Description

C.I.Acid Red 209 is a high-performance synthetic dye belonging to the acid dye class, valued for its bright red hue and strong affinity for protein-based fibers. Its primary commercial value lies in providing excellent color fastness and level dyeing properties, which are critical for consistent, high-quality results in industrial applications. This product is essential for manufacturers in the textile, leather, and paper industries seeking reliable and vibrant coloration.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and nylon fibers, providing excellent wash and light fastness.
• Leather Finishing: Used for coloring leather goods, offering deep, uniform penetration and rich color.
• Paper Coloration: Employed in the production of specialty colored papers and paper products.
• Ink Manufacturing: Serves as a colorant for inks, particularly where acid-stable pigments are required.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Plastics and Polymers: Can be used for tinting certain types of plastics and synthetic materials.

Basic Information

Product Name	C.I.Acid Red 209
CAS No.	12239-04-2
Molecular Formula	C32H21N5Na2O8S2
Molecular Weight	713.65 g/mol
Synonyms	Acid Red 209; C.I. 18167; Acid Leather Red BG; Nylosan Red F-3GL; Telon Red F3GL; Acid Fast Red A; Lissamine Red 3B; Acid Brilliant Red 3B
EINECS	Contact for details

Quality Control

Our C.I.Acid Red 209 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against rigorous internal specifications for color strength, shade, solubility, and impurity profiles. While not typically produced to pharmacopeial standards, our industrial-grade material is ideal for demanding textile and leather applications. A Certificate of Analysis (COA) detailing purity and key physical-chemical parameters is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong oxidizing agents. The product is light-sensitive; prolonged exposure to direct light should be avoided to prevent color degradation.

Specification

Item	Specification
Appearance	Dark Red Powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (Standard)
Shade	Conforms to Standard
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
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.