Litharge

When purchasing Litharge, the purity level (typically 99% or higher) is the most critical factor. For the glass and ceramics industry, ensure the iron (Fe) content is extremely low (less than 0.001%) to prevent discoloration. For battery manufacturing, the metallic lead (free lead) content must be strictly controlled, usually below 0.05%, to ensure chemical stability. Additionally, verify the particle size distribution (mesh size), as finer powders offer better reactivity in chemical processes.

As a lead-based chemical, Litharge is classified as a hazardous material (UN 2291). Suppliers must provide a Material Safety Data Sheet (MSDS) or Safety Data Sheet (SDS) compliant with GHS standards. For international trade, ensure the manufacturer adheres to ISO 9001 for quality management and ISO 14001 for environmental management. If exporting to Europe, the product must be REACH compliant, and for the US, it must meet TSCA (Toxic Substances Control Act) requirements.

Request a Certificate of Analysis (COA) for every batch to verify chemical composition. A reliable supplier should offer third-party inspection reports from agencies like SGS or Intertek. It is also vital to check the packaging integrity; Litharge is moisture-sensitive, so it should be packed in multi-layer moisture-proof bags (PP/PE bags) or steel drums to prevent carbonation and clumping during transit.

Litharge is widely used in lead-acid battery plates, lead glass (crystal), ceramic glazes, and PVC stabilizers. If you are in the refining or assaying industry, you should prioritize 'Assay Grade' Litharge which is gold-free and silver-free. For the rubber industry, look for 'Canary Grade' or specific calcined versions that act as effective vulcanizing agents.

Litharge is a Class 6.1 Toxic Substance. You must use a freight forwarder experienced in Dangerous Goods (DG) handling. Ensure the supplier provides IMDG-compliant labeling and secure palletization. Shipping costs will be higher than general cargo due to specialized storage requirements and mandatory hazardous material surcharges.

Utilize secure payment methods and consider platforms like Made-in-China.com, which offer trade security services to protect your funds until delivery. Always conduct a factory audit (either in person or via a third-party) to confirm the supplier has the legal environmental permits to process lead, as many small factories are shut down due to environmental non-compliance.

The price of Litharge is heavily tied to the London Metal Exchange (LME) lead prices. Avoid fixed-price long-term contracts unless they include a price adjustment formula based on LME fluctuations. Be wary of prices significantly below market value, as this often indicates recycled lead impurities or lower-than-stated purity levels.

Check the HS Code (typically 282410) for your specific country to determine import tariffs. Many countries impose anti-dumping duties or specific environmental taxes on lead products. Ensure all customs declarations accurately reflect the chemical nature of the product to avoid heavy fines or seizure of goods at the border.