Description

Direct Red 212 is a synthetic azo dye belonging to the direct dye class, known for its strong affinity to cellulosic fibers. Its primary value lies in providing a bright, vivid red color with excellent wash and light fastness properties on cotton, viscose, and other natural materials. This dye is essential for manufacturers in the textile industry seeking reliable and cost-effective coloration for fabrics, yarns, and garments. It is also utilized in the paper and leather industries for surface dyeing applications.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose, rayon, and other cellulosic fibers in exhaust and continuous dyeing processes.
• Paper Coloring: Used for surface coloring and tinting of paper products, including specialty papers and packaging materials.
• Leather Finishing: Imparts color to leather goods, providing a uniform and durable finish.
• Ink Formulation: Serves as a colorant in the production of inks for various printing applications.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.

Basic Information

Product Name	Direct Red 212
CAS No.	12222-45-6
Molecular Formula	C35H25N7Na2O10S2
Molecular Weight	813.78 g/mol
Synonyms	C.I. Direct Red 212; Direct Fast Scarlet 4BS; Direct Scarlet 4BS; Pontamine Scarlet 4BS; Aizen Direct Scarlet 4BH; Atul Direct Scarlet 4BS; Benzo Scarlet 4BS; Dinamine Scarlet 4BS; Sirius Scarlet 4BS; Solar Scarlet 4BS
EINECS	Contact for details

Quality Control

Our Direct Red 212 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against key parameters including color strength, shade, solubility, and impurity profile. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and conformance to specification is provided with every shipment. We adhere to relevant industry standards and can support compliance documentation as required.

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%
pH (1% Solution)	6.0 - 8.0
Fastness Properties	Contact for details

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