Description

Acid Brown 189 is a synthetic acid dye belonging to the azo dye class, identified by CAS No. 61724-15-0. It is valued for its ability to impart a durable brown color with good fastness properties on various substrates. This dye is primarily used in industrial applications where consistent color quality and performance are critical. Its properties make it a key component for manufacturers requiring reliable and efficient brown dyeing solutions.

Application

• Primary dyeing of wool, silk, and nylon fibers in the textile industry.
• Leather dyeing for footwear, upholstery, and accessories.
• Coloration of paper and specialty papers.
• As a colorant for wood staining and coatings.
• Ink formulation for specific printing applications.
• Potential use in the dyeing of other synthetic polyamide materials.

Basic Information

Product Name	Acid Brown 189
CAS No.	61724-15-0
Molecular Formula	C32H24N8Na2O8S2
Molecular Weight	774.74 g/mol
Synonyms	Acid Brown G; C.I. Acid Brown 189; Acid Leather Brown G; Brown 189; Acid Fast Brown G; Lanasyn Brown S-GL; Telon Brown G; Acidol Brown M-GL
EINECS	Contact for details

Quality Control

Our Acid Brown 189 is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise color strength, shade, and purity specifications. Certificates of Analysis (COA) documenting key parameters such as assay, solubility, and fastness properties are available upon request to 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent absorption of atmospheric moisture, which can affect product performance.

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
Solubility in Water	Conforms

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