Direct Black 19 | CAS 6428-31-5 Manufacturer & Supplier in China

Product Overview

Direct Black 19 (CAS 6428-31-1) is a versatile water-soluble anionic dye belonging to the trisazo chemical class. As a leading China manufacturer and supplier within the Dyestuffs and Pigments sector, Conscientia Industrial provides high-purity Direct Black 19 optimized for superior exhaustion and leveling properties. This high-performance dye is widely utilized in the textile industry for dyeing cotton, viscose, and wool, as well as in the manufacturing of leather, paper, and high-quality inkjet inks, ensuring deep black tones and excellent lightfastness for global industrial applications.

Technical Specifications

• Product Name: Direct Black 19

• CAS Number: 6428-31-1

• Purity (Strength): 100% - 200% (Standardization available)

• Molecular Formula: C34H30N13NaO7S2

• Molecular Weight: 819.81

• Appearance: Black uniform powder or grain

• Shade: Similar to standard (Greenish or Redish black available)

• Light Fastness: 4-5

• Solubility: Excellent solubility in water

• Country of Origin: China

• Pricing: Competitive price based on quantity

• Currency: USD

• Chemical Structure:

Why Partner with Conscientia Industrial

• Specialized Dye Synthesis: Expert in trisazo dye chemistry, ensuring high color strength and minimal batch-to-batch variation.

• Advanced Quality Control: Every batch of Direct Black 19 is rigorously tested for shade, strength, and solubility to meet international textile and industrial standards.

• Documentation and Compliance: We provide comprehensive technical dossiers, including Certificate of Analysis (COA), MSDS, and TDS (Technical Data Sheet).

• Scalable Industrial Supply: Reliable production capacity from our China facility to support large-scale textile mills and chemical distributors.

• As a leading China manufacturer, we provide Direct Black 19 CAS 6428-31-1 with factory-direct pricing.

Packaging & Storage

• Standard Packaging: 25kg iron drum, fiber drum, or woven bag with internal PE lining.

• Storage Conditions: Store in a cool, dry, and well-ventilated warehouse. Keep the container tightly sealed and away from moisture and direct sunlight.

• Safety Handling: Professional industrial dye. Wear protective equipment during handling to avoid inhalation and skin contact.

• Our logistics team ensures safe delivery of Direct Black 19 CAS 6428-31-1 by courier / air / sea.

Request a Quote & COA for Direct Black 19 CAS 6428-31-1 Today.