Description

Pigment Yellow 139 is a high-performance, opaque organic pigment renowned for its excellent lightfastness, weather resistance, and clean, bright yellow hue. This pigment is a critical component for formulators seeking durable and vibrant coloration in demanding applications. It is extensively utilized across the plastics, coatings, and printing ink industries where long-term color stability is paramount.

Application

• Plastics Coloring: Masterbatch and compound production for engineering plastics, PVC, polyolefins, and synthetic fibers.
• Industrial Coatings: High-durability applications including automotive OEM and refinish coatings, coil coatings, and industrial maintenance paints.
• Printing Inks: Formulation of packaging inks, decorative inks, and other inks requiring high opacity and weatherability.
• Architectural Coatings: Exterior paints and coatings where resistance to UV light and weathering is essential.
• Specialty Applications: Used in colored concrete, construction materials, and other applications demanding inorganic pigment-like stability with organic pigment color strength.

Basic Information

Product Name	Pigment Yellow 139
CAS No.	36888-99-0
Molecular Formula	C16H12N4O4
Molecular Weight	300.29 g/mol
Synonyms	Pigment Yellow 139; C.I. 56298; Benzo[cd]indol-2(1H)-one, 5-[(2,3-dihydro-6-methyl-2-oxo-1H-benzimidazol-5-yl)amino]-; Isolindo Yellow; Isolindo Yellow 2R; Isolindo Yellow 3R; PY 139; 5-[(2,3-Dihydro-6-methyl-2-oxo-1H-benzimidazol-5-yl)amino]benzo[cd]indol-2(1H)-one
EINECS	253-269-1

Quality Control

Our production of Pigment Yellow 139 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Key parameters such as color strength, hue, particle size distribution, and rheological properties are rigorously tested against established internal and industry standards. A Certificate of Analysis (COA) detailing specific lot results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at ambient temperature (15-25°C). Keep away from incompatible materials and sources of intense heat.

Specification

Item	Specification
Appearance	Yellow Powder
Color Strength (vs. Std.)	98 - 102%
Hue Angle	Contact for details
Lightfastness (1-8)	7-8
Weathering Resistance	Excellent
Heat Stability (°C)	280 min
Oil Absorption (g/100g)	40 - 60
Particle Size (D50, μm)	Contact for details
Residue on Sieve (45μm, %)	≤ 0.5
Volatile Matter (%)	≤ 2.0

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