Description

Direct Yellow 28 is a synthetic, water-soluble azo dye belonging to the direct dye class, known for its strong affinity for cellulosic fibers. This product is valued for its ability to produce bright, level shades of yellow with good wash and light fastness properties, making it a reliable choice for industrial coloring processes. It is primarily used by manufacturers in the textile, paper, and leather industries seeking efficient and consistent dyeing solutions.

Application

• Textile Dyeing: Primary application for dyeing cotton, rayon, linen, and other cellulosic fibers in exhaust and continuous dyeing processes.
• Paper Coloring: Used for tinting and coloring paper products, including packaging materials, tissues, and specialty papers.
• Leather Finishing: Employed in the dyeing of leather goods to achieve uniform yellow hues.
• Ink Formulation: A colorant component in the manufacture of certain inks for non-critical applications.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.

Basic Information

Product Name	Direct Yellow 28
CAS No.	8005-72-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Direct Yellow G; C.I. Direct Yellow 28; Direct Fast Yellow G; Amanil Fast Yellow G; Atlantic Direct Fast Yellow G; Chlorazol Yellow G; Diazol Yellow G; Diphenyl Yellow G; Direct Yellow GG; Paper Yellow G; Pyrazol Yellow G
EINECS	Contact for details

Quality Control

Our Direct Yellow 28 is produced under a stringent quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against key parameters including color strength, shade, solubility, and impurity profile to meet industrial dye standards. A Certificate of Analysis (COA) detailing specific test results is provided with every shipment.

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). Due to its hygroscopic nature, the container must be kept tightly sealed after use to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	Yellow to Brownish-Yellow Powder
Identification	Conforms (IR / TLC)
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content	≤ 1.0%
Shade	Conforms to Standard

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