Citric acid tris

Citric acid, octadecyl ester. See Stearyl citrate Citric acid, tributyl ester. See Tributyl citrate Citric acid, tributyl ester, acetate. See Acetyl tributyl citrate Citric acid, tris (2-octyldodecyl) ester. SeeTrioctyldodecyl citrate Citroglycerides. See Citric acid esters of mono- and diglycerides of fatty acids... 

Synonyms Citric acid, tris (2-oclyldodecyl) ester 2-Hydro) -1,2,3-pro-panetricarboxylic acid, tris (2-octyldodec ) ester Propanetricart)0) ic acid, 2-hydroxy-, tris (2-octyldodecyl) ester Tii-2-octyldodecyl citrate Definition Triester of octyidodecanol and citric acid... 

Citric acid, tris (2-octyldodecyl) ester. See Trioctyidodecyl citrate... 

In order to illustrate distribution of species in buffers and buffer capacities p, the slightly modified Okamoto et al. [69] computer program was used in the case of two citric acid + tri-sodium citrate buffers with total concentration of c=0.1 M and c=0.2 M. The speciation of both buffers as a function of pH is plotted in Fig. 3.19. 

Trade Names Containing Imwitor 377 Imwitor 380 Citric acid, 6-(2-hydroxydecyloxy)-2,3,4,5,6-pentahydroxyhexyl ester. See Disodium hydroxydecyl sorbitol citrate Citric acid, monoester with glycerol. See Monoglyceride citrate Citric acid monosodium saK. See Sodium citrate Citric acid, octadecyl ester. See Stearyl citrate Citric acid sodium salt. See Sodium cKrate Citric acid, tributyl ester. See Tributyl cKrate Citric acid, triisopropyl ester. See Triisopropyl citrate Citric acid, triisostearyl ester. See Triisostearyl citrate Citric acid, tripotassium salt. See Potassium citrate Citric acid, tris (2-octyldodecyl) ester. See Trioctyidodecyl citrate Citric acid trisodium saK. See Trisodium citrate... 

Citric acid esters are used as plasticizers ia plastics such as poly(viayl chloride), poly(vinhdene chloride), poly(viQyl acetate), poly(viQyl butyral), polypropylene, chlorinated rubber, ethylceUulose, and cellulose nitrate. Most citrate esters are nontoxic and are acceptable by the FDA for use in food-contact packaging and for flavor in certain foods. As a plasticizer, citrate esters provide good heat and light stabiUty and excellent flexibiUty at low temperatures. Triethyl citrate, tri- -butyl citrate, isopropyl citrate, and stearyl citrate are considered GRAS for use as food ingredients (224—228). 

The citric acid obtained from fermentation is removed from the culture by precipitation. The precipitation is formed by the addition of Ca(OH)2 200 gl , at 70 °C. The pH of solution is adjusted to 7.2. Tri-calcium citrate tetrahydrate is collected by filtration. The tricalcium citrate as filter cake is dissolved in H2S04 at 60 °C with 0.1% excess, the solid retained is CaS04 and the free citric acid is obtained. The free concentration of citric acid is determined with an enzymatic kit available from Merck. GC/HPLC is recommended for high accuracy of any research work.5... 

When the distribution coefficient for the desired solute from aqueous solutions into even the best of solvents is unfavourable it may become attractive to superimpose reaction. Consider the. separation of citric acid from aqueous solutions, for which physical extraction is unattractive. Here we can use a bulky tertiary amine, e.g. tri-2-ethylhexylamine, which has a very low solubility in water, and dissolve it in a suitable, water-insoluble solvent this will... 

Complexing agents Citric acid 2-Hydroxy-l,2,3-propane tri-carboxylic acid... 

Copper sulfate is used to control protozoan fish ectoparasites including Ichthyopthirius, Tri-chodina, and Costia. The effectiveness of the treatment diminishes with increasing total alkalinity and total hardness of the water (Straus and Tucker 1993). Copper compounds now used to control protozoan parasites of cultured red drum (Sciaenops ocellatus) include copper sulfate, copper sulfate plus citric acid, and chelated copper compounds (forms of copper bound by sequestering agents, such as ethanolamine) chelated copper compounds are considered less toxic to fish than copper sulfate and at least as effective in controlling parasites (Peppard etal. 1991). 

For other catecholate siderophores see di-/tri-aminoalkane (Sect. 3.2) and citric acid (Sect. 4.3) derivatives below for a review see (38). 

The sodium acetate-acetic acid combination is one of the most widely used buffers, and is usually referred to simply as acetate buffer. Other buffer combinations commonly employed in chemistry and biochemistry include carbonate-bicarbonate (sodium carbonate-sodium hydrogen carbonate), citrate (citric acid-trisodium citrate), phosphate (sodium dihydrogen phosphate-disodium hydrogen phosphate), and tris [tris(hydroxymethyl)amino-methane-HCl]. 

The Krebs cycle is sometimes still referred to as the citric acid cycle, citric acid being one of the intermediates involved, and even the tricarboxylic acid cycie, in that several of the intermediates are tri-acids. As the name suggests, the process is a cycle, so that there is a reasonably constant pool of intermediates functioning in an organism, and material for degradation is processed via this pool of intermediates. Overall, though, the material processed does not increase the size of the pool. The compound... 

The tetraanionic [H2O Al3(/r-OH)(/r-OR)3]" [R = C(CH2C02)2C02] moiety has been achieved by the combination of (H20)9 Al(N03)3 with citric acid [101], with the synthesis establishing the existence of polynuclear complexes of a type previously postulated [102, 103], Al NMR spectroscopic studies have established that the tris(aluminium) cluster (Section 3.2.5) is not fluxional in D2O but instead retains three distinct metal environments over a wide pH range (3.0-9.0) with acid hydrolysis occurring below pH 3.0 and the resultant spectrum revealing the presence of [(H2O), (RO)Al3] and/or [(H20) (ROH) A13] " and also [(HjOlg Al] "" [101]. 

Figure 28. Changes in the integrated channel currents for multichannel BLM upon addition of L-Clu, MK-801, and DNQX in series. Solution condition (a) the same as in Figure 27, (b) 20 mM citric acid, 42 mM Tris, 0.15 M NaCI, 5.0 mM glycine, 0.20 mM CaCb, and 25 mg ml" of concanavalin A, pH 7.6, and (c) the same as in Figure 27. Applied potential (a) +30 mV, (b) -30 mV, and (c) +30 mV. The L-Clu solution was injected to the trans side. The antagonist was injected to both sides.

Tri-Nasal spray is a metered-dose manual-spray pump in an amber polyethylene terephthalate bottle with 0.05% w/v triamcinolone acetonide in a solution containing citric acid, edetate disodium, polyethylene glycol 3350, propy-... 

The protected O-glycosyl amino acid ester or O-glycosyl peptide ester (1 mmol) is stirred in morpholine (10 mL) or morpholine-dichloromethane (1 1) for 30 min. After addition of dichloromethane (100 mL), the solution is washed with diluted aqueous acid (citric acid or HC1 pH 4, 50 mL) and with water (4 x 50 mL), dried with NajSO, and concentrated in vacuo. The crude product is dissolved in 2-5 mL of ethyl acetate. During chromatography on silica gel (50 g) with petrolum ether ethyl-acetate (2 1), W-(9-fluorenylmethyl)morpho-line is eluted. Subsequently, the deblocked amino acid or peptide ester is eluted with methanol. 0-(2,3,4-Tri-0-benzoyl-(3-D- xylopyranosyl)-L-serine benzyl ester 14 yield, 0.63 g (98%) mp 55°C [a]D —41.4 (c 0.5, CH3OH). IV-(L-Asparaginyl-L-leucyl-)-0-(2,3,4,-0-benzoyl-(3-D-xylopyranosyl)-L-serine benzyl ester 17 yield, 0.85 g (98%) amorphous [a]D —42.3° (c 0.5 CH3OH). 

Citric acid forms a mixed-metal complex with iron and uranium, similar to the U-citrate complex the Fe-U citrate complex is inert to biodegradation [333a]. A series of publications are dedicated to uranium peroxo complexes with various coligands tri- and quadridentate Schiff bases [334,335], amines, or amino-... 

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