![]() ![]() Chrom(III)-sulfat (Cr2(SO4)3) ist ein Salz der Schwefelsäure.Vytváří různě barevné hydráty, nejčastěji dodekahydrát a oktadekahydrát. Síran chromitý je anorganická látka rozpustná ve vodě se vzorcem Cr2(SO4)3.Warehouse is low temperature, ventilated and dry Fire prevention Store separately from strong oxidant Storage and transportation characteristics Non-combustible substances thermal decomposition of toxic chromium and sulfur oxide fumes after 2~3 times, filter while hot, evaporate and concentrate the filtrate to syrup, and coat it on the glass plate (1kg/m2), evaporate and dry at 800 ℃. under constant stirring, add a theoretical amount of sulfuric acid with a density of 1.61 to chromium hydroxide and stand at 70 ℃, stir occasionally, and sometimes supplement the evaporated water. ![]() Used in printing, ceramics, leather and other industriesġ. Used in printing and dyeing, ceramics, insoluble gels, and manufacturing chromium-containing catalysts, tanning, paints and inks ![]() ![]() To remove crystal water, CO2 flow at 280 ℃ can be used for dehydration.ĭissolved grams per 100ml of water: 220g/20 ℃ However, regarding the above reaction, the obtained chromium sulfate contains crystal water (ie hydrated chromium sulfate). the side substances are potassium sulfate and water:Ĥ K2Cr2O7 13 H2SO4 3 H2S → 4 Cr2(SO4)3 4 K2SO4 16 H2OĮthanol can also be used instead of hydrogen sulfide, the difference is that in addition to producing chromium sulfate and potassium sulfate, acetic acid and water are also produced.Ģ K2Cr2O7 8 H2SO4 3 C2H5OH → 2 Cr2(SO4)3 2 K2SO4 3 CH3COOH 11 H2O the most common way is to form chromium sulfate by the reaction of potassium dichromate and hydrogen sulfide. Chromium sulfate hydrate can be made by reacting trivalent chromium oxide, such as chromium trioxide and sulfuric acid.Ĭhromium sulfate can also be prepared by the reduction reaction of dichromate. Information provided by: (external link)Ĭhromium sulfate is reduced from chromium salt and sulfur dioxide, but there are still other methods. It is also used as an analytical reagent, a mordant, and a raw material for making green inks, green paints, ceramic glazes, and other chromium salts, such as chromium trioxide.įor printing, ceramics, leather and other industries Soluble in water, slightly soluble in ethanol.Īfter reacting chromium hydroxide with sulfuric acid, it is obtained by natural evaporation and crystallization.Ĭhromium sulfate is widely used as mordant for tanning or textile, and in the preparation of chrome alum. A relative density of 1.70(22/4 °c), with loss of 12 molecules of crystal water at 100 °c.
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