Kugel, Roger W. published the artcileMetachromasy: the interactions between dyes and polyelectrolytes in aqueous solution, Quality Control of 10510-54-0, the publication is Advances in Chemistry Series (1993), 507-33, database is CAplus.
The literature on metachromasy (the color change in the dye absorption spectrum that occurs when certain cationic dyes interact with anionic polyelectrolytes) is overviewed and two quant. anal. methods for acrylic acid-acrylamide copolymer based on the metachromatic effect are proposed. The color-array method allows for the visual determination of polymer concentration by observing the color of Toluidine Blue O, Cresyl Violet Acetate, or Safranine O at various P/D (polymer acrylate residue to dye mol.) ratios. An abrupt color change is observed at P/D = 1. The complexation-extraction method is based on the removal of the dye Janus Green B from solution by complexation with acrylic acid-acrylamide copolymer followed by extraction with 1,1,2-trichlorotrifluoroethane (Freon) solvent. Typical concentration ranges for both tests were 0-10 ppm polymer (0-7.4 ¡Á 10-5 M acrylate residue) and 1-6 ¡Á 10-5 M dye.
Advances in Chemistry Series published new progress about 10510-54-0. 10510-54-0 belongs to catalysis-chemistry, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Inhibitor,Inhibitor, name is 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate, and the molecular formula is C18H15N3O3, Quality Control of 10510-54-0.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia