24347-99-7Relevant academic research and scientific papers
Development of a Robust Protocol for the Determination of Weak Acids' p KaValues in DMSO
Jung, Sebastian T.,Podlech, Joachim
, p. 10951 - 10957 (2020/09/23)
Two methods for the determination of pKa values of weak acids are described, a direct titration with dimsyl potassium in the presence of an indicator and a back-titration in which an analyte/indicator mixture is deprotonated and then titrated with ammonium chloride. Both methods have been validated by measuring pKa values of compounds, for which values had been determined previously. The back-titration method was applied to measure pKa values of two 1,3-dithiane-derived bissulfoxides and a monosulfone.
CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS
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Paragraph 0103-0105, (2017/01/02)
Catalyst component for the polymerization of olefins comprising Mg, Ti and an electron donor of formula (I) In which X and Y are selected from, R 1 , and -OR 1 and -NR 2 , B is oxygen or sulphur S is sulphur, R 1 is selected from C 1 -C 15 hydrocarbon groups, optionally contain a heteroatom selected from halogen, P, S, N,O and Si, which can be fused together to form one or more cycles, R is hydrogen or R 1 and A is a bivalent bridging group with chain length between the two bridging bonds being 1-10 atoms.
