2-Methoxy-1-propanol has been selectively synthesized using clay supported tris(2,4-pentanedionato)zirconium(IV), prepared by facile ion-exchange process. The tris(2,4-pentanedionato)zirconium(IV) cation was synthesized by refluxing zirconium chloride with acetylacetone in chloroform. The hetero...

The German MAK value of 1-methoxypropanol-2 has been fixed at 100 ppm. The aim of this study was to evaluate possible acute effects of an exposure to 100 ppm 1-methoxypropanol-2 on the upper airways of human subjects. Twenty subjects were exposed in a crossover design to 100 ppm 1-methoxypropano...

The conformational stability of 1,3-dichloro-2-propanol and 1,1,1-trichloro-2-methyl-2-propanol (chlorobutanol) was investigated by the DFT-B3LYP/6-311+G**, MP2/6-311+G** and MP4(SDQ)/6-311+G** levels of theory. From the calculations chlorobutanol was predicted to exist in a non-planar gauche st...

In this study, the self-standing membranes of polyaniline (PANI) containing N,N′-Dimethyl propylene urea – were prepared by solution cast method followed by protonation with concentrated hydrochloric acid. The secondary amine i.e. heptamethyleneimine was used as a gel inhibitor, and to stabili...

Much attention has been paid for the synthesis of dimethyl carbonate (DMC) by urea indirect alcoholysis method, which had not been actually industrialized by now. The rigorous full process model was then necessary to optimize the process with heat integration. In this paper, a full process was d...

Paramagnetic manganese (II) can be employed as a calcium surrogate to sensitize magnetic resonance microscopy (MRM) to the processing of calcium during bone formation. At high doses, osteoblasts can take up sufficient quantities of manganese, resulting in marked changes in water proton T1, T2 an...

It has been shown that in the rat Enheptin has a transient effect on the estrous cycle of the female and the breeding capacity of the male. In addition, this compound causes a decrease in seminal vesicle and prostrate weights but not in the weight of the testes. The results indicate that Enhepti...

The behaviour of the [36Cl]-chlorine labelled compounds, anhydrous hydrogen chloride and 1,1-dichlorotetrafluoroethane, towards fluorinated chromia catalysts has been investigated under flow conditions at 623 and 688 K respectively. In each case [36Cl]-chlorine activity was deposited on the cata...

Gaseous fluorination with hydrogen fluoride at atmospheric pressure of the two isomers CClF2CClF2 and CCl2FCF3 was carried out continuously on a chromic oxide based catalyst. The fluorinated derivative, obtained in a yield greater than 90%, was chloropentafluoroethane. Hexafluoroethane and a...

An apparatus described previously has been used for the present measurements. It is based on a synthetic static method with a variable-volume cell. Results are given at different temperatures between 343 and 423 K for three binary mixtures: propane-dichlorotetrafluoroethane (C3H8-R114), propane-...

The hydrodechlorination of dichlorodifluoromethane (CFC-12) was performed on small surface area model catalysts, including Pd(111) and Pd (110)single crystals and polycrystalline palladium foil. Reactions were performed in a batch reactor, at atmospheric pressure and in the temperature rangeof 4...

An intravenous dosage form of dichlorotetrafluoroethane, a common fluorocarbon aerosol propellant, was formulated in polyethylene glycol 400 for single dosing to unanesthetized dogs. A three‐compartment open model was proposed for the disposition of this compound in dogs, with average half‐liv...

Palladium supported on γ-alumina displays high activity for the hydrodechlorination of 1,1-dichlorotetrafluoroethane. High H2partial pressures are needed to avoid deactivation, and steady state is obtained after ∼5 h time on stream. Under these conditions (H2/CFC feed ratio=20) the reaction is...

1.1.1.2 - Tetrafluoroethane was prepared from isomeric mixtures of dichlorotetrafluoroethanes through selective hydrogenolysis of CF3CCl2F catalyzed by Pd/C. The other isomer CClF2CClF2 appeared more stable to hydrogenolysis and was only converted partially to the monohydrogenated derivative...

The synthesis of [36CI]-chlorine labelled 1,1-dichlorotetrafluoroethane by the photolysis of 1 -chloro-1,2,2,2,-tetrafluoroethane with [36CI]-dichlorine is described.

The energy of combustion at 298.15 K of liquid 1,2-dichlorotetrafluoroethane has been determined by rotating-bomb calorimetry. The standard enthalpy of formation derived from these measurements. ΔfH0(CF2ClCF2Cl(g), 298.15 K) = −(937.0±7.3) kJ mol−1, is in satisfactory agreement with the value ...

Concentration and spatial distribution of six phthalic acid esters (PAEs) and eight phenols in sediments of urban rivers, namely the Xi River (XR) and Pu River (PR) in Shenyang city, Northeast China were investigated and the ecological risk of these target pollutants was assessed based on the ri...

Granular activated carbon (GAC) supported ZnO catalyst (ZnO-GAC) was prepared to activate persulfate (PS) for the decolorization of Acid Orange 7 (AO7) in the presence of ultrasonic irradiation (US). The effects of initial pH, PS concentration, catalyst dosage, initial dye concentration, and rea...

In this study, the ultra-thin CoAl layered double hydroxide (LDH) nanosheets with Cl− intercalation were prepared by a hydrothermal method following acid-salt treatment. The morphology, structure and composition information of CoAl LDHs were identified by a variety of characterization methods in...

Cutaneous disease can present with lesions of all colors of the visible spectrum. Lesions of the skin, nail, and mucous membranes with an orange color can be due to a variety of etiologies. The conditions may appear as purely orange, yellow-orange, red-orange, tan, or brown with an orange hue. T...