How to Select Talcum Powder-2
3. Chemical Indicators (Influencing Material Properties)
Chemical Purity:
Silicon dioxide (SiO₂) and magnesium oxide (MgO) content: Higher SiO₂ and MgO content indicate higher purity, resulting in better insulation and heat resistance.
Calcium oxide (CaO) content: Excessive CaO content may negatively impact the aging resistance of products such as plastics.
Loss on Ignition (LOI): This refers to the mass loss after high-temperature ignition and reflects the content of volatile matter and impurities in talcum powder. The lower the value, the better.
III. Supplier and Qualification Considerations
Supplier Qualifications: Choose reputable, established manufacturers, preferably those with their own mines, for more consistent quality.
Product Certifications and Reports: Be sure to request and review the following documents:
COA (Composition Analysis Report): This serves as the "identity card" for this batch of product, listing all key chemical and physical specifications.
MSDS (Material Safety Data Sheet): Provides information on material safety, toxicology, and more.
Asbestos Testing Report: For cosmetic and pharmaceutical grade products, a recent third-party testing report is required.
Related Certifications: Such as ISO9001 Quality Management System Certification, Cosmetics Production License, and REACH Registration (for EU exports).
Summary and Purchasing Process Recommendations
Purpose: Define your product's intended purpose.
Grade: Determine the required grade (cosmetic, food, or industrial) based on the intended use.
Determine the performance indicators: Determine the ranges for key indicators (e.g., mesh size, whiteness, SiO₂ content).
Supplier Search: Identify multiple qualified suppliers and request samples and the aforementioned key documents.
Sample Testing: Conduct laboratory testing (self-testing or third-party testing) and field testing (pilot and pilot) on samples to verify their effectiveness and safety.
Partner Negotiation: Confirm commercial terms such as price, packaging (e.g., 25kg/bag), minimum order quantity (MOQ), and delivery time.
Contract Signing: Clearly include quality and technical indicators in the contract appendix as acceptance criteria.
Reasons to Choose Us:
Source Control:Strict ore screening ensures pure raw materials with low impurities.
Advanced Processing:Ultra-fine grinding and classification technologies are used to precisely control particle size distribution.
Stable Quality:Fully automated production ensures high consistency and reliability in every batch.
Customization:We offer customized product solutions with varying specifications (particle size, whiteness, etc.) tailored to your needs.
