Description

Acid Brown 50 is a synthetic acid dye belonging to the azo dye class, widely recognized for its excellent dyeing properties on protein fibers. This product is valued for its ability to produce consistent, vibrant brown shades with good light and wash fastness. It is primarily used by manufacturers in the textile, leather, and paper industries for coloring wool, silk, and nylon.

Application

• Primary dyeing of wool and silk fabrics and yarns.
• Coloration of nylon fibers and textiles.
• Leather dyeing for footwear, apparel, and upholstery.
• Paper staining and tinting applications.
• Manufacture of inks and colorants.
• As a colorant for specialty coatings and polymers.

Basic Information

Product Name	Acid Brown 50
CAS No.	11075-38-0
Molecular Formula	C22H14N4Na2O8S2
Molecular Weight	556.48 g/mol
Synonyms	Acid Brown 2R; C.I. Acid Brown 50; Acid Leather Brown 2R; Acidol Brown 2R; Amacid Brown 2R; Dermacid Brown 2R; Lissamine Brown 2R; Nylosan Brown 2R; Telon Brown 2R; Acid Fast Brown 2R
EINECS	234-301-2

Quality Control

Our Acid Brown 50 is manufactured under a strict quality management system. Each batch undergoes comprehensive testing to ensure it meets high-purity standards and consistent performance specifications for color strength and shade. A Certificate of Analysis (COA) detailing purity, strength, and impurity profiles is provided with every shipment.

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
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade	Conforms to standard
Fastness Properties	To be specified per grade

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