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High chromatic strength with intense, clean blue-violet hue.
Excellent lightfastness and weather resistance for long-term color stability.
Good thermal stability up to 180°C, suitable for medium-temperature processing.
Low water solubility and high chemical inertness in alkaline environments.
Consistent particle size distribution ensuring uniform dispersion and gloss retention.
Architectural and industrial coatings requiring vibrant, non-toxic blue tones.
Plastic coloration for polyolefins, PVC, and engineering thermoplastics.
Specialty inks for packaging and decorative printing applications.
Colored concrete, mortars, and dry-mix building materials.
Soap, cosmetics, and personal care formulations compliant with EU Cosmetics Regulation (EC No 1223/2009).
| Chemical Type | Sodium aluminosilicate sulfide (synthetic ultramarine) |
| Product Form | Fine, free-flowing powder |
| Appearance | Deep violet-blue granular powder |
| Primary Applications | Coatings, plastics, inks, construction materials, cosmetics |
| Key Features | Non-toxic, sulfate-free, heavy metal-free, REACH-compliant |
| Particle Size (D50) | 8–12 µm |
| pH (10% aqueous suspension) | 8.5–9.5 |
| Volatile Matter (105°C, 2 hrs) | ≤ 5.0 wt% |
Q1: What is the primary chemical composition and structural basis of Holliday 07 Ultramarine Pigment?
A: Holliday 07 is a synthetic sodium aluminosilicate pigment with a sulfide-containing sodalite-type crystal lattice. Its intense blue color arises from polysulfide anions (Sₙ²⁻) trapped within the porous framework, not from transition metals or organic dyes.
Q2: Is Holliday 07 suitable for use in acidic environments or low-pH formulations?
A: No — ultramarine pigments, including Holliday 07, are inherently sensitive to acids. Exposure to pH below approximately 5 may cause irreversible color fading or discoloration due to decomposition of the polysulfide chromophores and structural breakdown of the aluminosilicate matrix.
Q3: How does Holliday 07 perform under UV exposure and elevated temperature conditions?
A: Holliday 07 exhibits good thermal stability up to approximately 250 °C in inert or oxidizing atmospheres, but prolonged exposure above this threshold may lead to gradual color shift. While it offers moderate UV resistance in opaque systems, extended direct UV irradiation — especially in thin films or clear matrices — can contribute to slow photochemical degradation over time.
Q4: Can Holliday 07 be used in food-contact plastics or coatings?
A: Holliday 07 is not intended for direct food-contact applications unless explicitly approved under applicable regional regulatory frameworks. It is commonly used in industrial coatings, decorative plastics, and non-food packaging where regulatory compliance is not required — always verify suitability against current local regulations before use.
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E-mail: wangxingqiang@ericwchem.com
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