Description

Tracid Red 2Bs CAS NO 57741-47-6 is a high-performance, synthetic organic colorant belonging to the azo dye class. This product is engineered to deliver consistent, vibrant red coloration with excellent fastness properties, making it a critical component for demanding industrial applications. It is primarily utilized by manufacturers in the textile, leather, and specialty ink industries seeking reliable and cost-effective dyeing solutions.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose, and other cellulosic fibers to achieve bright red shades.
• Leather Finishing: Used in the coloration of leather goods, providing good penetration and color uniformity.
• Paper Staining: Employed for tinting paper products where specific color requirements are needed.
• Ink Formulation: A key pigment for manufacturing specialty inks, including packaging and security inks.
• Biological Staining: Potential use as a histological stain in laboratory settings (subject to specific purity grades).
• Plastics and Polymers: Can be used for mass coloration of certain plastics, depending on compatibility.

Basic Information

Product Name	Tracid Red 2Bs
CAS No.	57741-47-6
Molecular Formula	C25H20N4Na2O8S2
Molecular Weight	630.56 g/mol
Synonyms	Acid Red 2B; C.I. Acid Red 2B; C.I. 16570; Acid Leather Red 2B; Tracid Red 2B; Acid Fast Red 2B; Red 2B Acid Dye; Azo Rubine S
EINECS	Contact for details

Quality Control

Our Tracid Red 2Bs is manufactured under a stringent quality management system. Every batch is tested to ensure it meets precise specifications for color strength, shade, and purity. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical parameters is provided with each shipment to guarantee supply consistency and performance reliability for your production processes.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after initial use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	Red to Dark Red Powder
Identification (IR)	Conforms to Standard
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 3%
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.5%
Shade	Conforms to Standard
Heavy Metals (as Pb)	≤ 20 ppm

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