Mineral citric acid

The cream contains fluocinonide 0.5 mg/g in a water-washable aqueous emollient base of cetyl alcohol, citric acid, mineral oil, polysorbate 60, propylene glycol, sorbi-tan monostearate, stearyl alcohol, and water (purified). 

Only acids are sour. Sourness is not identical to chemical acidity or pH, which is a function of the hydrogen ion concentration, but also appears to be a function of the entire acid molecule. A combination of pH and acid concentration determines the actual degree of the sour taste. At the same pH, any organic acid, eg, citric acid, exhibits a far greater sourness than a mineral acid, eg, hydrochloric acid (27,28). 

Medical Uses. Citric acid and citrate salts are used to buffer a wide range of pharmaceuticals at their optimum pH for stabiUty and effectiveness (65—74). Effervescent formulations use citric acid and bicarbonate to provide rapid dissolution of active ingredients and improve palatabiUty. Citrates are used to chelate trace metal ions, preventing degradation of ingredients. Citrates are used to prevent the coagulation of both human and animal blood in plasma and blood fractionation. Calcium and ferric ammonium citrates are used in mineral supplements. 

CITATION , white mineral oils, 43 CITGO Petroleum Coi poration, 223, 254 Citric acid, 43... 

Mylanta Liquid—simethicone, sorbitol Nephrox Liquid—aluminum hydroxide, mineral oil Original Alka-Seltzer Effervescent Tablets—sodium bicarbonate, aspirin, citric acid, phenylalanine Riopan Plus—magaldrate, simethicone, sorbitol, sucrose Riopan Plus Suspension—magaldrate, simethicone, saccharin, sorbitol... 

Complexes of tetravalent zirconium with organic acids, such as citric, tartaric, malic, and lactic acids, and a complex of aluminum and citric acid have been claimed to be active as dispersants. The dispersant is especially useful in dispersing bentonite suspensions [288]. Polymers with amine sulfide terminal moieties are synthesized by using aminethiols as chain transfer agents in aqueous addition polymerizations. The polymers are useful as mineral dispersants [1182]. 

Before the availability of artificial fertilizers in the mid-19th century, farms were traditionally organic, with recycling of animal waste, and perhaps with the application of lime on acid soils. Agricultural chemical analysis may have begun with Carl Wilhelm Scheele (1742-1786), the Swedish pharmacist who isolated citric acid from lemons and gooseberries and malic acid from apples. In France, Nicolas Theodore de Saussure (1767-1845) studied the mineral composition of plant ash, and in Britain, Sir Humphrey Davy... 

Attin, T., Meyer, K., Hellwig, E., BuchaUa, W., and Lennon, A. M. (2003). Effect of mineral supplements to citric acid on enamel erosion. Arch. Oral Biol. 48, 753-759. 

Brookhaven National Laboratory s (BNL s) biochemical recovery of radionuclides and heavy metals is a patented biochemical recovery process for the removal of metals and radionuclides from contaminated minerals, soil, and waste sites. In this process, citric acid, a naturally occurring organic complexing agent, is used to extract metals and radionuclides from solid wastes by the formation of water-soluble, metal-citrate complexes. The complex-rich extract is then subjected to microbiological biodegradation that removes most of the extracted heavy metals. 

Mercury electrodes were also polarized anodically in the solutions containing NaOH, HCIO4, NaCl, Nal, NaF, Na2S04, NaHC03, Na2C03, and tartaric and citric acids [78]. The solutions contained only one species, or the mixture of species, and no supporting electrolyte was added. For many of the above salts, linear caKbra-tion plots were obtained and, therefore, analytical possibiKties were discovered. Anodization of mercury was also carried out in the real samples (wine, rain, tap and mineral water). 

Citric acid and its citrate compounds are widely used in hundreds of applications. Global production of citric acid in 2005 was 1.6 million tons, with China producing approximately 40% of the world supply. In the United States, approximately 65% of citric acid use is in the food and beverage industry. Citric acid is used as an acidulant to impart tartness, to control pH, as a preservative and antioxidant, as a metal chelator, and to stabilize color and taste. Citrate salts can be used as mineral and metal dietary supplement for example, calcium citrate... 

Although about 80—90 percent of the total citric acid in humans are localized in hard tissues as enamel, dentine, cementum and bones, very little is known on the biological function of citric acid in biocalcification. HA crystals are reported to be dissolved by the action of citric acid. The acid dissolves the crystals in such a way that the destruction is a preferential attack along the c-axis. It is highly probable that the HA crystallites present in mineralized tissues also do have a dislocation in the centre of the material 165). Another assumption describes that citric acid is a constituent of the aqueous phase of enamel or that citrate is bound to the surface of apatite by adsorption166). 

Leaver, A. G., Eastoe, J. E., Hartles, R. L. Citrate in mineralized tissues. II. The isolation from human dentine of a complex containing citric acid and a peptide. Arch, oral Biol. 2, 120 (1960)... 

The evidence for the formation of complex heteropoly-acids with tantalic acid is very comparable to that set forth in the case of niobic acid (see p. 165). Solutions of tantalates are readily hydrolysed in aqueous solution by boiling, and even more readily by the addition of mineral acids, acetic acid or succinic acid in the presence, however, of arsenious add, arsenic add, tartaric add or dtric add no precipitation of tantalic add takes place. Again, tincture of galls yields a yellow predpitate with solutions of tantalates which have been rendered feebly acid with sulphuric add this reaction does not, however, take place in the presence of ordinary tartaric add, racemic add or citric acid. Tartaric add also prevents the formation of the predpitates which are thrown down on the addition of potassium ferrocyanide or potassium ferricyanide to faintly acid solutions of tantalates, and hinders the precipitation of tantalic add from solutions in inorganic acids by the action of ammonia. In all these cases it is assumed that complex acids or their salts are produced, in consequence of which the usual reaction does not take place. 

When necessary, the acidity of a wine is augmented by addition of tartaric or citric acid, and mineral acids, especially sulphuric acid, are sometimes used. 

The pH of honey ranges between 3.4 and 6.1 with an average of 3.9 (Iurlina and Fritz, 2005). However, the pH is not directly related to acidity, due to the buffering action of acids and minerals found in honey (de Rodriguez et ah, 2004). Its acidity is due to the presence of organic acids, particularly gluconic acid, pyruvic acid, malic acid, and citric acid. These are in equilibrium with lactones or esters, as well as to inorganic ions, such as, phosphate or chloride (Anklam, 1998). 

Starch Amy lose Amylopectin Proteins Organic acids Citric acid Malic acid Succinic acid Fumaric acid Minerals... 

Citric acid, 1 part per 1000, is germicidal, but imparts a strong acid ilavour to the water. Carbon dioxide under pressure is also effective and bottled mineral waters, such as soda water, are usually very safe to drink. 

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