WebIn this study, we present the degradation of three different reactive dyes (Reactive Black 5, Reactive Blue 19 and Reactive Blue 21) by ozone, at two different pH conditions. The ozonation process achieved a very fast decoloration rate for the studied dyes. WebFeb 23, 2014 · The reactive dyestuff assessed in this study, Reactive Blue 21 (RB21 -CAS number 12236-86-1), has a molecular weight of 1079.53 g mol -1 , consisting of a homo-functional, vinylsulphone reactive ...
Sustainable low liquor ratio dyeing of cotton with C.I. Reactive …
WebJan 17, 2024 · (2) Reactive Blue 21 [copper, (29H,31H-phthalocyaninato(2-)-N 29,N 30,N 31,N 32)-, sulfo((4-((2-sulfooxy)ethyl)sulfonyl)phenyl)amino) sulfonyl derivs] (CAS Reg. … WebJul 15, 2024 · Product name Reactive Blue 21 1.2 Other means of identification 1.3 Recommended use of the chemical and restrictions on use 1.4 Supplier's details 1.5 Emergency phone number SECTION 2: Hazard identification 2.1 Classification of the substance or mixture Skin irritation, Category 2 Eye irritation, Category 2 how far is ash from myrtle beach
Using an N-vinylpyrrolidone co-polymer in reactive dye printing as …
WebReactive blue 21 (RB21), a phthalocyanine dye, is frequently used in the textile industry and has been rarely researched for decontamination in wastewater. Moreover, no existing approach exhibits effective removal capability. It is therefore highly imperative to quest for alternative solution to address this problem. WebJan 17, 2024 · The color additives are the copolymers formed as the reaction product of 1,4-bis[(2-hydroxyethyl)amino]-9,10-anthracenedione bis(2-methyl-2-propenoic)ester (C.I. Reactive Blue 247) (CAS Reg. No. 109561-07-1) with one or more vinyl and/or acrylic monomers to form the contact lens material. (b) Uses and restrictions. WebJan 27, 2024 · Compared with the traditional reactive printing with urea, the total nitrogen content in the wastewater after NS-02 is reduced to 15% of that using urea when treated with a suitable amount of inorganic flocculants. It meets the national discharge requirements for printing and dyeing wastewater. hifi lowboard design