Iron stearate

In a recent study, LB films of iron stearate was deposited from aqueous solution into a substrate only on the down journey. On the up journey, the substrate was withdrawn through a clean area. The condition of the aqueous surface was the same as that for the preparation of the Y-type layer. The Fe55 tracer techniques was used for the examination of the direction of molecules. The unidirectional surface conductance of monolayers of stearic acid deposited on a glass support was investigated. 

Figure 4.4 shows the retardation of oxidation by a copper salt during the oxidation of tetralin, a model hydrocarbon, in the presence of 0.5% iron stearate [22]. 

Fig. 4.4 Influence of copper stearate on the oxidation rate of the iron stearate (0.5%)-catalysed oxidation of tetralin [22]...

Fig. 8.4 A schematic illustration of a monomolecular iron stearate boundary film. Cohesive forces between the iron stearate molecules result in a closely packed and difficult to penetrate film (Courtesy of Texaco Inc.)...

With use of Fe (II)-stearate as the precursor, the magnetite nanocrystals of about 3 nm in size can be prepared by using alkylamine as the activation reagents [337]. In a typical synthesis, 0.622 g of iron stearate and 0.269 g of octadecylamine were mixed with 5 mL of octadecene and heated to 300 °C under an argon atmosphere. The... 

Any suitable metallic stearate can be used to impart the improved characteristics, without detracting from the electrical properties of the xerographic plate. Especially preferred are zinc stearate, calcium stearate, magnesium stearate, cadmium stearate, barium stearate, lithium stearate, lead stearate, iron stearate, sodium stearate, aluminum stearate, nickel stearate, cobalt stearate, and copper stearate. ... 

Metals. Transition-metal ions, such as iron, copper, manganese, and cobalt, when present even in small amounts, cataly2e mbber oxidative reactions by affecting the breakdown of peroxides in such a way as to accelerate further attack by oxygen (36). Natural mbber vulcani2ates are especially affected. Therefore, these metals and their salts, such as oleates and stearates, soluble in mbber should be avoided. 

Many other heterogeneous electrodes have been developed based on, e.g., calcium oxalate or stearate in paraffin, barium sulphate in paraffin or silicone-rubber, bismuth phosphate or iron(III) phosphate in silicone-rubber, caesium dodecamolybdophosphate in silicone-rubber and amminenickel nitrate in phenol-formaldehyde resin39 these permit the determination, respectively, of Ca and oxalate, Ba and sulphate, Bi or Fe(HI) and phosphate, Cs, Ni and nitrate, etc. 

The reaction of ions with peroxyl radicals appears also in the composition of the oxidation products, especially at the early stages of oxidation. For example, the only primary oxidation product of cyclohexane autoxidation is hydroperoxide the other products, in particular, alcohol and ketone, appear later as the decomposition products of hydroperoxide. In the presence of stearates of metals such as cobalt, iron, and manganese, all three products (ROOH, ROH, and ketone) appear immediately with the beginning of oxidation, and in the initial period (when ROOH decomposition is insignificant) they are formed in parallel with a constant rate [5,6]. The ratio of the rates of their formation is determined by the catalyst. The reason for this behavior is evidently related to the fast reaction of R02 with the... 

Lead(II) azide Lead chromate Lead dioxide Calcium stearate, copper, zinc, brass, carbon disulfide Iron hexacyanoferrate(4-) Aluminum carbide, hydrogen peroxide, hydrogen sulfide, hydroxylamine, ni-troalkanes, nitrogen compounds, nonmetal halides, peroxoformic acid, phosphorus, phosphorus trichloride, potassium, sulfur, sulfur dioxide, sulfides,... 

Schwendener, R. A., Wuethrich, R., Duewell, S., Westera, G., and Von-Schulthess, G. K. Small unilamellar liposomes as magnetic resonance contrast agents loaded with paramagnetic manganese-, gadolinium-, and iron-DTPA-stearate complexes. Int. J. Pharm. 1989, 49, 249-259. 

LB films prepared from iron (III) stearate, transferred Absorption and infrared spectra, to glass substrates, dried, exposed to hydrochloric acid X-ray diffraction, and conductivity in a desiccator, and subsequently exposed to pyrrole measurements vapor at 0.3-0.4 Torr... 

Fe203 and Fe304 in presence of a chloride source act as flame retardants for nitrile-containing plastics and rubbers such as acrylonitrile-butadiene-styrene copolymers.52 The activity appears to be connected with the formation of FeCl3 on combustion, but other properties of FeCl3 itself make it unsuitable for direct use. If an alkyl chloride is present iron(II) citrate may be used, and for halogen-containing nitrile polymers acetates, stearates, sulfates and carbonates are effective. 

V.V. Zhukov, On the Explosive Concentration Limit of Iron, Sulfur and Zinc Stearate Powders and Their Mixtures , UsbPreduprezhdenie-VnezapnVozplomeneneniiPoroshkov i Vzryvov-GazodispersnSistem 1975, 139—41 CA 85, 8720(1976)... 

The effect of the particular functional group on adsorption, however, is not always the same as seen on oxide surfaces. For example, carboxylic acids adsorb strongly on metal oxide surfaces, and the heat of adsorption of stearic acid is higher than that of the corresponding ester, methyl stearate (Hironaka et al., 1978). For adsorption on the nascent surface, however, propionic acid is a poor adsorbate, and the adsorption activity of propionic acid is lower than that of methyl propionate. Although propyl amine adsorbs easily on metal oxide surfaces, the adsorption activity of propyl amine is low on the fresh steel surfaces. Also, the heat of adsorption of organic sulfides on iron oxide is less than that of esters (Forbes et al., 1970b), but the results of adsorption activity on the nascent surface were the opposite. It is thus noteworthy that the chemical nature of the nascent surface of steel is often opposite to that of oxide-covered metal surfaces, with respect to adsorption. 

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