Description

Direct Red 83:1 is a high-performance, metallized azo dye known for its excellent light and wash fastness properties. This compound is critical for achieving durable and vibrant red colorations in demanding industrial applications. It is primarily utilized by manufacturers in the textile, leather, and paper industries seeking reliable and consistent dyeing performance.

Application

• Primary dyeing and printing of cotton, viscose, and other cellulosic fibers.
• Coloration of leather goods, providing rich, penetrating shades.
• Manufacture of colored paper and paper products.
• Used in the production of some inks and toners.
• Potential applications in the coloration of wood and other natural materials.

Basic Information

Product Name	Direct Red 83:1
CAS No.	90880-77-6
Molecular Formula	C35H25N7Na2O10S2
Molecular Weight	837.78 g/mol
Synonyms	Direct Fast Red 8BL; C.I. Direct Red 83:1; Direct Red 8BLL; Direct Red 8BL; Direct Red 8B; Pontamine Fast Red 8BL; Atul Direct Fast Red 8BL; Pyrazol Fast Red 8BL; Airedale Red 8BL; Chlorazol Fast Red 8BL
EINECS	Contact for details

Quality Control

Our Direct Red 83:1 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against rigorous internal specifications for key parameters such as color strength, shade, solubility, and impurity profile. Certificates of Analysis (COA) documenting these results are available upon request to support your quality assurance protocols.

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 incompatible materials and sources of heat.

Specification

Item	Specification
Appearance	Reddish-brown powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to standard
Moisture Content	≤ 5.0%
Water Solubility	Conforms to standard
Ash Content	≤ 1.0%

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