Direct Blue 290 Manufacturer in India

Direct Blue 290 — Product Overview

Direct Blue 290 sits in a useful position in the direct dye range — it gives a clean, medium blue shade on cotton and viscose without the process complexity that reactive dyeing demands. No alkali, no elevated fixation temperature beyond the standard 90–100°C boil, and no covalent bonding chemistry to manage. That simplicity is the point. For applications where a reliable, consistent blue is needed and the wash fastness requirement falls in the 3–4 range, direct dyes like this are still the practical, cost-effective answer.

What makes the liquid format specifically useful is process consistency. Powder direct dyes can be unpredictable if dissolution is rushed or water temperature is off — you get undissolved particles in the bath, which means unlevel strike and shade variation. The liquid form is already pre-dispersed at a known concentration, so every batch starts from the same baseline. For continuous dyeing lines and automated dosing systems, this is not a minor convenience — it directly affects right-first-time yield. Yobai Industries supplies this grade as DIRECT BLUE 14 LIQ., checked for concentration consistency at every batch.

Applications

• Cotton fabric and yarn exhaust dyeing
• Viscose and rayon dyeing
• Continuous padding processes (padder + steamer)
• Paper and board colouring
• Jute and canvas dyeing
• Automated liquid dosing systems

Suitable For

• Cotton (woven and knit)
• Viscose / Rayon
• Linen and Jute
• Paper and cellulosic substrates

Key Benefits

• Liquid form — pre-dispersed, no dissolution step required
• Consistent dye concentration batch to batch
• Clean medium-to-deep blue, no green or violet undertone
• Compatible with automated and metered dosing lines
• Lower process complexity vs reactive blue dyeing
• Wash fastness improvable to 4 with cationic after-treatment

Liquid Handling & Dilution Guidelines

Because Direct Blue 290 is supplied as a pre-dispersed liquid, there is no powder dissolution step. This is its main operational advantage — you add it directly to the dye bath or dilute to working concentration with water. That said, a few handling points matter. Always mix with water before adding to the bath; adding the liquid concentrate directly to a near-full bath without premixing can cause uneven strike in the first few minutes, particularly on knitwear.

For automated dosing lines, verify the concentration of the liquid against the batch TDS before setting dosing pump parameters. Concentration can vary slightly between batches — always use the batch-specific value, not a generic assumption. Shake or stir the container before use if the liquid has been stored for an extended period, as some settling can occur in liquid direct dye concentrates.