Description

Acid Red 289 is a synthetic, water-soluble azo dye belonging to the acid dye class, known for its bright red hue and good fastness properties. It is a critical component for imparting vibrant and durable color to protein-based fibers like wool, silk, and nylon, as well as for specialty applications in inks and coatings. This high-performance colorant is essential for manufacturers in the textile, leather finishing, and specialty chemical industries seeking reliable and consistent coloration. The compound is supplied under the CAS registry number 12220-28-9.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and polyamide (nylon) fibers, offering good leveling and wash fastness.
• Leather Finishing: Used for coloring leather goods, providing rich, uniform shades with good adhesion.
• Ink Formulation: A key pigment for manufacturing inks, including those for ballpoint pens, stamp pads, and other writing instruments.
• Paper Coloring: Employed in the production of specialty colored papers and paper products.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Industrial Coatings: Incorporated into coatings and paints where a specific red shade is required.

Basic Information

Product Name	Acid Red 289
CAS No.	12220-28-9
Molecular Formula	C22H14N4Na2O7S2
Molecular Weight	556.48 g/mol
Synonyms	Acid Brilliant Red 3B; C.I. Acid Red 289; Acid Leather Red 3B; Nylosan Red F-3B; Supranol Red 3BW; Telon Red F-3B; Acid Red 3B; 2,7-Naphthalenedisulfonic acid, 5-[(4-chloro-2-nitrophenyl)azo]-4-hydroxy-3-[(2-methoxyphenyl)azo]-, disodium salt
EINECS	Contact for details

Quality Control

Our Acid Red 289 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against stringent in-house specifications for critical parameters including color strength, shade, solubility, and impurity profile. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and test results is provided with every shipment to guarantee compliance with your application requirements.

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
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.5%
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 50 ppm

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