Pigment Red 23
Pigment Red 23 is an organic pigment in the Naphthol AS class. Identification: C.I. 12315, CAS 6471-49-4. Key performance: heat resistance 140, light fastness 5. Suitable for general-purpose inks, coatings and plastics where balanced performance is required.
Key Features
Technical Specifications
| C.I. NO. | 12315 |
| CAS NO. | 6471-49-4 |
| EU NO | 229-245-3 |
| Molecular Formula | C24H17N5O7 |
| Chemical Group | Naphthol AS |
| Moisture | ≤2.0 |
| Water Soluble Matter | ≤1.5 |
| Electric Conductivity | ≤500 |
| Fineness (80 mesh) | ≤5.0 |
| pH Value | 6.5-7.5 |
Physical Data & Fastness Properties
| Acid Resistance | 4 |
| Alkali Resistance | 4 |
| Alcohol Resistance | 4 |
| Ester Resistance | 3 |
| Benzene Resistance | 3 |
| Soap Resistance | 5 |
| Heat Resistance | 140 |
| Light Fastness | 5 |
Applications
- General-purpose 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 140°C (system dependent). Ensure good ventilation and use appropriate PPE. Store sealed in a cool, dry place.
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