Three new complexes, namely, [M(Pim)(L)] (M = Co (1), Cd (2), Pim = Pimelic acid, L = 1,4-bis(1-imidazolyl)-benzene), [Zn(Pim)(L)]·H2O (3), have been synthesized hydrothermally from the self-assembly of the transtion metal ions (M2 +) with flexible aliphatic dicarboxylate ligand (Pim) and the r...

This paper deals with the polarized IR spectra of the hydrogen bond in pimelic acid crystals and their quantitative interpretation. The spectra were measured for the νOH and νOD band frequency regions, at temperatures of 298 and 77 K, for the ‘alpha’ crystalline form of pimelic acid. Two...

The pimelic acid (PA) was used as a new surface modifier for wollastonite. The effects of PA treatment on the crystallization, morphology and mechanical properties of polypropylene/wollastonite composites were investigated. The Fourier transform infrared spectroscopy analysis revealed that the P...

The present study is on the reactive extraction of pimelic acid (heptanedioic acid) from dilute aqueous solutions by trioctylamine (TOA) in decan-1-ol. The equilibrium studies were performed at 298 K and the results were used to calculate the values of distribution coefficient (KD), loading fact...

The solvents ethylene glycol monoethyl ether acetate (EGEEA) and ethylene glycol monoethyl ether (EGEE), at sufficiently high doses, are known to be rodent developmental toxicants, exerting their toxic effects through the action of their metabolite 2-ethoxyacetic acid (2-EAA). Thus risks associa...

Male painters are commonly exposed to ethylene glycol monoethyl ether (EGE), a well known reproductive toxic agent causing testicular atrophy, in the form of solvent mixture containing toluene (TOL) and xylene (XYL). This study was carried out to determine the effect of exposing male rats to sol...

Male rats were given a single oral dose of ethylene glycol monoethyl ether (EGEE), the dose ranging from plausible human exposures (0.5–1 mg/kg) to doses reported in the literature (100 mg/kg). Urinary excretion of ethoxyacetic acid (EAA) and its glycine conjugate was followed up to 60 h after ...

The glycol ethers are an important and widely used class of solvents. Recent studies have demonstrated that ethylene glycol monomethyl ether (EGME), ethylene glycol dimethyl ether (EGdiME), ethylene glycol monoethyl ether (EGEE), and ethylene glycol monoethyl ether acetate (EGEEA) are teratogeni...

Seven-day static renewal tests with Ceriodaphnia dubia were used to document the chronic toxicity of ethylene glycol ethers and acetates to this invertebrate. The 7-d EC10 (effective concentrations inducing an inhibition of 10% of the reproduction of the tested organisms) values ranged from 0.06...

The influence of different glycol additives on the phase behaviour and micellar characteristics of a moderately hydrophobic ethylene oxide-propylene oxide(EO-PO) star block copolymer Tetronic®1304 (hereafter written as T1304) has been investigated by cloud point (CP), viscosity, high sensitivity...

Glycol ethers are a class of semi-volatile substances used as solvents in a variety of consumer products like cleaning agents, paints, cosmetics as well as chemical intermediates.We determined 11 metabolites of ethylene and propylene glycol ethers in 44 urine samples of German residents (backgro...

Ether derivatives of dihydroxy alcohols, which are formed from ethylene or propylene, are named glycol ethers. These compounds are used as solvents, emulsifiers, cleaning agents, and lacquers (in domestic and industrial products) in many chemical products and manufacturing operations. Glycol eth...

The synthesis of ethylene glycol monoethyl ether acetate by esterification of ethylene glycol monoethyl ether with acetic acid is of industrial interest. The following experimental determinations were carried out: vapour—liquid equilibria of the binary systems acetic acid—ethylene glycol monoe...

As a continuation of the systematic study on thermodynamic properties for the aqueous solution of alkoxyethanols, this paper reports new measurements of densities and viscosities for the aqueous solution of ethylene glycol monoethyl ether (CH3CH2OCH2CH2OH) covering the whole composition range at...

Atomic force microscopy (AFM) was used to investigate the physical properties of calcite surfaces after exposure to short chain alkanes and organic acids and to compare micrometer scale behaviour with macroscopic surface wetting previously observed using contact angle measurement. AFM imaging sh...

This study deals with the anchoring of heptanoic acid (HC7) as a corrosion inhibitor to palygorskite clay mineral originated from High Atlas of Marrakech (Morocco) beforehand grafted with 3-aminopropyltriethoxysilane (APTES) entities. Physicochemical characterizations (XRD, FTIR, TG-MS, zeta pot...

A series of catalysts containing 20 wt.% of Mn, Ce and Zr oxides deposited on Al2O3, SiO2 and TiO2 has been studied in ketonisation of heptanoic acid. The most pronounced effect of alumina support on catalysts activity has been noted. Manganese oxide catalysts have shown the highest activity. Th...

In this work, the effect of temperature on density (ρ), sound velocity (u), refractive index (n) and their derived properties for carboxylic acid mixtures was studied. The thermophysical properties: density, sound velocity and refractive index were measured over the entire composition range at ...

Solid–liquid equilibria (SLE) measurements have been undertaken for carboxylic acid systems comprising (butyric acid + propionic or pentanoic acid) and (heptanoic acid + propionic or butyric or pentanoic or hexanoic acid) via a synthetic method using two complementary pieces of equipment. The m...

The solubilities of trans-1,3,3,3-tetrafluoropropene (R1234ze(E)) in pentaerythritol ester heptanoic acid (PEC7) and in pentaerythritol tetranonanoate (PEC9) have been measured based on the isochoric method at temperatures ranging from 283.15 to 353.15 K. The experimental solubility data were co...