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High tinctorial strength with excellent color purity and clean red shade.
Good lightfastness suitable for medium-term outdoor applications.
Excellent dispersibility in both aqueous and solvent-based systems.
Good heat stability up to 140 °C, supporting common industrial processing conditions.
Compliant with major global regulatory frameworks for general-purpose pigments.
Printing inks — especially for packaging gravure and flexographic inks.
Plastics — used in PS, ABS, and PVC for injection-molded consumer goods.
Paints and coatings — including architectural and industrial maintenance coatings.
Textile printing — suitable for pigment paste formulations on cotton and blends.
Masterbatches — widely applied in color concentrate production for polyolefins.
| Chemical Type | Azo pigment (C.I. Pigment Red 112) |
| Product Form | Free-flowing powder |
| Appearance | Red powder with bluish undertone |
| Primary Applications | Printing inks, plastics, paints & coatings, textiles |
| Key Features | High tinting strength, good dispersion, medium lightfastness |
| Benefits | Cost-effective performance, consistent batch-to-batch quality, broad compatibility |
| Regulatory Status | REACH registered; compliant with EU Directive 2002/61/EC |
| Storage Conditions | Store in cool, dry place away from direct sunlight and moisture |
Q1: What is the primary chemical class and typical hue profile of Hansa Red 3B?
A: Hansa Red 3B is an organic monoazo pigment belonging to the Hansa yellow–red series. It delivers a bright, clean mid-red shade with moderate bluish undertones and good tinting strength in both aqueous and organic media.
Q2: Is Hansa Red 3B suitable for use in food-contact plastics or inks?
A: Hansa Red 3B is not approved for direct food-contact applications under major global regulatory frameworks. It is intended for general industrial uses such as decorative coatings, non-food packaging inks, and engineering plastics where regulatory compliance for migration is not required.
Q3: How does Hansa Red 3B perform in terms of lightfastness and weather resistance?
A: Hansa Red 3B offers moderate lightfastness in most polymer systems and coatings, typically rated between 4–5 on the Blue Wool Scale. Its weather resistance is limited; prolonged UV exposure may lead to noticeable fading, especially in thin films or outdoor applications without protective overcoats.
Q4: What are common dispersion methods and compatibility considerations?
A: Hansa Red 3B disperses well using high-shear mixing or bead milling in polar resins and water-based systems. It shows good compatibility with acrylics, vinyls, and nitrocellulose but may require surface treatment or dispersing aids in non-polar thermoplastics like PP or PE to ensure optimal color development and stability.
Q5: What is the typical dosage range in industrial coating formulations?
A: Dosage depends on formulation requirements and desired opacity or intensity, but it is generally used at low concentrations—typically ranging from 0.1% to 2% by weight relative to total solids—to achieve full coverage and consistent shade development.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
