Carbon basicity basicities

Formula Co5(OH)6(C03)2 or 2CoC03 3Co(OH)2 H20 MW 516.73 Synonyms cobalt carbonate hydroxide cobaltous carbonate basic basic cobalt carbonate... 

Hafnium Carbonate. Basic hafnium carbonate [124563-80-0], Hf2(0H)4C02 XH20, is prepared as a wet paste by reaction of a slurry of basic hafnium sulfate [139290-14-5], Hf 02(S0 2 XH20, and sodium carbonate, then filtering. The basic carbonate has a short shelf life and is preferably prepared as needed. It is a starting material for the preparation of various hafnium carboxylates. 

Basic Lead Carbonate. Basic lead carbonate [1319-46-6] (white lead), 2PbC03 Pb(OH)2, mol wt 775.67, d = 6.14g/cm, forms white... 

Mercuric Carbonate. Basic mercuric carbonate/7ti5 ti7-7< -7/, HgCO 3HgO, maybe prepared by the addition of sodium carbonate to a solution of mercuric chloride. The brown precipitate, which lacks usefulness, is generally not isolated rather, the slurry is refluxed, whereupon the carbonate decomposes to red mercuric oxide. 

Carbonates. Basic zirconium carbonate [37356-18-6] is produced in a two-step process in which zirconium is precipitated as a basic sulfate from an oxychloride solution. The carbonate is formed by an exchange reaction between a water slurry of basic zirconium sulfate and sodium carbonate or ammonium carbonate at 80°C (203). The particulate product is easily filtered. Freshly precipitated zirconium hydroxide, dispersed in water under carbon dioxide in a pressure vessel at ca 200—300 kPa (2—3 atm), absorbs carbon dioxide to form the basic zirconium carbonate (204). Washed free of other anions, it can be dissolved in organic acids such as lactic, acetic, citric, oxaUc, and tartaric to form zirconium oxy salts of these acids. 

The mauve colored cobalt(II) carbonate [7542-09-8] of commerce is a basic material of indeterminate stoichiometry, (CoCO ) ( (0 )2) H20, that contains 45—47% cobalt. It is prepared by adding a hot solution of cobalt salts to a hot sodium carbonate or sodium bicarbonate solution. Precipitation from cold solutions gives a light blue unstable product. Dissolution of cobalt metal in ammonium carbonate solution followed by thermal decomposition of the solution gives a relatively dense carbonate. Basic cobalt carbonate is virtually insoluble in water, but dissolves in acids and ammonia solutions. It is used in the preparation of pigments and as a starting material in the preparation of cobalt compounds. 

Ester hydrolysis in base is called saponification, which means soap making. Over 2000 years ago, the Phoenicians made soap by heating animal fat with wood ashes. Animal fat is rich in glycerol triesters, and wood ashes are a source of potassium carbonate. Basic hydrolysis of the fats produced a mixture of long-chain carboxylic acids as their potassium salts. 

The pyrylium cation possesses, according to the substituents in positions 2, 4, and 6, a more or less pronounced electrophilic reactivity which enables it to add nucleophiles in these positions. According to the nucleophilic reactivity and the carbon basicity " of the anions, an ion pair (a substituted pyrylium cation and an anion halide, perchlorate, sulfate, fluoroborate, chloroferrate, etc.), or a covalently bonded 2H- or 4//-pyran may be formed. With the more basic anions... 

Basic pigments Typical pigments in this class are basic lead carbonate, basic lead sulphate, red lead and zinc oxide. 

CobaltCII) carbonate (basic), uses, 7 239t Cobalt chloride analysis, 7 237t... 

Problem solution You document the carbon basicity differences and submit the report to your report and the technical director. 

Synonyms bismuth subcarbonate bismuth carbonate, basic bismuth basic... 

The cobalt carbonate basic salt is the commercially-used cobalt carbonate. It is used primarily for manufacturing cobalt pigments. It also is used to prepare cobalt(II) oxide and other cobalt salts. 

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