Pigment Orange 34
Pigment Orange 34 is a strong reddish orange disazo pyrazolone pigment for liquid and packaging inks, registered as C.I. 21115 (CAS 15793-73-4). It combines heat resistance up to 200°C with light fastness 5 on the blue-wool scale, holding its shade through demanding processing. Recommended applications include Printing inks (gravure/flexo), Packaging inks, Paints and coatings, Plastics coloring. Key strengths include stable quality and easy to disperse plus high brightness and good opacity/coverage (grade dependent).
Key Features
Technical Specifications
| C.I. NO. | 21115 |
| CAS NO. | 15793-73-4 |
| EU NO | 239-898-6 |
| Molecular Formula | C34H28CI2N8O2 |
| Chemical Group | Disazo Pyrazolone |
| Moisture | ≤2.0 |
| Water Soluble Matter | ≤1.5 |
| Electric Conductivity | ≤500 |
| Fineness (80 mesh) | ≤5.0 |
| pH Value | 6.0-7.0 |
Physical Data & Fastness Properties
| Acid Resistance | 10 |
| Alkali Resistance | 8 |
| Alcohol Resistance | 6 |
| Ester Resistance | 10 |
| Benzene Resistance | 10 |
| Soap Resistance | 8 |
| Heat Resistance | 200°C |
| Light Fastness | 5 |
Application Fields
This product is widely used in the following application fields, providing excellent coloring performance and durability:
- Printing inks (gravure/flexo)
- Packaging inks
- Paints and coatings
- Plastics coloring
- Masterbatch production
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 280°C (system dependent). Ensure good ventilation and use appropriate PPE. Store sealed in a cool, dry place.
Frequently Asked Questions
What is Pigment Orange 34 used for?
Pigment Orange 34 is mainly used for transparent coloring of Printing inks (gravure/flexo), Packaging inks, Paints and coatings, Plastics coloring and other polymers, and can also be used for masterbatch production.
What are the key properties of Pigment Orange 34?
Pigment Orange 34 offers a heat resistance of 200°C, and has light fastness rated 5, and has a Disazo Pyrazolone chemical structure.
What is the CAS number of Pigment Orange 34?
The CAS number of Pigment Orange 34 is 15793-73-4, and its Colour Index number is C.I. 21115.
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