Description

Acid Brown 161 is a synthetic acid dye belonging to the azo chemical class, valued for its strong affinity to protein fibers like wool, silk, and nylon. Its primary commercial value lies in providing durable, wash-fast brown shades with excellent leveling properties in textile dyeing applications. This dye is essential for manufacturers in the textile, leather, and paper industries seeking consistent coloration for their products.

Application

• Primary dyeing of wool, silk, and nylon textiles to achieve various brown hues.
• Leather finishing and coloration for footwear, apparel, and upholstery.
• Paper staining and tinting for specialty packaging and decorative papers.
• Dyeing of polyamide-based fibers and blends in the carpet industry.
• As a colorant for anodized aluminum in specific industrial applications.
• Used in the formulation of inks for non-food contact materials.

Basic Information

Product Name	Acid Brown 161
CAS No.	61724-13-8
Molecular Formula	C32H21N5Na2O8S2
Molecular Weight	721.65 g/mol
Synonyms	Acid Brown G; Acid Leather Brown G; C.I. Acid Brown 161; Acid Fast Brown G; Brown G (Acid Dye); Acidol Brown M-GL; Telon Brown G; Dermacid Brown G; Supranol Brown G; Nylosan Brown E-GL
EINECS	Contact for details

Quality Control

Our Acid Brown 161 is manufactured under a stringent quality management system. Every batch undergoes comprehensive testing for key parameters including dye content, shade, solubility, and fastness properties to ensure it meets the high standards required for industrial dyeing processes. A Certificate of Analysis (COA) detailing purity, strength, and physical specifications is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from incompatible materials and moisture to maintain product integrity and shelf life.

Specification

Item	Specification
Appearance	Brown powder or granules
Identification (IR)	Conforms to standard
Assay (Dye Content)	≥ 95%
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Shade	Matches standard
Fastness Properties (Light, Wash)	Grade 4-5 (Typical)

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