Description

Acid Red 199 CAS NO 61724-34-3 is a high-performance, water-soluble azo dye belonging to the acid dye class. It is valued for its bright and vivid red color, offering excellent color fastness and stability in various applications. This dye is primarily used in the textile industry for dyeing and printing protein fibers like wool, silk, and nylon, as well as in the coloration of leather, paper, and inks.

Application

• Dyeing of natural protein fibers such as wool and silk.
• Coloration of synthetic polyamide fibers, including nylon for apparel and carpets.
• Leather finishing and dyeing for footwear, upholstery, and accessories.
• Paper coloration for specialty and decorative papers.
• Manufacturing of inks for writing, printing, and stamping.
• Biological staining applications in laboratory and research settings.

Basic Information

Product Name	Acid Red 199
CAS No.	61724-34-3
Molecular Formula	C46H30N7Na3O13S3
Molecular Weight	1047.0 g/mol
Synonyms	Acid Red 199; C.I. Acid Red 199; Lanasyn Red 2G; Nylosan Red F-2G; Supranol Red 3BW; Telon Red K-2G; Acid Leather Red 2G; 2,7-Naphthalenedisulfonic acid, 4-hydroxy-3-[[2-methoxy-5-[(2-methylphenyl)azo]phenyl]azo]-, trisodium salt
EINECS	262-983-1

Quality Control

Our Acid Red 199 is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure consistent purity, color strength, and application performance. A Certificate of Analysis (COA) detailing key parameters such as assay, shade, solubility, and impurity profile is provided with every shipment to guarantee supply reliability and quality assurance.

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	Red to dark red powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 95%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Conforms
pH (1% Solution)	6.0 - 8.0
Ash Content	≤ 1.0%

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