Pigment Yellow 128

Brand	Fineland Chem
Color Index	Pigment Yellow 128
Color Index No	20037
CAS No	79953-85-8
EC No	279-356-6
Chemical Group	Disazo Condensation
Chemical Formula	C₅₅H₃₇Cl₅F₆N₈O₈

Introduction

Pigment yellow 128 (CAS 79953-85-8) a greenish azo pigment with excellent resistance to solvents, light and weather. It is equivalent to Ciba Cromophtal Yellow 8GN/8GNP. It shows a green – tinged yellow color, with a hue value of 94.5. It has a relatively high saturation, presenting a bright green – yellow shade, which can provide a unique color effect in applications.

Best Selling

PY128 – DuraPlast®3128 ⬇️TDS

As a condensation azo pigment, Pigment Yellow 128 has excellent heat resistance, light resistance, weather resistance, solvent resistance and migration resistance. In the plastics industry, it is often used for coloring polyolefin plastics.

Physical Properties

Test Item	Specification
Density (g/cm3 )	1.50-1.65
Specific Surface Area(m2/g)	15-30
Oil Absorption(g/100g)	35-45
PH Value	6.6-7.5
Bulk Density (lb/gal)	11.8-12.94
Total impurities(ppm)	≤600

Fastness Properties (5=excellent, 1=poor) | Light Fastness (8=excellent, 1=poor)

Heat Resistance (℃)	240	Alkali Resistance (1-5)	5
Light Resistance (Full Shade, 1-8)	7-8	Migration Resistance(1-5)	5
Light (Reduced tinting, 1-8)	6-7	Ethyl Acetate (1-5)	5
Weather Resistance (1-5)	5	Ethanol (1-5)	5
Acid Resistance (1-5)	5	MEK (1-5)	5

Application

Printing Ink: Discover high-performance ink pigments for various printing technologies including water-based, solvent-based, offset, inkjet, UV curing, and decorative applications. More Details

Paint and Coating: Explore a wide range of coating pigments tailored for paints, oils, automotive finishes, industrial applications, concrete, cement, and ceramics. More Details

Plastic: Browse a comprehensive selection of plastic pigments designed for PE, PVC, EVA, rubber, and a variety of engineering plastics. More Details

Special Applications: Find specialized pigments offering unique effects and functionalities for textiles, resins, glazes, metallic finishes, fluorescence, and anti-corrosion needs. More Details

Application

Printing Ink: Discover high-performance ink pigments for various printing technologies including water-based, solvent-based, offset, inkjet, UV curing, and decorative applications. More Details

Paint and Coating: Explore a wide range of coating pigments tailored for paints, oils, automotive finishes, industrial applications, concrete, cement, and ceramics. More Details

Plastic: Browse a comprehensive selection of plastic pigments designed for PE, PVC, EVA, rubber, and a variety of engineering plastics. More Details

Special Applications: Find specialized pigments offering unique effects and functionalities for textiles, resins, glazes, metallic finishes, fluorescence, and anti-corrosion needs. More Details

Package and Delivery

● 25KG Kraft bag, 400KG Carton Box.
● Lead Time: Normally around 15 days after signed contract.

Advantages

1. Exceptional Color Performance

Vivid Greenish Yellow Hue: Exhibits a high-saturation greenish-yellow tone (hue value ~94.5), providing bright and distinctive coloration ideal for applications requiring vibrant, eye-catching shades.
Strong Tinting Strength: Excellent dispersibility allows minimal usage to achieve desired color intensity, reducing formulation costs.

2. Outstanding Weather & Light Fastness

UV and Outdoor Durability: Stable molecular structure resists fading or discoloration under prolonged UV exposure and outdoor conditions, achieving light fastness ratings of 7–8 (out of 8). This makes it suitable for outdoor coatings, plastic building materials, and other weather-sensitive applications.
Superior to Most Azo Pigments: Its weather resistance is second only to Pigment Yellow 109, offering enhanced durability compared to conventional azo pigments.

3. Robust Chemical & Physical Stability

Solvent and Migration Resistance: Resists extraction by organic solvents (e.g., alcohols, ketones, esters) and migration from plastic matrices, making it suitable for inks, coatings, and plastic products (including food packaging materials requiring low migration).
Acid and Alkali Resistance: Maintains color stability in weak acidic or alkaline environments, fitting for industrial coatings exposed to chemical media.

4. Moderate to High Heat Resistance

Heat Tolerance up to 250°C: Withstands the mid-to-high temperatures (typically ≤230°C) during processing of polyolefins (e.g., PE, PP), preventing thermal decomposition or hue shift.
Note: While less heat-resistant than some metal complex pigments (e.g., PY 110, which withstands >300°C), PY 128 remains well-suited for most conventional plastic coloring.

5. Broad Application Compatibility

Multi-Industry Adaptability: Shows excellent dispersibility and stability in plastics (polyolefins, PVC), solvent/water-based coatings, and printing inks (offset, gravure), requiring minimal formulation adjustment across different systems.
Environmental Safety: Free of heavy metals, complying with standards like EU RoHS and EN71-3 (toy safety), making it suitable for eco-friendly packaging and toys.