Array Biosensor for the Detection of Organophosphates
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Organophosphate Poisoning : a Review
120 Sinha and Sharma Med J Indones Organophosphate poisoning : A review Parmod K. Sinha, Ashok Sharma Abstrak Pestisida organofosfat digunakan secara luas di seluruh dunia. Keracunan oleh bahan ini merupakan masalah kesehatan masyarakat, terutama di negara berkembang. Zat neurotoksik organofosfat merupakan bahan yang dianggap mengancam dalam bidang militer dan terorisme. Mekanisme toksisitas bahan ini adalah dengan cara menghambat asetilkolinesterase yang mengakibatkan menumpuknya neurotransmitor asetilkolin dan terjadi rangsangan terus-menerus pada reseptor asetilkolin pada sistem saraf sentral maupun perifer. Selain krisis kolinergik, organofosfat dapat menimbulkan berbagai sindrom neurologis, baik akut maupun kronik. Sedangkan gejala peralihan ( intermediate) terjadi 1-4 hari setelah krisis kolinergik teratasi. Pengobatan standar terdiri dari reaktivasi asetilkolinesterase dengan antidot golongan oksim (prolidoksim, oksidoksime, HI-6 dan HLo7), dan pengendalian efek biokimia asetilkolin dengan menggunakan atropin. Golongan oksim yang baru HI-6 dan Hlo7 merupakan reaktivator asetilkolinesterase yang lebih cocok dan efektif untuk keracunan akut dan berat dibandingkan dengan prolidoksim dan obidoksim. Penderita yang mendapat pengobatan segera, biasanya dapat sembuh dari toksisitas akut, namun gejala neurologis ikutan dapat saja terjadi. (Med J Indones 2003; 12: 120-6) Abstract Organophosphate pesticides are used extensively worldwide, and poisoning by these agents, particularly in developing nations is a public health problem. Organophosphorous -
Guide No. 1 – October 2020 2/12 the CONCEPT and IMPLEMENTATION of CPA GUIDANCE RESIDUE LEVELS
Cooperation Centre for Scientific Research Relative to Tobacco CORESTA GUIDE N° 1 The Concept and Implementation of CPA Guidance Residue Levels October 2020 Agro-Chemical Advisory Committee CORESTA TECHNICAL GUIDE N° 1 Title: The Concept and Implementation of CPA Guidance Residue Levels Status: Valid Note: This document will be periodically reviewed by CORESTA Document history: Date of review Information July 2003 Version 1 GRL for Pyrethrins () and Terbufos corrected. December 2003 CPA terminology corrected. June 2008 Version 2 – GRLs revised and residue definitions added Provisional GRL of 2.00 ppm for Cyfluthrin to replace previous June 2010 GRL of 0.50 ppm July 2013 Version 3 – GRLs revised October 2013 Note for Maleic Hydrazide revised Version 4 – GRLs revised + clarification that scope of GRLs July 2016 applies predominantly to the production of traditional cigarette tobaccos and GAP associated with their cultivation. June 2018 Fluopyram GRL of 5 ppm added to GRL list Version 5 – Nine new CPAs with GRL added to list. November 2019 Revision of GRLs for Chlorantraniliprole and Indoxacarb. Updated web links. October 2020 Version 6 – Flupyradifurone GRL of 21 ppm added to GRL list. CORESTA Guide No. 1 – October 2020 2/12 THE CONCEPT AND IMPLEMENTATION OF CPA GUIDANCE RESIDUE LEVELS Executive Summary • Guidance Residue Levels (GRLs) are in the remit of the Agro-Chemical Advisory Committee (ACAC) of CORESTA. Their development is a joint activity of all ACAC members, who represent the leaf production, processing and manufacturing sectors of the Tobacco Industry. The concept of GRLs and their implementation are described in this guide. • GRLs provide guidance to tobacco growers and assist with interpretation and evaluation of results from analyses of residues of Crop Protection Agents (CPAs*). -
2018 Treated Water Undetected Chemical Contaminant List
2018 Treated Water Undetected Chemical Contaminant List ESTROGENS AND OTHER HORMONES Diethylstilbestrol (DES) Estrone 17alpha-Estradiol 17alpha-Ethynal estradiol 17beta-Estradiol Progesterone Estriol cis-Testosterone trans-Testosterone INORGANIC CHEMICALS Antimony Niobium Arsenic Osmium Beryllium Palladium Cadmium Platinum Cerium Praseodymium Cesium Rhenium Cobalt Rhodium Cyanide Ruthenium Dysprosium Samarium Erbium Selenium Europium Silver Gadolinium Tantalum Gallium Tellurium Germanium Thallium Gold Thorium Hafnium Thulium Holmium Tin Iridium Titanium Lanthanum Tungsten Lead Uranium Lutetium Vanadium Mercury Ytterbium Molybdenum Zinc Neodymium Zirconium Nickel NITROSAMINES N-Nitropyrrolidine (NPYR) N-Nitrosomorpholine (NMOR) N-Nitrosodi-N-butylamine (NDBA) N-Nitrosodiphenylamine (NDPhA) N-Nitrosodiethylamine (NDEA) N-Nitrosodi-N-propylamine (NDPA) N-Nitrosodimethylamine (NDMA) N-Nitrosomethylethylamine (NMEA) N-Nitrosopiperidine (NPIP) 1 ORGANIC CHEMICALS Acenaphthene Butylbenzylphthalate Acenaphthylene Butyraldehyde (Butanal) Acetaldehyde Carbaryl Acetochlor Carbofuran Acetone Carbon disulfide Acrylamide Carbophenothion Acrylonitrile Carbon tetrachloride Alachlor Carboxin Aldicarb (Temik) Chlordane Aldicarb sulfone Chlordane, alpha Aldicarb sulfoxide Chlordane, gamma Aldrin Chlorfenvinphos Allyl chloride Chloroacetonitrile Tert-Amyl Methyl ether Chlorobenzene Ametryn Chlorobenzilate Anilizine 2-Chlorobiphenyl Anthracene 1-Chlorobutane Aspon Chloroethane Atraton Chloromethane Atrazine Chloroneb Azinphos-ethyl Chloroprene Azinphos-methyl -
2002 NRP Section 6, Tables 6.1 Through
Table 6.1 Scoring Table for Pesticides 2002 FSIS NRP, Domestic Monitoring Plan } +1 0.05] COMPOUND/COMPOUND CLASS * ) (EPA) (EPA) (EPA) (EPA) (EPA) (FSIS) (FSIS) PSI (P) TOX.(T) L-1 HIST. VIOL. BIOCON. (B) {[( (2*R+P+B)/4]*T} REG. CON. (R) * ENDO. DISRUP. LACK INFO. (L) LACK INFO. {[ Benzimidazole Pesticides in FSIS Benzimidazole MRM (5- 131434312.1 hydroxythiabendazole, benomyl (as carbendazim), thiabendazole) Carbamates in FSIS Carbamate MRM (aldicarb, aldicarb sulfoxide, NA44234416.1 aldicarb sulfone, carbaryl, carbofuran, carbofuran 3-hydroxy) Carbamates NOT in FSIS Carbamate MRM (carbaryl 5,6-dihydroxy, chlorpropham, propham, thiobencarb, 4-chlorobenzylmethylsulfone,4- NT 4 1 3 NV 4 4 13.8 chlorobenzylmethylsulfone sulfoxide) CHC's and COP's in FSIS CHC/COP MRM (HCB, alpha-BHC, lindane, heptachlor, dieldrin, aldrin, endrin, ronnel, linuron, oxychlordane, chlorpyrifos, nonachlor, heptachlor epoxide A, heptachlor epoxide B, endosulfan I, endosulfan I sulfate, endosulfan II, trans- chlordane, cis-chlordane, chlorfenvinphos, p,p'-DDE, p, p'-TDE, o,p'- 3444NV4116.0 DDT, p,p'-DDT, carbophenothion, captan, tetrachlorvinphos [stirofos], kepone, mirex, methoxychlor, phosalone, coumaphos-O, coumaphos-S, toxaphene, famphur, PCB 1242, PCB 1248, PCB 1254, PCB 1260, dicofol*, PBBs*, polybrominated diphenyl ethers*, deltamethrin*) (*identification only) COP's and OP's NOT in FSIS CHC/COP MRM (azinphos-methyl, azinphos-methyl oxon, chlorpyrifos, coumaphos, coumaphos oxon, diazinon, diazinon oxon, diazinon met G-27550, dichlorvos, dimethoate, dimethoate -
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. -
Lifetime Organophosphorous Insecticide Use Among Private Pesticide Applicators in the Agricultural Health Study
Journal of Exposure Science and Environmental Epidemiology (2012) 22, 584 -- 592 & 2012 Nature America, Inc. All rights reserved 1559-0631/12 www.nature.com/jes ORIGINAL ARTICLE Lifetime organophosphorous insecticide use among private pesticide applicators in the Agricultural Health Study Jane A. Hoppin1, Stuart Long2, David M. Umbach3, Jay H. Lubin4, Sarah E. Starks5, Fred Gerr5, Kent Thomas6, Cynthia J. Hines7, Scott Weichenthal8, Freya Kamel1, Stella Koutros9, Michael Alavanja9, Laura E. Beane Freeman9 and Dale P. Sandler1 Organophosphorous insecticides (OPs) are the most commonly used insecticides in US agriculture, but little information is available regarding specific OP use by individual farmers. We describe OP use for licensed private pesticide applicators from Iowa and North Carolina in the Agricultural Health Study (AHS) using lifetime pesticide use data from 701 randomly selected male participants collected at three time periods. Of 27 OPs studied, 20 were used by 41%. Overall, 95% had ever applied at least one OP. The median number of different OPs used was 4 (maximum ¼ 13). Malathion was the most commonly used OP (74%) followed by chlorpyrifos (54%). OP use declined over time. At the first interview (1993--1997), 68% of participants had applied OPs in the past year; by the last interview (2005--2007), only 42% had. Similarly, median annual application days of OPs declined from 13.5 to 6 days. Although OP use was common, the specific OPs used varied by state, time period, and individual. Much of the variability in OP use was associated with the choice of OP, rather than the frequency or duration of application. -
The List of Extremely Hazardous Substances)
APPENDIX A (THE LIST OF EXTREMELY HAZARDOUS SUBSTANCES) THRESHOLD REPORTABLE INVENTORY RELEASE QUANTITY QUANTITY CAS NUMBER CHEMICAL NAME (POUNDS) (POUNDS) 75-86-5 ACETONE CYANOHYDRIN 500 10 1752-30-3 ACETONE THIOSEMICARBAZIDE 500/500 1,000 107-02-8 ACROLEIN 500 1 79-06-1 ACRYLAMIDE 500/500 5,000 107-13-1 ACRYLONITRILE 500 100 814-68-6 ACRYLYL CHLORIDE 100 100 111-69-3 ADIPONITRILE 500 1,000 116-06-3 ALDICARB 100/500 1 309-00-2 ALDRIN 500/500 1 107-18-6 ALLYL ALCOHOL 500 100 107-11-9 ALLYLAMINE 500 500 20859-73-8 ALUMINUM PHOSPHIDE 500 100 54-62-6 AMINOPTERIN 500/500 500 78-53-5 AMITON 500 500 3734-97-2 AMITON OXALATE 100/500 100 7664-41-7 AMMONIA 500 100 300-62-9 AMPHETAMINE 500 1,000 62-53-3 ANILINE 500 5,000 88-05-1 ANILINE,2,4,6-TRIMETHYL- 500 500 7783-70-2 ANTIMONY PENTAFLUORIDE 500 500 1397-94-0 ANTIMYCIN A 500/500 1,000 86-88-4 ANTU 500/500 100 1303-28-2 ARSENIC PENTOXIDE 100/500 1 THRESHOLD REPORTABLE INVENTORY RELEASE QUANTITY QUANTITY CAS NUMBER CHEMICAL NAME (POUNDS) (POUNDS) 1327-53-3 ARSENOUS OXIDE 100/500 1 7784-34-1 ARSENOUS TRICHLORIDE 500 1 7784-42-1 ARSINE 100 100 2642-71-9 AZINPHOS-ETHYL 100/500 100 86-50-0 AZINPHOS-METHYL 10/500 1 98-87-3 BENZAL CHLORIDE 500 5,000 98-16-8 BENZENAMINE, 3-(TRIFLUOROMETHYL)- 500 500 100-14-1 BENZENE, 1-(CHLOROMETHYL)-4-NITRO- 500/500 500 98-05-5 BENZENEARSONIC ACID 10/500 10 3615-21-2 BENZIMIDAZOLE, 4,5-DICHLORO-2-(TRI- 500/500 500 FLUOROMETHYL)- 98-07-7 BENZOTRICHLORIDE 100 10 100-44-7 BENZYL CHLORIDE 500 100 140-29-4 BENZYL CYANIDE 500 500 15271-41-7 BICYCLO[2.2.1]HEPTANE-2-CARBONITRILE,5- -
Malathion Human Health and Ecological Risk Assessment Final Report
SERA TR-052-02-02c Malathion Human Health and Ecological Risk Assessment Final Report Submitted to: Paul Mistretta, COR USDA/Forest Service, Southern Region 1720 Peachtree RD, NW Atlanta, Georgia 30309 USDA Forest Service Contract: AG-3187-C-06-0010 USDA Forest Order Number: AG-43ZP-D-06-0012 SERA Internal Task No. 52-02 Submitted by: Patrick R. Durkin Syracuse Environmental Research Associates, Inc. 5100 Highbridge St., 42C Fayetteville, New York 13066-0950 Fax: (315) 637-0445 E-Mail: [email protected] Home Page: www.sera-inc.com May 12, 2008 Table of Contents Table of Contents............................................................................................................................ ii List of Figures................................................................................................................................. v List of Tables ................................................................................................................................. vi List of Appendices ......................................................................................................................... vi List of Attachments........................................................................................................................ vi ACRONYMS, ABBREVIATIONS, AND SYMBOLS ............................................................... vii COMMON UNIT CONVERSIONS AND ABBREVIATIONS.................................................... x CONVERSION OF SCIENTIFIC NOTATION .......................................................................... -
Biodetoxification of Coumaphos Insecticide Using Immobilized Escherichia Coli Expressing Organophosphorus Hydrolase Enzyme on Cell Surface
Biotechnol. Bioprocess Eng. 2000, 5: 436-440 Biodetoxification of Coumaphos Insecticide Using Immobilized Escherichia coli Expressing Organophosphorus Hydrolase Enzyme on Cell Surface Ayman H. Mansee2, Wilfred Chen1, and Ashok Mulchandani1* 1 Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521, USA 2 On leave from Pesticide Chemistry Department, Faculty of Agriculture (El-Shatby), Alexandria University, Alexandria, Egypt Abstract Recently, we reported an improved technology for the degradation of organophos- phate nerve agents using whole cells of genetically engineered Escherichia coli that anchored and displayed the enzyme organophosphorus hydrolase on the cell surface. In this paper we report the immobilization of these cells on highly porous sintered glass beads and the subse- quent application of the immobilized cell in a continuous-flow packed bed bioreactor for the biodetoxification of a widely used insecticide, coumaphos. Keywords: OPH, pesticides, nerve agents, bioreactor, porous sintered glass beads INTRODUCTION (APHIS) operates a Tick Eradication Program designed to prevent the re-introduction of Cattle Fever into the Neurotoxic organophosphates (OPs), amongst the United States through ticks (Boophilus microplus and most toxic compound known, are widely used as pesti- Boophilus annulatus) on cattle imported from Mexico. cides, insecticides and chemical warfare agents. In the The primary tool used in the eradication program is a United States annually over 40 million kg of organo- series of dipping vats placed at the border crossing phosphate pesticides are consumed [1] while another 20 points. Cattle coming in from Mexico must be dipped million kg are produced for export [2]. Chlorpyrifos in vats before entering the US. Currently, coumaphos is (lorsban) and parathion are two of most popular pesti- the pesticide of choice for this application. -
Use the Decision Was Signed on the Same Day As the Completion of the OP Cumulative Assessment
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY WASHINGTON D.C., 20460 OFFICE OF PREVENTION, PESTICIDES AND TOXIC SUBSTANCES MEMORANDUM DATE: July 31, 2006 SUBJECT: Finalization of Interim Reregistration Eligibility Decisions (IREDs) and Interim Tolerance Reassessment and Risk Management Decisions (TREDs) for the Organophosphate Pesticides, and Completion of the Tolerance Reassessment and Reregistration Eligibility Process for the Organophosphate Pesticides FROM: Debra Edwards, Director Special Review and Reregistration Division Office of Pesticide Programs TO: Jim Jones, Director Office of Pesticide Programs As you know, EPA has completed its assessment of the cumulative risks from the organophosphate (OP) class of pesticides as required by the Food Quality Protection Act of 1996. In addition, the individual OPs have also been subject to review through the individual- chemical review process. The Agency’s review of individual OPs has resulted in the issuance of Interim Reregistration Eligibility Decisions (IREDs) for 22 OPs, interim Tolerance Reassessment and Risk Management Decisions (TREDs) for 8 OPs, and a Reregistration Eligibility Decision (RED) for one OP, malathion.1 These 31 OPs are listed in Appendix A. EPA has concluded, after completing its assessment of the cumulative risks associated with exposures to all of the OPs, that: (1) the pesticides covered by the IREDs that were pending the results of the OP cumulative assessment (listed in Attachment A) are indeed eligible for reregistration; and 1 Malathion is included in the OP cumulative assessment. However, the Agency has issued a RED for malathion, rather than an IRED, because the decision was signed on the same day as the completion of the OP cumulative assessment. -
Toxicological Effects of Chlorpyrifos and Methidathion in Young Chickens
African Journal of Biochemistry Research Vol.3 (3), pp.048-051 March, 2009 Available online at http://www.academicjournals.org/AJBR ISSN 1996-0778 © 2009 Academic Journals Full Length Research Paper Toxicological effects of chlorpyrifos and methidathion in young chickens Ojezele, Matthew Obaineh1* and Abatan, Oluwole Matthew2 1Department of pharmacology and therapeutics, Igbinedion University, Okada, Nigeria. 2Department of Veterinary Physiology, Biochemistry and Pharmacology, University of Ibadan, P. O. Box 20711 (U. I.), Ibadan, Oyo State, Nigeria. Accepted 25 January, 2009 The objective of this work is assessment of the toxicological effects of the organophosphorus compounds (methidathion and chlorpyrifos) and the usefulness of some parameters as bioindicators. Haematology and serum biochemistry were assayed in 15 cockrels at random age of 4 - 6 weeks. The birds were randomly assigned to 3 oral (by mouth) pulse-dose treatments of 0, 3.5 mg/kg chlorpyrifos, and 7.5 mg/kg methidathion, respectively. Haematology and serum biochemistry were used as indices of toxicosis. Significantly (P < 0.05) reduced WBC, Neutrophils and Lymphocyte counts were observed in the groups of birds dosed with chlorpyrifos and methidathion. PCV, Hb, and RBC were significantly decreased by methidathion while chlorpyrifos caused a significant increase in these parameters. Results obtained in this study also showed that methidathion and chlorpyrifos caused significant decrease in the levels of ALP, ALT, TP, and ALB. While methidathion caused a significant decrease in the level of AST reverse is the case for chlorpyrifos with respect to AST. It was also observed that both organophosphates had no significant effect on the level of BIL. The study thus showed that the evaluated parameters can serve as useful bioindicators of the sub lethal exposure to organo- phosphorus compounds. -
Acutely / Extremely Hazardous Waste List
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 Extemely Hazardous 1,1,1-Trichloro-2, -bis(p-methoxyphenyl)ethane Extemely Hazardous 1,1a,2,2,3,3a,4,5,5,5a,5b,6-Dodecachlorooctahydro-1,3,4-metheno-1H-cyclobuta (cd) pentalene, Dechlorane Extemely Hazardous 1,1a,3,3a,4,5,5,5a,5b,6-Decachloro--octahydro-1,2,4-metheno-2H-cyclobuta (cd) pentalen-2- one, chlorecone Extemely Hazardous 1,1-Dimethylhydrazine 57-14-7 Extemely 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 Extemely Hazardous 1,2,3-Propanetriol, trinitrate P081 55-63-0 Acutely Hazardous 1,2,3-Propanetriol, trinitrate 55-63-0 Extemely Hazardous 1,2,4,5,6,7,8,8-Octachloro-4,7-methano-3a,4,7,7a-tetra- hydro- indane Extemely Hazardous 1,2-Benzenediol, 4-[1-hydroxy-2-(methylamino)ethyl]- 51-43-4 Extemely Hazardous 1,2-Benzenediol, 4-[1-hydroxy-2-(methylamino)ethyl]-, P042 51-43-4 Acutely Hazardous 1,2-Dibromo-3-chloropropane 96-12-8 Extemely Hazardous 1,2-Propylenimine P067 75-55-8 Acutely Hazardous 1,2-Propylenimine 75-55-8 Extemely Hazardous 1,3,4,5,6,7,8,8-Octachloro-1,3,3a,4,7,7a-hexahydro-4,7-methanoisobenzofuran Extemely Hazardous 1,3-Dithiolane-2-carboxaldehyde, 2,4-dimethyl-, O- [(methylamino)-carbonyl]oxime 26419-73-8 Extemely Hazardous 1,3-Dithiolane-2-carboxaldehyde, 2,4-dimethyl-, O- [(methylamino)-carbonyl]oxime.