The Chemistry Of Synthetic Dyes. Reactive Dyes -

The "business end" that reacts with the fibre (e.g., vinyl sulfone or cyanuric chloride).

Typical of dyes (like Remazol). In an alkaline bath, the dye undergoes an elimination reaction to form a vinyl sulfone group, which then adds across the fiber's functional groups. Result: A highly durable covalent linkage. ⚡ Key Properties The Chemistry of Synthetic Dyes. Reactive Dyes

The dye attaches to the fibre through a chemical reaction triggered by alkaline conditions (high pH). There are two main types of reaction mechanisms: 1. Nucleophilic Substitution The "business end" that reacts with the fibre (e