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High chroma and excellent lightfastness for vibrant, long-lasting violet-red shades.
Good thermal stability suitable for medium-temperature polymer processing.
Excellent dispersibility in polar and non-polar media including PVC, PS, and ABS.
Low migration tendency, ensuring color integrity in multi-layer and food-contact-adjacent applications.
Compliant with major regulatory frameworks including EU REACH and US FDA 21 CFR for indirect food contact.
Polyvinyl chloride (PVC) profiles and rigid packaging.
Polystyrene (PS) and acrylonitrile-butadiene-styrene (ABS) consumer electronics housings.
Engineering plastics used in automotive interior components.
General-purpose thermoplastics requiring high-color-strength, heat-stable organic pigments.
Masterbatch formulations for transparent and opaque colored films.
| Chemical Type | Disazo pigment (C.I. Pigment Red 170) |
| Product Form | Free-flowing powder |
| Appearance | Red-violet powder with bluish undertone |
| Primary Applications | PVC, PS, ABS, general-purpose thermoplastics |
| Key Features | High tinctorial strength, good heat stability up to 220 °C |
| Benefits | Consistent batch-to-batch color reproducibility and low dust generation |
| Regulatory Status | REACH registered; compliant with FDA 21 CFR §178.3297 (for polymer additives) |
| Recommended Processing | Extrusion, injection molding, calendering |
Q1: What is the primary chemical class of Duasyn Red Violet E2R?
A: Duasyn Red Violet E2R is a high-performance disazo pigment, belonging to the diarylide yellow/violet subclass, engineered for balanced hue strength, thermal stability, and lightfastness in demanding applications.
Q2: Is this pigment suitable for use in food-contact plastics?
A: Duasyn Red Violet E2R is not approved for direct food-contact applications under major global regulatory frameworks. It is intended for non-food-contact industrial plastics, coatings, and inks where high chroma and weather resistance are required.
Q3: How does its dispersion behavior compare to other high-strength violet pigments?
A: Duasyn Red Violet E2R exhibits excellent dispersibility in both polar and non-polar polymer systems, particularly in PVC, PS, and ABS. Its surface treatment supports efficient wetting and minimizes agglomeration during melt compounding, contributing to consistent color development and reduced filtration pressure.
Q4: What are the recommended processing temperature limits for optimal performance?
A: This pigment demonstrates good thermal stability up to approximately 220–240 °C for short residence times. Prolonged exposure above 230 °C—especially in oxygen-rich environments—may lead to gradual chromatic shift; therefore, optimized screw design and residence time control are advised during extrusion or injection molding.
Q5: Can it be used in aqueous-based ink systems?
A: While primarily designed for solvent- and polymer-based systems, Duasyn Red Violet E2R can be formulated into aqueous inks using appropriate dispersants and milling techniques. However, its hydrophobic nature typically requires robust stabilization to achieve colloidal stability and prevent settling or flocculation.
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