Description

Acid Red 26:2 is a synthetic, water-soluble azo dye belonging to the acid dye class, identified by CAS No. 8004-47-5. This high-performance colorant is valued for its strong affinity to protein fibers and polyamide substrates, delivering vibrant, wash-fast shades. It is primarily utilized by manufacturers in the textile, leather, and paper industries seeking reliable and consistent coloration for their products.

Application

• Textile Dyeing: Primary application for dyeing protein fibers such as wool, silk, and nylon, providing excellent color yield and fastness properties.
• Leather Finishing: Used for coloring leather goods, offering good penetration and uniform shades on tanned hides.
• Paper Coloring: Employed in the production of colored papers, tissues, and specialty packaging materials.
• Ink Formulation: A component in the manufacture of inks for various printing applications, including flexographic and inkjet.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Cosmetic Additive: Used in limited, approved applications for coloring soaps and other non-food contact products.

Basic Information

Product Name	Acid Red 26:2
CAS No.	8004-47-5
Molecular Formula	C18H14N4Na2O7S2
Molecular Weight	516.43 g/mol
Synonyms	Acid Red 26:2; C.I. Acid Red 26:2; Acid Leather Red D; Acid Leather Red 2B; Acid Leather Red G; Acid Leather Red R; Acid Leather Red S; Naphthalene Scarlet 4R; Acid Fast Red A
EINECS	Contact for details

Quality Control

Our Acid Red 26:2 is manufactured under a stringent quality management system. Every batch is tested to ensure consistent performance in color strength, solubility, and fastness properties. While this product is typically supplied to industrial grade specifications, we can provide material that meets specific buyer requirements. A detailed Certificate of Analysis (COA) documenting purity, shade, and physical parameters is available for each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent caking or quality degradation.

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.