Description

C.I. Direct Red 207 is a high-performance, water-soluble direct dye belonging to the azo chemical class. This product is valued for its strong affinity to cellulosic fibers, providing excellent build-up and good wet fastness properties. It is primarily used in the textile industry for dyeing cotton, viscose, and other regenerated cellulose materials. Our supply ensures consistent color strength and batch-to-batch reliability for industrial applications.

Application

• Textile Dyeing: Primary application for exhaust and continuous dyeing of cotton, viscose, rayon, and linen fabrics.
• Paper Coloring: Used for tinting and dyeing of paper and paperboard products.
• Leather Finishing: Imparts color to leather goods in the tanning industry.
• Ink Manufacturing: Serves as a colorant for certain types of inks and coatings.
• Biological Staining: Potential use as a histological stain in laboratory settings.
• Craft and Specialty Dyes: Suitable for use in artisanal and craft dyeing applications.

Basic Information

Product Name	C.I. Direct Red 207
CAS No.	12731-56-5
Molecular Formula	C29H19N7Na2O8S2
Molecular Weight	719.67 g/mol
Synonyms	Direct Red 207; C.I. 28160; Direct Fast Scarlet 4BS; Pontamine Scarlet 4BS; Sirius Scarlet 4BS; Direct Scarlet 4BS; Direct Scarlet BS; Atul Direct Scarlet 4BS
EINECS	Contact for details

Quality Control

Our production of C.I. Direct Red 207 adheres to stringent quality management protocols to ensure product consistency and performance. Each batch is tested for critical parameters including color strength, shade, solubility, and impurity profile. Certificates of Analysis (COA) documenting these results are available upon request to support your quality assurance and regulatory needs.

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	≤ 0.5%
Shade	Conforms to standard
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.