In the crystal structure of the title compound, C(16)H(11)NO(5)S, the plane of the naphthalene ring system forms a dihedral angle of 63.39 (8)° with the benzene ring. The nitro group makes a dihedral angle of 10.73 (16)° with the benzene ring. Weak intra- and inter-molecular C-H⋯O inter-actions are observed.

The organic anion of the title compound, {[Na(C(15)H(9)O(10)S)(H(2)O)(2)]·H(2)O}(n) {systematic name: poly[[diaqua-[μ-2-(3,4-dihy-droxy-phen-yl)-3,5,7-trihy-droxy-4-oxo-4H-chromene-8-sulfon-ato]-sodium] monohydrate]}, has a nearly planar structure. The Na atom is six-coordinated by O atoms, two from water mol-ecules and four from the anion. The dihedral angle between the ring systems in the ani...

Perfluorooctane sulfonate (PFOS) is under increased scrutiny asanenvironmentalpollutantduetorecentreportsof itsworldwide distribution, environmental persistence, and bioaccumulation potential. The susceptibility of technical PFOS and PFOS branched isomers to chemical reductive dehalogenation with vitamin B12 (260 μM) as catalyst and Ti(III)-citrate (36 mM) as bulk reductant in anoxic aqueous so...

The influence of co-ions on the adsorption properties two surfactants: ABS (dodecylbenzene sulfonic acid) and its sodium salt ABSNa50 in aqueous systems, has been studied discussed. On basis experimental measurements equilibrium dynamic surface tension, a series parameters were determined, such as critical micelle concentration (CMC), parameters, diffusion coefficients, micellar dissociation co...