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Dl-Tartaric acid

In Europe, South Africa, and Japan, racemic (R, R )-tartaric acid [13337-9] (DL-tartaric acid) is also produced commercially via maleic anhydride oxidation. [Pg.524]

One of the earhest known examples of racemization was described by Pasteur in his studies of tartaric acid, By heating D-tartaric acid to 165°C in water lie partially converted it into a mixture of D-, L- and fnejo-tartaric acids. The occurrence of some DL-tartaric acid along with the natural D-tartaric acid in the wine industry is explained on the basis of partial racemization,... [Pg.1405]

Poly(w-carboranyl-siloxane) elastomers containing a mixture of di-methyl-and methyl(phenyl)-silyl units were synthesised using the Ferric Chloride catalyzed condensation reaction between di-chloro-di-organosilane and 1,7-bis(di-methyl(methoxy)silyl)-/w-carborane. Silica Nano tubes synthesised using i 7situ growth of DL Tartaric acid nanocrystals and concurrent sol-gel hydrolysis and condensation of silane. [Pg.281]

The Si02 nanotubes were obtained using the sol-gel method at room temperature in a solution of DL-tartaric acid, ethanol, and tetraethylorthosilicate (TEOS) via the addition of ammonium hydroxide [1]. They had a square shape. Scheme 1 shows the mechanism of the sol-gel process. [Pg.937]

Tartaraldehyde, nitromethane, 740 D-Tartaric add, 351, 492,838,909 DL-Tartaric acid, 760 mew-Tartaiic add, 760 meso-Tartaric dialdehyde, 634-635 Teflon, 14, 25 Teflon-Haion, 62,63 Tellurium dibromide, 348 Terephthalic add, 666, 733,1084-1085 o-Terphenyl, 780, 781 p-Terphenyl, 337,931,932,1238 o-Terphenylenemercury, 267 cifrl,8-Tetpin, 950 Terpinolene, 568 Terramycin, 1183... [Pg.727]

The occurrence of some DL-tartaric acid along with natural D-tartaric acid in the wine industry is explained on the basis of partial racemization. The L-form is the commercial product. [Pg.1206]

These two diastereoisomers posses different properties, say, different solubilities, so that the two can be separated by one of the ordinary methods, say, by fractional crystallisation. After separation, the optically active reagent is removed from the molecule (if the diastereoisomer is a salt, it is treated with acid or alkali and if it is an ester, hydrolysis is carried out) and pure forms of enantiomers are isolated. Resolution of dl-tartaric acid is the classical example of the application of this method. [Pg.60]

Any commercial source of dl-tartaric acid works well. The ratio of tartaric acid to diamine is 1 1. The checkers found that if isomerization of the meso-diamine is incomplete, this purification procedure provides a mixture of meso- and dl-diamines. [Pg.28]

DL-tartaric acid in grape juices, wines, soft drinks, sakes, cooking sakes, jams, candies, tablet candies, and pickles... [Pg.883]

Interfacial Polymerization Thin PANI-NTs with an average outer diameter of 28 nm have been synthesized by interfacial polymerization in a calcium carbonate-stabilized oil/ water emulsion [161]. PANI-NTs were synthesized by simply tuning the concentration of APS in a two-phase (toluene solution of aniline/acetic acid aqueous solution of APS) medium [392], or by tuning the concentration of oL-tartaric acid in a two-phase (toluene solution of aniline/DL-tartaric acid aqueous solution of APS) medium [393]. The difference in the PANI morphologies was attributed to the difference in the relative rates of interfacial nucleation to aqueous nucleation. [Pg.51]

Q. Sun and Y. Deng, The unique role of DL-tartaric acid in determining the morphology of polyaniline nanostructures during an interfacial oxidation polymerization. Mater. Lett., 62, 1831-1834 (2008). [Pg.92]

DL -tartaric acid mercury(II) oxide sodium potassium tartrate silicon dioxide (quartz) sodium chloride sucrose... [Pg.534]

Dihydroxybutanedioic acid. See L-Tartaric acid DL-Tartaric acid... [Pg.1345]

Dihydroxyspiro [isobenzofuran-1 (3H),9 -[9H] xanthen]-3-one disodium salt. See D C Yellow No. 8 Fluorescein sodium Dihydroxysuccinic acid a,P-Dihydroxysuccinic acid. See L-Tartaric acid D-Dihydroxysuccinic acid. See D-Tartaric acid DL-Dihydroxysuccinic acid. See DL-Tartaric acid... [Pg.1350]

Pararosaniline, N,N,N, N, N",N"-hexamethyl-, chloride. See Basic violet 3 Parasept. See Butylparaben Parasonar Mark . See Ethyl urocanate Paratartaric acid. See DL-Tartaric acid Paratherm NF. See Mineral oil Parathion CAS 56-38-2 UN NA 2783 (DOT)... [Pg.3044]

See other pages where Dl-Tartaric acid is mentioned: [Pg.140]    [Pg.312]    [Pg.15]    [Pg.598]    [Pg.189]    [Pg.213]    [Pg.816]    [Pg.938]    [Pg.514]    [Pg.383]    [Pg.70]    [Pg.326]    [Pg.26]    [Pg.35]    [Pg.337]    [Pg.1433]    [Pg.599]    [Pg.1311]    [Pg.1267]    [Pg.26]    [Pg.35]    [Pg.337]    [Pg.14]    [Pg.201]    [Pg.1243]    [Pg.30]    [Pg.48]    [Pg.581]    [Pg.1345]   
See also in sourсe #XX -- [ Pg.6 , Pg.82 ]

See also in sourсe #XX -- [ Pg.15 , Pg.90 ]

See also in sourсe #XX -- [ Pg.384 ]



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