Aniline brown
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Description
A synthetic brown dye prepared by oxidizing rosaniline that was first made by Jacobson using this method. Many other online brown colorants, such as Bismarck brown and chemicals similar but synthesize with different starting materials. Aniline Brown directly forms a reddish brown color with silk and a brown color with wool. The brown dyes deeply penetrate the fibers of materials rather than just sitting on the surface. This provides a transparent, vibrant coloration that beautifully preserves the visibility of underlying textures, such as wood grain or the natural hide of leather.
Synonyms and Related Terms
Basic Brown 1; Bismarck brown, Manchester Brown
Risks
- Early aniline dyes can be toxic and cause skin irritation
Physical and Chemical Properties
- Insoluble in water
- Soluble in alcohol and other organic solvents
Resources and Citations
- F. Crace-Calvert, Dyeing and Calico Printing, Palmer & Howe, London, 1876
- E. Hagan, I. Castro-Soto, M. Breault, et al. The lightfastness of early synthetic organic dyes. Herit Sci 10, 50 (2022).