Top 100 Chemicals List
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Nitric Oxide in Health and Disease of the Nervous System H-Y Yun1,2, VL Dawson1,3,4 and TM Dawson1,3
Molecular Psychiatry (1997) 2, 300–310 1997 Stockton Press All rights reserved 1359–4184/97 $12.00 PROGRESS Nitric oxide in health and disease of the nervous system H-Y Yun1,2, VL Dawson1,3,4 and TM Dawson1,3 Departments of 1Neurology; 3Neuroscience; 4Physiology, Johns Hopkins University School of Medicine, Baltimore, MD, USA Nitric oxide (NO) is a widespread and multifunctional biological messenger molecule. It mediates vasodilation of blood vessels, host defence against infectious agents and tumors, and neurotransmission of the central and peripheral nervous systems. In the nervous system, NO is generated by three nitric oxide synthase (NOS) isoforms (neuronal, endothelial and immunologic NOS). Endothelial NOS and neuronal NOS are constitutively expressed and acti- vated by elevated intracellular calcium, whereas immunologic NOS is inducible with new RNA and protein synthesis upon immune stimulation. Neuronal NOS can be transcriptionally induced under conditions such as neuronal development and injury. NO may play a role not only in physiologic neuronal functions such as neurotransmitter release, neural development, regeneration, synaptic plasticity and regulation of gene expression but also in a variety of neurological disorders in which excessive production of NO leads to neural injury. Keywords: nitric oxide synthase; endothelium-derived relaxing factor; neurotransmission; neurotoxic- ity; neurological diseases Nitric oxide is probably the smallest and most versatile NO synthases isoforms and regulation of NO bioactive molecule identified. Convergence of multi- generation disciplinary efforts in the field of immunology, cardio- vascular pharmacology, chemistry, toxicology and neu- NO is formed by the enzymatic conversion of the guan- robiology led to the revolutionary novel concept of NO idino nitrogen of l-arginine by NO synthase (NOS). -
(HDS) Unit for Petroleum Naphtha at 3500 Barrels Per Day
Available online at www.worldscientificnews.com WSN 9 (2015) 88-100 EISSN 2392-2192 Design Parameters for a Hydro desulfurization (HDS) Unit for Petroleum Naphtha at 3500 Barrels per Day Debajyoti Bose University of Petroleum & Energy Studies, College of Engineering Studies, P.O. Bidholi via- Prem Nagar, Dehradun 248007, India E-mail address: [email protected] ABSTRACT The present work reviews the setting up of a hydrodesulphurization unit for petroleum naphtha. Estimating all the properties of the given petroleum fraction including its density, viscosity and other parameters. The process flow sheet which gives the idea of necessary equipment to be installed, then performing all material and energy balance calculations along with chemical and mechanical design for the entire setup taking into account every instrument considered. The purpose of this review paper takes involves an industrial process, a catalytic chemical process widely used to remove sulfur (S) from naphtha. Keywords: hydro desulfurization, naphtha, petroleum, sulfur Relevance to Design Practice - The purpose of removing the sulfur is to reduce the sulfur dioxide emissions that result from using those fuels in automotive vehicles, aircraft, railroad locomotives, gas or oil burning power plants, residential and industrial furnaces, and other forms of fuel combustion. World Scientific News 9 (2015) 88-100 1. INTRODUCTION Hydrodesulphurization (HDS) is a catalytic chemical process widely used to remove sulfur (S) from natural gas and from refined petroleum products such as gasoline or petrol, jet fuel, kerosene, diesel fuel, and fuel oils. The purpose of removing the sulfur is to reduce the sulfur dioxide (SO2) emissions that result from various combustion practices. -
EPA Listed Wastes Table 1: Maximum Concentration of Contaminants For
EPA Listed Wastes Table 1: Maximum concentration of contaminants for the toxicity characteristic, as determined by the TCLP (D list) Regulatory HW No. Contaminant CAS No. Level (mg/L) D004 Arsenic 7440-38-2 5.0 D005 Barium 7440-39-3 100.0 D0018 Benzene 71-43-2 0.5 D006 Cadmium 7440-43-9 1.0 D019 Carbon tetrachloride 56-23-5 0.5 D020 Chlordane 57-74-9 0.03 D021 Chlorobenzene 108-90-7 100.0 D022 Chloroform 67-66-3 6.0 D007 Chromium 7440-47-3 5.0 D023 o-Cresol 95-48-7 200.0** D024 m-Cresol 108-39-4 200.0** D025 p-Cresol 106-44-5 200.0** D026 Cresol ------------ 200.0** D016 2,4-D 94-75-7 10.0 D027 1,4-Dichlorobenzene 106-46-7 7.5 D028 1,2-Dichloroethane 107-06-2 0.5 D029 1,1-Dichloroethylene 75-35-4 0.7 D030 2,4-Dinitrotoluene 121-14-2 0.13* D012 Endrin 72-20-8 0.02 D031 Heptachlor 76-44-8 0.008 D032 Hexachlorobenzene 118-74-1 0.13* D033 Hexachlorobutadiene 87-68-3 0.5 D034 Hexachloroethane 67-72-1 3.0 D008 Lead 7439-92-1 5.0 D013 Lindane 58-89-9 0.4 D009 Mercury 7439-97-6 0.2 D014 Methoxychlor 72-43-5 10.0 D035 Methyl ethyl ketone 78-93-3 200.0 D036 Nitrobenzene 98-95-3 2.0 D037 Pentachlorophenol 87-86-5 100.0 D038 Pyridine 110-86-1 5.0* D010 Selenium 7782-49-2 1.0 D011 Silver 7740-22-4 5.0 D039 Tetrachloroethylene 127-18-4 0.7 D015 Toxaphene 8001-35-2 0.5 D040 Trichloroethylene 79-01-6 0.5 D041 2,4,5-Trichlorophenol 95-95-4 400.0 D042 2,4,6-Trichlorophenol 88-06-2 2.0 D017 2,4,5-TP (Silvex) 93-72-1 1.0 D043 Vinyl Chloride 74-01-4 0.2 * Quantitation limit is greater than the calculated regulatory level. -
Material Safety Data Sheet
MATERIAL NAME: Heavy Straight MSDS # EPL-13 Run Naphtha MATERIAL SAFETY DATA SHEET SECTION 1 X PRODUCT AND COMPANY IDENTIFICATION FOR EMERGENCY SOURCE INFORMATION CONTACT: Explorer Pipeline Company ¾ (918) 493 - 5100 6846 South Canton ¾ CHEMTREC: (800) 424-9300 (24 hour contact) P.O. Box 2650 ¾ CANUTEC: (613) 996-6666 Tulsa, Oklahoma 74101 ¾ SETIQ: 91-800-00214 TRADE NAMES/SYNONYMS: Penex CHEMICAL FAMILY: Mixture of C - 4 EPL Code: 10 Raffinate C6, Hydrocarbons This material safety data sheet represents the composite characteristics and properties of fungible petroleum hydrocarbons and other related substances transported by explorer pipeline company. The information presented was compiled from one or more product shipper sources and is intended to provide health and safety guidance for these fungible products. Individual shipper and manufacturer MSDSs are available at Explorer Pipeline Company’s, Tulsa, Oklahoma, offices. SECTION 2 ; HAZARDS IDENTIFICATION )))))))))))))))))EMERGENCY OVERVIEW))))))))))))))))) Flammable Liquid!! ¾ Clear liquid with petroleum odor; ¾ Harmful or fatal if swallowed, inhaled or absorbed through skin. ¾ May cause CNS depression. ¾ Can produce skin irritation upon prolonged or repeated contact. ¾ Keep away from heat, sparks and open flame; ¾ Wash thoroughly after handling; ¾ Contains petroleum distillates! If swallowed, do not induce vomiting since aspiration into the lungs will cause chemical pneumonia; ¾ Avoid breathing vapors or mist; ¾ Use only with adequate ventilation; and ¾ Obtain prompt medical attention. Keep Out of Reach of Children! )))))))))))))))))))))))))))))))))))))))))))))) SECTION 3 W COMPOSITION/INFORMATION OF INGREDIENTS INGREDIENT CAS NUMBER PERCENTAGE (%) Mixture of C4-C6 hydrocarbons 64741-70-4 100% ACUTE SUMMARY OF ACUTE HAZARDS: Harmful or fatal if swallowed, inhaled or absorbed through the skin. May cause CNS depression. -
Platinum Catalysts in Petroleum Refining
Platinum Catalysts in Petroleum Refining By S. W. Curry, B.s., M.B.A. Universal Oil Products Company, Des Plnines, Illinois Rejbriiiirig processes using platinunz catalysts have beconie oj- major importance in petroleum rejining during the past seven years. The?. enable the octane rating of naphthas to be greatly increased, am1 cue more economicnl than any other rejiningyrocess for the production of high octane gasoline. In this article the general nature of the processes is described and the Platforniing process is considwed iti iiiore rletnil. Platinum in any form was virtually unused years. The end is by no means in sight, in the petroleum industry until 1949. Then since the trend in octane number requirement, Universal Oil Products Company introduced particularly for automobiles, has continued it on an unprecedented scale as the active to creep upward year by year. catalytic agent in its Platforming process for To have advocated the use of 400 ounces catalytically upgrading low octane petroleum of a noble metal, selling at about $70 per naphthas to high quality products. ounce at that time, in a catalyst charge for a Prior to the installation of the first UOP single small commercial refinery unit, would Platforming unit, platinum was found chiefly doubtless have been branded prior to 1949 in laboratories in the oil industry. In sharp as the impractical idea of a dreamer. UOP's contrast with 1949, platinum today may be announcement surprised many in the oil regarded as a most essential item in the pro- industry for that matter. duction of high octane gasoline for automo- Even after the first Platformer had been biles and piston-engine aircraft. -
Sds – Safety Data Sheet
Effective Date: 08/29/16 Replaces Revision: 07/01/13, 06/29/09 NON-EMERGENCY TELEPHONE 24-HOUR CHEMTREC EMERGENCY TELEPHONE 610-866-4225 800-424-9300 SDS – SAFETY DATA SHEET 1. Identification Product Identifier: PETROLEUM ETHER Synonyms: Ligroin, VM&P Naphtha, Benzin, Petroleum Naphtha, Naphtha ASTM, Petroleum Spirits, Petroleum Ether of varying boiling point ranges from 20 to 75C (68 to 167F) Chemical Formula: Not applicable Recommended Use of the Chemical and Restrictions On Use: Laboratory Reagent Manufacturer / Supplier: Puritan Products; 2290 Avenue A, Bethlehem, PA 18017 Phone: 610-866-4225 Emergency Phone Number: 24-Hour Chemtrec Emergency Telephone 800-424-9300 2. Hazard(s) Identification Classification of the Substance or Mixture: Flammable liquids (Category 2) Germ cell mutagenicity (Category 1B) Carcinogenicity (Category 1A) Aspiration hazard (Category 1) Risk Phrases: R11: Highly flammable. R20: Harmful by inhalation. R22: Harmful if swallowed. R45: May cause cancer. R65: Harmful: may cause lung damage if swallowed. Label Elements: Trade Name: PETROLEUM ETHER Signal Word: Danger Hazard Statements: H225: Highly flammable liquid and vapor. H304: May be fatal if swallowed and enters airways. H340: May cause genetic defects. H350: May cause cancer. PETROLEUM ETHER Page 1 of 6 Precautionary Statements: P201: Obtain special instructions before use. P210: Keep away from heat / sparks / open flames / hot surfaces. No smoking. P301 + P310: IF SWALLOWED: Immediately call a POISON CENTER or doctor / physician. P308 + P313: If exposed or concerned: Get medical advice / attention. P331: DO NOT induce vomiting. 3. Composition / Information on Ingredients CAS Number: 8032-32-4 EC Number: 232-453-7 Index Number: 649-263-00-9 Molecular Weight: 87-114 g/mol Chemical Ingredient CAS Number EC Number Percent Hazardous Characterization Naphtha, VM & P 8032-32-4 232-453-7 90 - 100% Yes Substance 4. -
Marathon Petroleum Naphtha Straight Run Light
SAFETY DATA SHEET SDS ID NO.: 0133MAR020 Revision Date 05/21/2015 1. IDENTIFICATION Product Name: Marathon Petroleum Naphtha, Straight Run Light Synonym: BTX Naphtha; Light Splitter Overhead Naphtha; Light Straight Run Naphtha; Naphtha Light Straight Run Product Code: 0133MAR020 Chemical Family: Aliphatic Naphtha Recommended Use: Feedstock. Restrictions on Use: All others. Manufacturer, Importer, or Responsible Party Name and Address: MARATHON PETROLEUM COMPANY LP 539 South Main Street Findlay, OH 45840 SDS information: 1-419-421-3070 Emergency Telephone: 1-877-627-5463 2. HAZARD IDENTIFICATION Classification OSHA Regulatory Status This chemical is considered hazardous by the 2012 OSHA Hazard Communication Standard (29 CFR 1910.1200) Flammable liquids Category 1 Skin corrosion/irritation Category 2 Germ cell mutagenicity Category 1B Carcinogenicity Category 1A Reproductive toxicity Category 2 Specific target organ toxicity (single exposure) Category 3 Specific target organ toxicity (repeated exposure) Category 1 Category 2 Aspiration toxicity Category 1 Acute aquatic toxicity Category 2 Chronic aquatic toxicity Category 2 Hazards Not Otherwise Classified (HNOC) Static accumulating flammable liquid Label elements EMERGENCY OVERVIEW SDS ID NO.: 0133MAR020 Product name: Marathon Petroleum Naphtha, Straight Run Light Page 1 of 19 0133MAR020 Marathon Petroleum Naphtha, Straight Revision Date 05/21/2015 Run Light _____________________________________________________________________________________________ Danger EXTREMELY FLAMMABLE LIQUID AND -
Rhea Van Gijzel
Eindhoven University of Technology MASTER Energy analysis and plant design for ethylene production from naphtha and natural gas van Gijzel, R.A. Award date: 2017 Link to publication Disclaimer This document contains a student thesis (bachelor's or master's), as authored by a student at Eindhoven University of Technology. Student theses are made available in the TU/e repository upon obtaining the required degree. The grade received is not published on the document as presented in the repository. The required complexity or quality of research of student theses may vary by program, and the required minimum study period may vary in duration. General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. • Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain Process Engineering Multiphase Reactors group (SMR) Department of Chemical Engineering and Chemistry Den Dolech 2, 5612 AZ Eindhoven P.O. Box 513, 5600 MB Eindhoven The Netherlands www.tue.nl Graduation committee Prof. Dr. Ir. M. van Sint Annaland Dr. F. Gallucci Dr. V. Spallina (supervisor) Energy analysis and plant design for ethylene production Dr. T. Noël (external member) I. Campos Velarde from naphtha and natural gas Author R.A. van Gijzel MSc. -
Differential Regulation of Endothelium Behavior by Progesterone and Medroxyprogesterone Acetate
P H CUTINI and others Progestins and vascular function 220:3 179–193 Research Differential regulation of endothelium behavior by progesterone and medroxyprogesterone acetate Pablo H Cutini1,2, Adria´n E Campelo1,2 and Virginia L Massheimer1,2 Correspondence should be addressed 1Ca´ tedra de Bioquı´mica Clı´nica II, Departamento de Biologı´a, Bioquı´mica y Farmacia, Universidad Nacional to V L Massheimer del Sur (UNS), San Juan 670, B8000ICN, Bahı´a Blanca, Argentina Email 2Consejo Nacional de Investigaciones Cientı´ficas y Te´ cnicas (CONICET), Argentina, Buenos Aires, Argentina [email protected] Abstract Medroxyprogesterone acetate (MPA) is a synthetic progestin commonly used in hormone Key Words replacement therapy (HRT). The aim of this research was to study and compare the effect of " cell migration progesterone (Pg) and MPA on the regulation of cellular events associated with vascular " medroxyprogesterone homeostasis and disease. Platelet adhesion to endothelial cells (ECs), nitric oxide (NO) acetate production, and cell migration were studied using murine ECs in vitro exposed to the " nitric oxide progestins. After 7 min of treatment, MPA significantly inhibited NO synthesis with respect " progesterone to control values; meanwhile, Pg markedly increased vasoactive production. In senile ECs, " vascular tissue the stimulatory action of Pg decreases; meanwhile, MPA maintained its ability to inhibit Journal of Endocrinology NO synthesis. The presence of RU486 antagonized the action of each steroid. When ECs were preincubated with PD98059 (MAPK inhibitor) or chelerythrine (protein kinase C (PKC) inhibitor) before Pg or MPA treatment, the former totally suppressed the steroid action, but the PKC antagonist did not affect NO production. -
Progesterone Using ALZET Osmotic Pumps
ALZET® Bibliography References on the Administration of Progesterone Using ALZET Osmotic Pumps Q8558: V. Joseph, et al. Progesterone decreases apnoea and reduces oxidative stress induced by chronic intermittent hypoxia in ovariectomized female rats. Exp Physiol 2020;105(6):1025-1034 Agents: Progesterone Vehicle: Cyclodextrin, 2-ß-Hydroxypropl-; Route: SC; Species: Rat; Pump: 2ML4; Duration: 28 days; ALZET Comments: Dose (4 mg/kg/day); Controls received mp w/ vehicle; animal info (Sprague-Dawley female rats (220-250g/57-70 days old)); post op. care (buprenorphine); Blood pressure measured via tail cuff method;93.3 mmHg - 105.2 mmHg;Progesterone aka prog; dependence; Q6232: S. F. Rosen, et al. T-Cell Mediation of Pregnancy Analgesia Affecting Chronic Pain in Mice. J Neurosci 2017;37(41):9819-9827 ALZET Comments: Estradiol, 17b-; Progesterone sulfate; SC; Mice; 2002; 14 days; Dose (17b-estradiol : 0.1 mg/kg/d, progesterone sulfate: 0.25 mg/kg/d, 0.1 mg/kg/d estradiol + 0.25 mg/kg/d progesterone); Controls received mp w/ vehicle; animal info (7-12 week old female C57BL/6J mice); replacement therapy (estradiol, ovariectomy); Therapeutic indication. Q6066: D. J. Morris, et al. Glucocorticoids and gut bacteria: "The GALF Hypothesis" in the metagenomic era. Steroids 2017;125(1-13 ALZET Comments: Chenodeoxycholic acid, progesterone, 11b-hydroxy-, corticosterone, deoxy-, corticosterone, 3α,5α-TH-, progesterone, 3α,5α-TH-11β-hydroxy-; SC; Rat; steroidal derivatives of corticosterone; Review presents the role of gut microbial metabolism of endogenous adrenocorticosteroids as a contributing factor in the etiology of essential hypertension. Q6204: S. McIlvride, et al. A progesterone-brown fat axis is involved in regulating fetal growth. -
Nitric Oxide Production, Inhibitory, Antioxidant and Antimycobacterial Activities of the Fruits Extract and Flavonoid Content of Schinus Terebinthifolius
Rev Bras Farmacogn 24(2014): 644-650 Original article Nitric oxide production, inhibitory, antioxidant and antimycobacterial activities of the fruits extract and flavonoid content of Schinus terebinthifolius Natalia R. Bernardesa, Marlon Heggdorne-Araújoa,b, Isabela F. J. C. Borgesb,c, Fabricio M. Almeidab, Eduardo P. Amaralb, Elena B. Lasunskaiab, Michelle F. Muzitanob,c,*, Daniela B. Oliveiraa,* aLaboratório de Tecnologia de Alimentos, Centro de Ciências e Tecnologias Agropecuárias, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, Brazil bLaboratório de Biologia do Reconhecer, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, Brazil cLaboratório de Produtos Naturais, Curso de Farmácia, Universidade Federal do Rio de Janeiro, Campus Macaé, Polo Novo Cavaleiro, Instituto Macaé de Metrologia e Tecnologia, Macaé, RJ, Brazil ARTICLE INFO ABSTRACT Article history: The extract of the fruits from Schinus terebinthifolius Raddi, Anacardiaceae, was obtained by Received 28 May 2014 exhaustive extraction with methanol. Its fractions and isolated compounds were collected Accepted 16 October 2014 by fractionation with RP-2 column chromatography. The crude extract, the flavonoid frac- tion and the isolated compound identified as apigenin (1), were investigated regarding its Keywords: inhibitory action of nitric oxide production by LPS-stimulated macrophages, antioxidant Anacardiaceae activity by DPPH and the antimycobacterial activity against Mycobacterium bovis BCG. The Apigenin samples exhibited a significant inhibitory effect on the nitric oxide production (e.g., 1, IC50 Inflammation 19.23 ± 1.64 μg/ml) and also showed antioxidant activity. In addition, S. terebinthifolius sam- Mycobacterium ples inhibited the mycobacterial growth (e.g., 1, IC50 14.53 ± 1.25 μg/ml). -
Steam Cracking: Chemical Engineering
Steam Cracking: Kinetics and Feed Characterisation João Pedro Vilhena de Freitas Moreira Thesis to obtain the Master of Science Degree in Chemical Engineering Supervisors: Professor Doctor Henrique Aníbal Santos de Matos Doctor Štepánˇ Špatenka Examination Committee Chairperson: Professor Doctor Carlos Manuel Faria de Barros Henriques Supervisor: Professor Doctor Henrique Aníbal Santos de Matos Member of the Committee: Specialist Engineer André Alexandre Bravo Ferreira Vilelas November 2015 ii The roots of education are bitter, but the fruit is sweet. – Aristotle All I am I owe to my mother. – George Washington iii iv Acknowledgments To begin with, my deepest thanks to Professor Carla Pinheiro, Professor Henrique Matos and Pro- fessor Costas Pantelides for allowing me to take this internship at Process Systems Enterprise Ltd., London, a seven-month truly worthy experience for both my professional and personal life which I will certainly never forget. I would also like to thank my PSE and IST supervisors, who help me to go through this final journey as a Chemical Engineering student. To Stˇ epˇ an´ and Sreekumar from PSE, thank you so much for your patience, for helping and encouraging me to always keep a positive attitude, even when harder problems arose. To Prof. Henrique who always showed availability to answer my questions and to meet in person whenever possible. Gostaria tambem´ de agradecer aos meus colegas de casa e de curso Andre,´ Frederico, Joana e Miguel, com quem partilhei casa. Foi uma experienciaˆ inesquec´ıvel que atravessamos´ juntos e cer- tamente que a vossa presenc¸a diaria´ apos´ cada dia de trabalho ajudou imenso a aliviar as saudades de casa.