Basic Dyes


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Basic Dyes

 

organic dyes that have the properties of bases and contain the amino group NRʹRʺ (Rʹ and Rʺ denote hydrogen or a low-molecular-weight alkyl). In terms of chemical structure, basic dyes are mainly aryl-methane, quinonimine, and azo dyes.

Basic dyes are brilliant dyes of all colors, but they are not fast and therefore are virtually not used for dyeing cotton textiles. They are widely used in dyeing paper, leather, and wood, as well as in the preparation of printing inks. The salts of basic dyes and phosphotungstomolybdic acid (fanal varnishes) are widely used in the printing industry.

Basic dyes are more colorfast in polyacrylonitrile fibers; special basic dyes used for this purpose, called cation dyes, are brilliant and highly fast.

REFERENCE

Chekalin, M. A., B. V. Passet, and B. A. Ioffe. Tekhnologiia organiches-kikh krasitelei i promezhutochnykh produktov. Leningrad, 1972.

M. A. CHEKALIN

References in periodicals archive ?
Magdy, Removal of different basic dyes from aqueous solutions by adsorption on palm-fruit bunch particles, Chem.
Thermodynamic factor and the structural factor of dyeing of acrylic fibre with basic dyes were reported by Wang (2009).
Basic dyes removal from wastewater by adsorption on rice husk carbon, Indian Journal of Chemical Technology, 8: 133-139.
Djafarzadeh, "Decolorization of basic dye solutions by electrocoagulation: an investigation of the effect of operational parameters," Journal of Hazardous Materials, vol.
reported the adsorption of basic dyes by activated carbon fiber and modified alginate [19].
Adsorption of basic dyes on granular activated carbon and natural zeolite.
Basic Dyes,Electric Call bells/buzzers/door bells,Electric Soldering Iron,Electric Transmission Line Hardware items like steel cross bars, cross arms clamps arching horn, brackets, ,Electronic door bell,Emergency Light (Rechargeable type),Enamel Wares & Enamel Utensils, Equipment camouflage Bamboo support, Exhaust Muffler,Expanded Meta,Eyelets,Film Polythene - including wide width film,Film spools & cans,Fire Extinguishers (wall type),Foot Powder,French polish,Funnels,Fuse Cut outs,Fuse Unit,Garments (excluding supply from Indian Ordnance Factories),Gas mantels,Gauze cloth
Deniz and Saygideger (2011) also worked on the biosorption of basic dyes by using princess tree leaf biomass and evaluated the thermodynamic parameters.
Uniform rate of 15% customs duty levied on dyes except basic dyes (3204.1300) and indigo blue dyes (3204.1510) being used in textile sector.
Sorption of basic dyes on CFA increased at high pH values, whereas the opposite trend was found for acid dyes [16].
Huang, "Adsorption of basic dyes onto montmorillonite," Journal of Colloid and Interface Science, vol.
Key product segments and sub-segments analyzed include-Inorganic Pigments (Titanium Dioxide, Iron Oxides and Others), Organic Pigments, and Dyes (Acid Dyes, Basic Dyes, Direct Dyes, Disperse Dyes, Fiber Reactive Dyes, Vat Dyes, Fluorescent Brighteners and Others).