Description

Acid Red 215 is a synthetic, water-soluble monoazo dye belonging to the acid dye class, widely recognized for its bright and vibrant red hue. This high-performance colorant is valued for its excellent affinity to protein fibers like wool, silk, and nylon, providing strong, level dyeing with good fastness properties. It is an essential material for the textile industry, leather finishing, and is also utilized in the coloration of paper, inks, and certain specialty coatings where a durable red shade is required.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and polyamide (nylon) fibers, offering good wash and light fastness.
• Leather Finishing: Used for coloring leather goods, providing rich, uniform color penetration.
• Paper Coloration: Imparts a stable red color to specialty papers, including decorative and packaging materials.
• Ink Manufacturing: Serves as a colorant for inks, particularly where water-based formulations are preferred.
• Biological Staining: May be employed in histological and microbiological staining procedures as a contrast agent.
• Polymer & Plastic Tinting: Used for mass coloration of certain polymers and plastics where color consistency is critical.

Basic Information

Product Name	Acid Red 215
CAS No.	12239-06-4
Molecular Formula	C31H21N5Na2O8S2
Molecular Weight	709.63 g/mol
Synonyms	Acid Red 215; C.I. Acid Red 215; 2-Naphthalenesulfonic acid, 7-[[4-[(2,4-diaminophenyl)azo]phenyl]azo]-1-hydroxy-3,6-disulfo-, disodium salt; Lanasyn Red 2GL; Telon Red K-2G; Nylosan Red F-2GL; Acid Leather Red D-2G; Supranol Red GW
EINECS	Contact for details

Quality Control

Our Acid Red 215 is manufactured under a stringent quality management system 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) detailing purity, heavy metal content, and other relevant specifications are provided with every shipment 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. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Red to dark red powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility in Water	Clear solution
pH (1% Solution)	6.0 - 8.0

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