Basic (Cationic) Dyes
Bismarck Brown R
A cationic brown dye for silk and wool, with leather and paper use.
Overview
Bismarck Brown R is a cationic diazo dye closely related to Bismarck Brown Y, giving a similar warm brown shade. It shares the same basic-dye affinity for protein fibres and pulp, and is mainly used for silk and wool dyeing, with leather and paper colouration as secondary applications.
Colour Reference
Appearance, dilution, and application
Appearance
Dilution
Application
Applications
Where it is used
- Silk and wool dyeing
- Leather colouring
- Paper coloration
Benefits
Why mills choose it
01
Warm brown shade
02
Cationic dye chemistry
03
Suitable for silk and wool
04
Secondary use in leather and paper
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 4
- C.I. Number
- 21010
- CAS Number
- 8005-78-5
- Molecular Weight
- 388.47
- Molecular Formula
- C21H24N8
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