Permanent Red F5RK | Pigment Red 170 | CAS 2786-76-7

Permanent Red F5RK

Chinese alias: Pigment Red 170, Naphthol Red
English name: Pigment Red 170
Molecular formula: C₂₆H₂₂N₄O₄
Molecular weight: 454.48
CAS registry number: 2786-76-7
EINECS registry number: 220-509-3
Physicochemical properties
Classification: Monoazo pigment
Appearance: Bluish red powder
Hue: Bluish red
Relative density: 1.25-1.36
Bulk density (lb/gal): 10.4-11.3
Melting point (°C): 315-325
Average particle size (μm): 0.18-0.22
Particle shape: Rod-like
Specific surface area (m²/g): 22-26
pH value (10% slurry): 6
Oil absorption (g/100g): 59-81
Opacity: Translucent type
Product properties:
Insoluble in water, resistant to acids and alkalis, insoluble in common organic solvents
Lightfastness: 6
Heat resistance: 200°C
Weather resistance: 3
Water resistance: 5
Migration resistance: 5
Oil resistance: 5
Acid resistance: 5
Alkali resistance: 5
Tinting strength slightly higher than F3RK
Opacity slightly lower than F3RK
Applications:
High-end topcoats: Surface coatings for furniture, appliances, motorcycles, etc. (high gloss)
Plastic coloring: Rigid PVC, HDPE, PP, TPP (strong migration resistance)
Inks: Offset/gravure inks (high saturation, good fluidity)
Uses: Suitable for coatings, plastics, inks and printing, art and decorative materials.