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Exceptional lightfastness and weather resistance for long-term color stability.
High tinctorial strength with intense, clean blue-violet hue.
Excellent alkali resistance suitable for cementitious and plaster-based systems.
Low oil absorption ensures efficient dispersion and optimal rheology in liquid systems.
Non-toxic, sulfate-free formulation compliant with global regulatory standards for consumer-facing applications.
Architectural coatings and exterior wall paints.
Decorative concrete, terrazzo, and colored mortars.
Plastic masterbatches for rigid PVC and polyolefins.
Artist-grade acrylics and water-based printing inks.
Specialty cosmetics and personal care formulations (where permitted).
| Chemical Type | Sodium aluminosilicate with polysulfide chromophore |
| Product Form | Fine dry powder |
| Appearance | Free-flowing violet-blue powder |
| Primary Applications | Coatings, construction materials, plastics, inks |
| Key Features | Alkali-stable, non-bleeding, low heavy metal content |
| Benefits | Consistent batch-to-batch color, easy wetting, minimal flocculation |
| pH Stability Range | 5.0–10.5 |
| Storage Conditions | Keep dry, cool, and protected from moisture and direct sunlight |
Q1: What is the primary chemical composition of Nubiola C-84?
A: Nubiola C-84 is a synthetic sodium aluminosilicate pigment with polysulfide chromophores, belonging to the ultramarine blue family. Its color arises from sulfur-containing anionic radicals trapped within a zeolitic lattice structure.
Q2: Is Nubiola C-84 suitable for use in food-contact plastics or packaging applications?
A: Nubiola C-84 is not intended for direct food-contact applications. It is approved for use in certain industrial and decorative coatings, inks, and non-food-grade plastics where regulatory compliance does not require food-contact certification.
Q3: How stable is Nubiola C-84 under acidic conditions?
A: Ultramarine pigments, including C-84, are sensitive to low pH environments. Prolonged exposure to acids below pH 5 may cause fading or discoloration due to degradation of the polysulfide chromophores. Neutral to alkaline processing and application conditions are strongly recommended.
Q4: What is the typical dosage range for Nubiola C-84 in polymer masterbatches?
A: Dosage depends on the desired shade intensity and base polymer transparency, but it is typically used at low concentrations—generally ranging from 0.1% to 2% by weight in masterbatch formulations.
Q5: Can Nubiola C-84 be dispersed in water-based systems?
A: Yes, C-84 can be incorporated into aqueous dispersions using appropriate surfactants and high-shear mixing. However, its hydrophilic nature requires careful stabilization to prevent agglomeration and ensure long-term dispersion stability.
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E-mail: wangxingqiang@ericwchem.com
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