Description

Direct Red 89 is a synthetic, water-soluble azo dye belonging to the direct dye class, widely recognized for its strong affinity to cellulosic fibers. Its primary value lies in providing a vibrant, durable red coloration with excellent wash-fastness properties on cotton, viscose, and other natural materials. This dye is essential for manufacturers in the textile industry seeking efficient and cost-effective coloring solutions for yarns, fabrics, and garments.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose, rayon, and other cellulosic fibers in exhaust and continuous dyeing processes.
• Paper Coloring: Used for tinting paper products, including specialty papers, packaging materials, and decorative items.
• Leather Processing: Employed in the dyeing of leather goods to achieve consistent and deep red shades.
• Ink Formulation: A colorant component in the manufacture of inks for various printing applications.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Craft and Educational Dyes: Suitable for use in educational kits and craft projects involving fabric or paper.

Basic Information

Product Name	Direct Red 89
CAS No.	12217-67-3
Molecular Formula	C29H19N5Na2O8S2
Molecular Weight	695.66 g/mol
Synonyms	Direct Fast Scarlet 4BS; C.I. Direct Red 89; Direct Scarlet 4BS; Pontamine Scarlet 4BS; Direct Scarlet BS; Amanil Fast Scarlet 4BS; Atul Direct Fast Scarlet 4BS; Dinamine Scarlet 4BS; Sirius Scarlet 4BS; Solar Scarlet 4BS
EINECS	Contact for details

Quality Control

Our production of Direct Red 89 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Every lot is tested for critical parameters including color strength, shade, solubility, and impurity profile. Certificates of Analysis (COA) documenting purity, physical properties, and conformance to agreed specifications are provided with each shipment and are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Reddish-brown powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade	Conforms to standard
Solubility in Water	Conforms
pH (1% Solution)	6.0 - 8.0

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.