Description

C.I.Direct Yellow 53 is a high-purity, synthetic organic dye belonging to the direct dye class, valued for its strong affinity to cellulosic fibers. Its primary commercial value lies in providing a bright, clear yellow hue with excellent wash and light fastness properties in textile applications. This product is essential for manufacturers in the textile, paper, and leather industries seeking reliable and consistent colorants for their dyeing and printing processes.

Application

• Primary dyeing of cotton, viscose, and other cellulosic textiles.
• Coloration of paper products, including specialty papers and packaging.
• Dyeing of leather and leather goods.
• As a colorant for the manufacture of ink and toner.
• Potential use in the coloration of non-woven fabrics.
• Research and development applications in material science and analytical chemistry.

Basic Information

Product Name	C.I. Direct Yellow 53
CAS No.	61725-05-1
Molecular Formula	C29H19N5Na2O8S2
Molecular Weight	695.66 g/mol
Synonyms	Direct Yellow 53; Direct Fast Yellow 5G; C.I. 29050; Direct Yellow 5G; Direct Yellow RL; Amanil Fast Yellow 5G; Atul Direct Fast Yellow 5G; Pyrazol Yellow FG; Sirius Supra Yellow 5G
EINECS	262-964-5

Quality Control

Our C.I. Direct Yellow 53 is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise color strength, shade, and purity specifications. A Certificate of Analysis (COA) detailing key parameters such as assay, solubility, and fastness properties is provided with every shipment to guarantee batch-to-batch consistency and performance.

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 and sources of ignition.

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	≤ 1.0%
Shade	Conforms to Standard
Fastness to Washing	≥ 4-5 (ISO 105-C03)
Fastness to Light	≥ 5-6 (ISO 105-B02)

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