Aluminum hydroxide

Buyers must prioritize purity levels (typically 99%+) and particle size distribution (D50 value). For the flame retardant industry, a fine or ultra-fine precipitated grade is required to ensure even dispersion in polymers. For chemical synthesis or water treatment, the solubility in acids and alkalis and the iron (Fe) content are critical, as high iron levels can contaminate the final chemical product. Always request a Certificate of Analysis (COA) to verify the whiteness index and moisture content (usually <0.5%).

As a chemical product, it must be accompanied by a comprehensive Material Safety Data Sheet (MSDS) or Safety Data Sheet (SDS) compliant with GHS standards. For export to the EU, REACH registration is essential. If the product is used in food packaging or pharmaceuticals, it must meet FDA or USP/EP standards. Ensure the supplier holds ISO 9001 for quality management and ISO 14001 for environmental management to guarantee stable production and regulatory alignment.

Aluminum Hydroxide is available in dry powder, wet cake, or slurry forms. Dry powder is the most common for cross-border trade due to lower shipping weights, but it requires moisture-proof packaging (PE-lined bags) to prevent clumping. Wet cake may be more economical for short-distance regional trade but incurs higher freight costs due to water weight. For high-end plastics, surface-treated (silane or fatty acid coated) grades are preferred to improve interfacial adhesion and processing fluidity.

The biggest risks involve quality inconsistency between batches and moisture absorption during sea transit. To mitigate this, use third-party inspection services (like SGS or Intertek) to perform pre-shipment sampling. Ensure the contract specifies moisture-proof container lining and palletized packaging to prevent bag breakage and contamination during multi-modal transport.

Pricing is heavily influenced by the cost of raw bauxite and energy prices. It is advisable to negotiate formula-based pricing for long-term contracts or seek volume-based discounts (typically 5-10% for FCL orders). For new suppliers found on Made-in-China.com, start with a paid sample (5-10kg) to test in your lab before committing to a full container. Use L/C (Letter of Credit) or Trade Assurance for the first few transactions to secure payment against shipping documents.

While Aluminum Hydroxide is generally classified as non-hazardous for transport, you must provide a 'Certification for Safe Transport of Chemical Goods' to the shipping line to avoid delays. Ensure the HS Code (typically 28183000) is correctly declared to align with the destination country's tariff schedule. For shipping to regions with high humidity, specify the use of desiccants inside the container to maintain the powder's free-flowing properties.