
Reactive Red 239 is a high-fixation vinyl sulfone (VS) reactive dye that produces a deep, neutral to slightly bluish-red shade. It is often a formulated mixture based on Reactive Red 198, designed to provide excellent build-up and achieve very deep, saturated red and crimson shades economically. Its robust performance and high fixation efficiency make it a reliable choice for dyeing all types of cellulosic fibres where a strong, durable red is required.