

Ranbar Red P1240, C.I. Pigment Red 144, is a semi-transparent blue-red azo condensation pigment. It exhibits a bright and vivid color, with extremely high coloring power. It possesses outstanding dispersibility and excellent colorfastness properties, including lightfastness, heat stability, migration resistance, solvent resistance, and acid-alkali resistance.
Ranbar Red P1240 Azo condensation pigment demonstrates exceptional migration resistance in flexible PVC (polyvinyl chloride) and maintains heat resistance up to 300°C in HDPE. It is important to note that this organic pigment exhibits relatively higher warping tendencies in HDPE.


Brand: Ranbar
Type number: Ranbar Red P1240
Color index: Pigment Red 144
CAS NO.: 5280-78-4
C.I. NO.: 20735
Relative molecular mass: 828.94
Chemical structure: Azo Condensation Pigment
Pigment Type: Organic Pigment
Color shade: blue-red
Temperature resistance: 280-300ºC
Weather resistance: 4-5
Light resistance: Grade 7-8
Packing specification: 10KG/bag
Physical Properties:
Color Strength |
99.42% |
Tinting Strength (SD 1/3 in PP) |
0.17% |
Volatile components |
0.14% |
Density |
1.5g/cm³ |
Specific surface area |
38.2m²/g |
PH value |
7-8 |
Conductivity |
37.10µS/cm |
120 mesh sieve residue |
4.70% |

polyvinyl chloride (PVC), polystyrene, polyurethane, styrene-based engineering plastics, elastomers, or cast resins, including plastics made from unsaturated polyester. Its excellent thermal stability and light resistance make it a suitable choice for polypropylene fiber dyeing. It is also recommended for various high-end printing inks, metal decorative inks, and can be used in architectural decorative coatings, powder coatings, and industrial coatings, among others.




