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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
KJ00004350904.pdf
[fulltext] 505 KB
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).
Subjects
工学 ( Other)
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