Calcium Cobalt

Soaps of other metals such as aluminium, calcium, cobalt, lithium, lead or zinc - see metallic soaps. European production 1976 toilet soap 307 000 tonnes, household soaps c. 140000 tonnes, soap powders c. 35000 tonnes. 

Data include production of calcium, cobalt, lead, manganese, iron, copper, and other salts, d. ... 

Gregor, H. P., Luttinger, L. B. Loebl, E. M. (1955b). Metal-polyelectrolyte complexes. IV. Complexes of polyacrylic acid with magnesium, calcium, cobalt and zinc. Journal of Physical Chemistry, 59, 990-1. 

Finely divided metals (without oxide film) Aluminum, calcium, cobalt, iron, magnesium, manganese, palladium, platinum, titanium, tin, zinc, zirconium... 

Substances that catch Are spontaneously in air without an ignition source are called pyrophoric. These include phosphoms, the alkali metals and powdered forms of magnesium, calcium, cobalt, manganese, iron, zirconium, and aluminum—all of which may occur at one time or another at a refinery site. Moisture in air is often a factor in spontaneous ignition. 

Several chlorofluoropyridines have been fluorinated7 over a mixture of cobalt(III) fluoride and calcium fluoride [it is an open question whether this is just dilute cobalt(III) fluoride or a mixed calcium cobalt fluoride]. The products are mixtures of chlorofluoroazacyclohexenes and -dienes and open-chain 2-azahex-2-enes (compounds 3-6). This is similar to the nonchlorinated pyridines except that 1-methylpyrrolidines are missing. 

Analysis of a round of. 38 Special caliber, Smith Wesson Nyclad ammunition revealed that the cartridge case and primer cup are nickel-plated brass, no inorganic additives to the propellant were detected, the primer composition contains lead, antimony, and barium, the bullet core is antimony-hardened lead, and the bullet jacket contains traces of calcium, cobalt, titanium, and phosphorus. 

For the reaction of TDI with a polyether triol, bismuth or lead compounds can also be used. However, tin catalysts are preferred mainly because of their slight odor and the low amounts required to achieve high reaction rates. Carboxylic acid salts of calcium, cobalt, lead, manganese, zinc, and zirconium are employed as cocatalysts with tertiary amines, tin compounds, and tin—amine combinations. Carboxylic acid salts reduce cure time of rigid foam products. Organic mercury compounds are used in cast elastomers and in RIM systems to extend cream time, ie, the time between mixing of all ingredients and the onset of creamy appearance. 

Hungarian studies have shown that the pericarp has 16-17% protein and the seeds contain 18% protein. When the microelements were investigated it was found that iron was present in the largest concentration, followed by bromide and manganese. Other microelements found were cadmium, calcium, cobalt, copper, magnesium, phosphorus, potassium, sodium and zinc. Fruits of the Capsicum species have a relatively low volatile oil ranging from about 0.1 to 2.6% in paprika. The characteristic aroma and flavour of fresh fruit is imparted by the volatile oil (Pruthi, 2003). The comparative chemical composition of chilli and paprika is given in Table 14.2. 

Many paints require vigorous pre-treatment before the matrix can be destroyed. Even after considerable oxidation it may be necessary to filter off titanium dioxide. Some paints are, however, more amenable to acid dissolution. Eider [147] reported that it was possible to determine barium, cadmium, calcium, cobalt, lead, magnesium, manganese, mercury, tin, zinc and zirconium in vinyl additives and paint (1 g) by dissolution in hot concentrated nitric acid (10 ml). The mixture was filtered and made up to 100 ml. Liquid samples were again dissolved in MIBK (lg in 100 ml). Air/ acetylene and nitrous oxide/acetylene flames were used to complete the analysis as appropriate. Porter [148] reported losses of lead during the dry ashing of alkyd and latex paints and therefore recommended dissolution in either nitric/perchloric acids or nitric acid alone. 

A patent (726) has described the preparation of 2methyl-pyrazine by reaction with ammonia and air at 350° over a catalyst containing vanadium pentoxide and potassium sulfate a series of cyanomethylpyrazines has been prepared from the corresponding methylpyrazines by reaction with sodium amide in liquid ammonia followed by Af-methyl-A -phenylcyanamide in dioxane (644). 2-Hydroxyiminomethylpyrazine has been prepared from 2-methylpyrazine, sodium amide, and liquid ammonia with butyl nitrite (727, 728), and 2-hydroxy-iminomethyl-3,6-dimethyI-5-pentylpyrazine similarly from 2,3,5-trimethyl-6-pentylpyrazine (648). Nitrones (28) have been prepared from 23-and 2,5-dimethyl-and tetramethylpyrazine through the substituted methylpyridinium (perchlorates) (27) by reaction with p-nitroso-A, fV-dimethylaniline (729). Dehydrogenation of ethylpyrazine at 600° over a calcium cobaltous phosphate catalyst gives 2-vinyl-pyrazine (658). 

In commercial practice, all PET is made using an antimony compound for the final polycondensation stage. The transesterification reaction between DMT and the glycol is catalysed by salts of manganese, zinc, calcium, cobalt, or other metals. At the end of the ester-interchange stage, when essentially all of the methanol has been evolved, the transesterification catalyst is converted to a catalytically inactive and substantially colourless form by reaction with a phosphorus compound such as triphenyl phosphate or phosphite. Polyesters of 1,4-cyclo-hexanedimethanol and DMT or TA are made using complex titanium catalysts. 

Which of the following elements have two electrons in their electron-dot stmctures hydrogen, helium, lithium, aluminum, calcium, cobalt, bromine, krypton, and barium ... 

No interaction was evident with calcium, cobalt, magnesium or nickel. Interaction with zinc was reported,but not studied. 

Heavy-metal soaps (loosely called metallic soaps) are those formed by metals heavier than sodium (aluminum, calcium, cobalt, lead, and zinc). These soaps are not water soluble specific types are used in lubricating greases, gel thickeners, and in paints as driers and flatting agents. Napalm is an aluminum soap. See saponification detergent. 

Metals conmion in enzymes include calcium, cobalt (B12), copper, iron, magnesium, manganese, molybdenum, nickel, potassium, sodium, tungsten, and zinc. Nonmetals in enzymes, hormones, and other proteins include sulfur (as part of three common amino acids) and phosphate in phosphoproteins, nucleic acids, and proteins called hormonal second messengers. ... 

F27. Fraenkel, H. H., and Peters, R. L., A modified calcium-cobalt method for the demonstration of alkaline phosphatase. The use of para-nitrophenyl phosphate as a substrate. Am. J. Clin. Paihol. 42, 324-327 (1964). 

Troymax Drier. ITroy] Calcium, cobalt iron, lead, manganese, zinc, ot zirconium driers for coatings, inte, polyesters. 

Bollard and Butler (1966) in their discussion of functional elements include several others in addition to the above four. They state that fluorine, iodine, and selenium fall in this class for in some plant species they are metabolized, forming definite organic compounds. Bromine, rubidium, and strontium are also placed in this class because they exert a sparing effect on the utilization of chloride, potassium and calcium. Cobalt may perform that same function. They state further that our knowledge of the beneficial effects produced by aluminum, beryllium, and barium are not as yet adequate to justify including these in the group of functional elements. Further research will probably add other elements to this group. 

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