Tag: M.W=300-400

COA of Formula: Al2H8O13S3. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: Aluminum(III) sulfate xhydrate, is researched, Molecular Al2H8O13S3, CAS is 17927-65-0, about Influence of the apparent molecular size of aquatic humic substances on color removal by coagulation and filtration. Author is Rigobello, Eliane Sloboda; Dantas, Angela Di Bernardo; Di Bernardo, Luiz; Vieira, Eny Maria.

This study aims to verify the influence of the apparent mol. size of aquatic humic substances (AHSs) on the effectiveness of coagulation with Al sulfate and ferric chloride. Coagulation-filtration tests using the jar test and bench-scale sand filters were carried out with H2O samples having a true color of ∼100 Hazen units and prepared with AHSs of different mol. sizes. Stability diagrams are presented showing regions of ≥ 90% and ≥ 95% apparent color removal delineated for each H2O sample using plots of total metal ion concentration (Al3+ and Fe3+) vs. coagulation pH. To achieve the same degree of color removal, the H2O samples with smaller apparent mol. sizes and a higher percentage of fulvic acids required higher dosages of both Al sulfate and ferric chloride.

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Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Journal of Alloys and Compounds called Influence of silica sources on morphology of mullite whiskers in Na2SO4 flux, Author is Zhang, Pengyu; Liu, Jiachen; Du, Haiyan; Li, Zhongqiu; Li, Shun; Chen, Chao, which mentions a compound: 17927-65-0, SMILESS is O=S(O)(O)=O.O=S(O)(O)=O.O=S(O)(O)=O.[H]O[H].[Al].[Al], Molecular Al2H8O13S3, Application of 17927-65-0.

The influence of crystalline form of silica on the morphol. of mullite whiskers in Na2SO4 flux was studied. Isolated mullite whiskers with 5 μm in average length were observed in the sample with amorphous and fused silica while clusters of mullite whiskers were obtained in the sample with quartz. Two distinct nucleation mechanisms were proposed to explain the morphol. of the mullite whiskers.

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Related Products of 17927-65-0. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: Aluminum(III) sulfate xhydrate, is researched, Molecular Al2H8O13S3, CAS is 17927-65-0, about Increase in the hydration activity and improvement in the structural-engineering properties of slag portland cement.

The sulfate-aluminate-silicate product, obtained as a tailing in the production of Al sulfate from kaolin clays, is used as an hardening accelerator for slag portland cement. The tailings consist of amorphous SiO2, metakaolinite [15123-81-6], Al2(SO4)3.nH2O, NaAl(SO4)2.12H2O, gypsum [13397-24-5], anhydrite [14798-04-0], and some Fe and Mg sulfates. Initial and final setting times and compressive and tensile strengths are determined of slag portland cements with 1 and 3% of these tailings and those with 1% coke dust. These additives increase the hydration activity of the slag portland cement and its frost resistance and decrease the shrinkage deformation.

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The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Aluminum(III) sulfate xhydrate, is researched, Molecular Al2H8O13S3, CAS is 17927-65-0, about The effect of the composition and of the calcination regimes of a mixture of aluminum and magnesium sulfates on the formation process of spinels, the main research direction is aluminum sulfate reaction magnesium sulfate; oxide aluminum magnesium spinel preparation condition.Formula: Al2H8O13S3.

During calcination of MgSO4-Al2(SO4)3.18H2O mixtures the completion of the formation of Al2MgO4 depends on excess H2SO4 or (NH4)2SO4 and on the rate of heating ≤1300°. The optimum parameters for the formation of Al2MgO4 are: H2SO4 content in Al2(SO4)3.18H2O is 0.5-3 mass%, region of thermal treatment is continuous, rate of increase of temperature is 300-600° h-1 and isothermal heating for 3-6 h at 1300°.

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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: Aluminum(III) sulfate xhydrate( cas:17927-65-0 ) is researched.Electric Literature of Al2H8O13S3.Svatovskaya, L. B.; Shiballo, V. G. published the article 《Dielectric measurements in the early stages of hardening of monomineral binders》 about this compound( cas:17927-65-0 ) in Zhurnal Prikladnoi Khimii (Sankt-Peterburg, Russian Federation). Keywords: monomineral binder hardening dielec property. Let’s learn more about this compound (cas:17927-65-0).

The dielec. permeability ε of cement hardening systems decreased immediately after preparing suspensions and condensation structures with water were formed having a lower ε. At the end of the hardening process, ε remained constant Because only a small part of the water was chem. bound, the decrease in ε could be connected with the orientation effect. The curves of dielec. losses of the hardening pastes had a complex cyclic character. According to crystallo-optical data, the cyclic character was connected with changes in the phase composition of 3CaO.Al2O3,3CaO.SiO2, and Al2(SO4)3 hydrates and in the 3CaO.Al2O3 + CaSO4 system with the discontinuities of hydrated sulfate aluminate and hydrated aluminate layers.

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Category: isothiazole. 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 The influence of environmental factor on the coagulation enhanced ultrafiltration of algae-laden water: Role of two anionic surfactants to the separation performance. Author is Zhu, Tingting; Qu, Fangshu; Liu, Bin; Liang, Heng.

With the acceleration of urbanization and the improvement of people′s living standards, more chems. that humans rely on are entering the city and surrounding water bodies. Anionic surfactants are one of the essential products for human beings. It is also one of the inducements that cause the eutrophication. The algae-laden water caused by eutrophication is a headache in the traditional water treatment process. To solve the problem, ultrafitration combined process was widely investigated to treat the algae-laden water. The presence of stimuli, low concentration anionic surfactant, probably interfere the performance of ultrafiltration process during algae-laden water treatment. In this study, the influence of two typical anionic surfactants, sodium dodecyl sulfate (SDS) and sodium dodecyl benzene sulfonate (LAS), on the performance of coagulation-enhanced ultrafiltration was investigated. The aluminum sulfate hydrate and iron sulfate hydrate were resp. employed as coagulant. Based on the residual turbidity and zeta potential, 4 mg/L Al and 8 mg/L Fe were determined as the optimal coagulant dosage. The floc morphol. confirmed that Al-algae flocs with lower fractal dimension (Df) were looser and more porous compared to Fe-algae flocs. More coagulant was depleted by LAS due to the better hydrophobicity of LAS. During the filtration process, LAS caused a larger flux reduction compared with SDS regardless of the coagulant that was used. More organic compounds penetrate into membrane pores and block the pores with the presence of LAS since algal cell aggregation was weakened. Finally, the rejection of organic compounds by the coagulation-enhanced ultrafiltration process was studied, and the co-existing surfactants can cause effluent deterioration. Therefore, the presence of surfactants has a neg. effect to the ultrafiltration treatment of algae-laden water.

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The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Aluminum(III) sulfate xhydrate, is researched, Molecular Al2H8O13S3, CAS is 17927-65-0, about Prilling of aluminum sulfate hydrates, the main research direction is prilling aluminum sulfate; drop formation aluminum sulfate prilling; jet breakup aluminum sulfate prilling.SDS of cas: 17927-65-0.

A prilling technique was used to produce droplets of aluminum sulfate hydrates in the size range of 2-2.5mm. Production of spherical particles of aluminum sulfate hydrates by using a prilling technique has never been studied, nor carried out. The effects of the orifice geometry and hydrostatic head on drop formation were measured. The flow rates of hydrated aluminum sulfate melt through bores of 0.08 and 0.11 cm were measured for liquid heads of 10-100 cm. It was found that the break-up of a liquid jet produced particles in the size range 2.0-2.5 mm with a 0.8 mm orifice. The modified Meister and Scheele correlation, which is the first application on a high viscous fluid in air system, was found to be satisfactory for estimating the particle size obtained by the jet break-up mechanism.

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Product Details of 17927-65-0. 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 Large-scale synthesis of mullite nanowires by molten salt method. Author is Huo, Kaifu; Zhu, Boquan; Fu, Jijiang; Li, Xuedong; Chu, Paul K..

Single-crystalline mullite (3Al2O3·2SiO2) nanowires have been produced in large quantities by a low cost and environmentally benign molten salt synthesis (MSS) method. The raw materials, Al2(SO4)3 and SiO2 powders, react in molten Na2SO4 at 1000 °C to produce mullite nanowires without the use of surfactants or templates. After the synthesis, the remaining salts can be easily separated from the products by washing with water. The final products are characterized by X-ray powder diffraction, field emission SEM, transmission electron microscopy, energy-dispersive X-ray spectroscopy, selected-area electron diffraction, and inductively coupled plasma-at. emission spectrometry. The thermal and chem. behavior of the raw materials is investigated by heating at a rate of 10 °C/min up to 1200 °C in air followed by thermogravimetric and differential scanning calorimetry analyses. The single-crystalline mullite nanowires have diameters of 30-80 nm and lengths from several hundreds of nanometers to micrometers and the growth mechanism is discussed.

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Quality Control of Aluminum(III) sulfate xhydrate. 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 Dielectric properties of calcium, zinc, magnesium, copper, aluminum, iron, manganese, nickel, and cobalt sulfates. Author is Sychev, M. M.; Shiballo, V. G.; Katushkin, V. P.; Ustinov, A. E..

The dielec. constant (κ) of various sulfate hydrates of Ca2+, Zn2+, Mg2+, Cu2+, Al3+, Fe2+, Mn2+, Ni2+, and Co2+ was studied in relation to the n (number of mols. of bound water); the κ increased with an increase in n. A rectilinear equation κ = α + n × tg β is derived, where α = κ of anhydrous salt and tg β = tangent of the angle of curve κ-n. The compressive strength of cement stones, containing these crystallohydrates, decreased with an increase in tg β of the salt.

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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 Image analysis of floc size distribution induced by two different impellers, the main research direction is image analysis floc size distribution impeller water.HPLC of Formula: 17927-65-0.

The goal is to analyze the relation between characteristic floc size and hydrodynamics. The 1st question concerned the relation between an average floc size and the viscous dissipation of kinetic energy. A series of flocculation experiments was conducted in a mixing tank with 2 impellers (a Rushton turbine and a Lightnin A310 impeller) for equivalent dissipated power conditions. The average floc size depended on the global dissipation rate whatever the impeller type. However, the floc size distributions are significantly different for each impeller. This difference can be explained by the spatial distribution of the dissipation rate of the turbulent kinetic energy, which depends on impeller type. The 2nd question concerned the dependence of the floc size to the history of mixing. The flocculation experiments show that the floc size distributions was reproducible once the flocs had been submitted to the highest velocity gradient.

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