-Phenylenediamine
Green and High Efficient Synthesis of 2 Aryl Benzimidazoles: Reaction of Arylidene Malononitrile and 1,2 Phenylenediamine Derivatives in Water or Solvent Free Conditions
... A fast, high efficiency and environmentally friendly procedure for the synthesis of 2-aryl benzimi- dazole derivatives has been reported. Reaction between 1,2-phenylenediamine derivatives and arylidene ...
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Improvement of amperometric transducer selectivity using nanosized phenylenediamine films
... taken as 100%. The membranes, deposited by both methods, impeded interferents quite effectively—only a weak sensitivity to cysteine was observed. On the other hand, the transducer sensitivity to hydrogen peroxide after ...
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Chemical modification and characterization of clinoptilolite by 1,3-Phenylenediamine as a sorbent for the removal of NO2
... Fig. 3 presents the results of DTA-TGA analysis for raw and modified clinoptilolite. As can be seen in Fig. 3A, zeolite has experienceda %1 weight loss up to 90ºC, which can be attributed to the initial loss of surface ...
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In Situ UV–Vis Spectroelectrochemical Studies on the Copolymerization of Diphenylamine and o Phenylenediamine
... The in situ ultraviolet-visible (UV-Vis) spectroelectrochemical study on the copolymerization of diphenyl- amine (DPA) and o-phenylenediamine (OPD) has been performed at a constant potential of 0.8 V using in- ...
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Urea Amperometric Biosensors Based on Nanostructured Polypyrrole and Poly Ortho Phenylenediamine
... The urea concentration in serum or urine is an indicator of kidney diseases, as well as diabetes, and analysis in clinical laboratories is frequently used. In a urea biosen- sor the enzyme urease, which catalyses the ...
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Molecularly Imprinted Sensor based on o-phenylenediamine for Electrochemical Detection of Sulfamethoxazole
... cavities, which could selectively recognize template molecule. The molecularly imprinted electrochemical sensors have received great attention due to their high selectivity, sensitivity, chemical stability, ...
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Phenylenediamine as Inhibitor in Sour Water at Oil Refinery
... of phenylenediamine were used to inhibit carbon steel include 1x10 -5 , 1x10 -4 , 1x10 -3 and 1x10 -2 mol/l, protection efficiency calculations indicate that 1x10 -3 M of phenylenediamine gave efficiency ...
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Study of Complex Formation Constants for Some Cations With O Phenylenediamine in Binary Systems Using Square Wave Polarography Technique
... The results obtained show that there is an inverse relationship between the formation constant of the com- plexes and the donor number of the solvents based on the Gatmann donocity scale. Also, the stability con- stants ...
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Virtual Screening of Phenylenediamine Schiff`s Base Derivatives as Possible DNA Intercalating Agents
... I phenylenediamine Schiff’s base derivatives, we predict an increased DNA intercalating efficacy for all series I ...corresponding phenylenediamine isomer, which may be attributed to the introduction of ...
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HPLC Determination of α-keto Acids in Human Serum and Urine after Derivatization with 4-Nitro-1,2-phenylenediamine
... The determination of α-keto acids has clinical importance, because these are intermediates in a number of biochemical processes. This work reports the development of an HPLC procedure for the analysis α-keto acids in ...
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Synthesis and Phase Transition Study of New Mesogence Derived from 1, 4-Phenylenediamine
... This work include synthesized and characterization the compound [I] by reaction 1,4-phenylenediamine with chloro acetic acid then this compound reaction with methanol in [r] ...
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Para-phenylenediamine allergy: current perspectives on diagnosis and management
... Abstract: Para-phenylenediamine (PPD) is the commonest and most well-known component of hair dyes. Oxidative hair dyes and dark henna temporary tattoos contain PPD. Individuals may be sensitized to PPD by ...
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Study of Para-Phenylenediamine (PPD) in the Clothes Textile Materials
... Para-phenylenediamine (PPD) is a chemical compound most common cause of Contact Allergy Dermatitis in dermatology practice mostly known from hair dye. In addition to the hair dye, PPD is also found in hair or ...
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Dielectric Constant of Poly (ortho -Phenylenediamine) Modified on Pt disk Microelectrode in Presence of Hydrogen Peroxide and Ascorbic Acid
... Abstract— The modified Pt microelectrode with Poly(ortho-Phenylenediamine), PoPD layer was successfully electropolymerized and characterized by Cyclic Voltammetry and Electrochemical Impedance Spectroscopy (EIS). ...
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THERMODYNAMICS OF BINARY ALLOYS OF PHARMACEUTICAL ACTIVE IMIDAZOLE WITH O- PHENYLENEDIAMINE
... The present study describes the investigation of eutectic and non-eutectic alloys of imidazole (IM) with o - Phenylenediamine (OPD). the solid-liquid equilibrium (SLE) data determined by thaw melt method in the ...
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Different Analytical Methods of Para Phenylenediamine Based Hair Dye
... Many cases of toxicity and mortality either due to accidental or deliberate ingestion of hair dyes were reported in Egypt, Sudan, Israel, Morocco, Saudi Arabia, India and Tunisia. In the field of forensic analytical ...
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Synthesis and characterization of oxidovanadium complexes as enzyme inhibitors targeting dipeptidyl peptidase IV
... Two oxidovanadium IV Schiff base complexes with N,N′-1,2-phenylenediamine -bissalicyladimine ligands carrying different substituents were synthesised and evaluated as inhibitors of dipepti[r] ...
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Crystal structure of dichlorido(1,2 phenylenediamine κ2N,N′)platinum(II)
... rotation axis and has a slightly distorted square-planar coordination environ- ment defined by two N atoms of an 1,2-phenylenediamine ligand and two Cl ions. In the crystal, the planar complex molecules are ...
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Synthesis of Some New 1,2,5- Substituted Benzimidazole Derivatives and Their Pharmacological Activity
... ortho phenylenediamine 1 with various organic acids yielded 2-substituted benzimidazole derivatives 2 which were further treated with nitric acid and sulphuric acid to afford 5-nitro-2-substituted benzimdazoles ...
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Chiral Polyamides Having L Glutamyl Residue as a Component
... 2-propanol (HFIP) and sodium azide (fungicide) were obtained from commercial sources and used as received. 1,3-Phenylenediamine (1,3-PDA) was purified by crys- tallization from diethyl ether [20] and ...
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