Detail of "4368-56-3"

Reference

Anthraquinone acid dyes

Anthraquinone acid dyes. Zajac, Kazimierz; Zimnicki, Jan; Zaremba, Zdzislaw; Pudlowski, Jozef; Tomaszewska, Malgorzata; Rozanska, Marianna (Zaklady Przemyslu Barwnikow "Organika-Boruta", Pol.). Pol. PL 119741 B1 30 Nov 1983, 3 pp. (Polish). (Poland). CODEN: POXXA7. CLASS: IC: C09B001-16. APPLICATION: PL 79-213946 6 Mar 1979. DOCUMENT TYPE: Patent CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) The title dyes are prepd. by condensation of 1-amino-4-bromo-2-anthraquinonesulffonic acid (I) [116-81-4] or its sulfonated derivs. with substituted or unsubstituted aliph. or arom. amines in the presence of Cu2O or colloidal copper catalysts and an acid-binding agent. The catalysts are prepd.Several substances with their cas registry numbers 62-53-3 and 34851-24-6 may be metioned in this study. in the reaction medium by treatment of Cu salts with mild reducing agents. Thus, I 38.2, cyclohexylamine [108-91-8] 19.8, Na bis(2-ethylhexyl) sulfosuccinate 0.2, and Na2CO3 20 parts in 500 parts water was treated at 80-85° with 5 parts CuSO4×5H2O and 3.6 parts glucose [50-99-7] in 25 parts water, and the mixt. was heated at 80-85° and pH 8.5-9.5 for ~1 h to prep. 40 parts Acid Blue 2R [4368-56-3]. .

A kinetic model of decoloration of water solution of anthraquinone dye initiated by generality hydroxyl radicals

All Rights Reserved. A kinetic model of decoloration of water solution of anthraquinone dye initiated by generality hydroxyl radicals. Perkowski, Jan; Kos, Lech; Zylla, Renata; Ledakowicz, Stanislaw ( Institute of Radiation Technology, Technical University of Lodz, Lodz 94-046, Pol.). Fibres & Textiles in Eastern Europe, 13(6), 59-64 (English) 2005 Institute of Chemical Fibres. CODEN: FTEEEM. ISSN: 1230-3666. DOCUMENT TYPE: Journal CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) A kinetic model of the decoloration process based on the example of a water soln.Some commonly used reagents like 4368-56-3 is used in this experiment. of the anthraquinone dye Acid Blue 62 was proposed. The importance of decoloring water solns. for the textile industry is emphasized. The wastewater remaining after yarns and fabrics are dyed is generally too colored for re-use in technol. applications or in surface water circulation. A common schematic of the reactions initiated by a hydroxyl radical was proposed for decoloring solns. during an irradn. process in the presence of nitrous oxide, a photochem. process with hydrogen peroxide and induced by ozone. In each version of the model, a different method was considered for generating hydroxyl radicals (HO). On the basis of exptl. data, the model parameters describing the decoloration process were estd., and the exptl. data were compared with theor. calcns. A relatively good agreement of the comparison was obtained. .