3. Key Chemical Indicators (Influencing Material Properties)
Chemical Purity:
Silicon Dioxide (SiO₂) and Magnesium Oxide (MgO) Content: Higher levels indicate superior purity, leading to improved insulation and heat resistance.
Calcium Oxide (CaO) Content: Excessive amounts may reduce aging resistance, especially in applications such as plastics.
Loss on Ignition (LOI): Represents the mass loss after high-temperature treatment, indicating volatile and impurity content. Lower values are desirable.
III. Supplier and Qualification Considerations
Supplier Qualifications:
Select established and reputable manufacturers, ideally those with owned mining resources, to ensure consistent and reliable material quality.
Required Documentation:
Request and review the following:
Certificate of Analysis (COA): Provides detailed chemical and physical specifications for each batch.
Material Safety Data Sheet (MSDS): Contains safety, handling, and toxicological information.
Asbestos Test Report: Essential for cosmetic and pharmaceutical grades; must be from a recent third-party test.
Relevant Certifications: Examples include ISO 9001, Cosmetics Production License, and REACH Registration (for EU markets).
Summary and Purchasing Guidelines
Define Application: Identify the intended use of the product.
Select Grade: Choose the appropriate grade (cosmetic, food, industrial) based on application requirements.
Set Specifications: Establish target ranges for key parameters (e.g., particle size, whiteness, SiO₂ content).
Identify Suppliers: Source multiple qualified suppliers and request samples along with all relevant documentation.
Test Samples: Perform lab tests (in-house or third-party) and practical trials to evaluate performance and safety.
Negotiate Terms: Finalize commercial details including pricing, packaging (e.g., 25 kg/bag), MOQ, and delivery schedule.
Sign Contract: Ensure all quality and technical standards are explicitly stated in the contract annex.
Why Choose Us?
Source Control: Rigorous ore selection guarantees high-purity raw materials with minimal impurities.
Advanced Processing: State-of-the-art grinding and classification technologies enable precise control over particle size distribution.
Quality Stability: Fully automated production ensures batch-to-batch consistency and reliability.
Comprehensive Support: Our technical team provides end-to-end assistance, from product selection to application troubleshooting.
Customized Solutions: Tailored products available with specific particle sizes, whiteness, and other properties to meet your unique needs.