Description

Acid Brown 97 is a synthetic organic dye belonging to the acid dye class, widely recognized for its application in textile coloration. This product is valued for its ability to produce consistent, durable brown shades on protein fibers like wool, silk, and nylon, as well as in leather dyeing. It is a critical component for manufacturers in the textile, leather, and specialty paper industries seeking reliable and efficient coloring agents. The compound is supplied as a high-purity powder to ensure optimal performance and batch-to-batch consistency in industrial processes.

Application

• Primary dyeing of wool, silk, and other protein-based textiles.
• Coloration of nylon fibers in the synthetic textiles sector.
• Leather dyeing for footwear, apparel, and upholstery.
• Staining and coloring of specialty papers and paper products.
• As a colorant in the manufacture of inks and toners.
• Used in research and development laboratories for analytical and experimental purposes.

Basic Information

Product Name	Acid Brown 97
CAS No.	108347-99-5
Molecular Formula	C32H24N8Na4O16S4
Molecular Weight	1048.86 g/mol
Synonyms	Acid Brown 97; C.I. Acid Brown 97; Acid Leather Brown D; Acid Fast Brown BRL; Brown 97; Lanasyn Brown S-RBL; Telon Brown K-3R; Acid Dye Brown 97; Acidol Brown M-BRL
EINECS	Contact for details

Quality Control

Our Acid Brown 97 is manufactured under a stringent quality management system to ensure it meets the high standards required for industrial dyeing applications. Every batch is tested for critical parameters including color strength, shade, solubility, and impurity profile to guarantee performance and consistency. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and conformance to specification is provided with each shipment and is available upon request.

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 sealed when not in use to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Brown Powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 95%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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