International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
Call for Papers | Fully Refereed | Open Access | Double Blind Peer Reviewed

ISSN: 2319-7064

Downloads: 105 | Views: 142

Research Paper | Chemistry | India | Volume 9 Issue 4, April 2020

Metachromasia Induced in Cationic Dyes by Iodide Salts

Amitabha Saha [2]

Abstract: Inorganic salts like NaI and KI induce distinct metachromasia in thiazine dye 1, 9-dimethylmethylene blue (DMMB, 2.0X10-5M) and cyanine dye pinacyanol chloride (PCYN, 2.0X10-5M). Half plateau values signifying destruction of metachromatic compounds to the extent of 50 % correspond to ̴22 %, and ̴30 % ethanol for DMMB-NaI, and PCYN-NaI systems respectively. Conductometric titrations reveal that DMMB and PCYN bind with NaI in the molar ratio of 1: 1

Keywords: Metachromasia, Chromotrope, α-band, β-band, µ-band

Edition: Volume 9 Issue 4, April 2020,

Pages: 810 - 812

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