Ferric ammonium sulfate

Ammonium ferric sulfate (I2H2O) [7783-83-7 (12H20), lOI38-04-2 (anhydr)] M 482.2, m -37 , d 1.71. Crystd from aqueous ethanol. 

Feiri-. ferric, ferri-, iron(III). -acetat, n. ferric acetate, iron(IIl) acetate, -ammonsulfat, n. ammonium ferric sulfate, -bromid, n. ferric bromide, iron(III) bromide, -chlorid, n. ferric chloride, iron(lll) chloride, -chlor-wasserstoff, -chlorwasserstoffsMure, /. fer-richloric acid. -cyan, n. ferricyanogen. -cyaneisen, n. ferrous ferricyanide (Turn-bull s blue), -cyanid, n. ferric cyanide, iron(III) cyanide ferricyanide. 

Synonyms ferric ammonium sulfate ammonium ferric sulfate iron alum ferric alum ferric ammonium alum... 

Ammonium ferric sulfate (I2H2O) d 1.71. Crystd from aqueous ethanol. 

Chloride may be determined by the Volhard method. The sample is acidified with concentrated nitric acid and silver nitrate is added, which reacts with the chloride, and then the mixture is boiled. After cooling, the pale yellow solution is diluted and the excess silver nitrate titrated with potassium thiocyanate solution using ammonium ferric sulfate as indicator. The ash may also be used for this determination. 

Reagents. Ammonium ferric sulfate solution - dissolve 12 g of AnalaR ammonium ferric sulfate in water and add 40 ml of AnalaR nitric acid. Dilute to 100 ml and filter. 

Transfer 5 ml of the test solution to a 50 ml beaker and add 1 ml of ammonium ferric sulfate solution. Mix the solution and add 1.5 ml of mercuric thiocyanate solution. Mix and dilute to 10 ml. Treat the blank solution in a similar manner. When chlorine is present in the sample an orange colour will be developed in the test solution compared with yellow coloured blank solution. If a semi-quantitative estimation of chlorine is required, set the solutions aside for 10 minutes and measure the optical density of the test solution against the blank solution at 460 nm in 2 cm cells. 

Eisen-alaun, m. iron alum (ferric potassium sulfate), -amiant, m. (Iron) fibrous silica.. ammonaiauQ, m. ammonium ferric alum.. ammonaiaunldsuQg, /. solution of ammonium iron salt, esp. ammonium ferric alum. -antimonerZ) n., -antimonglanz, m. berthier-ite. 

Aluminum citrate Chromium sulfate Ferrochromo-lignosulfonate Manganese nitrate Potassium hichromate Sodium bichromate Ferric acetylacetonate Ammonium ferric oxalate... 

NH4)2S04 forms many double salts (ammonium metal sulfates) when its solution is mixed with equimolar solutions of metal sulfates and the solution is slowly evaporated. Such double metal sulfates include ammonium cobal-tous sulfate, (NH4)2Co(S04)2 ferric ammonium sulfate, (NH4)2Fe(S04)2, ammonium nickel sulfate, (NH4)2Ni(S04)2 and ammonium cerous sulfate, NH4CeS04. 

Ferric ammonium sulfate is prepared by mixing an equimolar solution of ferric sulfate, Fe2(S04)3, and ammonium sulfate, (NH4)2S04. Hydrated crystals are obtained following evaporation and cooling of the solution. 

Synonym Ammonia Water Amfbnioformaldehyde Ammonium Acetate Ammonium Acid Fluoride Ammonium Amidosulfonate Ammonium Amidosulphate Ammonium Benzoate Ammonium Bicarbonate Ammonium Bichromate Ammonium Bifluoride Ammonium Carbonate Ammonium Chloride Ammonium Citrate Ammonium Citrate, Dibasic Ammonium Decaborate Octahydrate Ammonium Dichromate Ammonium Disulfate-Nickelate (II) Ammonium Ferric Citrate Ammonium Ferric Oxalate Trihydrate Ammonium Ferrous Sulfate Ammonium Fluoride Ammonium Fluosilicate Ammonium Formate Ammonium Gluconate Ammonium Hydrogen Carbonate Ammonium Hydrogen Fluoride Ammonium Hydrogen Sulfide Solution Ammonium Hydroxide Ammonium Hypo Ammonium Hyposulfite Ammonium Iodide Ammonium Iron Sulfate Ammonium Lactate Ammonium Lactate Syrup Ammonium Lauryl Sulfate Ammonium Molybdate Ammonium Muriate Ammonium Nickel Sulfate Ammonium Nitrate Ammonium Nitrate-Urea Solution Ammonium Oleate... 

Fermentation Alcohol Fermentation Amyl Alcohol Fermentation Butyl Alcohol Ferric Ammonium Citrate Ferric Ammonium Citrate, Brown Ferric Ammonium Citrate, Green Ferric Ammonium Oxalate Ferric Chloride Ferric Chloride, Anhydrous Ferric Chloride, Hexahydrate Ferric Glycerophosphate Ferric Nitrate Ferric Nitrate Nonahydrate Ferric Sulfate... 

Dissolve 100 g. of commercial ferrous sulfate (copperas) in 400 cc. of hot water to which has been added 1 or 2 cc. of sulfuric acid and then add an equimolecular weight of ammonium sulfate, remembering that the formula for ferrous sulfate is FeS04-7H20. It is well to add a bright iron nail and keep the solution hot for a time to reduce any ferric sulfate which may be present. Bring... 

As a preliminary, ferric sulfate is made by the oxidation of ferrous sulfate. Dissolve 100 g. of ferrous sulfate in 100 cc. of boiling water, to which has been added before heating 10 cc. of sulfuric acid. Add concentrated nitric acid portionwise to the hot solution, until a diluted sample gives a reddish-brown (not black) precipitate with ammonia. This will require about 25 cc. Boil the solution down to a viscous liquid to get rid of excess nitric acid, dilute to about 400 cc., and add the calculated weight of ammonium sulfate. The crystallization is conducted as in the former exercise, preferably under 20°. By the addition of potassium sulfate, the corresponding potassium iron alum may be secured. In this case, it is necessary to concentrate the solution until there is about four parts of water to one of the hydrated alum and cool to about zero to secure crystallization. Both of these alums are amethyst in color, the potassium salt being much less stable and having a rather low transition point. 

FeNH4(S04)2 (aq.). Berthelot5 measured the heat of mixing aqueous ferric sulfate with aqueous ammonium sulfate. 

Synonyms Ammonio-ferric alum, Ammonio-ferric sulfate, Ammonium sulfate, Ferric ammonium alum, Ferric ammonium sulfate, Ferric alum, Iron ammonia sulfate, Iron ammonium alum, Iron sulfate. 

As the ferrous salt, Knecht used iron ammonium sulfate (Mohr salt) and oxidized this to ferric sulfate with 0.02 N potassium permanganate in sulfuric acid solution. The resulting ferric salt was then back-titrated with titanium trichloride solution. The other, equally simple method consists in dissolving pure iron wire in pure hydrochloric acid and oxidizing the ferrous chloride solution with a few drops of bromine. The excess bromine is removed by boiling and the solution is titrated with the titanium trichloride solution. 

A recent report by Haver et al. (H16) described the recovery of lead and. sulfur from a lead sulfide concentrate using ferric sulfate as the leaching reagent. Elemental sulfur was produced during the oxidation of lead sulfide to lead sulfate by hot ferric sulfate solution. The lead sulfate in the re.sidue was changed to acid-soluble lead carbonate by treatment with ammonium carbonate, and ammonium sulfate was a by-product. Hydro-fluosilicic acid dissolved the lead carbonate and an electrolysis step regenerated the HjSiF and deposited 99.9% pure lead metal. The recovery for lead was about 90% and for sulfur, 67%, half as elemental sulfur and the other half as ammonium sulfate. 

Chemical properties of iron. Passivity. Ferrous compounds ferrous sulfate, ferrous ammonium sulfate, ferrous chloride, ferrous hydroxide, ferrous sulfide, ferrous carbonate. Ferric compounds ferric nitrate, ferric, sulfate, iron alum, ferric chloride, ferric hydroxide, ferric oxide (rouge, Venetian red). Potassium ferro-cyanide, potassium ferricyanide, Prussian blue. 

Derivation By mixing solutions of ferric sulfate and ammonium sulfate followed by evaporation and crystallization. 

Make a small amount of approximately O.IM solution of this salt. Place equal volumes of this solution and of 0.05M ferric sulfate solution in two test tubes side by side. Both solutions contain the same concentration of iron. Add the same amount of potassium thiocyanate solution to each. Repeat with 0.05M ferric ammonium sulfate. Note the colors before and after adding thiocyanate, and explain. 

Chromium acetate (ic) Copper cyanide Cumene hydroperoxide 1,3-Dibromo-5,5-dimethyl hydantoin Dicumyl peroxide Dimethyl ether Ferric sulfate Ferrous ammonium sulfate Hydrazine Lithium aluminum hydride... 

Poly [oxyethylene (dimethyliminio) ethylene (dimethyliminio) ethylene dichloride] coagulant, wastewater Polyaluminum chloride coagulant, wastewater treatment Acrylates/acrylamide copolymer Polyaluminum hydroxide chloride sulfate Poly (2-hydroxypropyl-N,N-dimethyl ammonium chloride) Polyquaternium-6 coagulant, water clarification Polyquaternium-6 coagulant, water purification Ammonium alum Ferric sulfate coagulant, water purification plants Aluminum sulfate coagulant, water treatment Acrylates/acrylamide copolymer Aluminum chloride anhydrous Bentonite Calcium hydroxide Calcium monocarbonate Calcium oxide Cetrimonium chloride Diethylaminoethyl acrylate dimethyl sulfate quat. Dimethylamine/epichlorohydrin copolymer Dimethylaminoethyl acrylate dimethyl sulfate... 

Ammonium polysulfide Calcium hydroxide Calcium sulfate Calcium sulfate dihydrate Ferric sulfate... 

PEG-45M Poly (2-hydroxypropyl-N,N-dimethyl ammonium chloride) Polyquaternium-6 flocculant, water clarification Polyquaternium-6 flocculant, water purification Ferric sulfate... 

Cupric sulfate anhydrous Cupric sulfate pentahydrate Direct brown 95 Ferric ammonium ferrocyanide Ferric chloride Ferric chloride hexahydrate Ferric sulfate Lead chromate oxide Lead molybdate Mercury sulfide (ic), black Mercury sulfide (ic), red Molybdenum trioxide 3-Naphthol Nonoxynol-55 Phosphomolybdic acid... 

Ammonium citrate tribasic Ammonium fluoborate Ammonium-12-molybdosilicate Ammonium phosphomolybdate Basic blue 9 Bromodichloromethane t-ButyIdimethylsilyl imidazole Chromium chloride (ous) Dimethyl acetamide Dimethyl formamide Ethoxydiglycol acetate Ethyl acetate Ethylbenzene Ethyl formate Ferric sulfate Formic acid Heptane Hexamethylenetetramine Isopropyl ether Methyl cyclohexane 2,7-Naphthalenediol ... 

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