Abstract
A solubility and thermoanalytical study of alkali and alkaline earth solid complexes of pyromellitic acid (1,2,4,5-benzenetetracarboxylic acid, H 4L) is reported. The insoluble Na + species is Na 2LH 2. K +, Rb + and Cs + form MLH 3. The stoichiometry of precipitation of H 4L with Ca 2+, Ba 2+ and Sr 2+ depends on pH: at pH < 4, MLH 2 is formed; in the range 4 < pH < 4.5, we found a mixture of MLH 2 and M 2L; and at pH > 4.5, only M 2L is formed. The p K s0 of all the species were determined. The insoluble compounds were also characterized by thermogravimetric analysis.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
