Description

C.I. Disperse Yellow 66 is a synthetic organic dye belonging to the disperse dye class, identified by CAS No. 12223-87-9. This high-performance colorant is engineered for exceptional color fastness and dispersion stability in demanding dyeing processes. It is a critical component for manufacturers in the textile and polymer industries seeking vibrant, durable yellow hues.

Application

This disperse dye is primarily utilized for coloring synthetic fibers, offering excellent performance in various application methods.

• Polyester Fiber Dyeing: The primary application for high-temperature exhaust dyeing and thermosol processes.
• Polyester/Elastane (Spandex) Blends: Provides good coverage and color yield on stretch fabrics.
• Acetate and Triacetate Fibers: Used for dyeing these cellulose derivative materials.
• Nylon Dyeing: Applicable for certain types of polyamide fibers, often in combination with other dyes.
• Plastics and Polymer Coloring: Used for mass coloration of hydrophobic polymers like polystyrene and certain engineering plastics.
• Ink Formulation: A pigment source for specialty inks where solvent resistance is required.

Basic Information

Product Name	C.I. Disperse Yellow 66
CAS No.	12223-87-9
Molecular Formula	C18H14N4O5
Molecular Weight	366.33 g/mol
Synonyms	Disperse Yellow 66; C.I. 56021; Disperse Fast Yellow 5G; Samaron Yellow 5G; Foron Yellow SE-5G; Dianix Yellow 5G-E; Palanil Yellow 5G; Artisil Yellow 5G; Yellow 66 (Disperse); 1,5-Dihydroxy-4,8-diaminoanthraquinone
EINECS	Contact for details

Quality Control

Our C.I. Disperse Yellow 66 is manufactured under a stringent quality management system. Every batch is tested against rigorous internal specifications to ensure consistent shade, strength, and dispersion properties critical for industrial dyeing. A Certificate of Analysis (COA) detailing key parameters such as color strength, particle size distribution, and dispersion stability is provided with each shipment to guarantee reliable performance in your process.

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 product is light-sensitive; prolonged exposure to direct light should be avoided to prevent shade alteration.

Specification

Item	Specification
Appearance	Yellow to Orange Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Particle Size	> 95% passes 80 mesh
Dispersion Stability	Grade 4/5 (ISO 105-Z02)
pH (Aqueous Slurry)	6.0 - 8.0

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