Cupric chloride dihydrate

The CASS Test. In the copper-accelerated acetic acid salt spray (CASS) test (42), the positioning of the test surface is restricted to 15 2°, and the salt fog corrosivity is increased by increasing temperature and acidity, pH about 3.2, along with the addition of cupric chloride dihydrate. The CASS test is used extensively by the U.S. automobile industry for decorative nickel—chromium deposits, but is not common for other deposits or industries. Exposure cycle requirements are usually 22 hours, rarely more than 44 hours. Another corrosion test, now decreasing in use, for decorative nickel—chromium finishes is the Corrodkote test (43). This test utilizes a specific corrosive paste combined with a warm humidity cabinet test. Test cycles are usually 20 hours. 

After the addition had been completed, the acidic solution containing p-acetylphenyldiazo-nium chloride formed in the above reaction was added dropwise with stirring to a mixture of 530 ml of glacial acetic acid and 530 ml of benzene which had been previously cooled, and the cooled solution saturated with sulfur dioxide and to which had been added 34 g of cupric chloride dihydrate. After the addition had been completed, the reaction mixture was stirred at about 40°C for three hours, and was then poured into 3,000 ml of an ice-water mixture. 

A similar method can be used for the addition of carbon tetrachloride to nonpolymerizable olefins (e.g., 1-octene, 2-octene, 1-butene, 2-butene) pure adducts are obtained in yields of over 90% if the components are allowed to react at 100° for 6 hours. Adducts of carbon tetrachloride with vinylic monomers (styrene, butadiene, acrylonitrile, methyl acrylate, etc.) can be prepared in good yields by substituting cupric chloride dihydrate in acetonitrile for ferric chloride hexahydrate and benzoin. 

A solution of 2 gm (0.014 mole) of 3-nitroaniline in 40 ml of glacial acetic acid and 1.85 gm (0.028 mole) of peracetic acid is treated with 1 ml of an aqueous solution containing 5 mg of cupric chloride dihydrate. The reaction mixture is stirred for 16 hr at 17°C. After this time, the precipitated product is filtered off (0.8 gm). The mother liquor is added to 200 ml of a 3N sodium hydroxide solution, whereupon another 0.61 gm of product is precipitated. The crude products are combined yield 1.42 gm (72%), m.p. 140°-144°C. On recrystallization the melting point is raised to 144°-147°C. 

Cumyl Hydroperoxide Cupric Acetate Monohydrate Cupric Arsenite Cupric Bromide, Anhydrous Cupric Chloride Dihydrate Cupric Fluoborate Solution Cupric Green Cupricin... 

COPPER CHLORIDE Cupric Chloride Dihydrate, Eriocholdte (anhydrous) ORM - B, III 0 0 0... 

The planar configuration of quadricovalent copper(Il) was discovered by Cox and Webster21 in the compounds of copper with 0-dike-tones (copper disalicyl ldoxime, copper acetylacetonate, copper ben-zoylacetonate, the copper salt of dipropionylmethane) and by Tunell, Posnjak, and Ksanda22 in the mineral tenorite, CuO. In crystalline cupric chloride dihydrate (Fig. 5-9) there are molecules with the planar configuration23... 

Consider the case of cupric chloride. Under many circumstances of a general nature, such as reactions using solutions of the compound, the name cupric chloride or, better still, copper dichloride suffices. If referring especially to the hydrated solid salt, either cupric chloride dihydrate or copper dichloride dihydrate is used. The full structure of the crystalline hydrated chloride is known, and if matters involving this structure were being dealt with, then the full name should be given as frans-copper dichloride dihydrate H20 Cl... 

Fig. 12.13. Plan of the unit cell of the orthorhombic structure of cupric chloride dihydrate, CuC12.2H20, projected on a plane perpendicular to the z axis. The heights of the atoms are indicated in fractions of the c translation and hydrogen bonds are represented by broken lines. The corners of the unit cell coincide with the copper atoms at height o.

CUPRIC CHLORIDE DIHYDRATE (7447-39-4) Forms shock-sensitive mixture with potassium or sodium. Decomposes in the presence of 4-chloro-o-toluidine at elevated temperatures above 445°F/229°C. Incompatible with acetylene, hydrazinium diperchlorate, acids, acid fumes. 

CALORIMETER FOR HEAT CAPACITY MEASUREMENTS FROM 2 TO 80 DEGREES K. HEAT CAPACITIES OF BENZOIC ACID AND CUPRIC CHLORIDE DIHYDRATE. 

Atomized 5 % sodium chloride, pH 3.2 with acetic acid, 0.025 % cupric chloride-dihydrate, 35°C. Galvanic coupling due to copper salt reduction to copper metal. More severe than ASTM B 117. 

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