Quinacridone Violet
Overview
Quinacridone Violet (PV 19) is a synthetic organic pigment belonging to the quinacridone family, first commercialized in the 1950s. It is prized for its vivid violet shade and exceptional performance in demanding applications. Unlike many organic pigments, it exhibits remarkable resistance to fading, heat, and chemicals, making it a preferred choice for high-end coatings and plastics. The pigment exists in several crystal phases, with the gamma phase being the most commercially significant due to its optimal color properties. Its molecular structure ensures minimal migration or bleeding, even in polymer matrices. Industrial production involves multi-step synthesis from terephthalic acid derivatives, followed by careful conditioning to achieve the desired particle morphology.
Physical and Chemical Properties
Quinacridone Violet demonstrates outstanding stability under extreme conditions. It retains its color integrity even after prolonged exposure to UV radiation or temperatures up to 300°C, outperforming many inorganic pigments. The crystalline structure contributes to its high tinting strength and opacity, though transparent variants are available for specific uses like automotive metallic coatings. Chemically, it is inert to most acids, alkalis, and solvents, ensuring compatibility with diverse formulations. Its insolubility in water makes it suitable for outdoor applications where weather resistance is critical. Particle size distribution (typically 0.1–0.5 µm) can be tailored to influence dispersion characteristics and gloss levels in end products.
Main Applications
In automotive coatings, Quinacridone Violet provides long-lasting color for exterior finishes, often combined with effect pigments for metallic or pearlescent effects. Its weatherability meets OEM specifications for 10+ years of outdoor durability. Industrial paint manufacturers use it for machinery, agricultural equipment, and architectural coatings where fade resistance is paramount. The plastics industry employs it for coloring PVC, polyolefins, and engineering resins, especially in applications like outdoor furniture or automotive interiors. Artists’ grades offer unparalleled permanence in oil, acrylic, and watercolor paints. Specialty applications include security inks and high-end packaging, leveraging its non-migrating properties.
Safety and Storage
While Quinacridone Violet is classified as non-hazardous under GHS, inhalation of fine dust should be avoided. Workplace exposure limits follow general particulate standards (e.g., OSHA’s 15 mg/m³ for total dust). Suppliers typically provide material in low-dust or pelletized forms to minimize handling risks. Storage requires protection from humidity to prevent caking. Bulk containers should be sealed and stored on pallets away from direct sunlight. Shelf life exceeds five years under proper conditions. For formulation, pre-dispersed versions or masterbatches are recommended to reduce dust generation during processing.
B2B Procurement Guide
When sourcing Quinacridone Violet, confirm the CAS 1047-16-1 to ensure authenticity. Technical datasheets should specify parameters like hue angle (typically 330–340° in CIELAB space), strength relative to standard, and resistivity values for electronic applications. Request batch-specific lightfastness ratings (e.g., ASTM D4303 or ISO 105-B02). For large-volume purchases, inquire about customization options such as surface treatments for improved dispersion or reduced flocculation. Lead times may vary due to complex synthesis; some suppliers offer regional stockpiles for faster delivery. Pricing tiers often apply at 100+ kg quantities, with contracts indexed to raw material costs for terephthalic acid precursors.
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