Subsequently, we aim to study the reaction of this drug with bulky counter anions such as sulfonphthalein acidic dyes
. Sulfonphthaleins are one of the most interesting families of anionic dyes and have attracted scientific attention; this is attributed to their molecular structure which allows formation of ion-associate complexes with various drugs, where ion pair or ion association complexes are those complexes in which the analytical species associates with oppositely charged ions to form neutral compounds [9-12].
 Acidic structures would be stained by basic dyes, while basic structures would be stained by acidic dyes
. [4,5,8] Owing to the strong affinity of Z.officinale for the cytoplasm, it can be inferred that the plant iss acidic in nature, because it stained muscle fibers yellow, cytoplasm yellow, and the nuclei deeply green.
Eriochrome Black T (EBT) and Astrazon FGGL blue are acidic dyes
. EBT is poison causes severe eye irritation or blindness.
 investigated the removal of health hazard causing acidic dyes
(acid violet 17, acid violet 49, acid violet 54, acid blue 15 and acid red 119) from aqueous solution by adsorption.
Summary: TEHRAN (FNA)- Researchers at Iran University of Science and Technology succeeded in improving the ability of nanosilica to adsorb acidic dyes
by functionalizing porous nanosilica.
Algerian researchers have discovered that orange peel could be used to remove acidic dyes
from industrial effluent.
Ion-pairing with acidic dyes
under the described conditions is less likely because the carboxy metabolite is a zwitterion.
Diarylguanidines are used in the dye industry to form salts with acidic dyes
or pigments that otherwise would be insoluble.
Anionic dyes are commonly known as acidic dyes
and widely employed in textile dyeing.
To this end, one buffer was designed to adequately separate cationic dyes (general class of basic dyes), and another buffer was designed to separate anionic dyes (general class of acidic dyes
It shows that maximum adsorption occurred in acidic conditions for these acidic dyes
. Adsorption processes are strongly dependent on pH.
In the present work, an effort has been made of verifying the capability of IJSP as a means of removal of acidic dye
, Acid Blue 25 (AB25), from the wastewater solutions, which are synthetic.