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100Mesh
CENOLITE
2621900090
Hollow ceramic microspheres for paints and coatings designed to reduce coating density, improve flow and leveling, support thermal insulation, and extend film volume. This coating-oriented grade is suitable for architectural coatings, industrial paints, roof insulation coatings, putties, and surface finishing systems.
▸ SEPPE hollow ceramic microspheres for paints and coatings are lightweight aluminosilicate spheres selected for coating systems that require lower density, better flow, and improved film volume efficiency.
▸ The hollow structure contributes to thermal insulation, while the smooth spherical morphology supports dispersion, leveling, sanding, and spray application.
▸ This product is suitable for general coating formulations and can be supplied with customized mesh, density, pH, and low-iron requirements according to application targets.
▸ Lower Coating Density: Hollow ceramic particles reduce film weight while maintaining coating volume.
▸ Improved Flow & Leveling: Spherical particles reduce internal friction and support smoother application.
▸ Thermal Insulation Function: Hollow microspheres help reduce heat transfer in roof, wall, and functional insulation coatings.
▸ Low Iron Grade Available: Controlled iron content helps reduce color interference in white and light-colored coatings.
▸ Formulation Flexibility: Suitable for water-borne, solvent-borne, putty, filler, texture, and protective coating systems after compatibility testing.

▸ Architectural wall paints and decorative surface coatings
▸ Roof heat-insulation and reflective coating systems
▸ Industrial protective coatings and equipment coatings
▸ Putties, fillers, skim coats, and repair compounds
▸ Textured coatings and lightweight coating formulations

| Chemical Analysis (Typical) | |
| SiO₂ | 50-60% |
| Al₂O₃ | 25-40% |
| Fe₂O₃ | 1-6% / low iron grade available |
| CaO | 1-1.5% |
| Physical Properties | |
| Shape | Hollow spherical ceramic powder |
| Color | Light grey to white |
| Recommended Use | Paints, coatings, putties, and surface finishing |
| pH Value | 7.0 ± 1.0 typical |
| True Density | 0.70-0.90 g/cm³ |
| Particle Size | Coating mesh grade available |
| Iron Content | Low iron grade available |
▸ CENOSPHERE TDS (General) — for product introduction, customs declaration, and bidding documents.
▸ Coating Grade Specification Sheet — particle size distribution, pH, iron content, and coating-grade controls.
▸ 600 kg jumbo bags — approximately 40 bags per 40' High Cube FCL (total ~24 MT), depending on grade and loading plan.
▸ Custom packaging, palletizing, and private labeling are available upon request.
▸ Store sealed in dry conditions. Reliable container shipment is available to major ports worldwide.
▸ They can be evaluated in architectural coatings, industrial paints, thermal insulation coatings, putties, and surface finishing systems.
▸ Proper mesh selection and dosage help maintain surface smoothness. SEPPE can recommend a suitable coating grade based on film thickness and finish requirements.
▸ Yes. Neutral pH improves compatibility with resin, pigment, and additive systems.
▸ Yes. Low iron grade is available to help reduce yellowing and color interference.
▸ Yes. Samples, TDS, COA, and grade selection support are available for dispersion and compatibility trials.
▸ 0.9 g/cm3 Cenosphere for Paints And Coating
Contact SEPPE for product specifications, samples, OEM packaging, and bulk pricing.
Request a QuoteSEPPE operates a fully integrated ISO 9001:2015 certified quality management system for coating grade cenospheres. Quality control focuses on particle size consistency, low iron content, particle density, moisture, chemical composition, and dispersion performance for coating applications.
▸Our quality control process covers the key stages from raw material verification to final shipment, with acceptance criteria confirmed by the applicable TDS, COA, purchase specification, or agreed test plan.
04
| Test Parameter | Test Method | Specification |
|---|---|---|
| Particle Size Distribution | ISO 13320:2020 Laser Diffraction | D50: 45–60 μm D98: 105–140 μm |
| pH Value | ISO 787-9:2019 10% Aqueous Suspension | 7.0 ± 1.0 |
| Iron Content (reported as Fe₂O₃) | X-Ray Fluorescence (XRF) | < 6% |
| True Density (Particle Density) | ISO 12154:2014 Gas Displacement Pycnometry | 0.70–0.90 g/cm³ |
| Moisture Content (Matter Volatile at 105°C) | ISO 787-2:2021 105°C, 2 h | ≤ 0.3% |
| Chemical Composition | X-Ray Fluorescence (XRF) | SiO₂: 55–65% Al₂O₃: 27–33% |
| Dispersion Test | High-Speed Mixing + Hegman Gauge Agreed Coating System | According to the selected coating system and customer-approved test plan |
Testing note: Final specifications, test methods, acceptance limits, and testing frequency shall be confirmed in the applicable TDS, batch COA, purchase specification, or customer-approved test plan.
▸ Our laboratory equipment supports the coating-grade control parameters listed above:
• Laser Particle Size Analyzer – particle-size distribution by ISO 13320:2020.
• pH Meter – pH of a 10% aqueous suspension by ISO 787-9:2019.
• XRF Spectrometer – iron content and major oxide composition.
• Gas Pycnometer – particle density by gas displacement pycnometry in accordance with ISO 12154:2014.
• Drying Oven and Analytical Balance – matter volatile at 105°C by ISO 787-2:2021.
• High-Speed Disperser and Hegman Gauge – dispersion assessment under customer-agreed coating-system conditions.



▸ CENOLITE 910 quality control covers the following critical parameters:
• Particle size distribution – laser diffraction by ISO 13320:2020; D50: 45–60 μm and D98: 105–140 μm.
• Iron content (reported as Fe₂O₃) – controlled below 6% by XRF.
• pH value – 10% aqueous suspension by ISO 787-9:2019; 7.0 ± 1.0.
• True density (particle density) – gas displacement pycnometry by ISO 12154:2014; 0.70–0.90 g/cm³.
• Moisture content – matter volatile at 105°C by ISO 787-2:2021; ≤ 0.3%.
• Dispersion performance – evaluated with high-speed mixing and a Hegman gauge under the selected coating system and agreed test conditions.
▸ D50 = 45-60 μm, D98 = 105-140 μm, optimized for thin-film and industrial coatings.
▸ Low iron (≤6%) ensures lighter color and better opacity, especially for white or light-colored paints and primers.
▸ Dispersion can be evaluated using high-speed mixing and a Hegman gauge under a customer-agreed coating system, addition level, mixing speed, test duration, and acceptance criterion.
▸ Yes, each shipment includes a digital Certificate of Analysis with batch-specific test results.
▸ Yes, we offer custom cuts (e.g., D50=30-40μm for high-gloss finishes) upon request.
Contact our coating specialists to discuss custom PSD, iron content targets, or to request batch samples for your formulation.
Contact Coating Team