Description

Acid Brown 289 is a synthetic organic dye belonging to the acid dye class, widely recognized for its robust coloring properties and good fastness characteristics. This product is essential for achieving durable and vibrant brown shades on protein-based fibers like wool, silk, and nylon. It is a critical component for manufacturers in the textile, leather, and paper industries seeking reliable and consistent dyeing performance. The compound is supplied as a high-purity powder to ensure batch-to-batch consistency in industrial applications.

Application

• Primary dyeing and printing of wool and silk textiles.
• Coloration of nylon fibers and fabrics.
• Leather finishing for upholstery, garments, and accessories.
• Paper staining and coating for specialty packaging and decorative papers.
• Ink formulation for specific printing applications requiring acid dyes.
• Historical or restoration dyeing of protein-based materials.

Basic Information

Product Name	Acid Brown 289
CAS No.	12219-72-6
Molecular Formula	C32H24N12Na4O16S4
Molecular Weight	1088.90 g/mol
Synonyms	Acid Brown 289; C.I. Acid Brown 289; Acid Leather Brown 2GL; Acidol Brown M-BL; Amido Brown M-BL; Derma Brown GL; Elbenyl Brown B-GL; Lanasyn Brown S-2GL; Nylosan Brown N-2BL; Supranol Brown BW; Telon Brown K-2GL; Tectilon Brown 2R
EINECS	Contact for details

Quality Control

Our Acid Brown 289 is manufactured under a strict quality management system to ensure it meets the high standards required for industrial dyeing processes. Every batch is tested for key parameters including color strength, shade, solubility, and impurity profile to guarantee consistent performance and reproducibility. Certificates of Analysis (COA) detailing these specifications 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. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Brown to Dark Brown Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade	Conforms to Standard
Solubility in Water	Conforms
Heavy Metals (as Pb)	≤ 50 ppm

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