Description

Acidbrown19 is a synthetic organic dye belonging to the azo dye class, identified by CAS No. 12234-73-0. It is valued for its ability to impart a consistent and durable brown coloration to various substrates, making it a critical component in industrial coloring processes. This product is primarily needed by manufacturers in the textile, leather, and paper industries seeking reliable and efficient dyeing agents.

Application

• Textile Dyeing: Used for dyeing wool, silk, and nylon fibers to achieve a range of brown shades.
• Leather Finishing: Applied in the coloring of leather goods such as footwear, bags, and upholstery.
• Paper Coloration: Employed in the production of colored paper and paperboard for packaging and specialty papers.
• Ink Formulation: Serves as a colorant in the manufacture of inks for various printing applications.
• Wood Staining: Used to stain wood products to enhance their aesthetic appeal.
• Biological Staining (Research Grade): Potential use as a histological stain in laboratory settings for microscopic analysis.

Basic Information

Product Name	Acidbrown19
CAS No.	12234-73-0
Molecular Formula	C20H12N4Na2O7S2
Molecular Weight	534.43 g/mol
Synonyms	Acid Brown 19; C.I. Acid Brown 19; Acid Leather Brown D; Acidol Brown M-BL; Amacid Brown M-BL; Derma Fur Brown BL; Lissamine Brown B; Supranol Fast Brown BL; Telon Fast Brown ANL; 2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-3-[(4-nitrophenyl)azo]-6-(phenylazo)-, disodium salt
EINECS	235-447-5

Quality Control

Our Acidbrown19 is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for color strength, purity, and solubility. Certificates of Analysis (COA) documenting these results 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). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Brown powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
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.