Description

C.I.Acid Red 263 is a synthetic acid dye belonging to the azo chemical class, identified by CAS No. 12239-09-7. It is valued for its strong, vibrant red color and good fastness properties, making it a critical component for achieving consistent and durable coloration. This product is essential for manufacturers in the textile, leather, and specialty ink industries who require reliable and high-performance red dyes for their processes.

Application

• Textile Dyeing: Primarily used for dyeing protein fibers like wool, silk, and nylon, providing excellent color yield and wash fastness.
• Leather Finishing: Applied in the dyeing of leather goods, including footwear, apparel, and upholstery, to impart a rich red hue.
• Ink Manufacturing: Serves as a colorant in the formulation of specialty inks, including those for pens, markers, and security printing.
• Paper Staining: Used for coloring paper products where a specific shade of red is required.
• Biological Staining: May find application as a histological stain in laboratory settings for microscopic analysis.
• Plastics and Polymers: Can be used to color certain types of plastics and synthetic materials.

Basic Information

Product Name	C.I.Acid Red 263
CAS No.	12239-09-7
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Acid Red 263; C.I. 18221; Acid Leather Red 2B; Acid Fast Red 2B; Acid Brilliant Red 2B; Nylosan Red F-2B; Telon Red F-2B; Supranol Red 2B
EINECS	Contact for details

Quality Control

Our C.I.Acid Red 263 is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise color strength, shade, and purity specifications. Certificates of Analysis (COA) documenting key parameters such as assay, solubility, and fastness properties are available upon request to support your quality assurance protocols.

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.

Specification

Item	Specification
Appearance	Red to dark red powder
Identification	Conforms (IR / HPLC)
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade	Conforms to standard
Fastness Properties	Contact for details

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