Cupric ammonium sulfate

Blau-warme, /. (Metal.) blue heat, -wasser, n. eau celeste (cupric ammonium sulfate solution). -wassergas, n. blue water gas, blue gas. 

What is the difference in constitution between tetrammine cupric sulfate and cupric ammonium sulfate ... 

Anunonium persulfate solution, normally made up at 20 percent, is acidic. Hydrolysis reactions and etchant use cause a reduction of the pH from 4 to 2. The persulfate concentration is lowered, and hydrated cupric ammonium sulfate [CUSO4 (NH4)2S04 6H2O] is formed. This precipitate may interfere with etching. 

Copper. Some 15 copper compounds (qv) have been used as micronutrient fertilizers. These include copper sulfates, oxides, chlorides, and cupric ammonium phosphate [15928-74-2] and several copper complexes and chelates. Recommended rates of Cu appHcation range from a low of 0.2 to as much as 14 kg/hm. Both soil and foHar appHcations are used. 

NH3.H20 mw 245.8, dk blue cryst pdr. This compd,known since 1693 (Ref 3), can be prepd by dissolving cupric sulfate in Amm hydroxide and precipating with ale. Used in manuf of Cu arsenate, insecticides treating fiber products Refs 1) Mellor 3(1923), 253 (Monohydrated cupric tetrammino sulfate 2) Sax (1957), 502 (Called Copper ammonium sulfate) 3) Gmelin,... 

Attempted catalysis. A number of experiments were carried out to test the possible catalytic activity of substances such as potassium carbonate, cupric carbonate, ammonium chloride, ammonium sulfate, potassium silicate, boron phosphate, and silica gel, but in no case was there any indication that the reaction could be catalyzed. 

Pregnant solution from the leaching circuit contains typically 40-50 g/L nickel, 0.7-1.0 g/L cobalt, 5-]0g/L copper, 120-180 g/L ammonium sulfate. 5-10 g/L sulfor as thiosulfate and polythionates. and 85-100 g/L Tree ammonia.1 Copper removal requires inilia] reseoval of ammonia followed by ptacipilation of copper in the form of coppar sulfides. The unoxidized sulfur in solution assists in the precipitation process. Removal of ammonia by steam injection releases cupric ions to react with these sulfur compounds, as shown by the reactions ... 

Phenyl mercuric nitrate, iodoacetate, thiourea, and ammonium sulfate stimulated arsenite-oxidizing activity, whereas cupric ion, and p-chloromercuriben-zoate inhibited it significantly. Legge (8) showed that cytochromes associated with the solid fraction from broken cells of P. arsenoxydans-quinque played a role in aerobic oxidation of arsenite. 

Cupric chloride and ferrous ammonium sulfate were then successfully used as inorganic inhibitors to prevent homopolymerization in the liquid phase. Films were sealed in 50% acrylic acid aqueous solution saturated with the inorganic inhibitor under nitrogen gas and irradiated with y-rays at a dose rate of 0.13 Mrad/hr at room temperatures. After irradiation, the films were washed with water. The results are presented in Figure 6. The weight increase varied linearly with dose. The rate of grafting with ferrous ammonium sulfate was higher than that with cupric chloride. 

Fig 6. Graftings of acrylic acid to dense polyvinyl chloride film in 50% acrylic acid aqueous solution saturated with cupric chloride (O) and ferrous ammonium sulfate (A)- Dose rate 0.13 Mrads per hr. 

The formation of (II) provides a quite selective spot test for palladium. Gold must be removed prior to the test because it will cause the development of a deep ruby red in the spot plate test and a diffused violet spot on the paper, apparently due to the reduction of the gold ions to the colloidal metal. Interference may also arise from 0s04 , Os+, Ru+, and RuCle ions because they have distinct self-colors. Mercurous ion causes partial interference by the reduction of part of the palladium to the elementary state, but a positive response can still be seen. It is possible to detect I part of palladium in the presence of 200 parts of platinum or 100 parts of rhodium. Less favorable ratios should be avoided because of the color of these salts. No interference is caused by mercuric and iridic chloride, but free ammonia, ammonium ions, stannous, cyanide, thiocyanate, fluoride, oxalate, and tetraborate ions do interfere. Lead, silver, ferrous, ferric, stannic, cobaltous, nickel, cupric, nitrite, sulfate, chloride, and bromide ions do not interfere. 

Nitrobenzo[6]thiophene may be prepared by reaction of the 3,4-dinitro compound with alcoholic ammonium sulfide422-538 other workers have claimed that this method yields only traces of the desired product.84 It may also be prepared by deamination of 5-amino-4-nitrobenzo[6]thiophene,162,422 or by decomposition of 4-benzo[6]-thiophene diazonium cobaltinitrite with aqueous sodium nitrite in the presence of cuprous oxide and cupric sulfate.84 7-Nitrobenzo[6]-thiophene may be obtained by the latter method (15% yield) from the corresponding amine.84... 

C. Preparation of the reducing agent. One hundred and twenty-five grams (0.5 mole) of cupric sulfate pentahydrate is dissolved in 500 ml. of water contained in a 3-1. three-necked flask equipped with a mechanical stirrer, and then 210 ml. of concentrated ammonium hydroxide (sp. gr. 0.90) is added with stirring. The solution is cooled to 10°. A solution of 40 g. (0.575 mole) of hydroxylamine hydrochloride in 140 ml. of water is prepared and also cooled to 10°. To the hydroxylamine hydrochloride solution there is added 95 ml. of 6 A sodium hydroxide solution, and if not entirely clear, it is filtered by suction. This hydroxylamine solution is immediately added to the ammoniacal cupric sulfate solution with stirring. Reduction occurs at once with the evolution of nitrogen, and the solution becomes pale blue. If this solution is not used at once, it should be protected from the air. 

Hydroxylamine Hydrochloride Solution Dissolve 20 g of hydroxylamine hydrochloride in sufficient water to make about 65 mL, transfer the solution into a separator, add a few drops of thymol blue TS, then add ammonium hydroxide until the solution assumes a yellow color. Add 10 mL of a 1 25 solution of sodium diethyldithiocarbamate, mix, and allow to stand for 5 min. Extract the solution with successive 10- to 15-mL portions of chloroform until a 5-mL test portion of the chloroform extract does not assume a yellow color when shaken with cupric sulfate TS. Add 2.7 N hydrochloric acid until the extracted solution is pink, adding 1 or 2 drops more of thymol blue TS if necessary, then dilute to 100 mL with water, and mix. 

Inorganic copper compounds include cuprous oxide cupric oxide copper hydroxide copper carbonate basic copper ammonium carbonate copper acetate copper sulfate copper sulfate, tribasic (Bordeau Mixture) copper oxychloride copper silicate copper lime dust and copper potassium sulfide. Figure 5.10 shows a package of Kocide 101, copper containing products. 

An ion which contains several atoms, such as the sulfate ion, SO4 is called a complex ion. Familiar examples of complex ions other than those of the oxygen acids are the deep blue cupric ammonia complex ion, Cu(NH3)4++, which is formed by adding ammonium hydroxide... 

Cupric i-urlHiiiHU, basic, C u( () , C u(()H)j. Mol. wt. 221,11. Suppliers B, H, MC B. The reagent is prepared by adding an equivalent amount of a solution of sodium carbonate to a solution of cupric sulfate and washing the precipitate until nearly free from sulfate ion. The wet basic cupric carbonate is used without drying or weighing. In the presence of ammonium hydroxide it effects the oxidation ... 

Cupric sulfate, anhydrous, CuS04 [1, 165, before Cuprous ammonium bromide]. Mol. wt. 159.60. Suppliers B, F. Fl MCB. 

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