Copper tartrate

Interaction Between Partial Reactions. The original mixed-p)otential theory assumes that the two partial reactions are independent of each other (1). In some cases this is a valid assumption, as was shown earlier in this chapter. However, it was shown later that the partial reactions are not always independent of each other. For example, Schoenberg (13) has shown that the methylene glycol anion (the formaldehyde in an alkaline solution), the reducing agent in electroless copper deposition, enters the first coordination sphere of the copper tartrate complex and thus influences the rate of the cathodic partial reaction. Ohno and Haruyama (37) showed the presence of interference in partial reactions for electroless deposition of Cu, Co, and Ni in terms of current-potential curves. 

Sachtler s group (73) and Yasumori (64) studied the IR spectra of silica-supported Ni modified with amino acid and 2-hydroxy acid and the XPS of TA-MRNi. Both authors deduced almost the same model as proposed by Suetaka. Recently Sachtler s group proposed other models as shown in Fig. 22 from results obtained in enantio-differentiating hydrogenations of MAA with nickel catalysts modified with nickel and copper tartrates (74). The nickel tartrate adsorbs at the vacant coordination site of nickel in this model. 

Additional Exercises Crystals of silver sulfate, silver chromate, calcium tartrate, and copper tartrate. 

Contrasting with the aforementioned assessments, the SC can be studied after staining the harvested SACD. Many dyes are available and their choice depends on the goal of the study. As an example, a mixture of rhodamine B and methylene blue conveniently decorates the corneocytes for microscopic examination. Another quantitative assay is based on the Lowry s reaction of proteins with an alkaline copper tartrate solution and Folin reagent followed by spectrophotometric measurement of the reaction product with maximum absorbance at 750 nm 59... 

Protein + copper tartrate — — colored complex Schematic structure of the slide ... 

The earlier alkaline copper tartrate reagents required the addition of potassium iodide to prevent their slow autoreduction. However, if the constituents are of analytical quality, tartrate-biuret reagents are stable indefinitely, and potassium iodide can safely be omitted. 

When glucose is analyzed by being oxidized (e.g., with alkaline copper tartrate see below), high results are obtained if the above filtrates are used. A PFF prepared with barium hydroxide and zinc sulfate removes most interfering nonglucose-reducing substances (see Experiment 35). This provides essentially a. neutral PFF because the Zn(OH)2 product is precipitated ... 

Protein, total s Spectrophotometry Biuret reagent (alkaline copper tartrate) forms complex with proteins measure absorbance at 550 inn after 30 min... 

COPPER TARTRATE (815-82-7) Contact C4H4CUOS with acetylene forms unstable and explosive acetylides. Contact with nitromethane forms explosive compounds. Aqueous solution is acidic. Incompatible with bases, amines, amides, and inorganic hydroxides. 

The British Pharmacopoeia, 1948 revision, includes standards for total ash, acid-insoluble ash, and starch and foreign organic matter. It requires certain identification tests— for instance, that no pink color is produced when tragacanth is treated with ruthenium red and that the characteristic copper reduction of alkaline copper tartrate solutions is produced to indicate the sugar character of the gum. 

Cotton constructed an apparatus to measure optical rotations and CD over a range of wavelengths. He established Cotton effects for potassium chromium tartrate and potassium copper tartrate solutions. These were the first ORD and CD studies of coordination compounds, but the complexes were not isolated. For a long period there was little activity in ORD or CD studies of complexes. Kuhn (13) was interested in metal complexes in connection with his ideas about the theory of optical activity (14), J. P. Mathieu (15,16) presented combined studies of ORD, CD, and absorption spectra of many complexes of Co, Cr, Pt, Rh, and Ir during the 1930s. After his work there was no activity in CD studies of complexes for many years. 

Chromatex group Copper arsenite group Atacamite Barium chro-mate(VI) Baryte Bismuth chromate Copper tartrate Lead chromate Acetate green Bremen blue Chrome yellow Green cinnabar Green verditer Prussian blue... 

Copper acetate group Copper formate group Copper tartrate Merrifield (1849) 664 Scott (2002) 287-288... 

Described in late eighteenth century sources as a combination of copper and tartar ( cuprous tartar - copper tartrate A Practical Treatise (1795), de Massoul (1797)), then as copper and arsenic (Merimee, 1830), finally a mixture of lead chromate and Prussian blue (Salter, 1869) the latter stated that Prussian blue would he destroyed by lead chromate and was better compounded... 

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