Copper, tris sulfate

If you are trying to show only the presence of a protein, a quick test to carry out is known as the Biuret test. A mixture of dilute sodium hydroxide and 1% copper( ii ) sulfate solution is shaken with a sample of the material under test. If a protein is present, a purple colour appears after about three minutes (Figure 15.25). 

Dinitro-p-diphenyl carbizide Arsenic (III), As+3 Silver nitrate Copper (II) sulfate Potassium tri-iodide (Kl + l2)... 

EPOXIDES Alumina. Bisfbenzonltrile)-dichloropalladium(H). Copper(II) sulfate-Pyridine. Diborane. Diphenyl d isu Ifide-Tri-n-bu t y Iphosphine. Organo-cuprates. Sodium cyanoborohydride. Sodium phenyl selenide. Trimethyl-sllyl phenyl sclcnidc. Trimethylsilyl trifluoromethanesulfonate. Triphenyl-phospliine-Thiocyanogen. 

Copper, tris(ethylene glycol-sulfate structure, 66... 

C6H24CuN60flS, Tris(1,2-diaminoethane)copper(II) sulfate (triclinic-low temperature), 45B, 1017... 

C6H2ftCuN60ijS, Tris( 1, 2-diaminoethane)copper (II) sulfate (trigonal),... 

CgH22C0N15O2, Tris(biguanide)cobalt(III) dihydrate, 44B, 907 CgH22CuN40sS, Bis-(1,3-propanediamine)copper(II) sulfate monohydrate, 35B, 681... 

C5H15CI2C0O2.5, Cobalt chloride methanol, 43B, 1351 CgHi2CUN2O4, Bis(propane-2-nitronato)copper(II), 39B, 761 CgHi2CuOioS, Tris(1,2-ethanediol)copper(II) sulfate, 38B, 949 C6Hi20sW, Tris(ethylene-1,2-dioxo)tungsten(VI), 40B, 932 CgHi4BrCuNO, (2-Diethylaminoethanolato)copper(II) bromide, 37B, 561... 

Copper sulfate is used to control protozoan fish ectoparasites including Ichthyopthirius, Tri-chodina, and Costia. The effectiveness of the treatment diminishes with increasing total alkalinity and total hardness of the water (Straus and Tucker 1993). Copper compounds now used to control protozoan parasites of cultured red drum (Sciaenops ocellatus) include copper sulfate, copper sulfate plus citric acid, and chelated copper compounds (forms of copper bound by sequestering agents, such as ethanolamine) chelated copper compounds are considered less toxic to fish than copper sulfate and at least as effective in controlling parasites (Peppard etal. 1991). 

Although silver is not treated by solvent extraction in any of the flow sheets, silver is recovered from aqueous solution in several other situations. For these processes, Cytec developed reagents with donor sulfur atoms to extract this soft element. For example, tri-isobutylphosphine sulfide (CYANEX 47IX) extracts silver from chloride, nitrate, or sulfate media selectively from copper, lead, and zinc [32]. The silver is recovered from the loaded organic phase by stripping with sodium thiosulfate, and the metal recovered by cementation or electrolysis. Silver can also be extracted from chloride solution by a dithiophosphinic acid (CYANEX 301) [33]. 

The [Cr(en)3]2+ and [Cr(pn)3]2+ salts have reflectance spectra (Table 11) resembling those of the hexaammines, and the six N donor atoms are assumed to complete tetragonally distorted octahedra around the metal. Stability constant measurements (Table 39) have shown that the ions [Cr(en)(aq)]2+ (vmax= 18 300 cm-1, e = 25 dm3 mol-1 cm-1) and [Cr(en)2(aq)]2+ (vma = 17 500 cm-1, e = 17 dm3 mol-1 cm-1) exist in aqueous solution, but that, as in the copper(II) system, the third ethylenediamine molecule is only weakly bound, and care is needed to prevent loss of en from tris(amine) complexes in the preparations. Several bis(amine) complexes, e.g. [CrBr2(en)2], have been isolated, and these are assigned trans structures because of IR spectral resemblances to the corresponding oopper(II) complexes. Since the spectrum of [Cr(S04)(en)2] also shows the presence of bidentate sulfate, this is assigned a trans octahedral structure with bridging anions. 

Other chemicals tried in the two decades between 1920 and 1940 include sodium or calcium chlorate, mineral oils, rock salt, copper sulfate, creosote, and ammonium thiocyanate. These latter compounds while tried never showed enough promise to be widely used (1,2). 

In 1888 formaldehyde, the first synthetic fungicide appeared. Unless you count chlorophenol mercury in 1913, little really new happened until 1934 when Tisdale and Williams of DuPont revealed the dialkyldithiocarbamates. They were expensive to make, however, and it was depression days, and so DuPont was skittish about trying to sell them to farmers when copper sulfate could be bought for 6 cents a pound. 

The results mentioned above prompted us to synthesize a more simplified catalyst, scandium tris(dodecyl sulfate) (Sc(DS)3) [23,24]. This new type of catalyst, Lewis acid-surfactant-combined catalyst (LASC) , was expected to act both as a Lewis acid to activate the substrate molecules and as a surfactant to form emulsions in water. Eng-berts and co-workers also reported a surfactant-type Lewis acid, copper bis(dodecyl sulfate) (Cu(DS)2) [25]. Although they studied detailed mechanistic aspects of Diels-Alder... 

Tris-(2-imidazolidinethione)copper(I) acetate and sulfate have similarly been obtained by reducing the appropriate copper(II) salt with the ligand in water. They are presumably ionic since solutions of the latter gave an immediate precipitate of BaS04 when treated with BaCl2 249). Tris (0-ethylaminothioformate)copper(l) chloride 101, 299) and bromide 299) have been prepared from the copper(I) salts. 

DBU has been quaternized with chloromethylated polystyrenes to give new ion-exchange resins (84BCJ1108). The chloride forms of these ion-exchange resins were effective as ion exchangers for bulky anions such as sulfate, oxalate, hexacyanoferrate(II) and (III), and tris(oxalato)ferrate(III). The adsorption of mercury(II) and copper(II) chlorides and iodides on these resins was also investigated. 

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