New discoveries in chemical research and development in 2021.As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 68-04-2, Name is Sodium citrate, SMILES is O=C(CC(C([O-])=O)(O)CC([O-])=O)[O-].[Na+].[Na+].[Na+], in an article , author is Hampton, KW, once mentioned of 68-04-2, Quality Control of Sodium citrate.
Polyampholyte latexes that contain 29/18 and 25/23 mol % of (styrylmethyl)trimethylammonium/methacrylate units and styrene cross-linked with divinylbenzene are colloidally stable in 4 M NaCl solution. As catalytic media in basic solutions 0.5 mg mL(-1) of the polyampholyte latexes increase the rate of decarboxylation of 6-nitrobenzisoxazole-3-carboxylate (6-NBIC) 60-115 times, while the precursor polycation latexes increase the rate 540-670 times the rate in water alone. The latexes are active catalysts in 0.67 M NaCl solution, but activity decreases as the concentration of added NaCl increases. Analysis of rate constants at varied particle concentrations indicates that the fractions of the 6-NBIC anions bound to particles are similar in the two types of latexes and that the differences in activity are due primarily to larger intraparticle rate constants in the polycation latexes than in the polyampholytes.
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Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics