Description

Disperse Blue 181 is a high-performance synthetic organic dye belonging to the anthraquinone chemical class. It is valued for its excellent color fastness, thermal stability, and bright blue hue, making it a critical component in demanding coloration processes. This product is primarily utilized by manufacturers in the textile and polymer industries seeking reliable and consistent dyeing results. We supply Disperse Blue 181 CAS NO 71872-42-9 to meet the stringent quality requirements of global industrial applications.

Application

• Synthetic Fiber Dyeing: Primary application for dyeing polyester (PET), acetate, and nylon fibers, offering excellent wash and light fastness.
• Plastics and Masterbatch Coloring: Used for coloring engineering plastics, polycarbonate, and polystyrene to achieve uniform and stable blue shades.
• Inkjet Ink Formulation: Employed in the production of specialty inks for textile printing due to its fine dispersion properties.
• Automotive Interiors: Suitable for dyeing synthetic fabrics and plastics used in car seats, dashboards, and trim.
• Sportswear and Outdoor Fabrics: Ideal for high-performance apparel where color durability against sweat, washing, and UV exposure is essential.
• Transfer Printing: Used in the manufacture of dyes for heat-transfer paper applied to synthetic textiles.

Basic Information

Product Name	Disperse Blue 181
CAS No.	71872-42-9
Molecular Formula	C20H17N3O5S
Molecular Weight	411.43 g/mol
Synonyms	1-Amino-4-hydroxy-2-phenoxy-9,10-anthraquinone-3-carboxylic Acid Anilide; C.I. Disperse Blue 181; Disperse Navy Blue S-2GL; Samaron Navy Blue HFRL; Foron Navy S-2GL; Dianix Navy Blue N-BG; Kayalon Polyester Navy Blue BL-SE; Terasil Navy Blue GRL
EINECS	Contact for details

Quality Control

Our Disperse Blue 181 is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including chromatographic purity analysis and strength assessment, to ensure it meets precise coloristic and chemical specifications. Certificates of Analysis (COA) documenting key parameters such as purity, shade, and dispersion stability are 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). Keep away from heat sources and incompatible materials. The product is light-sensitive and should be stored away from direct light exposure to prevent degradation.

Specification

Item	Specification
Appearance	Dark blue powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Purity (HPLC)	≥ 98.0%
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%
Dispersion Stability	Passes test
pH of Aqueous Extract	6.0 - 8.0

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