Pigment Red 21: Fast Red 2R
1. | Product Information | |
1) Product name | Suncolor Red 7321 | |
2) Color index name | Pigment Red 21 | |
3) Chemical type | azo | |
4) Molecular formula | C23H16CIN3O2 | |
5) CAS No. | 6410-26-0 | |
6) EU No. | 229-096-4 | |
7) Relative trade name | 3132 scarlet Red | |
2. | Physical Properties | |
1) PH Value | 7 | |
2) Specific gravity | 1.50±0.1 | |
3) Water soluble | 1.0% max | |
4) Oil absorption | 45±5% | |
5) Heat stability | 140 Degree C | |
6) Resistance to Water (1-5) | 3 | |
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. | Technical comments | ||
Pigment Red 21 often used for paints and water born ink,and others. | |||
Physical Physical and chemical properties :Pigment Red 21
solubility: melting point is 241 ℃, crystallization of palm red needle crystal in toluene.
Color or color: yellow light red
Melting point / ℃ : 241
Bright yellow light red, light resistance performance. Stable to 150 ℃ heat resistance, solvent resistance is little weak.
Relative density: 1.311 g/cm3
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