Description

Sirius Supra Yellow Gr-Ll is a high-performance organic pigment belonging to the diarylide yellow chemical class. This product is engineered to deliver superior color strength, excellent lightfastness, and strong solvent resistance, making it a critical component for demanding industrial applications. It is primarily sought after by manufacturers in the plastics, inks, and coatings industries who require reliable and consistent coloration for high-quality finished products. The compound is identified by CAS No. 61725-09-5.

Application

• Plastics Coloring: Masterbatch and compound production for polyethylene (PE), polypropylene (PP), polystyrene (PS), and ABS, offering good heat stability and dispersion.
• Printing Inks: Formulation of high-grade offset, flexographic, and gravure inks, providing vibrant yellow hues and excellent printability.
• Industrial Coatings: Used in solvent-borne and high-solid coating systems for automotive refinish, industrial machinery, and architectural applications.
• Specialty Paints: Suitable for artists' colors and decorative paints where color purity and durability are paramount.
• Synthetic Fibers: Mass coloration of fibers during the spinning process to achieve uniform and fade-resistant colors.

Basic Information

Product Name	Sirius Supra Yellow Gr-Ll
CAS No.	61725-09-5
Molecular Formula	C₃₄H₂₈Cl₂N₆O₄
Molecular Weight	647.53 g/mol
Synonyms	Pigment Yellow 13; C.I. 21100; Diarylide Yellow AAA; Permanent Yellow GR; Vulcan Fast Yellow GR; Benzidine Yellow GR; 3,3'-[(3,3'-Dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[4-chloro-2-methylbenzamide]; 3,3'-Dichlorobenzidine Diarylide Pigment
EINECS	262-946-9

Quality Control

Every batch of Sirius Supra Yellow Gr-Ll is manufactured under a strict quality management system. Our products undergo rigorous quality testing to ensure compliance with industry standards for color value, strength, and physical properties. Certificates of Analysis (COA) detailing purity, shade, and performance characteristics are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat sources and incompatible materials. Under these conditions, the product maintains its specified properties.

Specification

Item	Specification
Appearance	Yellow Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 5% (vs. Standard)
Hue	Within agreed tolerance
Resistance to Light	≥ 7 (Blue Scale)
Heat Stability	≥ 200°C (5 min)
Moisture Content	≤ 2.0%
Ash Content	≤ 1.0%
Water Soluble Matter	≤ 1.5%
Particle Size (D50)	0.2 - 0.5 µm

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