Detail of "2800-80-8"

Reference

Spectrometric determination of trace copper by catalytic kinetics

Spectrometric determination of trace copper by catalytic kinetics. Chen, Guoshu; Dong, Luoming; Jiang, Yumei (Chem. Dep., Jiangxi Univ., Nanchang, Peop. Rep. China). Fenxi Huaxue, 14(12), 936-8 (Chinese) 1986. CODEN: FHHHDT. ISSN: 0253-3820. DOCUMENT TYPE: Journal CA Section: 9 (Biochemical Methods) Cu(II) in NH3. 2800-80-8 and 7440-50-8 which are cas registry numbers are also used here.H2O can catalyze the decolorizing reaction resulting from the oxidn. of bromophenol red by hydrogen peroxide. The optimum conditions and a highly selective method for detg. trace Cu(II) were obtained. The sensitivity of the method is 5.6 ′ 10-12 g/mL. The method has been used to det. subtrace Cu in biol. samples with satisfactory results. .

Laser pH-jump initiated proton transfer on charged micellar surfaces

Laser pH-jump initiated proton transfer on charged micellar surfaces. Politi, Mario J.; Fendler, Janos H. (Dep. Chem., Clarkson Coll. Technol., Potsdam, NY 13676, USA). J. Am. Chem. Soc., 106(2), 265-73 (English) 1984. CODEN: JACSAT. ISSN: 0002-7863. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) Proton-transfer processes involving 8-hydroxy-1,3,6-pyrenetrisulfonate (I), bromocresol green, bromophonol red, bromothymol blue, and thymol blue were investigated by steady-state and subnanosecond time-resolved fluorescence techniques as well as laser pH jump in water and in aq.Several substances with their cas registry numbers 76-59-5 and 2800-80-8 may be metioned in this study. cationic micellar solns. Data obtained are consistent with the strong solubilization of the initially formed I-CTAB complex by micelles. I, however, remains in a relatively aq. environment where its rotation is relatively free. The identical ground and excited state dissocn. consts. of I in the absence and in the presence of micelles are the consequence of approx. equal retardation of both the protonation and deprotonation rates. Those micellar retardation of proton-transfer rates are the consequence of altered microenvironments and electrostatic interactions. If dyes having appropriate pKa values are solubilized in addn. to I on the micellar surface, the direction of the laser-initiated proton flow can be delicately tuned by altering the pH. Since each micelle contains less than one donor and acceptor, proton transfer must occur via solvent mols. .