Certificate of Analysis-COA
Particle size detection
screennumber | standardvalue | Measuredvalue |
+20# | 0% | 0 |
+30# | ≤25% | 13.5% |
+35# | ≥45% | 63.5% |
+35# +40# | ≥65% | 84.0% |
-45# | ≤3% | 1.4% |
Chemical composition detection
chemicalcomposition | standardvalue | Measuredvalue |
Al2O3 | ≥99.2% | 99.65% |
Na2O | ≤0.4% | 0. 19% |
Fe203 | ≤0.1% | 0.04% |
SiO2 | ≤0.1% | 0.03% |
Applications
1. For Aluminum Smelting And Metallurgy: Aluminum oxide (alumina, Al2O3, CAS 1344-28-1) is the primary feedstock for the Hall-Heroult electrolysis process that produces aluminum metal, making it an essential raw material for primary aluminum smelters worldwide.
2. For Refractories And High-Temperature Materials: With excellent thermal stability and heat resistance, alumina is used to manufacture refractory bricks, castables and high-temperature ceramics that perform reliably in furnaces, kilns and other demanding thermal processes.
3. For Abrasives And Polishing: Aluminum oxide is a hard, durable abrasive used in grinding wheels, sanding media and polishing powders for metals, glass and ceramics, delivering consistent material removal and surface finishing across industrial applications.
4. For Activated Alumina Desiccants And Catalyst Supports: Activated alumina offers a large surface area and porous structure, making it a proven desiccant and adsorbent for drying gases and liquids, as well as a widely used catalyst support in petrochemical and chemical processing.
5. For Advanced Ceramics And Electronics: High-purity alumina is used in advanced ceramics, electrical insulation and electronic substrate applications, where its dielectric properties, hardness and chemical stability support reliable performance in demanding components.
Quality Assurance
Every batch of chemicals leaves our factory with complete laboratory documentation — not a promise, but verifiable test data. From incoming raw material inspection to finished-goods release, each batch is tested against published specifications, and a Certificate of Analysis (COA) accompanies every single shipment. What you order is exactly what we test — and what we ship.
Tested by our in-house ISO 9001:2015 laboratory. Verified independently by third-party labs on request (SGS / BV / Intertek). Traceable from raw material to your warehouse.
Packaging
Woven bag
Kraft paper bag
Ton Bags
Export-grade packaging, custom labels
Solids (woven bags/cardboard drums/ton bags)
Liquids (plastic drums/IBC/ISO tanks)