Lead tetroxide

Lead Tetroxide, commonly known as Red Lead (Pb3O4), is primarily used in the manufacture of batteries (lead-acid), anti-corrosive primers, and technical glass (crystal and optical glass). In the battery industry, it acts as a high-activity additive for positive plate pastes, significantly improving initial capacity. In the coatings industry, it serves as a powerful rust-inhibitive pigment that protects steel structures through electrochemical passivation.

Buyers must focus on purity levels (typically ≥97% or ≥98%), PbO2 content, and particle size (fineness). For the battery industry, the apparent density and acid absorption value are critical for paste stability. For glass and ceramics, low impurity levels of iron (Fe) and copper (Cu) are essential to prevent unwanted coloration of the final product.

As a hazardous substance, Lead Tetroxide must comply with the Globally Harmonized System (GHS) for classification and labeling. Suppliers must provide a comprehensive Material Safety Data Sheet (MSDS). For international trade, ensure the product meets ISO 512 standards for red lead pigments. Buyers in the EU must ensure compliance with REACH regulations, while US buyers should check TSCA (Toxic Substances Control Act) status.

Prioritize suppliers with ISO 9001:2015 Quality Management Systems. Request a Certificate of Analysis (COA) for every batch to verify consistency. It is highly recommended to source from manufacturers listed on Made-in-China.com who offer third-party inspection reports (such as SGS or BV) to confirm that the chemical composition matches the technical data sheet.

Lead Tetroxide is classified as a Class 6.1 Toxic Substance under the UN Model Regulations (UN No. 1479 or 2291 depending on formulation). It must be packed in UN-approved packaging, typically multi-layer moisture-proof bags or steel drums with inner liners. Shipping must be handled by certified dangerous goods (DG) forwarders, and the vessel must have a Dangerous Goods Declaration.

Use secure payment terms such as Letter of Credit (L/C) or trade assurance services provided by platforms like Made-in-China.com. Avoid full advance payments to unknown entities. Conduct a factory audit or hire a local agent to verify the supplier's Production License for Hazardous Chemicals to ensure they are a legitimate manufacturer and not an unlicensed middleman.

The most common issues are incorrect HS Code classification and missing environmental permits. Ensure the HS Code (typically 2824.90) is consistent across all documents. Some countries require an Import License for Toxic Substances. Always verify the specific import duties and anti-dumping duties applicable to lead oxides in your destination country to avoid unexpected costs.

Prices for Lead Tetroxide are closely tied to the London Metal Exchange (LME) lead prices. Negotiate a formula-based pricing model if you plan on long-term procurement. While standard MOQs are often 1-5 metric tons, you can negotiate smaller trial orders by emphasizing future volume potential. Always ask for tiered pricing based on 20ft container loads (FCL) to maximize shipping cost-efficiency.