Description

Acid Brown 434 is a synthetic organic dye belonging to the acid dye class, widely recognized for its excellent affinity to protein fibers like wool, silk, and nylon. Its primary value lies in providing durable, wash-fast brown shades with good leveling properties and lightfastness, making it a reliable choice for consistent coloration. This dye is essential for manufacturers in the textile, leather, and paper industries seeking high-performance colorants for their products.

Application

• Primary dyeing of wool, silk, and polyamide (nylon) fibers in the textile industry.
• Coloration of leather goods, providing rich and uniform brown tones.
• Dyeing of paper and specialty papers for decorative or packaging purposes.
• Used in the formulation of inks for specific marking and printing applications.
• Potential use in the coloration of anodized aluminum and other specialty surfaces.

Basic Information

Product Name	Acid Brown 434
CAS No.	126851-40-9
Molecular Formula	C32H20N4Na4O16S4
Molecular Weight	996.78 g/mol
Synonyms	Acid Brown 434; C.I. Acid Brown 434; Acid Leather Brown 2R; Acidol Brown M-BR; Amacid Brown 2R; Atul Acid Brown 2R; Derma Fur Brown 2R; Duasyn Acid Brown 434; Lanasyn Brown S-2R; Nylosan Brown E-2R; Sandolan Brown E-2R; Supranol Brown 2R; Telon Brown 2R
EINECS	Contact for details

Quality Control

Our Acid Brown 434 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Each lot undergoes comprehensive testing for key parameters including dye content, shade, strength, and solubility. A Certificate of Analysis (COA) documenting these results is provided with every shipment to guarantee compliance with your specifications.

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 (Dye Content)	≥ 95%
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade	Conforms to standard
Solubility in Water	Conforms

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