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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Reference:
Isothiazole – Wikipedia,
Isothiazole – ScienceDirect.com