following is a table of chemicals that are Prohibited—banned, Restricted—academic curriculum use, and Restricted—demonstration use only.