The dissolution of chalcopyrite in acidic potassium dichromate solution has been investigated with respect to the effects of sulphuric acid and potassium dichromate concentrations, by changing stirring speed, leaching temperature and particle size. It was determined that dissolution rate increas...
Molybdenite flotation concentrate was leached with sodium dichromate–sulfuric acid solutions in order to remove the copper sulfide impurities. The experimental results indicated that the temperature has a large influence on the copper dissolution. The concentration of dichromate has also a pron...
In this study, extraction characteristics of Cu, Co, Zn and Fe from copper converter slag by oxidative leaching with potassium dichromate–sulphuric acid lixiviant were investigated. The experimental results indicated that the presence of dichromate has a large influence on the extraction of met...
Dichromate [Cr(VI)] induces phytotoxicity either directly by interfering in a plant’s physiological, biochemical, and/or molecular process or indirectly by stimulating reactive oxygen species accumulation (ROS). The underlying mechanism in Cr(VI)-induced ROS mediated phytotoxicity is elusive. I...
The International Standard Organization (ISO) specifies two titrimetric methods for the determination of total iron content in iron ores using potassium dichromate as titrant after reduction of the iron(III) by tin(II) chloride and/or titanium(III) chloride. These two ISO methods (ISO2597-1 and ...
Herein, the design and synthesis of triazine based fluorophore for selective dual sensing of copper(II) and dichromate ions in non-aqueous solution has been reported. The triazine based fluorophore (TZAS) was synthesized in very good yield from inexpensive starting materials. The fluorophore has...
Corrosion resistance behaviour of copper was evaluated in 2M H2SO4 using ammonium dichromate as inhibitor. The experiments were carried out at ambient temperature of 25°C employing potentiodynamic polarization measurement. The concentration of the inhibitor was varied during the electrochemical...
The polymerization of three analogous monomers—2,2′-thiobisethanol dimethacrylate, 2,2′-oxybisethanol dimethacrylate and 1,5-pentanediol dimethacrylate—has been studied in the temperature range 30–95°C by isothermal d.s.c. The temperature and heteroatom effects on the polymerization course...
Synergistic extraction and recovery of Cerium(IV) (Ce(IV)) and Fluorin (F) from sulfuric solutions using mixture of Cyanex 923 and di-2-ethylhexyl phosphoric acid (D2EHPA) in n-heptane have been carried out. In order to investigate the synergistic extraction of Cyanex 923 + D2EHPA, extraction Ce...
Root exudates are the main media of information communication and energy transfer between plant roots and the soil. Understanding the response of root exudates to contamination stress is crucial in revealing the rhizoremediation mechanisms. Here, we investigate the response of alfalfa root exuda...
Epoxy-based composites are structurally versatile materials which may fulfill the requirements of many applications, but they suffer from insufficient fire resistance and thus the addition of flame retardants (FRs) is often necessary. This chapter gives an overview of recent advancements in the ...
Tris(1,3-dichloro-2-propyl)phosphate (TDCIPP) and tris(2-chloro-2-ethyl)phosphate (TCEP) are organophosphorous flame retardants with widespread usage and human exposures through food, inhalation, and dust ingestion. They have been detected in human tissues including urine and breast milk. Report...
Fyrol FR-2, a flame retardant, was readily absorbed from the skin and gastrointestinal tract and rapidly distributed throughout the body, with the highest concentration being observed in kidney, liver, and lung. The route of administration had little effect on Fyrol FR-2 distribution. Its absorp...
Glycosylation of small lipophilic molecules is a ubiquitous process in plants that produces many important compounds. Many of these are secondary metabolites with key roles in plant abiotic and biotic stress tolerance through such processes as free radical scavenging and antimicrobial and antihe...
This report describes the synthesis of enantiomerically pure (2R,3R)-, (2R,3S)-, (2S,3S)- and (2S,3R)-2-amino-3-hydroxy-2-methyl-3-phenylpropanoic acids, four quaternary α-amino acids, using a stereodivergent synthetic route and starting from (S)- and (R)-N-Boc-N,O-isopropylidene-α-methylserin...
A variety of substituted 1-aryl-2-propenylamines of high enantiomeric purity were prepared via lipase-catalysed resolution of the corresponding racemates. (R)-1-Phenyl-2-propenylamine was further synthesised into (2R,3S)-3-benzoylamino-2-hydroxy-3-phenylpropanoic acid methyl ester, the side chai...
In vitro root cultures of Anigozanthos preissii and Wachendorfia thyrsiflora (Haemodoraceae) are suitable biological systems for studying the biosynthesis of phenylphenalenones. Here we report how we used these root cultures to investigate precursor–product relationships between phenylpropanoid...
Three new glucosides of phenylpropanoic acid derivatives (micromelumosides A–C) and a new coumarin glucoside (micromelumoside D) were isolated from the aerial portions of Micromelum minutum in addition to 15 known compounds, 3,4-dihydro-1,2-secomicrominutinin 9-O-β-d-glucopyranside, umbellife...
Both diastereoisomers of 2-amino-3-hydroxybutanoic acid and 2-amino-3-hydroxy-3-phenylpropanoic acid have been prepared from enantiopure α-hydroxy-β-amino esters via the intermediacy of the corresponding cis- and trans-aziridines. Aminohydroxylation of two α,β-unsaturated esters produced ena...
The main products in the ozonolysis of unsaturated triglycerides or vegetable oils are peroxides, aldehydes, Criegee ozonides and carboxylic acids. Some of these compounds are present in different concentrations in the biological fluids. The aim of this work is to study, using gas chromatography...
About|Contact|Cas|Product Name|Molecular|Country|Encyclopedia
Message|New Cas|MSDS|Service|Advertisement|CAS DataBase|Article Data|Manufacturers | Chemical Catalog
©2008 LookChem.com,License: ICP
NO.:Zhejiang16009103
complaints:service@lookchem.com Desktop View