Direct Black 19 liquid

High-solubility liquid direct dye for cotton, viscose, blended fabrics, paper and specialty finishing. Lab-tested, consistent batch-to-batch fastness.

Why choose our Direct Black 19 liquid?

• Ready-to-dilute aqueous concentrate providing even exhaustion and brilliant deep black shades on cellulosic fibers.
• Strict QC: batch COA & shade benching available on request — reduces lot-to-lot variance and re-dyeing risks.
• Technical support & lab sampling: we provide pilot scale recipes for pad-dry, exhaust and continuous processes.
• Compatibility: works well with standard leveling agents and common auxiliaries used in cotton and viscose dyeing.

Application

use for Ink,Textile printing,Paper,Paints,Plastic,Jute.

Quick use guidance

1. Prepare pre-dye bath: dilute concentrate according to the TDS; maintain recommended liquor ratio.
2. Auxiliaries: use leveling agent and Glauber’s salt or sodium sulfate (as per lab recipe) for even exhaustion.
3. Temperature: follow pilot recipe — many cotton processes use 60–95°C profiles depending on auxiliaries.
4. Post-treatment: rinse thoroughly and apply recommended fixing/softening to improve fastness.

Technical Specifications

Product Name: Direct Black 19 liquid

C.I. No.: 35255

CAS No.: 6428-31-5

Molecular Formula: C34H27N13Na2O7S2

Molecular Weight: 839.77

Shade: black liquid

Package

25KG/DRUM.

Safety, storage & compliance

Handle in accordance with available Safety Data Sheet (SDS). Store in sealed containers away from direct sunlight and extreme temperatures. Consult SDS for PPE, first-aid and disposal guidelines.

Note: The data contained here are based on our current knowledge and experience. It is the responsibility of user to test our products before the final application.