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| Product Information | |
| 1) Color index name | Pigment Red 21 | |
| 2) Molecular formula | C23H16CIN3O2 | |
| 3) CAS No. | 6410-26-0 | |
| 4) Relative trade name | 3132 scarlet Red | |
| 2. | Physical Properties | |
| 1) PH Value | 6.5-7.5 | |
| 2) Specific gravity | 1.50±0.1 | |
| 3) Water soluble | 1.0% max | |
| 4) Oil absorption | 45±5% | |
| 5) Heat stability | 150 Degree C | |
| 6) Resistance to Water (1-5) | 4 | |
| 7) Resistance to Oil (1-5) | 3 | |
| 8) Resistance to Acid (1-5) | 5 | |
| 9)Resistance to Alkali (1-5) | 5 | |
| 10) Light fastness (1-8) | 6 | |
| 11) Weather fastness (1-5) | 4-5 | |
| 12) Migration resistance | 5 | |
| 13) E | ≤1.0 | |
| 3. | Application | ||
| 1) Plastics | -- | ||
| 2) Coating | Water paints, industrial paints | ||
| 3) Inks | Waterbased ink |
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| 4) Textile paste | -- | ||