Synthesis of novel non-toxic naphthenic and benzoic acid ionic liquids. Structure-properties relationship and evaluation of their biodegradability potential
alternatives to common organic solvents but in order to efficiently be characterized as green their environmental impact has to be assessed. In the present study, the design, synthesis and an initial potential hazard assessment of 11 naphthenic and benzoic acid based PILs is presented. PILs’ “greenness” is enhanced considering that they are non-toxic according to the aquatic toxicity evaluation and most
Analysis of Drug Contamination from Parabens in Theophylline Olamine
作者:E.C. Juenge、D.F. Gurka、M.A. Kreienbaum
DOI:10.1002/jps.2600700603
日期:1981.6
sample of theophyllineolamine were found to be derived fromparabens and ethanolamine. These contaminants, whose presence was characterized by the loss of preservatives and solubilizing agent, were isolated directly from the drug sample and identified. A high-performance liquid chromatographic (HPLC) system was developed to separate completely and to measure quantitatively theophylline, the two impurities
Supramolecular Assembly and Ab Initio Quantum Chemical Calculations of 2-Hydroxyethylammonium Salts of <i>para</i>-Substituted Benzoic Acids
作者:Manuela Crisan、Paulina Bourosh、Yurii Chumakov、Mihaela Petric、Gheorghe Ilia
DOI:10.1021/cg301304y
日期:2013.1.2
O–H···O hydrogenbonds. The substituents on anions influence dipole–dipole interactions between anions and cations in molecular aggregates. As a result, they are organized in building blocks either via one charge-assisted (1, 2) hydrogen bond or via two (3–7) hydrogenbonds. The dispersion interaction significantly contributes to intermolecular force fields driving the organization of hydrogenbonds in
Cleaning liquid for producing semiconductor device and process for producing semiconductor device using same
申请人:MITSUBISHI GAS CHEMICAL COMPANY, INC.
公开号:EP0827188A2
公开(公告)日:1998-03-04
There is disclosed a cleaning liquid for producing a semiconductor device which comprises (A) fluorine-containing compound; (B) water-soluble or water-miscible organic solvent; and (C) inorganic acid and/or organic acid, optionally, further comprises (D) quaternary ammonium salt or (D') a specific organic carboxylic acid ammonium salt and/or an organic carboxylic acid amine salt; as well as a process for producing a semiconductor device by forming a resist pattern on a substrate equipped on the surface with an insulating film layer or a metallic electroconductive layer, forming a via hole or electric wiring by dry etching, removing the resist pattern by ashing treatment with oxygen plasma; and effecting an cleaning treatment with the above cleaning liquid. The above cleaning liquid and production process can readily remove the deposit polymer formed in the case of dry etching without impairing metallic film and insulating film.
Biodegradable resin products consisting essentially of a polymeric resin of polyethylene, starch, polyesters such as polylactic acid, or other suitable polyesters. In admixture with the resin is a particulate vapor phase corrosion inhibitor selected from amine salts, ammonium benzoate, triazole derivatives, tall oil imidazolines, alkali metal molybdates, alkali dibasic acid salts, and mixtures thereof, and is present in an amount ranging from between about 1% and 3% by weight of the polymeric resin.