Description

Direct Scarlet B is a synthetic azo dye belonging to the class of direct dyes, valued for its strong affinity to cellulosic fibers like cotton and rayon. Its primary commercial value lies in providing a bright, vivid scarlet red shade with good wash fastness properties in textile dyeing applications. This product is essential for manufacturers in the textile, leather, and paper industries seeking consistent and reliable colorants for their dyeing and printing processes.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose rayon, and other cellulosic fibers to achieve a bright scarlet red color.
• Leather Coloring: Used in the dyeing of leather goods, providing rich and uniform coloration.
• Paper Staining: Employed for coloring paper products, including specialty papers and packaging materials.
• Ink Formulation: A component in the manufacture 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 Scarlet B
CAS No.	3530-19-6
Molecular Formula	C32H21N5Na2O8S2
Molecular Weight	729.65 g/mol
Synonyms	Direct Scarlet B; C.I. Direct Red 23; Pontamine Scarlet B; Benzo Scarlet B; Amanil Scarlet B; Sirius Scarlet B; Chlorazol Scarlet B; Diazol Scarlet B
EINECS	222-557-1

Quality Control

Our Direct Scarlet B 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 Certificate of Analysis (COA) detailing these specifications is provided with every shipment to guarantee compliance with your technical requirements.

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 ignition.

Specification

Item	Specification
Appearance	Reddish-brown powder
Identification (IR)	Conforms to standard
Assay (Colorant Content)	≥ 95%
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade	Conforms to standard sample
Solubility in Water	Conforms

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