Wholesale tung oil

When sourcing wholesale, prioritize 100% Pure Raw Tung Oil over 'Tung Oil Finishes' which often contain petroleum distillates. High-quality oil should have a pale amber color and a characteristic nutty aroma. Check for a specific gravity of 0.935 to 0.940 and a refractive index of approximately 1.517 to 1.521 at 25°C. Ensure the supplier provides a Certificate of Analysis (COA) confirming the iodine value is between 163 and 173, which indicates superior drying properties and purity.

Tung oil is a natural chemical product, so you must ensure it complies with REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) for the EU market or TSCA (Toxic Substances Control Act) for the US. Since it is often used on food-contact surfaces (like butcher blocks), verify FDA 21 CFR 175.300 compliance. Additionally, request a current Material Safety Data Sheet (MSDS/SDS) to understand flash points and handling requirements for international transit.

Cold-pressed extraction is the gold standard for premium wood finishing as it preserves the oil's natural properties and light color. Solvent-extracted oil is typically cheaper but may contain chemical residues and have a darker hue, making it more suitable for industrial paints or resins rather than fine furniture. For B2B buyers, clarifying the extraction process is vital to ensure the product meets the end-user's aesthetic and functional requirements.

Tung oil is highly reactive to oxygen. For wholesale quantities, ensure the oil is stored in airtight, opaque containers (preferably metal drums or IBC tanks with nitrogen blanketing). The shelf life is typically 12 to 24 months if stored in a cool, dark place. Buyers should negotiate for 'freshly pressed' batches and avoid purchasing old stock that may have begun to polymerize (thicken) inside the container.

The biggest risk is adulteration, where suppliers mix pure Tung oil with cheaper oils like soybean or linseed oil. To mitigate this, use third-party inspection services (like SGS or Intertek) to perform a 'Gas Chromatography' test before the balance payment is made. Another risk is leakage during transit; ensure the supplier uses UN-rated steel drums and proper palletization to prevent puncture or spillages in the shipping container.

Tung oil is a commodity influenced by crop yields in regions like China (the world's largest producer). Negotiate based on current market crop reports. For large volumes, seek FOB (Free On Board) terms to maintain control over shipping costs. Request a tiered pricing structure where a 5% to 10% discount is applied for orders exceeding 5 metric tons (MT). Always use Secure Payment services provided by reputable platforms like Made-in-China.com to protect your funds until the goods are verified.

While Tung oil is a natural oil, it is often classified as a combustible liquid if it has a low flash point or is mixed with thinners. Ensure the shipping documents include a Non-Hazardous Chemical Declaration if it is 100% pure to avoid unnecessary 'Dangerous Goods' surcharges. For shipping to the US or Europe, utilize Flexitanks for bulk liquid transport to reduce costs compared to individual drums, provided the buyer has the facilities to pump the oil out upon arrival.