![]() Units of solubility are given in grams per 100 grams of water (g/100 g or g/100 ml). The table below provides information on the of solubility of different substances in water, at different temperatures, at 1 atmosphere of pressure. Units of solubility are given in grams per 100 grams of solvent (g/100 g). Unless specified, the methanol is considered anhydrous. The table below provides information on the of solubility of different substances in methanol, at different temperatures, at 1 atmosphere of pressure. Unless specified, the heptane is considered water-free. The table below provides information on the of solubility of different substances in heptane, at different temperatures, at 1 atmosphere of pressure. Unless specified, the ethanol is considered anhydrous. The table below provides information on the of solubility of different substances in ethanol, at different temperatures, at 1 atmosphere of pressure. Unless specified, the diethyl ether is considered water-free. The table below provides information on the of solubility of different substances in diethyl ether, at different temperatures, at 1 atmosphere of pressure. Units of solubility are given in grams per 100 grams of solvent (g/100 g). Organic solvents, No data, Soluble in ethanol, ethyl ether, sulfuric and nitric acids. Unless specified, the DCM is considered water-free. The table below provides information on the of solubility of different substances in dichloromethane, at different temperatures, at 1 atmosphere of pressure. Solubility of chemicals in dichloromethane Unless specified, the butyl acetate is considered water-free. The table below provides information on the of solubility of different substances in butyl acetate, at different temperatures, at 1 atmosphere of pressure. Unless specified, the acetone is considered anhydrous. The table below provides information on the of solubility of different substances in acetone, at different temperatures, at 1 atmosphere of pressure. Solubility of chemicals in solvents Solubility of chemicals in acetone 1.7 Solubility of chemicals in methanol.1.4 Solubility of chemicals in diethyl ether.1.3 Solubility of chemicals in dichloromethane.1.2 Solubility of chemicals in butyl acetate.It was also used in gelatine emulsions in photographic film as hardener. However, this application is obsolete because the simpler chromium(III) sulfate is preferred. Uses Ĭhromium alum is used in the tanning of leather as chromium(III) stabilizes the leather by cross linking the collagen fibers within the leather. ![]() In addition to the dodecahydrate, the hexahydrate KCr(SO 4) 2♶H 2O, dihydrate KCr(SO 4) 2♲H 2O, and the monohydrate KCr(SO 4) 2 Aqueous solutions are dark violet and turns green when it is heated above 50 ☌. The solution reddens litmus and is an astringent. Chromium alum crystallizes in regular octahedra with flattened corners and is very soluble in water. Alternatively and less commonly, ferrochromium alloys can be dissolved in sulfuric acid and, after precipitation of the ferrous sulfate, the chrome alum crystallizes upon addition of potassium sulfate. Concentrated aqueous solutions of potassium dichromate can be reduced, usually with sulfur dioxide but also with alcohols or formaldehyde, in the presence of sulfuric acid at temperatures <40 ☌. Production and properties Chrome alumĬhromium alum is produced from chromate salts or from ferrochromium alloys. Its chemical formula is KCr(SO 4) 2 and it is commonly found in its dodecahydrate form as KCr(SO 4) 2♱2(H 2O). Chrome alum or Chromium(III) potassium sulfate is the potassium double sulfate of chromium.
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