Category: 17927-65-0

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 17927-65-0, is researched, Molecular Al2H8O13S3, about State of water in the dehydration products of beryllium and aluminum sulfates, the main research direction is NMR dehydration product hydrate; beryllium sulfate hydrate NMR; aluminum sulfate hydrate NMR; magnesium sulfate hydrate NMR.Quality Control of Aluminum(III) sulfate xhydrate.

The NMR of BeSO4.4H2O, Al2(SO4)3.18H2O and of the products of their dehydration were determined Some details of the NMR spectra of MgSO4.7H2O and its dehydration products were also investigated. Substantial increase of the interproton distance was observed in all the sulfates studied possessing low amounts of H2O. This phenomenon is explained by the strong polarization of the H2O mols. and by expansion of the O-H bonds.

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Electric Literature of Al2H8O13S3. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Aluminum(III) sulfate xhydrate, is researched, Molecular Al2H8O13S3, CAS is 17927-65-0, about The thermal decomposition of aluminum sulfate in different gas phase environments. Author is Pelovski, I.; Petkova, V.; Gruncharov, I.; Pacewska, B.; Pysiak, J..

The thermal decomposition of Al2(SO4)3.xH2O was studied. The process was faster in a reducing atm. (Ar:H 95:5 volume %) but the mechanism remained constant Al2O(SO4)2 formed as intermediate in both cases. A 2-step mechanism is proposed.

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Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Aluminum(III) sulfate xhydrate, is researched, Molecular Al2H8O13S3, CAS is 17927-65-0, about Aluminum effect on lipid peroxidation and on the activities of superoxide dismutase and catalase in the cerebral hemisphere and liver of young chickens.Category: isothiazole.

Al was injected (i.p.) as aluminum sulfate (4, 40, and 100 mg/kg body weight, n = 5 per group) daily into day-old White Leghorn male chickens for 7, 15 and 30 days. Al treatment (100 mg dose) to chickens over 7 and 30 days resulted in a decrease in activities of cytosolic total and CN–sensitive superoxide dismutase (SOD) in the cerebral hemisphere (CH). In the 15-day treated group, activities of cytosolic total, CN–sensitive and CN–insensitive SOD of CH were decreased in response to all Al doses. In the liver, activities of cytosolic total and CN–sensitive SOD were decreased in response to all doses of Al treatment for 7 and 15 days. But 40 and 100 mg doses were effective in decreasing activities of the enzymes in the 30-day treated group. The catalase (CAT) activity of CH of chicks was inhibited by all doses of Al under treatment for 7 days, but was inhibited only in the case of the 100 mg dose when the duration of treatment was increased to 15 days. The inhibition was again observed in chickens treated for 30 days in response to 40 and 100 mg doses . CAT activity of liver was decreased in response to all Al doses in the 7-day treated group and in response to 40 and 100 mg doses in the 15- and 30-day treated groups. Al treatment did not affect lipid peroxide levels of CH and liver of chickens.

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Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Aluminum(III) sulfate xhydrate, is researched, Molecular Al2H8O13S3, CAS is 17927-65-0, about Controlled aggregation of colloidal particles for toner applications.SDS of cas: 17927-65-0.

Micrometer-sized particles were formed by controlled aggregation of carboxylated polystyrene colloidal spheres having a mean diameter of about 200 nm with a com. cationic coagulant. To identify the parameters governing the size and structure of the aggregates, the aggregate size distribution was studied over a period of time with dynamic light scattering. The effect of the particle concentration, pH, and ionic strength on the aggregation behavior was investigated. The coagulant concentration used for present studies was 5 parts per hundred on the basis of the polystyrene particles and the particle concentrations used were 10-15%. The particle size distribution for the latex suspensions was also investigated with a 10% aluminum sulfate [Al2(SO4)3·14H2O] solution as a model coagulant. With the com. coagulant, aggregation was found to be slower at lower pH than at neutral pH. At pH 6, the particles started to aggregate within minutes and form aggregates of about 1000 nm. The authors expected that lowering the pH would reduce interparticle repulsive forces and enhance the collision efficiency. However, at a lower pH of 2, the aggregation process slowed down. Increasing the ionic strength at neutral pH led to a broader aggregate size distribution, and the population of larger aggregates increased. The suspensions with the model coagulant showed similar behavior. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011.

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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: Aluminum(III) sulfate xhydrate(SMILESS: O=S(O)(O)=O.O=S(O)(O)=O.O=S(O)(O)=O.[H]O[H].[Al].[Al],cas:17927-65-0) is researched.Synthetic Route of C14H8BF4Rh. The article 《State of water in the dehydration products of beryllium and aluminum sulfates》 in relation to this compound, is published in Doklady Akademii Nauk SSSR. Let’s take a look at the latest research on this compound (cas:17927-65-0).

The NMR of BeSO4.4H2O, Al2(SO4)3.18H2O and of the products of their dehydration were determined Some details of the NMR spectra of MgSO4.7H2O and its dehydration products were also investigated. Substantial increase of the interproton distance was observed in all the sulfates studied possessing low amounts of H2O. This phenomenon is explained by the strong polarization of the H2O mols. and by expansion of the O-H bonds.

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Quality Control of Aluminum(III) sulfate xhydrate. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Aluminum(III) sulfate xhydrate, is researched, Molecular Al2H8O13S3, CAS is 17927-65-0, about Synthesis of hexagonal plate-like α-alumina crystals by using hydrated aluminum sulfate as the starting material. Author is Daimon, Keiji; Kato, Etsuro.

Hexagonal plate-like α-Al2O3 crystal was prepared by dehydration of Al2(SO4)3.14-18 H2O (I) at 300° for 24 h or at 200° under reduced pressure, followed by the formation of η-Al2O3, by heating the anhydrous Al2(SO4)3 at 900° for 4 h and finally by mixing with 25% weight AlF3 and heating in Pt tube at 900-1200°. The particle size distribution of α-Al2O3 was wider for the I dehydrated at 200° under reduced pressure than for the I which was dehydrated by evaporation after it was dissolved in water. The particle size of α-Al2O3 obtained by 900° heat-treatment was greater than that obtained by 1100° heat-treatment.

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Electric Literature of Al2H8O13S3. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Aluminum(III) sulfate xhydrate, is researched, Molecular Al2H8O13S3, CAS is 17927-65-0, about Synthesis of hexagonal plate-like α-alumina crystals by using hydrated aluminum sulfate as the starting material. Author is Daimon, Keiji; Kato, Etsuro.

Hexagonal plate-like α-Al2O3 crystal was prepared by dehydration of Al2(SO4)3.14-18 H2O (I) at 300° for 24 h or at 200° under reduced pressure, followed by the formation of η-Al2O3, by heating the anhydrous Al2(SO4)3 at 900° for 4 h and finally by mixing with 25% weight AlF3 and heating in Pt tube at 900-1200°. The particle size distribution of α-Al2O3 was wider for the I dehydrated at 200° under reduced pressure than for the I which was dehydrated by evaporation after it was dissolved in water. The particle size of α-Al2O3 obtained by 900° heat-treatment was greater than that obtained by 1100° heat-treatment.

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Computed Properties of Al2H8O13S3. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Aluminum(III) sulfate xhydrate, is researched, Molecular Al2H8O13S3, CAS is 17927-65-0, about Effect of shear schedule on particle size, density, and structure during flocculation in stirred tanks. Author is Spicer, Patrick T.; Pratsinis, Sotiris E.; Raper, Judy; Amal, Rose; Bushell, Graeme; Meesters, Gabrie.

The effect of shear history on the evolution of the polystyrene-alum floc size, d., and structure is investigated by small-angle light scattering during cycled-shear and tapered-shear flocculation in a stirred tank using a Rushton impeller. First, various sampling schemes are exptl. evaluated. The floc structure is characterized by the mass fractal dimension, Df, and the relative floc d. During turbulent shear flocculation, small floc structures are shown to be more open (Df=2.1) than larger floc structures (Df=2.5) as a result of shear-induced restructuring during steady state attainment. Flocs produced by cycled-shear flocculation are grown at shear rate G=50 s-1 for 30 min, are fragmented at Gb=100, 300, or 500 s-1 for one minute, and then are regrown at G=50 s-1. This shear schedule decreases the floc size but compacts the floc structure. When flocs are produced by gradual reduction of the shear rate from G=300 to 50 s-1 (tapered-shear flocculation), smaller though equally dense flocs are produced compared with cycled-shear flocculation. The cycled-shear flocculation method produces the largest flocs with the highest potential for sedimentation when the fragmentation shear rate is Gb=300 s-1.

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Product Details of 17927-65-0. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Aluminum(III) sulfate xhydrate, is researched, Molecular Al2H8O13S3, CAS is 17927-65-0, about Raman microscopy study of basic aluminum sulfate. Author is Kloprogge, J. T.; Frost, R. L..

The tridecameric Al Keggin cluster [AlO4Al12(OH)24(H2O)12]7+ was prepared by forced hydrolysis of Al3+ up to an OH/Al molar ratio of 2.2. Upon addition of sulfate the tridecamer crystallized as the monoclinic basic aluminum sulfate Na0.1[AlO4Al12(OH)24(H2O)12](SO4)3.55. These crystals were studied using FT-Raman microscopy and compared to basic aluminum nitrate, Na2SO4.xH2O and Al2(SO4)3.xH2O. The Raman spectrum of basic aluminum sulfate is dominated by two broad bands which are assigned to the ν1 and ν3 bands at 981 and 1051 cm-1 of the sulfate group in the Al13 sulfate structure. Also the band at 724 cm-1 is assigned to an Al-O mode of the polymerized Al-O-Al bonds in the Al13 Keggin structure. The sharp band at 1066 cm-1 and the minor band at 1384 cm-1 are interpreted as a small amount of nitrate impurity on a different position in the structure than the nitrate present in the Al13 nitrate crystal structure, based on the shift in band position of both the ν1 sym. stretching and ν3 asym. stretching modes.

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Daimon, Keiji; Kato, Etsuro published an article about the compound: Aluminum(III) sulfate xhydrate( cas:17927-65-0,SMILESS:O=S(O)(O)=O.O=S(O)(O)=O.O=S(O)(O)=O.[H]O[H].[Al].[Al] ).Synthetic Route of Al2H8O13S3. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:17927-65-0) through the article.

The effects of milling of the precursor, Al2(SO4)3 (14-18)H2O, on η → α phase transformation and sinterability of α-Al2O3 were studied. Milling of the hydrated sulfate lowered the temperatures of dehydration, desulfation, and η → α phase transformation by about 30°, 20°, and 100°, resp. Dehydration of hydrated sulfate produced broken-eggshell-like anhydrous sulfate particles through melting of the hydrate in its water of crystallization On heating, the milled hydrated sulfate converted to anhydrous particles composed of finer sulfate particles. The anhydrous sulfate desulfated into aggregate grains of η-Al2O3 with an irregular pore size distribution. This η-Al2O3, finally formed skeletal grains of α-Al2O3 in which many cracks were produced. The optimum calcination temperature to prepare α-Al2O3 powder for sintering was lowered and the sinterability was improved by the milling treatment. The slope of Avrami-plots for η → α phase transformation indicated a 2-dimensional growth of α-Al2O3. The apparent activation energy for the transformation was 110 kcal/mol, which remained unchanged with milling. The enhancement of η → α phase transformation was due to accelerated nucleation in η-Al2O3 grains, and the sinterability of the α-Al2O3 was improved by an increase in the d. of green compacts, resulting from the occurrence of many cracks in the skeletal grains of α-Al2O3.

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