Description

C.I. Acid Brown 46 is a synthetic azo dye belonging to the acid dye class, valued for its ability to produce a durable brown color on protein fibers like wool, silk, and nylon. Its primary commercial significance lies in its excellent wash and light fastness properties, making it a reliable choice for demanding textile applications. This dye is essential for manufacturers in the textile, leather, and paper industries seeking consistent, high-quality coloration for their products.

Application

• Primary dyeing of wool, silk, and other natural protein fibers.
• Coloration of synthetic polyamide fibers, including nylon.
• Leather dyeing for footwear, apparel, and upholstery.
• Paper staining and surface coloration.
• Ink formulation for specialized printing applications.
• Used in combination with other acid dyes to achieve a wide spectrum of brown shades.

Basic Information

Product Name	C.I. Acid Brown 46
CAS No.	12238-97-0
Molecular Formula	C22H16N6Na2O9S2
Molecular Weight	642.51 g/mol
Synonyms	Acid Brown 46; Acid Leather Brown 2G; Acidol Brown M-BR; Amacid Brown 2G; Airedale Brown 2G; C.I. 20195; Dermacid Brown 2G; Lissamine Brown 2G; Suracid Brown 2G; Telon Brown 2G
EINECS	Contact for details

Quality Control

Our production of C.I. Acid Brown 46 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key parameters including color strength, shade, solubility, and impurity profile. Certificates of Analysis (COA) documenting these results are provided with every shipment to support your quality assurance processes.

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 incompatible materials and sources of heat.

Specification

Item	Specification
Appearance	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	Clear solution

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