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Highly dispersible precipitated silica with optimized particle morphology for enhanced pigment performance.
Controlled surface chemistry enabling strong interaction with polymer matrices and improved mechanical reinforcement.
Low oil absorption value contributing to efficient formulation viscosity control and improved processing.
Consistent batch-to-batch quality ensured by Solvay’s stringent manufacturing standards and ISO-certified production.
GR-grade designation indicates suitability for applications requiring high purity and low heavy metal content.
Reinforcing filler in high-performance silicone rubber compounds for medical devices and seals.
Functional additive in specialty coatings requiring improved scratch resistance and matting control.
Viscosity modifier and anti-settling agent in solvent-based and high-solids industrial inks.
Pigment support and rheology controller in UV-curable adhesives and encapsulants.
Performance-enhancing component in flame-retardant cable jacketing compounds.
| Chemical Type | Precipitated amorphous silica |
| Product Form | Free-flowing white powder |
| Appearance | White, odorless, non-toxic granular powder |
| Primary Applications | Reinforcement, rheology control, and pigment support in elastomers, coatings, and adhesives |
| Key Features | High specific surface area, low residual sodium, controlled pH |
| Benefits | Improved dispersion stability, enhanced mechanical properties, reduced formulation viscosity |
| Bulk Density (g/cm³) | 0.35–0.45 |
| pH (10% aqueous slurry) | 6.0–7.5 |
Q1: What is the primary function of Solvay ZEOSIL 1085 GR Pigment in polymer systems?
A: Solvay ZEOSIL 1085 GR Pigment is a high-purity, surface-treated precipitated silica primarily used as a reinforcing filler and rheology modifier in thermoplastic and thermoset polymers. It enhances mechanical strength, improves dimensional stability, and contributes to controlled viscosity development during processing.
Q2: Is Solvay ZEOSIL 1085 GR Pigment suitable for use in food-contact or medical-grade applications?
A: Solvay ZEOSIL 1085 GR Pigment is manufactured under strict quality controls and meets general requirements for use in certain regulated applications; however, its suitability for food-contact or medical devices depends on the final formulation, processing conditions, and applicable regulatory assessments. Customers must conduct full compliance verification—including extractables testing and regulatory dossier review—prior to use in such applications.
Q3: How does Solvay ZEOSIL 1085 GR Pigment differ from standard fumed silica grades?
A: Unlike fumed silica, ZEOSIL 1085 GR is a precipitated silica with a more uniform particle size distribution and lower specific surface area, resulting in improved dispersibility and reduced abrasiveness in polymer melts. Its proprietary surface treatment also enhances compatibility with organic matrices and supports better processability in high-shear compounding operations.
Q4: What are recommended handling and storage practices for this pigment?
A: Store in a cool, dry location, protected from moisture and contamination. Keep containers tightly sealed when not in use. Due to its fine particulate nature, handle in well-ventilated areas and use appropriate personal protective equipment (e.g., NIOSH-approved respirator, gloves, safety goggles) to minimize inhalation or skin contact during manual transfer or dosing.
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