Cupric acetate-phosphoric acid

Catalyst, alumina, 34, 79, 35, 73 ammonium acetate, 31, 25, 27 boron tnfluonde etherate, 38, 26 copper chromite, 31, 32, 36, 12 cupric acetate monohydrate, 38, 14 cuprous oxide silver oxide, 36, 36, 37 ferric nitrate, hydrated, 31, 53 phosphoric acid, 38, 25 piperidine, 31, 35 piperidine acetate, 31, 57 Raney nickel, 36, 21, 38, 22 sulfuric acid, 34, 26 Catechol, 33, 74 Cetylmalonic acid, 34, 16 Cetylmalonic ester, 34,13 Chlorination, by sulfuryl chloride, 33, 45, 37, 8... 

Sulphur dioxide precipitates the chloride from an aqueous solution of cupric sulphate and sodium chloride. After being washed with dilute sulphurous acid, and then glacial acetic acid, the salt can be dried by the aid of heat.4 The reduction of a solution of cupric chloride, with formation of cuprous chloride, can also be-effected by means of phosphorous acid.5... 

Cupric phosphite, CuHP03,2H20.—A phosphite of this formula is obtained by the interaction of solutions of diammonium hydrogen phosphite and cupric chloride, or of phosphorous acid and cupric acetate.6 It is unstable, but admits of drying at a medium temperature. 

Hydrolysis Cupric sulfate. Hydrobromic acid. Ion-exchange resins. Magnesium sulfate. Morpholine. Nitrosyl chloride. Phosphoric-Acetic acid. Polyphosphoric acid. Potassium r-butoxide. Potassium persulfate. Pyruvic acid (by exchange). Rochelle salt. Silver trifluoro-acetate (gem-dihromides). 

The selectivity of the metal sulfate catalyst is influenced by many factors besides its acidic property, such as geometric structure involving a pore structure, arrangement of basic sites, polarity of the surface, etc. For example, the relative values of the first-order rate constants (per imit acidity at pK — 3) of the depolymerization catalyzed by nickel sulfate, cupric sulfate, and silica-alumina were found to be 1100 300 1. The difference may be attributed to the differences in acid-base bi-functional catalysis of these catalysts. This view may be said to have originated in 1948 when Turkevich and Smith (45) showed that the isomerization of 1-butene to 2-butene is catalyzed by metal sulfates, sulfuric acid, phosphoric acid, etc., but little by acetic acid, hydrogen chloride, etc. The high catalytic activity of the catalysts of the former group is considered as due to acid-base bifunctional catalysis as illustrated by Fig. 14. Independently, Horiuti (45a) advanced the same idea... 

Potassium dichromate (5%) in 40% sulphuric acid works in a similar manner to sulphuric acid spray. A 50% solution of sulphuric acid in methanol may require heating at a lower temperature (100°C) for brown-black spots of lipids to appear. A 3%-6% solution of cupric acetate in 8%-10% phosphoric acid turns lipids black when heated at 160°C for 1-2 h. Molybdophosphoric acid (5%) in ethanol is another destructive reagent that turns lipids blue to black when heated at 120°C for 1 h. Coomassie blue (0.03% in 20% methanol) turns lipids to blue spots on a white background. 

A newer reagent is prepared by dissolving 3 g of cupric acetate in 100 ml of an 8% aqueous phosphoric acid solution. Heating is carried out at 130-180°C for up to 30 min. This reagent is suitable for use with some commercial organic-bound layers, which will not react to give a dark background under the stated conditions. 

N7M is the cast equivalent of Hastelloy B2. This nickel-molybdenum alloy has excellent corrosion resistance in all concentrations and temperatures of hydrochloric acid. If ferric or cupric ions are present, however, severe attack will occur. It is also good for sulfuric, acetic, and phosphoric acids. ... 

Benzyl 8-quinolyl hydrogen phosphate heated 5 hrs. at 70° with ethanol and CuClg in anhydrous pyridine benzyl ethyl phosphate. Y 90% as the Ba-salt. F. e., also phosphoric acid monoesters, and sym. diphosphoric acid diesters with cupric acetate, s. K. Nagasawa and H. Yoshidome, Chem. Pharm. Bull. 20, 1840 (1972) s. a. H. Takaku, Y. Shimada, and K. Aral, Bull. Chem. Soc. Japan 47, 779 (1974). 

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