Academic literature on the topic 'Methylphosphonic Acid'

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Journal articles on the topic "Methylphosphonic Acid"

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Afonin, E. G. "Iminodi(methylphosphonic) Acid." Russian Journal of General Chemistry 73, no. 10 (2003): 1503–5. http://dx.doi.org/10.1023/b:rugc.0000016010.34401.4f.

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Vokuev, M. F., A. V. Braun, T. M. Baygildiev, I. V. Rybalchenko, and I. A. Rodin. "Determination of methylphosphonic acid and alkyl methylphosphonic acid esters in soils by liquid chromatography-high-resolution mass spectrometry (LC-HRMS)." Industrial laboratory. Diagnostics of materials 88, no. 1(I) (2022): 25–33. http://dx.doi.org/10.26896/1028-6861-2022-88-1-i-25-33.

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We have optimized the method for simultaneous extraction of ethyl methylphosphonic acid ester (EMPA), isopropyl methylphosphonic acid ester (IPMPA), isobutyl methylphosphonic acid ester (IBMPA), pinacolyl methylphosphonic acid ester (PMPA), and methylphosphonic acid (MPA) from soil with their further determination by high performance liquid chromatography — high-resolution tandem mass spectrometry (HPLC — HRMS/MS). The analytes are highly-polar products of nerve agent hydrolysis. The observed ions in the fragmentation mass spectra of deprotonated molecules of EMPA, IPMPA, IBMPA, PMPA, MPA, and
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Sega, Gary A., Bruce A. Tomkins, and Wayne H. Griest. "Analysis of methylphosphonic acid, ethyl methylphosphonic acid and isopropyl methylphosphonic acid at low microgram per liter levels in groundwater." Journal of Chromatography A 790, no. 1-2 (1997): 143–52. http://dx.doi.org/10.1016/s0021-9673(97)00747-4.

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Reuter, Hans, and Martin Reichelt. "Methylphosphonic acid, CH3PO(OH)2." Acta Crystallographica Section E Structure Reports Online 70, no. 3 (2014): o353. http://dx.doi.org/10.1107/s1600536814003572.

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The asymmetric unit of the title compound, CH5O3P, contains two independent molecules with nearly identical bond lengths and angles. In the crystal, each of the molecules acts as acceptor (P=O) and donor (P—OH) of four hydrogen bonds to three adjacent molecules, resulting in the formation of two different bilayers (one for each molecule) stacked perpendicular to theaaxis in the crystal.
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Watson, Rebecca E., Ahmed M. Hafez, Jonathan N. Kremsky, and George O. Bizzigotti. "Toxicity of Binary Chemical Munition Destruction Products: Methylphosphonic Acid, Methylphosphinic Acid, 2-Diisopropylaminoethanol, DF Neutralent, and QL Neutralent." International Journal of Toxicology 26, no. 6 (2007): 503–12. http://dx.doi.org/10.1080/10915810701707551.

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This paper reports the toxicity and environmental impact of neutralents produced from the hydrolysis of binary chemical agent precursor chemicals DF (methylphosphonic difluoride) and QL (2-[bis(1-methylethyl)amino]ethyl ethyl methylphosphonite). Following a literature review of the neutralent mixtures and constituents, basic toxicity tests were conducted to fill data gaps, including acute oral and dermal median lethal dose assays, the Ames mutagenicity test, and ecotoxicity tests. For methylphosphonic acid (MPA), a major constituent of DF neutralent, the acute oral LD50 in the Sprague-Dawley r
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Vitha, Tomáš, Jan Kotek, Jakub Rudovský, et al. "Selective Protection of 1,4,8,11-Tetraazacyclotetradecane (Cyclam) in Position 1,4 with the Phosphonothioyl Group and Synthesis of a Cyclam-1,4-bis(methylphosphonic Acid). Crystal Structures of Several Cyclic Phosphonothioamides." Collection of Czechoslovak Chemical Communications 71, no. 3 (2006): 337–67. http://dx.doi.org/10.1135/cccc20060337.

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A new cyclam-based ligand, 1,4,8,11-tetraazacyclotetradecane-1,4-bis(methylphosphonic acid) (1,4-H4te2p), was synthesized. Cyclam was protected by the reaction with PhP(S)Cl2 to form exclusively five-membered cyclic phenylphosphonothioic diamide 2 in a moderate yield. The solid-state structures of 2 and several by-products were determined. Compound 2 was isolated as two stable conformers differing in a mutual position of benzene ring and sulfur atom with respect to the cyclam ring. Compound 2 was used for the synthesis of 1,4-dibenzylcyclam. However, the deprotection of the thiophosphoryl-prot
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Lewkowski, Jarosław, Maria Rodriguez Moya, Anna Wrona-Piotrowicz, Janusz Zakrzewski, Renata Kontek, and Gabriela Gajek. "Synthesis, fluorescence properties and the promising cytotoxicity of pyrene–derived aminophosphonates." Beilstein Journal of Organic Chemistry 12 (June 16, 2016): 1229–35. http://dx.doi.org/10.3762/bjoc.12.117.

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A large series of variously substituted amino(pyren-1-yl)methylphosphonic acid derivatives was synthesized using a modified aza-Pudovik reaction in 20–97% yields. The fluorescence properties of the obtained compounds were investigated revealing that N-alkylamino(pyren-1-yl)methylphosphonic derivatives are stronger emissive compounds than the corresponding N-aryl derivatives. N-Benzylamino(pyren-1-yl)methylphosphonic acid displayed strong fluorescence (ΦF = 0.68) in phosphate-buffered saline (PBS). The influence of a series of derivatives on two colon cancer cell lines HT29 and HCT116 was also
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Ленинский, М. А., Е. И. Савельева, and И. А. Васильева. "Assessment of recovery levels of organophosphorus toxic substances conversion products from building materials by high-performance liquid chromatography with tandem mass-selective detection." Химическая безопасность / Chemical Safety Science 5, no. 1 (2021): 166–84. http://dx.doi.org/10.25514/chs.2021.1.19011.

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Сформирован перечень веществ (маркеров) для ретроспективного установления факта загрязнения в прошлом различных материалов фосфорорганическими отравляющими веществами. К «долгоживущим» маркерам загрязнения относятся: O-изобутил-S-(2-диэтиламиноэтил) метилфосфонотиоат (VR) и 11 продуктов конверсии фосфороганических отравляющих веществ: диизопропилметилфосфонат, изопропил-изобутил метилфосфонат, изобутил-пинаколил метилфосфонат, дипинаколил метилфосфонат, диизобутил метилфосфонат, изобутил метилфосфоновая кислота, бис(2-диэтил-аминоэтил) дисульфид, S-2-(диэтиламиноэтил) метилфосфонотиоат, О-изоп
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Mong, G. M., S. D. Harvey, and J. A. Campbell. "Synthesis of Alkyl Methylphosphonic Acid Esters." Phosphorus, Sulfur, and Silicon and the Related Elements 180, no. 8 (2005): 1885–91. http://dx.doi.org/10.1080/104265090889602.

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Bianchetta, Stephen, Lixiong Li, and Earnest F. Gloyna. "Supercritical Water Oxidation of Methylphosphonic Acid." Industrial & Engineering Chemistry Research 38, no. 8 (1999): 2902–10. http://dx.doi.org/10.1021/ie990094p.

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Dissertations / Theses on the topic "Methylphosphonic Acid"

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Anthony, Jolene. "Development of rapid and inexpensive derivatisation methods for methylphosphonic acid." Thesis, Anthony, Jolene (2019) Development of rapid and inexpensive derivatisation methods for methylphosphonic acid. Honours thesis, Murdoch University, 2019. https://researchrepository.murdoch.edu.au/id/eprint/53974/.

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This study probed alternative methods towards rapid and inexpensive in-field derivatisation of methylphosphonic acid (MPA), the final hydrolysis product of several chemical warfare nerve agents, for detection by gas chromatography-mass spectrometry (GC-MS). Initially, research focused on acetylation as a derivatisation method, with attempted preparation of a reference sample of diacetyl methylphosphonate. This was unsuccessful with reduction of the acetyl carbonyl group during synthesis and detection of diethyl methylphosphonate instead. The research subsequently focused on esterificat
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Sullivan, Patricia A. (Patricia Ann) 1978. "Oxidation kinetics of methylphosphonic acid in supercritical water : experimental measurements and model development." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/28305.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, February 2004.<br>Includes bibliographical references.<br>(cont.) at well-defined operating conditions and to develop. both microscopic and macroscopic models, ranging from regressed global models to an elementary reaction mechanism, to quantify MPA oxidation kinetics in supercritical water. MPA hydrolysis and oxidation rates were experimentally measured in a laboratory-scale plug flow reactor. The effects of MPA concentration (0.5 to 1.0 mM), oxygen concentration (1.0 to 3.8 mM), temperature (478 to 572⁰C)
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Ploeger, Jason M. "Co-oxidation in supercritical water : methylphosphonic acid-ethanol and ammonia-ethanol model systems." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/35518.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2006.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Includes bibliographical references.<br>Supercritical water (SCW) is an effective solvent for the destruction of organic compounds by oxidation. Because both organics and oxygen have high solubility in water above its critical point (To = 374 °C (647 K), Pc = 221 bar), they can be reacted together in a single phase which avoids mass transfer limitation
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Chen, Yingying, and Yingying Chen. "Removing Phosphonate Antiscalants from Membrane Concentrate Solutions using Ferric Hydroxide Adsorbents." Thesis, The University of Arizona, 2017. http://hdl.handle.net/10150/624128.

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Phosphonate antiscalants are commonly used in nanofiltration and reverse osmosis water treatment to prevent membrane fouling by mineral scale. In many circumstances it is desirable to remove these phosphonate compounds before concentrate disposal or further treatment. This research investigated the removal of phosphonate compounds from simulated membrane concentrate solutions using ferric hydroxide adsorbents. Two phosphonate antiscalants were investigated, Permatreat 191® (PT191) and nitrilotrimethylphosphonic acid (NTMP). Batch adsorption isotherms and column breakthrough and regeneration ex
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Piergies, Natalia. "Analysis of the molecular structures of boron analogues of amino acids, potential kinase inhibitors, by vibrational spectroscopy methods." Praca doktorska, 2014. https://ruj.uj.edu.pl/xmlui/handle/item/59397.

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Przedmiotem niniejszej rozprawy doktorskiej jest następująca grupa Nbenzylamino(boronofenylo)metylo pochodnych kwasów fosfonowych: N-benzyloamino-(3-boronofenylo)-S-metylofosfonowy, N-benzyloamino-(4-boronofenylo)-S-metylofosfonowy, N-benzyloamino-(2-boronofenylo)-R-metylofosfonowy, N-benzyloamino-(3-boronofenylo)-R-metylofosfonowy i N-benzyloamino-(4-boronofenylo)-R-metylofosfonowy. Związki te są potencjalnymi substancjami hamującymi aktywność enzymów z grupy kinaz. Deregulacja funkcji kinaz białkowych została rozpoznana w różnego rodzaju chorobach nowotworowych. Aktywność kinaz białkowych w
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Book chapters on the topic "Methylphosphonic Acid"

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Demaison, J. "580 C5H13O3P P-Methylphosphonic acid diethylester." In Asymmetric Top Molecules. Part 2. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-10400-8_328.

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Demaison, J. "376 C3H9O3P P-Methylphosphonic acid dimethyl ester." In Asymmetric Top Molecules. Part 2. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-10400-8_124.

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Vogt, J. "682 C7H17O3P Methylphosphonic acid bis(1-methylethyl) ester." In Asymmetric Top Molecules. Part 3. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-14145-4_104.

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Maslova, Olga, Elena Efremenko, Il'ya Lyagin, Ol'ga Sen'ko, and Aslanli Aslanli. "Immobilized enzymatic biocatalysts and their application for destruction of organophosphorus compounds in water, soil and air systems." In ORGANOPHOSPHORUS NEUROTOXINS. Publishing Center RIOR, 2020. http://dx.doi.org/10.29039/52_340-360.

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Undecomposed residues of organophosphorus compounds (OPC) after treatment with pesticides of plants or animals often fall into natural objects (water, soil and air). Modern approaches to the immobilization of enzymes allowing obtaining of stable biological products are described, as well as the possible using of immobilized enzymes for the decomposition of different OPC: paraoxone, methyl and ethyl paraoxone, coumaphos, parathion, methyl and ethyl parathion, chlorpyrifos, soman, VX, methylphosphonic acid and its isobutyl and diisobutyl ethers, diisopropyl fluorophosphate.
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Pardasani, R. T., and P. Pardasani. "Magnetic properties of nickel(II) complex with nitrilo-tris(methylphosphonic) acid and pyridine." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 3. Springer Berlin Heidelberg, 2021. http://dx.doi.org/10.1007/978-3-662-62470-8_62.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of nickel(II) complex with nitrilo-tris(methylphosphonic) acid and water." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 3. Springer Berlin Heidelberg, 2021. http://dx.doi.org/10.1007/978-3-662-62470-8_63.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of nickel(II) complex with nitrilo-tris(methylphosphonic) acid and dimethylsulfoxide." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 3. Springer Berlin Heidelberg, 2021. http://dx.doi.org/10.1007/978-3-662-62470-8_61.

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Su, Hailin, Yuankai Du, and Maowen Shi. "Synthesis, structures and properties of lanthanide complexes supported by 2-(pyridyl-N-Oxide) methylphosphonic acid." In Advances in Energy, Environment and Chemical Engineering Volume 2. CRC Press, 2022. http://dx.doi.org/10.1201/9781003363545-34.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of bimetallic oxide of Cu-Mo6 constructed from molybdenum oxo cluster having bis-N,N(methylphosphonic acid)amine." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 8. Springer Berlin Heidelberg, 2023. http://dx.doi.org/10.1007/978-3-662-66460-5_38.

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Rohrbaugh, Dennis K., and Emory W. Sarver. "GC/MS Screening of Alkyl Methylphosphonofluoridates and Alkyl Methylphosphonic Acids." In Analytical Chemistry Associated with the Destruction of Chemical Weapons. Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5600-4_27.

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Conference papers on the topic "Methylphosphonic Acid"

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Hou, Jian, and Tao Chen. "Understanding of the Differences on CaCO3 and CaSO4 Control by Diethylenetriamine Penta (Methylphosphonic Acid) before and after Thermal Aging." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-18789.

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Abstract The thermal degradation of scale inhibitors poses a challenge for scale control and flow assurance in high temperature reservoirs. Targeting this problem, this study investigated the mitigation of scale potential of the most commonly used phosphonate diethylenetriamine penta (methylphosphonic acid) (DETPMP) before and after thermal aging at high temperature. In this study, the DETPMP stock solution was oxygen removed and kept at 135°C for 7days. The performance of the aged and not aged DETPMP against CaCO3 and CaSO4 formation at high-temperature and high-hardness condition was investi
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Reports on the topic "Methylphosphonic Acid"

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Koester, Carolyn, Armando Alcaraz, Mark Dreyer, and Todd Corzett. Experiments regarding methylphosphonic acid in proficiency test Sample 445. Office of Scientific and Technical Information (OSTI), 2019. http://dx.doi.org/10.2172/1544971.

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