Division of Environmental Chemistry
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Report of the Advisory Group to Recommend Priorities for the IARC Monographs During 2020–2024
IARC Monographs on the Identification of Carcinogenic Hazards to Humans Report of the Advisory Group to Recommend Priorities for the IARC Monographs during 2020–2024 Report of the Advisory Group to Recommend Priorities for the IARC Monographs during 2020–2024 CONTENTS Introduction ................................................................................................................................... 1 Acetaldehyde (CAS No. 75-07-0) ................................................................................................. 3 Acrolein (CAS No. 107-02-8) ....................................................................................................... 4 Acrylamide (CAS No. 79-06-1) .................................................................................................... 5 Acrylonitrile (CAS No. 107-13-1) ................................................................................................ 6 Aflatoxins (CAS No. 1402-68-2) .................................................................................................. 8 Air pollutants and underlying mechanisms for breast cancer ....................................................... 9 Airborne gram-negative bacterial endotoxins ............................................................................. 10 Alachlor (chloroacetanilide herbicide) (CAS No. 15972-60-8) .................................................. 10 Aluminium (CAS No. 7429-90-5) .............................................................................................. 11 -
||||||IIIHHHHHIIIIUSOO539607A United States Patent (19) (11) Patent Number: 5,139,607 Ward Et Al
||||||IIIHHHHHIIIIUSOO539607A United States Patent (19) (11) Patent Number: 5,139,607 Ward et al. 45) Date of Patent: Aug. 18, 1992 54 ALKALINE STRIPPING COMPOSITIONS Attorney, Agent, or Firm-John Lezdey (75) Inventors: Irl E. Ward, Hatfield; Francis W. 57 ABSTRACT Michelotti, Easton, both of Pa. An alkaline positive and negative resist stripping com 73) Assignee: ACT, Inc., Allentown, Pa. position having low volatility and operable at tempera (21) Appl. No.: 690,110 tures less than about 90° C. which comprises, A. about 10 to 30% by weight of tetrahydrofurfuryl (22) Filed: Apr. 23, 1991 alcohol; 51) Int. Cl. ......................... B44C 1/22; B29C 37/00 B. about 5 to 30% by weight of a polyhydric alcohol; 52 U.S. C. .................................... 156/655; 156/668; C. about 10 to 30% by weight of the reaction product of 252/79.5; 430/329 one mole of furfuryl alcohol with about 1 to 20 moles (58) Field of Search............... 252/79.5, 156; 156/655, of an alkylene oxide, 156/659.1, 668; 430/329; 134/22.17, 29, 38, 40 D. about 1 to 30% by weight of a water soluble Bron (56 References Cited stead base type of hydroxide compound, and E. the remainder being water. U.S. PATENT DOCUMENTS The composition comprising a ratio of organic materials 4,078,102 3/1978 Bendz et al. ................... 252/79.5 X 4,686,002 8/1987 Tasset ............................... 156/659.1 to inorganic materials to about 0.25:1 to 3:1. Primary Examiner-William A. Powell 11 Claims, No Drawings 5,139,607 1. -
Chemical and Physical Factors Affecting Combustion in Fuel-Nitric Acid Systems
ASt 412 t?cONFIDENT Copy C C !' 'f RM E58D03 NACA RESEARCH MEMORANDUM CHEMICAL AND PHYSICAL FACTORS AFFECTING COMBUSTION IN FUEL - NITRIC ACID SYSTEMS By Louis Baker,Jr. Lewis Flight Propulsion Laboratory Cleveland, Ohio TO ; 2 L1 ::r LT h :O. 11, 1i ECTI LTE J1 CLASSDOED DOCUMENT This material contains information affecting the National Defense of the United States within the meaning of the espionage laws, Title 18, U.S.C., Secs. 793 and 794, the transmission or revelation of which is acy manner to an unauthorized person Is prohibited by law. NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS WASH I NGTON Ju1y 28, 1958 CONFIDENTIAL Jft NACA RM E58D03 CONFIDENTIAL NATIONAL ADVISORY COM1'tETJE FOR AERONAUTICS RESEARCH MEMORANDUM CIISMICAL AND PISICAL FACTORS AFFECTING COMBUSTION IN FTJEL - NITRIC ACID SYSTEMS* By Louis Baker, Jr. SUMMARY Characteristic exhaust-velocity measurements were made of the JP-4 fuel - red. fuming nitric acid propellant combination in 40-pound-thrust rocket engines with various combustion-chamber lengths from 1.5 to 12.3 inches and. dianieters of 1 and 1.5 inches (characteristic length, 30 to 240 in.). The effect of adding unsymmetrical diniethyihydrazine was de- termined.. Also measured was the effect of added water on the character- istic exhaust velocity of red fuming nitric acid with JP-4, toluene, or hydrazine fuels. The results, along with those from previous studies, are discussed in terms of a vaporization model of combustion. The experimental trends are consistent with the hypothesis that for spontaneously reacting fuels heat generation within mixed fuel-acid droplets can accelerate combus- tion; added water has very specific effects in such cases. -
Chemistry of Natural Resources *OCE/26193* Candidates Answer on the Question Paper
ADVANCED SUBSIDIARY GCE CHEMISTRY B (SALTERS) F332/TEST Chemistry of Natural Resources *OCE/26193* Candidates answer on the question paper. Friday 27 May 2011 Afternoon OCR supplied materials: • Data Sheet for Chemistry B (Salters) (inserted) Duration: 1 hour 45 minutes • Advance Notice: ‘Polymers on the move’ (inserted) Other materials required: • Scientific Calculator *F332TEST* INSTRUCTIONS TO CANDIDATES • The insert will be found in the centre of this document. • Write your name, centre number and candidate number in the boxes above. Please write clearly and in capital letters. • Use black ink. Pencil may be used for graphs and diagrams only. • Read each question carefully. Make sure you know what you have to do before starting your answer. • Write your answer to each question in the space provided. If additional space is required, you should use the lined pages at the end of this booklet. The question number(s) must be clearly shown. • Answer all the questions. • Do not write in the bar codes. INFORMATION FOR CANDIDATES • The number of marks is given in brackets [ ] at the end of each question or part question. • Where you see this icon you will be awarded marks for the quality of written communication in your answer. This means for example you should: • ensure that text is legible and that spelling, punctuation and grammar are accurate so that meaning is clear; • organise information clearly and coherently, using specialist vocabulary when appropriate. • You may use a scientific calculator. • The insert ‘Polymers on the move’ is provided for use with question 5. • A copy of the Data Sheet for Chemistry B (Salters) is provided as an insert with this question paper. -
Kinetics of the Process of Conversion of Production Of
European Journal of Molecular & Clinical Medicine ISSN 2515-8260 Volume 07, Issue 07, 2020 Kinetics Of The Process Of Conversion Of Production Of Calcium Chlorate With The Use Of A Filtrate Of Hydrocaldic Acid Decomposition Of Washed Ck Phosphonic Concentrate Khamdamova Shohida Sherzodovna1, Rozikova Dilshoda Abdullajanovna2 1Doctor of Technical Sciences Associate Professor of the Department of Chemical Technology, Fergana Polytechnic Institute, Fergana Uzbekistan 2Basic doctoral student of the Namangan Engineering and Technological Institute, Namangan, Uzbekistan Abstract: The process of conversion of 20-25% solutions of calcium chloride obtained by decomposition of phosphorites of Central Kizikumes with sodium chlorate at 50, 75, 100 and 125 ° C with evaporation and without evaporation of conversion solutions has been studied. The process activation energies, the order and the rate constant of the conversion reaction as well as kinetic values of the reagent consumption are determined depending on temperature, time and carrying conditions of processes. The order of the conversion process of calcium chloride with sodium chlorate equals one. It is confirmed by the fact that the conversion rate constant calculated on the basis of experimental data remains practically constant for each temperature. Also, the linear dependence of lg (C0-Cτ) on τ also indicates the first order of the conversion process of calcium chloride with sodium chlorate. The rate constant of conversion increases with a rise in temperature. Its dependence on temperature obeys Arrhenius law. To establish values of the conversion rate constant for different temperatures, the constants (К0) for 20 and 25% solutions of calcium chloride have been calculated by Arrhenius equation and the dependence equation of lg K on 1 / T has been derived. -
Selective Synthesis of Furfuryl Alcohol from Biomass-Derived Furfural Using Immobilized Yeast Cells
catalysts Article Selective Synthesis of Furfuryl Alcohol from Biomass-Derived Furfural Using Immobilized Yeast Cells Xue-Ying Zhang 1, Zhong-Hua Xu 1, Min-Hua Zong 1, Chuan-Fu Wang 2 and Ning Li 1,* 1 School of Food Science and Engineering, South China University of Technology, 381 Wushan Road, Guangzhou 510640, China; [email protected] (X.-Y.Z.); [email protected] (Z.-H.X.); [email protected] (M.-H.Z.) 2 National Institute of Clean-and-Low-Carbon Energy, Future Science Park, Beijing 102211, China; [email protected] * Correspondence: [email protected] Received: 19 December 2018; Accepted: 6 January 2019; Published: 10 January 2019 Abstract: Furfuryl alcohol (FA) is an important building block in polymer, food, and pharmaceutical industries. In this work, we reported the biocatalytic reduction of furfural, one of the top value-added bio-based platform chemicals, to FA by immobilized Meyerozyma guilliermondii SC1103 cells. The biocatalytic process was optimized, and the tolerance of this yeast strain toward toxic furfural was evaluated. It was found that furfural of 200 mM could be reduced smoothly to the desired product FA with the conversion of 98% and the selectivity of >98%, while the FA yield was only approximately 81%. The gap between the substrate conversion and the product yield might partially be attributed to the substantial adsorption of the immobilization material (calcium alginate) toward the desired product, but microbial metabolism of furans (as carbon sources) made a negligible contribution to it. In addition, FA of approximately 156 mM was produced within 7 h in a scale-up reaction, along with the formation of trace 2-furoic acid (1 mM) as the byproduct. -
Synthesis of Furfuryl Alcohol from Furfural
Synthesis of Furfuryl Alcohol from Furfural: A Comparison between Batch and Continuous Flow Reactors Maïté Audemar, Yantao Wang, Deyang Zhao, Sébastien Royer, François Jerome, Christophe Len, Karine de Oliveira Vigier To cite this version: Maïté Audemar, Yantao Wang, Deyang Zhao, Sébastien Royer, François Jerome, et al.. Synthesis of Furfuryl Alcohol from Furfural: A Comparison between Batch and Continuous Flow Reactors. Energies, MDPI, 2020, 13 (4), pp.1002. 10.3390/en13041002. hal-03015037 HAL Id: hal-03015037 https://hal.archives-ouvertes.fr/hal-03015037 Submitted on 19 Nov 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. 1 Communication 2 Synthesis of furfuryl alcohol from furfural: a 3 comparison between batch and continuous flow 4 reactors 5 Maïté Audemar 1, Yantao Wang 2,3, Deyang Zhao 2,4, Sébastien Royer,5 François Jérôme,1 6 Christophe Len 2,4 and Karine De Oliveira Vigier 1,* 7 1 Université de Poitiers, IC2MP, UMR CNRS 7285, 1 rue Marcel Doré, 86073 Poitiers Cedex 9; 8 [email protected] 9 2 Sorbonne universités, Université de Technologie de Compiègne, Centre de recherche Royallieu, CS 60 319, 10 F-60203 Compiègne cedex, France 11 3 School of Resources Environmental & Chemical Engineering, Nanchang university, Nanchang, 12 330031,China. -
Six-Year Review 3 Technical Support Document for Chlorate
Six-Year Review 3 Technical Support Document for Chlorate Office of Water (4607M) EPA-810-R-16-013 December 2016 Disclaimer This document is not a regulation. It is not legally enforceable, and does not confer legal rights or impose legal obligations on any party, including EPA, states, or the regulated community. While EPA has made every effort to ensure the accuracy of any references to statutory or regulatory requirements, the obligations of the interested stakeholders are determined by statutes, regulations or other legally binding requirements, not this document. In the event of a conflict between the information in this document and any statute or regulation, this document would not be controlling. This page intentionally left blank. Table of Contents 1 Introduction ................................................................................................................. 1-1 2 Contaminant Background .......................................................................................... 2-1 2.1 Chemical and Physical Properties ................................................................................. 2-1 2.2 Production, Use and Release ......................................................................................... 2-2 2.2.1 Commercial Production and Use in Industry and Agriculture ........................... 2-2 2.2.2 Incidental Production and Release ...................................................................... 2-6 2.3 Environmental Fate ...................................................................................................... -
Material Safety Data Sheet
MATERIAL SAFETY DATA SHEET CALCIUM HYPOCHLORITE, SOLID 1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION Brenntag Canada Inc. WHMIS#: 00020005 43 Jutland Rd. Index: GCD0313/15D Toronto, ON Effective Date: 2015 October 02 M8Z 2G6 (416) 259-8231 Date of Revision: 2015 October 02 Website: http://www.brenntag.ca EMERGENCY TELEPHONE NUMBER (For Emergencies Involving Chemical Spills or Releases) 1 855 273 6824 PRODUCT IDENTIFICATION Product Name: Calcium Hypochlorite, Solid. Chemical Name: Hypochlorous acid, calcium salt. Synonyms: HTH Dry Chlorine Granular; Calcium Hypochlorite Granular; Calcium Hypo; Calcium Hypo Pitchl Gran 65%; Cal Hypo Comm 65% Tabs; Calcium Hypo PPG 3" Tabs; Accu-Tab White, Blue, SI, Blue SI, White SI Tabs. Chemical Family: Hypochlorous acid salt. Molecular Formula: Ca (ClO) 2. Product Use: Swimming pool water disinfectant. Water treatment. Oxidizing agent. Chemical intermediate. WHMIS Classification / Symbol: C: Oxidizer E: Corrosive READ THE ENTIRE MSDS FOR THE COMPLETE HAZARD EVALUATION OF THIS PRODUCT. 2. COMPOSITION, INFORMATION ON INGREDIENTS (Not Intended As Specifications) Ingredient CAS# ACGIH TLV (TWA) % Concentration Calcium Hypochlorite 7778-54-3 --- 60 - 80 Sodium Chloride 7647-14-5 --- 10 - 30 Calcium Carbonate 471-34-1 --- 1 - 5 Calcium Hydroxide 1305-62-0 5 mg/m³ 1 - 5 Calcium Chlorate 10137-74-3 --- 0 - 3 3. HAZARDS IDENTIFICATION Calcium Hypochlorite, Solid Brenntag Canada Inc. WHMIS Number : 00020005 Date of Revision: 2015 October 02 Page 2 of 9 EMERGENCY OVERVIEW: Corrosive! Causes severe skin and eye burns. Dust is extremely irritating to respiratory tract. See "Other Health Effects" Section. Oxidizing material. Contact with other combustible material can cause fire. This material is a strong oxidizer which is stable under normal conditions, but can decompose if contaminated. -
Ap Chemistry Summer Assignment
AP CHEMISTRY SUMMER ASSIGNMENT For: Students enrolled in 2018-2019 AP Chemistry Course From: Mrs. Vanessa Urteaga (L-154) Google Classroom Code: 239n0q This assignment is a review of things you should have mastered in Chemistry I or Pre-AP Chemistry. This assignment will be collected for a grade with the first half of it due July 20th, 2018 and the second half due August 17th, 2018. We will spend the first couple weeks of school to review prior content. If you have any questions please do not hesitate to contact me at the email address [email protected]. Welcome to AP Chemistry! I am very excited to have you enrolled in my class and cannot wait to get started! AP chemistry is a difficult course, but with some motivation and determination we will succeed! I am assigning a summer assignment because I need you ready for the start of the school year by reviewing the things you should have learned in Chemistry I or Pre-AP Chemistry. Remember this course is designed to match a first year college chemistry class…(YAY!!) I am extremely excited and I am sure we will have a fantastic year in AP Chemistry. (The summer assignment can also be found on the South Grand Prairie High School webpage, select Departments and Chemistry.) SUMMER ASSIGNMENT This summer assignment consists of worksheets and rules to memorize. There are three (3) worksheets total. • Worksheet #1 and #2 are due July 20th, 2018 via Google Classroom (take pic & upload). • Worksheet #3 is due August 17th, 2018 via Google Classroom (take a pic and upload). -
Chemical Compatibility Chart
Appendix D Chemical Compatibility Chart Below is a chart adapted from the CRC Laboratory Handbook which groups various chemicals into 23 groups with examples and incompatible chemical groups. This chart is by no means complete but it will aid in making decisions about storage. For more complete information please refer to the MSDS for the specific chemical. Group Name Example Incompatible Groups Group Inorganic Hydrochloric acid 2,3,4,5,6,7,8,10,13,14,16,17,18,19,21,22,23 1: Acids Hydrofluoric acid Nitric acid Sulfuric acid Group Organic acids Acetic acid 1,3,4,7,14,16,17,18,19,22 2: Butyric acid Formic acid Propionic acid Group Caustics Sodium hydroxide 1,2,6,7,8,13,14,15,16,17,18,20,23 3: Ammonium hydroxide solution Group Amines and Aminoethylethanolamine 1,2,5,7,8,13,14,15,16,17,18,23 4: Alkanolamines Aniline Diethanolamine Diethylamine Ethylenediamine Monoethanolamine Triethanolamine Triethylamine Triethylenetetramine Group Halogenated Carbon tetrachloride 1,3,4,11,14,17 5: Compounds Chlorobenzene Chloroform Methylene chloride Carbon Tetrachloride 1,2,4-Trichlorobenzene 1,1,1-Trichloroethane Trichloroethylene Trichlorofluoromethane Group Alcohols 1,4-Butanediol 1,7,14,16,20,23 6: Butanol (iso, n, sec, tert) Glycols Diethylene glycol Ethyl alcohol Ethyl butanol Glycol Ether Ethylene glycol Furfuryl alcohol Isoamyl alcohol Methyl alcohol Propylene glycol Group Aldehydes Acrolein 1,2,3,4,6,8,15,16,17,19,20,23 7: Acetaldehyde Butyraldehyde Formaldehyde Paraformaldehyde Propionaldehyde Appendix D Page 1 of 2 Group Ketones Acetone 1,3,4,7,19,20 -
Conversion of Furfuryl Alcohol Into Ethyl Levulinate Over Glucose-Derived Carbon-Based Solid Acid in Ethanol
molecules Article Conversion of Furfuryl Alcohol into Ethyl Levulinate over Glucose-Derived Carbon-Based Solid Acid in Ethanol Geng Zhao 1,*, Ming Liu 1, Xinkui Xia 2, Li Li 1 and Bayin Xu 1 1 Analysis and Testing Center, College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, Henan, China; [email protected] (M.L.); [email protected] (L.L.); [email protected] (B.X.) 2 College of Food Science, Xinyang Agriculture and Forestry University, Xinyang 464000, Henan, China; [email protected] * Correspondence: [email protected]; Tel.: +86-376-639-3155 Received: 27 March 2019; Accepted: 15 May 2019; Published: 16 May 2019 Abstract: In this study, a carbon-based solid acid was created through the sulfonation of carbon obtained from the hydrothermal pretreatment of glucose. Additionally, ethyl levulinate, a viable liquid biofuel, was produced from furfuryl alcohol using the environmentally benign and low-cost catalyst in ethanol. Studies for optimizing the reaction conditions, such as reaction time, temperature, and catalyst loading, were performed. Under the optimal conditions, a maximum ethyl levulinate yield of 67.1% was obtained. The recovered catalyst activity (Ethyl levulinate yield 57.3%) remained high after being used four times, and it was easily regenerated with a simple sulfonation process. Moreover, the catalyst was characterized using FT-IR, XRD, SEM, elemental analysis, and acid-base titration techniques. Keywords: furfuryl alcohol; ethanol; ethyl levulinate; carbon-based solid acid 1. Introduction Because of the recent diminishment of fossil fuel resources, as well as environmental degradation resulting from greenhouse gas emissions, significant effort has been devoted to converting renewable biomass into liquid fuels, fuel additives, and organic bulk chemicals [1–3].