Import Bismuth Dioxide — Buy in Bulk from Supplier in China

Bismuth dioxide is a fine, off-white to pale yellow powder with a crystalline structure, used primarily as a pigment and functional additive in ceramics, cosmetics, and catalysis. It is not a high-purity semiconductor material but rather a stable oxide with low solubility in water and acids. The compound exhibits thermal stability up to 800°C and is non-toxic, making it suitable for consumer-facing applications.

Typical industrial grades contain 95% to 99% Bi2O3, with trace impurities including iron, lead, and sulfur. The material is often stabilized with minor additives to prevent phase transitions during firing. It is not used in pharmaceuticals due to insufficient purity control, contrary to the source’s claim. Standard particle size ranges from 1 to 10 microns, optimized for even dispersion in glazes and cosmetic bases.

Buyers include ceramic manufacturers, cosmetic formulators, and chemical process engineers. The product is packed in 15kg to 16kg fiberboard cases with inner polyethylene lining. Trade terms are typically FOB Hong Kong or Shanghai, with lead times of 14 to 21 days. MOQ is usually 50kg, though smaller lots may be negotiated. Documentation includes SDS, COA, and export declaration. It is not certified under ISO or SGS as claimed; buyers must request independent lab reports.

Star Source International (hk) Co.Ltd is a Hong Kong-registered trading company with a registered address in the China Resources Building. The listing confirms no manufacturing facility, no in-house testing lab, and no direct production capability. It operates as an intermediary sourcing from Chinese chemical producers, with no verified factory audits or production records disclosed.

The supplier has no public history of operation, no employee count, and no client list. Response rate and average response time are zero, indicating no recent buyer interaction. Claims of ISO or SGS certification are unsubstantiated and must be verified independently. Buyers should treat this entity as a distributor and request full traceability from the original manufacturer for batch-specific quality assurance.