Studies on phthalein complexone separation and acid equilibria of phthalein complexone and alkaline earth metal complexes with phthalein complexone
Technology reports of the Yamaguchi University Volume 1 Issue 1
Page 87-96
published_at 1972-12
Title
Studies on phthalein complexone separation and acid equilibria of phthalein complexone and alkaline earth metal complexes with phthalein complexone
Creators
Yoshino Takashi
Creators
Inada Kyo
Creators
Sato Fumihiro
Creators
Murakami Sadaaki
Source Identifiers
The purification of the metallochromic indicator Phthalein Complexone, the potentiometric investigation of the acid equilibria and the formation constants of alkaline earth metal complexes with PC are described. PC was purified with both a cellulose column and a precipitation method. The purity of the product was nearly 100%. The acid formation constants of PC and the metal chelate formation constants of four alkaline earth metals, Mg(II), Ca(II), Sr(II) and Ba(II), with PC have been calculated. These metals form four 1:1 complex species, MH_3L, MH_2L, MHL and ML, and two 2:1 complex species, M_2HL and M_2L, in an aqueous solution (μ=0.1). The stability order for the ligand is Mg(II)>Ca(II)>Sr(II)>Ba(II).
Languages
eng
Resource Type
departmental bulletin paper
Publishers
山口大学工学部
Date Issued
1972-12
File Version
Version of Record
Access Rights
open access
Relations
[ISSN]0386-3433
[NCID]AA0086073X
Schools
工学部