Titanium dioxide chemical

Buyers must distinguish between Anatase and Rutile grades. Rutile TiO2 is preferred for outdoor applications due to its superior UV resistance and higher refractive index, while Anatase is often used in paper, ceramics, and indoor coatings. Key metrics include TiO2 content (typically ≥93% for high-grade), oil absorption (g/100g), and particle size distribution, which directly affects the opacity and tinting strength of the final product.

Request a Certificate of Analysis (COA) for every batch. Focus on *whiteness (L)**, dispersibility, and volatile matter at 105°C. For high-end coatings, ensure the product has undergone inorganic surface treatment (Alumina, Silica, or Zirconia) and organic treatment, as these treatments significantly improve weatherability and gloss retention.

Ensure the supplier complies with ISO 591-1:2000 standards for TiO2 pigments. For exports to the EU, REACH registration is mandatory. If the product is intended for food-contact packaging or cosmetics, it must meet FDA (21 CFR) or E171 (EU food additive) regulations, although buyers should stay updated on the evolving EU regulations regarding TiO2 classification.

Rutile grade is the industry standard for automotive coatings, architectural paints, and plastic masterbatches due to its durability. Anatase grade is widely used in rubber, chemical fibers, and printing inks where high whiteness but lower weather resistance is required. Specialized Nano-TiO2 is utilized for photocatalysis and high-end sunscreens.

The most significant risks include quality inconsistency between samples and bulk orders and price volatility due to raw material (ilmenite) costs. To mitigate this, use third-party inspection services (like SGS or Intertek) to verify the chemical composition before the balance payment is made. Always source from verified manufacturers on Made-in-China.com who hold ISO 9001 and ISO 14001 certifications.

TiO2 is typically packed in 25kg multi-layer paper bags or 500kg/1000kg jumbo bags. Ensure the supplier uses palletized shipping with shrink-wrap to prevent moisture ingress, as humidity can cause clumping and ruin dispersibility. For sea freight, clarify the Incoterms (FOB or CIF) and ensure the Material Safety Data Sheet (MSDS) is provided for customs clearance.

Negotiate based on annual volume commitments rather than one-off spot buys to secure stable pricing. Ask for a tiered pricing structure where the unit price drops as the order exceeds 20-ton (Full Container Load) increments. Additionally, discuss payment terms; while a 30% deposit is standard, established buyers can often negotiate Letter of Credit (L/C) or Open Account (O/A) terms to improve cash flow.

Check the supplier's Business License and Export License specifically for chemical products. On Made-in-China.com, look for the 'Audited Supplier' badge, which indicates the factory has undergone an on-site verification of its production capacity, R&D capabilities, and quality control systems.