Copper sulfate basic

Zinc coposil, citrusperse Basic copper sulfate + basic zinc sulfate or ZnO —... 

The process operated by ACl is outlined in Figure 7. Bales of cotton linter are opened, cooked in dilute caustic soda, and bleached with sodium hypochlorite. The resulting highly purified ceUulose is mixed with pre-precipitated basic copper sulfate in the dissolver, and 24—28% ammonium hydroxide cooled to below 20°C is added. The mixture is agitated until dissolution is complete. If necessary, air is introduced to aUow oxidative depolymerization and hence a lowering of the dope viscosity. 

Methyl violet [8004-87-3] Cl Basic Violet 1 (17), is made by the air oxidation of dimethyl aniline in the presence of salt, phenol, and a copper sulfate catalyst. Initially, some of the dimethyl aniline is oxidized to formaldehyde and /V-methyl aniline under those conditions. The formaldehyde then reacts with dimethyl aniline to produce N,N,]S7,1S7-tetramethyldiaminodiphenylmethane, which is oxidized to Michler s hydrol [119-58-4]. The hydrol condenses with... 

There are four basic sulfates that can be identified by potentiometric titration using sodium carbonate (39,40) langite [1318-78-17, CuSO -3Cu(OH)2 H2 i brochantite [12068-81 -4] CuSO -3Cu(OH)2 antedite [12019-54-4] CuSO -2Cu(OH)2 and CuS0 -Cu0-2Cu(0H)2-xH20. The basic copper(II) sulfate that is available commercially is known as the tribasic copper sulfate [12068-81 ] CuS04-3Cu(0H)2, which occurs as the green monoclinic mineral brochantite. This material is essentially insoluble in water, but dissolves readily in cold dilute mineral acids, warm acetic acid, and ammonia solutions. 

Tribasic coppersulfate is usually prepared by reaction of sodium carbonate and copper sulfate. As the temperature of the reaction contents increases so does the size of the resulting particle. For use as a crop fungicide, intermediate (40—60°C) temperatures are used to obtain a fine particle. When lower temperatures are used to precipitate basic copper(II) sulfate, products high in sulfate and water of hydration are obtained. 

A basic electrochemical cell is depicted in Figure 9.3 and is made of a copper wire in one container with a solution of copper sulfate and a zinc rod in a different container with a zinc sulfate solution. There is a salt bridge containing a stationary saturated KC1 solution between the two containers. Electrons flow freely in the salt bridge in order to maintain electrical neutrality. A wire is connected to each rod and then to a measuring device such as a voltmeter to complete the cell. 

Electroless Deposition of Copper. The basic ideas of the mixed-potential theory were tested by Paunovic (10) for the case of electroless copper deposition from a cupric sulfate solution containing ethylenediaminetetraacetic acid (EDTA) as a complexing agent and formaldehyde (HCHO) as the reducing agent (Red). The test involved a comparison between direct experimental values for and the rate of deposition with those derived theoretically from the current-potential curves for partial reactions on the basis of the mixed-potential theory. 

Basic copper sulfate, copper oxychloride sulfate and derivations of these products are used to control mildews, rots, blight and leafspots on many crops. These can be effective but may also damage plants. 

Basic carbonate is obtained from its naturally occurring minerals. It also may be prepared by mixing a solution of copper sulfate with sodium carbonate. The precipitate is then filtered and dried. 

Basic copper sulfate salts are used as fungicides for plants. 

Copper oxide (CuO), basic copper carbonate - CuCO 3 C u(OH) 2, and copper sulfate - available commercially as CuS0 5H2O - are... 

One of the earliest references to a reaction in solution, which, as we now realize, depends upon the formation of a coordination compound, was recorded by Pliny who stated that the adulteration of copper sulfate by iron sulfate could be detected by testing with a strip of papyrus soaked in gall-nuts, when a black colour developed if iron were present. A. Libavius (1540-1616) noted how ammmonia present in water could be detected by the blue colour formed with a copper salt and A. Jacquelain (1846) actually determined copper salts in terms of the blue colour formed on adding ammonia. Later developments used coordination compounds formed from ethylenediamine and other polyamines.3 T. J. Herapath determined iron(III) as its red isothiocyanate complex in 1852 and the basic procedure is used today.3... 

BROCHANTITE. A mineral composed of basic copper sulfate corresponding to the formula Cut (S04)(OH)/, crystallizing in the monoclinic system in needle-like prisms, or forming druses or masses. Hardness, 3.5-4 specific gravity, 3.9 vitreous luster color, green streak, green transparent to translucent. 

Mention has already been made of the uciion of oxygen and oxidants on metal. It should be noted that metals react with sulfides, such as hydrogen sulfide, and are subsequently subject to additional slow attack by oxygen and oxidants. Thus, copper reacts to form sulfide and then the basic copper sulfate. 

About 100 fungicides me required for these various uses in the United States. The principal ones are sulfur, liine-sulfur (polysulfides of calcium) copper sulfate (or ils equivalent in the oxides, basic sulfates, oxychloride and other relatively insnluhle copper compounds) creosote products and zinc chloride, both used as wood preservatives and a wide variety of organic compounds. Among the latter are several dithiocarbamates. such as ferbam and zineb, and other thio compounds, like N-(trichloronielhyllhio>-phthalimide (folpel) cis-NfI Irtchloroniclhy] Jthio)-4-cyclohexane- 1.2-dicaiboxyimide (captan) and 8-hydroxyquinoline. 

The dehalogenation of naphthyridines with hydrogen over palladium on calcium carbonate in a weakly basic alcoholic solution gives excellent yields (90-95%) of reduced compounds.38,45,134,137,138 This method for removal of halogens has been extensively used and generally surpasses the classic hydrazine-copper sulfate reduction method. 

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