Description

Direct Yellow 142 is a high-performance, water-soluble azo dye belonging to the direct dye class, valued for its strong affinity to cellulosic fibers. This product is engineered to deliver excellent light and wash fastness properties, ensuring color durability in demanding applications. It is primarily utilized by manufacturers in the textile, paper, and leather industries for dyeing and printing processes where consistent, vibrant yellow shades are required.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose, rayon, and other cellulosic fibers to achieve bright yellow hues.
• Paper Coloring: Used in the production of colored papers, tissues, and paperboard where good bleed resistance is needed.
• Leather Finishing: Imparts color to leather goods, including footwear, bags, and upholstery.
• Ink Formulation: A component in the manufacture of inks for flexographic and other printing applications.
• Wood Staining: Employed for coloring wood and wood-based products.
• Biological Staining: Potential use as a histological stain in laboratory settings (subject to specific grade purity).

Basic Information

Product Name	Direct Yellow 142
CAS No.	71902-08-4
Molecular Formula	C40H26N10Na4O13S4
Molecular Weight	1128.93 g/mol
Synonyms	Direct Fast Yellow GC; C.I. Direct Yellow 142; Direct Yellow GC; Amanil Fast Yellow GC; Atul Direct Fast Yellow GC; Pyrazol Yellow GC; Sirius Supra Yellow GC; Dinamine Fast Yellow GC
EINECS	Contact for details

Quality Control

Our Direct Yellow 142 is manufactured under a stringent quality management system. Each batch is tested to ensure consistent shade, strength, solubility, and fastness properties. Certificates of Analysis (COA) detailing purity, physical properties, and performance characteristics are provided to guarantee it meets the specifications required for industrial dyeing and printing applications.

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). This product is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Yellow to Brownish-Yellow Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.5%
Shade	Conforms to Standard
Solubility in Water	Complete
Fastness to Light	≥ 5-6 (Standard Scale)
Fastness to Washing	≥ 4-5 (Standard Scale)

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