Alkyl naphthalene

Alkyl Naphthalene (AN) is primarily used as a high-performance synthetic base oil (Group V) in the lubricant industry. It is frequently blended with PAO (Polyalphaolefins) to improve additive solubility, thermal stability, and hydrolytic stability. Common scenarios include high-temperature chain oils, circulating oils, grease formulations, and heat transfer fluids where mineral oils fail to meet performance benchmarks.

Buyers must focus on Kinematic Viscosity (typically at 40°C and 100°C) to ensure compatibility with their formulation. Other critical parameters include the Viscosity Index (VI), Flash Point (should be >200°C for safety), and Pour Point. For specialized applications, the Aniline Point is vital as it indicates the fluid's solvency power for additives and its effect on seal swelling.

Suppliers must provide a comprehensive Safety Data Sheet (SDS/MSDS) compliant with GHS (Globally Harmonized System). For international trade, ensure the product is registered under REACH (EU) or TSCA (USA) if applicable. Additionally, verify the CAS Number (e.g., 68424-96-4 or similar) to confirm the exact chemical identity and prevent the procurement of substandard substitutes.

Compared to Esters, Alkyl Naphthalene offers superior hydrolytic stability, meaning it does not break down easily in the presence of moisture. It also provides excellent oxidative stability and better seal compatibility. While Esters are often more biodegradable, AN is preferred for long-drain intervals and closed systems where water contamination is a risk.

Alkyl Naphthalene is usually shipped in ISO Tanks, IBC Totes (1000L), or 200L Steel Drums. Ensure the supplier uses UN-certified packaging to prevent leakage. When shipping to international markets, confirm the HS Code (typically 2902.90) to determine accurate customs duties and verify if the product is classified as 'Dangerous Goods' (DG) for maritime transport.

Always request a Pre-Shipment Inspection (PSI) and a Certificate of Analysis (COA) for every batch. For large-scale contracts, it is highly recommended to use third-party testing services (like SGS or Intertek) to verify that the viscosity and purity levels match the agreed-upon specifications before the final payment is released.

Prices for AN are often tied to raw material costs (naphthalene and olefins). Buyers should negotiate based on volume-based pricing tiers and consider long-term supply agreements to hedge against market volatility. On platforms like Made-in-China.com, look for 'Diamond Members' or 'Audited Suppliers' to ensure you are dealing with reputable manufacturers rather than small-scale traders.

Utilize Secured Payment services provided by professional platforms to ensure funds are only released upon proof of shipment (Bill of Lading). Avoid direct wire transfers to unknown accounts. Ensure the Incoterms (e.g., FOB, CIF, or CFR) are clearly defined in the sales contract to establish exactly when the risk transfers from the seller to the buyer.