![]() View information & documentation regarding AMMONIUM. Serves the aerospace, agriculture, automotive, cosmetics, nuclear, oil, gas and pharmaceutical industries. These four LDHs differ by their stacking sequences and interlamellar distances and can be selectively obtained. Alfa Chemistry offers AMMONIUM CHROMIUM(III) SULFATE 12-WATER for experimental / research use. Manufacturer of reagent crystalline chromium sulfate. A second rhombohedral variety with d≈10.9 Å is reversibly obtained from the “8.9 Å” phase under high relative humidity. Uses : chromium sulphate is an intermediate chemical used in the manufacture of other organic and inorganic chromium compounds. Under dry air, the loss of intercalated water leads to a 3R rhombohedral variety with d≈8.2 Å. ![]() Depending on pH conditions, the washing process, and the nature of the monovalent cation, the sulfate intercalated compounds exhibit two 2H hexagonal varieties with different layer spacings d≈8.9 Å and d≈11 Å at room temperature this last phase is related to the insertion of alkaline interlamellar cations. ![]() The compounds are characterized by chemical analysis, powder X-ray diffraction, and infra-red spectroscopy. Basic chromium sulfate Cr(OH)SO4, or chromium hydroxide suflate, is made via the reduction of sodium dichromate. 716.45 g/mol (octadecahydrate) Appearance. The materials obtained in a reactor containing a sodium sulfate solution are compared with those prepared from lithium, potassium, and ammonium sulfate solutions. Cr2(SO4)3 12H2O Molar mass, 392.16 g/mol 608.363 g/mol (dodecahydrate). The synthesis of zinc–chromium lamellar double hydroxides (LDHs) intercalated by sulfate anions is carried out with a one-step method that combines coprecipitation and anionic exchange. ![]()
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