Description

Pigment Yellow 138 is a high-performance, green-shade diarylide yellow organic pigment known for its excellent lightfastness, weather resistance, and heat stability. It is a critical component for achieving durable and vibrant yellow hues in demanding applications where color retention is paramount. This pigment is essential for manufacturers in the plastics, coatings, and printing ink industries seeking superior performance and reliability.

Application

• Plastics Coloring: Masterbatch and compound coloring for engineering plastics (e.g., PVC, polyolefins, ABS), offering excellent dispersion and heat stability during processing.
• Industrial Coatings: Formulation of high-durability paints, including automotive OEM and refinish coatings, coil coatings, and industrial maintenance paints.
• Printing Inks: Used in high-quality packaging inks, publication gravure inks, and flexographic inks requiring good transparency and gloss.
• Synthetic Fibers: Mass pigmentation of synthetic fibers such as polypropylene and polyamide for textiles and carpets.
• Artists' Colors: A premium-grade pigment for high-quality artists' oils, acrylics, and watercolors due to its purity and lightfastness.

Basic Information

Product Name	Pigment Yellow 138
CAS No.	30125-47-4
Molecular Formula	C₃₄H₃₂Cl₂N₆O₄
Molecular Weight	651.57 g/mol
Synonyms	Pigment Yellow 138; C.I. Pigment Yellow 138; 2,2'-[(3,3'-Dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(2,4-dimethylphenyl)-3-oxobutanamide]; Diarylide Yellow HR; Permanent Yellow HR; Hostaperm Yellow H4G; Cromophtal Yellow 2RLTS; Irgazin Yellow 2RLT; Novoperm Yellow H4G; Paliotol Yellow 1840
EINECS	250-063-5

Quality Control

Our production of Pigment Yellow 138 adheres to stringent quality management systems to ensure batch-to-batch consistency and performance. Key parameters such as color strength, hue, particle size distribution, and rheological properties are rigorously tested against established standards. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance characteristics is provided with every shipment to guarantee compliance with your specifications.

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. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	Yellow Powder
Color Strength (vs. Std.)	98 - 102 %
Hue Angle (CIELAB)	Contact for details
Lightfastness (ISO 105-B02)	7-8 (1-8 scale)
Heat Stability (Plastics)	280 - 300 °C
Oil Absorption	40 - 50 g/100g
Residue on Sieve (63 µm)	≤ 0.1 %
Volatile Matter (at 105°C)	≤ 2.0 %

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