1948
DOI: 10.1021/ja01182a064
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Colorimetric Determination of Iron with 4-Hydroxybiphenyl-3-carboxylic Acid1

Abstract: Vol. 70where C is concentration in weight per cent, of Li2Cr207• 2H20, with an average error of 0.0006 in the density. These data are in substantial agreement with those of Heydweiller,4 which cover the range up to 23%, when the temperature difference is taken into consideration.Solubility in Water.-This was determined by agitating about 2 liters of solution with an excess of the solid phase in a covered container at a constant temperature provided by an immersion heater and a vapor-mercury sensitive element.A… Show more

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Cited by 61 publications
(13 citation statements)
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“…The experiments were performed at To determine the stoichiometry of the resulting species the mole ratio method was applied. 92 The inset of Fig. 7 shows a plot of absorbance values at 345 nm versus molar ratio [Sm III ]/ [H 4 L].…”
Section: Spectrophotometric Titrationsmentioning
confidence: 99%
“…The experiments were performed at To determine the stoichiometry of the resulting species the mole ratio method was applied. 92 The inset of Fig. 7 shows a plot of absorbance values at 345 nm versus molar ratio [Sm III ]/ [H 4 L].…”
Section: Spectrophotometric Titrationsmentioning
confidence: 99%
“…The UV-vis spectra of TC1-3 show characteristic bands between 290 and 340 nm in CH 3 CN / H 2 O (3v/v). Complexation properties of TC1-3 were studied towards various metal salts The stoichiometry of metal-ligand (M-L) complexes was determined both by the molar ratio (8) and the Job plot (9) methods ( Figure 3). The results are given in Table 1.…”
Section: Complexation Studymentioning
confidence: 99%
“…For compound 5, the new absorption band appears at 330 nm and its intensity increased until exactly 2 equivalents of the metal ion were added, confirming the formation of a binuclear complex. The stoichiometries of the complexes between the metal salt and the ligand were determined by both Job's plots [35] and mole ratio [36] methods.…”
Section: Uv-visible Titrationsmentioning
confidence: 99%