Description

Acid Brown 265 is a synthetic azo dye belonging to the acid dye class, widely recognized for its application in textile coloration. Its primary value lies in its ability to produce a durable brown shade with good light and wash fastness on protein fibers like wool, silk, and nylon. This dye is essential for manufacturers in the textile and leather industries seeking consistent, high-quality coloration for their products. Acid Brown 265 CAS NO 10343-57-4 is also utilized in specialized applications such as the staining of paper and biological materials.

Application

• Primary dyeing of wool, silk, and nylon textiles to achieve brown shades.
• Leather dyeing for footwear, upholstery, and accessories.
• Staining of paper products for decorative or functional purposes.
• Coloration of anodized aluminum in specialized industrial processes.
• Used as a biological stain in microscopy and laboratory research.
• Ink formulation for specialized printing applications.

Basic Information

Product Name	Acid Brown 265
CAS No.	10343-57-4
Molecular Formula	C32H24N8Na2O8S2
Molecular Weight	750.69 g/mol
Synonyms	Acid Brown 265; C.I. Acid Brown 265; Acid Leather Brown DRL; Acid Fast Brown BRL; Acidol Brown M-BRL; Amido Brown BRL; Dermacid Brown BRL; Supranol Fast Brown BRL; Telon Fast Brown BRL; Lanasyn Brown BRL; Nylosan Brown BRL
EINECS	Contact for details

Quality Control

Our Acid Brown 265 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against stringent in-house specifications for critical parameters including dye content, shade, solubility, and fastness properties. A Certificate of Analysis (COA) detailing these results is provided with every shipment to guarantee product integrity and 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.

Specification

Item	Specification
Appearance	Brown powder
Identification (IR)	Conforms to standard
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.