Description

C.I.Acid Brown 126 is a synthetic acid dye belonging to the azo chemical class, widely recognized for its robust coloring properties. It is valued for its excellent light and wash fastness, providing consistent and reliable coloration in demanding industrial processes. This dye is primarily utilized by manufacturers in the textile, leather, and paper industries seeking durable brown shades.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and nylon fibers to achieve various shades of brown with good fastness properties.
• Leather Finishing: Used in the coloration of leather goods, providing uniform and penetrating color for products like upholstery, footwear, and accessories.
• Paper Staining: Employed in the production of specialty papers, including decorative and packaging materials, requiring color consistency.
• Ink Formulation: A component in the manufacture of inks for specific printing applications where acid dye properties are required.
• Biological Staining (Histology): Potential use as a stain in microscopic analysis for biological tissues, depending on the purity grade.

Basic Information

Product Name	C.I.Acid Brown 126
CAS No.	12217-25-3
Molecular Formula	C32H24N8Na4O16S4
Molecular Weight	1032.82 g/mol
Synonyms	Acid Brown 126; C.I. 12217-25-3; Acid Leather Brown 2R; Acid Fast Brown 2R; Acid Brown R; Acid Brown 2R; Acidol Brown 2R; Amido Brown 2R
EINECS	Contact for details

Quality Control

Our production of C.I.Acid Brown 126 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key parameters including color strength, shade, solubility, and impurity profiles. 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.

Specification

Item	Specification
Appearance	Brown powder or granules
Identification (IR)	Conforms to standard
Assay (Color Strength)	≥ 95% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade	Within agreed tolerance
Solubility in Water	Conforms

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