New chemical markers based on phthaleins

S. V. Nekhoroshev, V. P. Nekhoroshev, O. K. Poleshchuk, A. G. Yarkova, A. V. Nekhorosheva, A. K. Gasparyan

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    New chemical markers based on mixtures of individual phthaleins were developed. These markers are characterized by high level of secrecy in use, good transferability to contacting persons, enhanced retention on the objects marked, and reliable identification of phthaleins by expert investigation. The experimental studies of the markers obtained show that the synthesized mixture of three phthalein homologs contains the previously unknown phthalein with unsymmetrical phenolic substituents, o-cresolphenolphthalein [3-(3′-methyl-4′-hydroxyphenyl)-3-(4?-hydroxyphenyl)phthalide], which decreases the probability of the marker falsification. Quantum-chemical calculations of the reaction of the o-cresolphthalein synthesis show that the overall reaction is characterized by small positive changes in the enthalpy and Gibbs free energy, and the second and third steps occur with negative changes in the Gibbs energy. The optimum structure of the transition state was calculated.

    Original languageEnglish
    Pages (from-to)711-718
    Number of pages8
    JournalRussian Journal of Applied Chemistry
    Volume88
    Issue number4
    DOIs
    Publication statusPublished - 23 Apr 2015

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    Gibbs free energy
    Enthalpy
    phthalide
    cresolphthalein

    ASJC Scopus subject areas

    • Chemistry(all)
    • Chemical Engineering(all)

    Cite this

    Nekhoroshev, S. V., Nekhoroshev, V. P., Poleshchuk, O. K., Yarkova, A. G., Nekhorosheva, A. V., & Gasparyan, A. K. (2015). New chemical markers based on phthaleins. Russian Journal of Applied Chemistry, 88(4), 711-718. https://doi.org/10.1134/S1070427215040278

    New chemical markers based on phthaleins. / Nekhoroshev, S. V.; Nekhoroshev, V. P.; Poleshchuk, O. K.; Yarkova, A. G.; Nekhorosheva, A. V.; Gasparyan, A. K.

    In: Russian Journal of Applied Chemistry, Vol. 88, No. 4, 23.04.2015, p. 711-718.

    Research output: Contribution to journalArticle

    Nekhoroshev, SV, Nekhoroshev, VP, Poleshchuk, OK, Yarkova, AG, Nekhorosheva, AV & Gasparyan, AK 2015, 'New chemical markers based on phthaleins', Russian Journal of Applied Chemistry, vol. 88, no. 4, pp. 711-718. https://doi.org/10.1134/S1070427215040278
    Nekhoroshev SV, Nekhoroshev VP, Poleshchuk OK, Yarkova AG, Nekhorosheva AV, Gasparyan AK. New chemical markers based on phthaleins. Russian Journal of Applied Chemistry. 2015 Apr 23;88(4):711-718. https://doi.org/10.1134/S1070427215040278
    Nekhoroshev, S. V. ; Nekhoroshev, V. P. ; Poleshchuk, O. K. ; Yarkova, A. G. ; Nekhorosheva, A. V. ; Gasparyan, A. K. / New chemical markers based on phthaleins. In: Russian Journal of Applied Chemistry. 2015 ; Vol. 88, No. 4. pp. 711-718.
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    AU - Yarkova, A. G.

    AU - Nekhorosheva, A. V.

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