Tristimulus Colorimetric and Spectrophotometric Study of the State of 4-Hydroxystyryl Dyes in Aqueous Solutions
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2017
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Анотація
Acid-base properties of 4-hydroxystyryl dyes in aqueous solution have been studied by means of
chemical tristimulus colorimetry and spectrophotometry. Ionization and hydroxylation constants of the dyes
have been determined using chromaticity functions of specific and CIE color difference. It has been shown that
aggregation processes in the solution of 4-hydroxystyryl dyes can be observed by means of tristimulus
colorimetry. A scheme of acid-base transformations of the studied dyes in the solution has been suggested, and
selected spectrophotometric parameters of the equilibrium ionic and molecular forms have been determined.
Опис
Ключові слова
4-hydroxystyryl dye, chemical tristimulus colorimetry, spectrophotometry, ionization constant, hydroxylation constant
Бібліографічний опис
Russian Journal of General Chemistry