Paraffin

Selecting the right grade depends on the oil content and melting point. For the food and cosmetic industries, you must source Fully Refined Paraffin Wax, which typically has an oil content of less than 0.5% and undergoes rigorous hydro-treating to ensure it is odorless and non-toxic. For industrial applications like candle making or rubber processing, Semi-Refined Paraffin Wax (oil content 1.5% - 2%) is more cost-effective while still providing excellent structural integrity.

You should prioritize three main metrics: Melting Point, Oil Content, and Color (Saybolt scale). A melting point between 58°C and 60°C is standard for most candles to prevent warping in summer. Ensure the Saybolt color value is +28 to +30 for high-end applications to guarantee a pure white appearance. Always request a Certificate of Analysis (COA) from the supplier to verify these parameters against your specific requirements.

For exports to the US, ensure the product meets FDA 21 CFR 172.886 standards if it comes into contact with food. For the EU market, REACH registration is essential. Additionally, verify that the supplier provides a comprehensive Material Safety Data Sheet (MSDS), which is critical for international shipping and customs clearance to declare the chemical properties and safety protocols.

High oil content (found in Slack Wax) results in a lower melting point and softer texture, which is unsuitable for standalone candles but good for matches or lubricants. Low oil content (<0.5%) ensures the wax is hard, brittle, and has a high gloss, which prevents 'sweating' (oil leaching) in finished goods, especially when stored in warmer climates.

The biggest risk is quality inconsistency between batches. Some suppliers may mix lower-grade slack wax into fully refined batches to reduce costs. To mitigate this, use third-party inspection services (like SGS or Intertek) to perform container loading supervision and random sampling. Another risk is price volatility linked to crude oil markets; it is advisable to sign short-term fixed-price contracts or use hedging strategies.

Focus on volume-based pricing tiers. For paraffin, a 20ft container (approx. 21 tons) is the standard shipping unit; ordering in full containers significantly reduces the per-ton freight cost. Ask for Gold Member status verification on Made-in-China.com and request a sample for lab testing before committing to a bulk order. Negotiate for 30% deposit and 70% against the Bill of Lading (B/L) to protect your cash flow.

Paraffin is sensitive to temperature. Ensure the wax is packed in 50kg woven bags or 25kg cartons with inner plastic lining to prevent contamination. During sea freight, request stowage 'away from heat sources' and 'below deck' to prevent melting or deformation. Upon arrival, store in a cool, dry, and well-ventilated warehouse away from direct sunlight and oxidizing agents.

Always utilize Secured Trading Services offered by platforms like Made-in-China.com to ensure your payment is only released after the supplier provides proof of shipment. Verify the supplier's Business License and Export Permit specifically for chemical products. For large-scale enterprise buyers, conducting an on-site factory audit or a virtual VR factory tour is highly recommended to confirm production capacity.