English
Español
tiếng việt
русский
High chromatic strength with intense, clean blue-violet hue.
Excellent lightfastness and weather resistance for long-term color stability.
Good dispersibility in both aqueous and organic systems without flocculation.
Non-toxic, sulfate-free formulation compliant with EN 71-3 and RoHS directives.
Thermally stable up to 250 °C, suitable for medium-temperature processing.
Architectural coatings and exterior wall paints.
Plastic coloration for polyolefins and PVC profiles.
Specialty inks including packaging and security printing.
Artist-grade acrylics and watercolor formulations.
Concrete and stucco colorants for precast and cast-in-place applications.
| Chemical Type | Sodium aluminum silicate sulfide (synthetic ultramarine) |
| Product Form | Fine dry powder |
| Appearance | Free-flowing blue-violet powder |
| Primary Applications | Coatings, plastics, inks, construction materials |
| Key Features | Lightfastness grade 7–8 (ISO 105-B02), pH-stable in neutral to mildly alkaline media |
| Particle Size (D50) | 8–12 µm |
| Volatile Matter (105 °C, 2 h) | ≤ 5.0 wt% |
| Heavy Metals (Pb, Cd, Hg, Cr⁶⁺) | Below detection limits per EU Directive 2009/48/EC |
Q1: What is the primary chemical composition of Holliday 19 Ultramarine Pigment?
A: Holliday 19 is a synthetic sodium aluminosilicate pigment with sulfur-based chromophores, delivering a stable, bright blue hue. Its structure is based on the sodalite cage framework, typical of high-quality ultramarine blues used in demanding industrial applications.
Q2: Is Holliday 19 suitable for use in acid-sensitive systems such as certain coatings or inks?
A: Holliday 19 exhibits limited acid resistance and may undergo color shift or partial degradation below pH ~5.5. It is best suited for neutral to alkaline formulations, including architectural paints, artist materials, and select polymer masterbatches where pH stability is maintained.
Q3: How does Holliday 19 compare to other ultramarine pigments in terms of thermal stability?
A: Holliday 19 offers enhanced thermal stability relative to standard ultramarines, retaining its blue color integrity up to approximately 180–200 °C under short-term exposure. Prolonged heating above this range or exposure to strong oxidizing agents may cause irreversible discoloration to greenish or brownish tones.
Q4: Can Holliday 19 be used in food-contact plastics or cosmetics?
A: Holliday 19 is not approved for direct food contact or cosmetic applications under current global regulatory frameworks. It is intended for industrial and decorative uses only — such as general-purpose coatings, construction materials, and non-regulated plastics — where end-use compliance requirements do not mandate food-grade or personal care certification.
Q5: What dispersion guidance is recommended for optimal color development?
A: For consistent performance, Holliday 19 should be fully dispersed using high-shear mixing or bead milling in the vehicle phase. Pre-wetting with compatible solvents or surfactants is advised to minimize agglomeration. Dosage typically ranges from 0.1% to 2% by weight, depending on opacity, tinting strength, and formulation requirements.
Contact With Us:
E-mail: wangxingqiang@ericwchem.com
Have a Questions? Call Us:
Add:
Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
