Description

Direct Yellow 147 is a synthetic, water-soluble azo dye belonging to the direct dye class, known for its bright and substantive yellow color. It is valued for its excellent affinity to cellulosic fibers like cotton and rayon, providing good wash and light fastness properties. This dye is primarily used in the textile industry for dyeing and printing, as well as in the paper and leather industries for coloration applications.

Application

• Textile Dyeing: Primary application for dyeing cellulosic fibers such as cotton, viscose, and rayon in exhaust and continuous dyeing processes.
• Textile Printing: Used in printing pastes for creating yellow patterns and designs on fabric.
• Paper Coloring: Imparts a stable yellow color to various types of paper, including specialty and packaging papers.
• Leather Finishing: Applied in the dyeing of leather goods to achieve consistent and vibrant yellow shades.
• Ink Formulation: A component in the manufacture of inks for specific printing applications.

Basic Information

Product Name	Direct Yellow 147
CAS No.	71838-49-8
Molecular Formula	C34H24N8Na4O16S4
Molecular Weight	1088.89 g/mol
Synonyms	Direct Fast Yellow 7GFF; C.I. Direct Yellow 147; Direct Yellow 7GFF; Direct Yellow 7G; Pontamine Fast Yellow 7GFF; Sirius Supra Yellow 7GFF; Solophenyl Yellow 7GFF; Benzanil Yellow 7GFF
EINECS	Contact for details

Quality Control

Our Direct Yellow 147 is manufactured under strict quality management systems to ensure batch-to-batch consistency and performance. Quality is verified through comprehensive testing against established specifications for color strength, shade, solubility, and fastness properties. A Certificate of Analysis (COA) detailing purity and key parameters is provided with every shipment to guarantee compliance with your technical 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 incompatible materials. The product is light-sensitive and should be stored away from direct light exposure.

Specification

Item	Specification
Appearance	Yellow to Brownish-Yellow Powder
Identification	Conforms (IR / HPLC)
Color Strength	100 ± 3% (Standard)
Shade	Conforms to Standard
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Solubility in Water	Conforms
Fastness to Washing	≥ 4 (ISO 105-C03)
Fastness to Light	≥ 5 (ISO 105-B02)

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