Description

Direct Yellow 127 is a high-performance, water-soluble azo dye belonging to the direct dye class, identified by CAS No. 12222-68-3. It is valued for its strong affinity to cellulosic fibers, providing excellent wash and light fastness properties essential for durable coloration. This dye is a critical component for manufacturers in the textile and paper industries seeking reliable and vibrant yellow hues for their products.

Application

• Textile Dyeing: Primary application for dyeing cotton, viscose, rayon, and other cellulosic fibers, offering good exhaustion and leveling.
• Paper Coloring: Used in the mass coloration of paper and paperboard to achieve consistent, bright yellow shades.
• Leather Finishing: Employed in the dyeing of leather goods where deep, penetrating color is required.
• Ink Formulation: A pigment source in the manufacture of certain types of inks, including those for flexographic and packaging applications.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.

Basic Information

Product Name	Direct Yellow 127
CAS No.	12222-68-3
Molecular Formula	C29H19N5Na2O8S2
Molecular Weight	695.66 g/mol
Synonyms	Direct Fast Yellow GC; C.I. Direct Yellow 127; Direct Yellow GC; Pontamine Fast Yellow GC; Benzo Fast Yellow GC; Aizen Direct Fast Yellow GC; Sirius Supra Yellow GC; Atul Direct Fast Yellow GC
EINECS	Contact for details

Quality Control

Every batch of Direct Yellow 127 is manufactured and tested under a strict quality management system to ensure consistent performance and purity. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) detailing key parameters such as color strength, shade, solubility, and impurity profile 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 strong oxidizing agents. The container should be kept tightly sealed when not in use to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Yellow to reddish-brown powder
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 95%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	Max. 5.0%
Water Solubility	Conforms
pH (1% Solution)	6.0 - 8.0
Ash Content	Max. 1.0%

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