Synthesis and Characterization of Nitrosonaphthol Dyes Based on 1-Naphthol and Their Dyeing Properties on Tanned Leather

Umar Salami  Ameuru; Mohammed Kabir  Yakubu; Kasali Ademola  Bello

doi:10.4236/ojapps.2014.46032

Umar Salami Ameuru^*, Mohammed Kabir Yakubu, Kasali Ademola Bello

Abstract: Nitrosonaphthol dyes and other corresponding analogues were synthesised from 1-Naphthol. The dyes were applied onto chrome and vegetable tanned leather upon characterization. The results indicate that the dye bath exhaustion was better on chrome tanned leather than on vegetable tanned leather. This may be attributed to the chelating effect of chrome on leather and the higher temperature of dyeing the chrome tanned leather compared with the vegetable tanned leather. The fastness properties of the dyes of washing ranging from (3 - 5), perspiration on acid (4 - 5), alkaline (4 - 5) and light (4 - 7) were impressive on both vegetable and chrome tanned leather respectively.

Keywords: 2-Nitroso-1-Naphthol, Tanned Leather, Exhaustion, Fastness

Cite this paper: Ameuru, U. , Yakubu, M. and Bello, K. (2014) Synthesis and Characterization of Nitrosonaphthol Dyes Based on 1-Naphthol and Their Dyeing Properties on Tanned Leather. Open Journal of Applied Sciences, 4, 354-359. doi: 10.4236/ojapps.2014.46032.

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