Pigment Yellow 139
Pigment Yellow 139 is an isoindoline yellow with very good durability for coatings and plastics, registered as C.I. 56298 (CAS 36888-99-0). The pigment withstands 240°C processing and delivers light fastness 8, with fastness that holds up in both mass tone and reduction. It is specified for Automotive OEM/refinish coatings, Powder coatings, Printing inks (gravure/flexo), Packaging inks. Key strengths include good weatherability with balanced cost plus excellent dispersibility in inks and coatings.
Key Features
Technical Specifications
| C.I. NO. | 56298 |
| CAS NO. | 36888-99-0 |
| EU NO | 253-256-2 |
| Molecular Formula | C16H9N5O6 |
| Chemical Group | Isoindoline |
| Moisture | ≤1.5 |
| Water Soluble Matter | ≤1.5 |
| Electric Conductivity | ≤500 |
| Fineness (80 mesh) | ≤500 |
| pH Value | 5.0-6.0 |
Physical Data & Fastness Properties
| Acid Resistance | 6 |
| Alkali Resistance | 6 |
| Alcohol Resistance | 6 |
| Ester Resistance | 8 |
| Benzene Resistance | 9 |
| Soap Resistance | 7 |
| Heat Resistance | 240°C |
| Light Fastness | 8 |
Application Fields
This product is widely used in the following application fields, providing excellent coloring performance and durability:
- Automotive OEM/refinish coatings
- Powder coatings
- Printing inks (gravure/flexo)
- Packaging inks
- Paints and coatings
- Plastics coloring
Usage Instructions
Recommended dosage: 0.3–3.0% depending on color strength and application. For plastics/masterbatch, pre-disperse with suitable carrier resin and dispersant; for inks/coatings, mill to target fineness. Processing temperature should be controlled below 240°C (system dependent). Ensure good ventilation and use appropriate PPE. Store sealed in a cool, dry place.
Frequently Asked Questions
What is Pigment Yellow 139 used for?
Pigment Yellow 139 is mainly used for transparent coloring of Automotive OEM/refinish coatings, Powder coatings, Printing inks (gravure/flexo), Packaging inks and other polymers, and can also be used for masterbatch production.
What are the key properties of Pigment Yellow 139?
Pigment Yellow 139 offers a heat resistance of 240°C, and has light fastness rated 8, and has a Isoindoline chemical structure.
What is the CAS number of Pigment Yellow 139?
The CAS number of Pigment Yellow 139 is 36888-99-0, and its Colour Index number is C.I. 56298.
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