Basic (Cationic) Dyes
Bismarck Brown Y
A classic diazo brown for wool, silk, leather, and paper.
Overview
Bismarck Brown Y is a cationic diazo dye giving a warm yellow-brown shade, and one of the earliest azo dyes developed. Like other basic dyes, it carries a positive charge that draws it onto the negatively charged sites of protein fibres and lignin-rich pulp, and it is long established both as a textile and paper colourant and as a biological stain used in histology.
Colour Reference
Appearance, dilution, and application
Appearance
Dilution
Application
Applications
Where it is used
- Wool and silk dyeing
- Leather colouring
- Paper and board coloration
- Bamboo and wood colouring
Benefits
Why mills choose it
Warm yellow-brown shade
Cationic dye chemistry
Broad substrate range
Long-established, well-documented dye class
Identity & Data
Technical data
Typical values. For a full technical datasheet or safety data sheet, get in touch.
- C.I. Name
- C.I. Basic Brown 1
- C.I. Number
- 21000
- CAS Number
- 1052-36-6
- Molecular Weight
- 346.40
- Molecular Formula
- C18H18N8
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