Calcium acetate citrate

Fig. 4.1.8 Influence of various calcium chelators on the relationship between Ca2 " concentration and the luminescence intensity of aequorin, at 23-25°C (panel A) in low-ionic strength buffers (I < 0.005) and (panel B) with 150 mM KC1 added. Buffer solutions (3 ml) of various Ca2+ concentrations, pH 7.05, made with or without a calcium buffer was added to 2 pi of 10 pM aequorin solution containing 10 pM EDTA. The calcium buffer was composed of the free form of a chelator (1 or 2mM) and various concentrations of the Ca2+-chelator (1 1) complex to set the Ca2+ concentrations (the concentration of free chelator was constant at all Ca2+ concentrations). The curves shown are obtained with 1 mM MOPS (A), 1 mM gly-cylglycine ( + ), 1 mM citrate (o), 1 mM EDTA plus 2mM MOPS ( ), 1 mM EGTA plus 2 mM MOPS ( ), 2 mM NTA plus 2 mM MOPS (V), and 2 mM ADA plus 2 mM MOPS (A). In the chelator-free buffers, MOPS and glycylglycine, Ca2+ concentrations were set by the concentration of calcium acetate. Reproduced with permission, from Shimomura and Shimomura, 1984. the Biochemical Society.

Pharmacologic therapy with sodium bicarbonate or citrate/citric acid preparations maybe needed in patients with stage 3 CKD or higher to replenish body stores of bicarbonate. Calcium carbonate and calcium acetate, used to bind phosphorus in sHPT, also aid in increasing serum bicarbonate levels, in conjunction with other agents. 

Percentage elemental calcium content of various calcium salts calcium acetate (25%), calcium carbonate (40%), calcium chloride (27,2%), calcium citrate (21%), calcium glubionate (6,5%), calcium gluceptate (8,2%), calcium gluconate (9,3%), calcium lactate (13%), tricalcium phosphate (39%),... 

For current densities at or above 0.2mA/cm, the sensation associated with transdermal iontophoresis is determined by the type of ion being delivered into the skin. When human subjects compared the sensation experienced during iontophoresis of different salt solutions applied to the right and left forearms, delivery of calcium caused less sensation than delivery of phosphate, magnesium, and zinc, which caused less sensation than delivery of chloride, acetate, citrate, and sulfate, which in turn caused less sensation than delivery of lithium, potassium, and sodium. In general, multivalent ions were found to cause less sensation than monovalent ions. ... 

Tall oil rosin calcium salts Calcium hydroxide calcium soap lubricant additive Calcium acetate calcium source, animal feed Calcium hypophosphite calcium source, beverages Calcium citrate Calcium gluconate calcium source, calcium deficiency Calcium glubionate... 

Cellulose acetate propionate Mineral oil coatings, food-contact Ammonium citrate dibasic Calcium acetate Calcium ethyl acetoacetate Calcium glycerophosphate Calcium phosphate dibasic... 

The reagents mentioned above are ( ) Diammonium citrate. Dissolve 29 g of citric acid in about 200 ml of water, carefully neutralise to methyl red with ammonia, add 14 5 g of citric acid and make up to 1 litre with water, (b) Ammonium Z-tartrate. Dissolve 3 2 g of the salt, entirely free from J-tartrate, in water, add 1 ml of formalin as a preservative (or preferably make up as required) and dilute to 200 ml. (c) Calcium acetate. Dissolve 16 g of calcium carbonate in a dilution of 120 ml of glacial acetic acid, make up to 1 litre and filter, (d) Hydrochloric acid, 34 ml of concentrated acid per litre, (e) Calcium and sodium acetate. Dissolve 5 g of calcium carbonate in 20 g of acetic acid and sufficient water, add 100 g of sodium acetate, make up to 1 litre and filter. 

Administer just before or with a meal to maximize effects ° Calcium salts (acetate, carbonate, and citrate)... 

Stability constants for calcium complexes of a selection of hydroxycarboxylate ligands are listed in Table VII (239,246,272-274). For tartrate, malate, and citrate stabilities decrease in the expected order Ca2+> Ba2+> Ra2+ (231,275). The stability constant for the complex of pyruvate (logiOifi 0.8 (273)) is similar to that for acetate calcium complexes of a-ketoglutarate and of oxaloacetate are somewhat more stable (logio-Ki = 1.3, 1.6 respectively (273)). The sequence logio-Ki = 3.0, 1.4, 1.1, 0.6 for the dicarboxylate ligands oxalate, malonate, succinate,... 

Avoidance of interference of other milk constituents with measurements is also of importance for example, dissociation of casein micelles by calcium-chelating agents, such as trisodium citrate or ethylenediamine tetra-acetic acid (EDTA), may used to avoid interference of the micelles in particle size measurement, while clusters of fat globules can be disrupted by adding a low level of sodium dodecyl sulphate (SDS). 

Formation of aniline blue test Upon heating insoluble oxalates with concentrated phosphoric acid and diphenylamine or upon heating together oxalic acid and diphenylamine, the dyestuff aniline blue (or diphenylamine blue) is formed. Formates, acetates, tartrates, citrates, succinates, benzoates, and salts of other organic acids do not react under these experimental conditions. In the presence of other anions which are precipitated by calcium chloride solution, e.g. tartrate, sulphate, sulphite, phosphate, and fluoride, it is best to heat the precipitate formed by calcium chloride with phosphoric acid as detailed below. 

Fig. 12.4. Scanning electron micrograph showing calcium carbonate crystals found (A) associated with a Xanthobacter autotrophicus culture on an acetate-rich medium, (B) on the same medium with Ralstonia eutropha, (C) with the same bacterium on a citrate-rich medium and (D) on the same medium with Xanthobacter autotrophicus.

A classic example of a solid—fluid ceramic powder synthesis reaction is that of calcination and dehydration of natural or synthetic raw materials. Calcination reactions are common for the production of many oxides from carbonates, hydrates, sulfates, nitrates, acetates, oxalates, citrates, and so forth. In general, the reactions produce an oxide and a volatile gaseous reaction product, such as CO2, SOg, or HgO. The most extensively studied reactions of this type are the decompositions of magnesium hydroxide, magnesium carbonate, and calcium carbonate. Depending on the particular conditions of time, temperature, ambient pressure of CO2, relative humidity, particle size, and so on, the process may be controlled by a surface reaction, gas diffusion to the reacting... 

The dialyzed enzyme solution was now subjected to a repetition of the preceding procedures admixture of suflBcient calcium phosphate gel to adsorb protein but leave the enzyme in solution centrifugation and addition of more gel to the supernatant to adsorb the enzyme elution of the enzyme from the gel with a mixture of 0.15 M acetate and 0.015 M citrate at pH 4.5 addition of solid ammonium sulfate to the eluate to 55% saturation and precipitation of the enzyme. At this stage, the purifications ranged from 650- to 1100-fold with a recovery of approximately 20-30% of the activity present in the crude red cell hemolysate. Solution of this precipitate, dialysis treatment with solid ammonium sulfate and collection of the precipitate appearing between 40 and 55% saturation yielded a preparation that represented a 1500-fold purification. The preparations were stable when left sedimented in the ammonium sulfate solution. 

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