Acid activated clay

When evaluating Acid Activated Clay (also known as Activated Bleaching Earth), you must prioritize Decolorizing Power, which indicates the efficiency in removing pigments from oils. Key metrics include Free Acidity (0.2% - 1.0%), Moisture Content (typically 8% - 12%), and Particle Size Distribution (usually 200-300 mesh). For food-grade applications, ensure the pH value is stabilized between 2.5 and 4.5 to prevent oil degradation during the refining process.

Different oils require specific clay properties. For vegetable oil refining (like palm, soybean, or sunflower oil), focus on chlorophyll removal efficiency and filtration rate. If sourcing for mineral oil or lubricant recycling, the clay must have high adsorption capacity for heavy metals and oxidation products. Always request a Certificate of Analysis (COA) that matches your specific industry standards, such as Food Safety System Certification (FSSC 22000) for edible oils.

Since Acid Activated Clay is a chemical product derived from bentonite, it must comply with REACH regulations for the European market and FDA/GRAS (Generally Recognized as Safe) status for US food contact. Ensure the supplier provides a comprehensive Material Safety Data Sheet (MSDS). For cross-border logistics, verify if the product is classified as non-hazardous under IMO/DGD regulations to avoid shipping delays.

Request a pre-shipment sample (2-5kg) to conduct a laboratory bleaching test using your crude oil stock. Evaluate the filtration speed; a slow filtration rate can bottleneck your production. Additionally, check for oil retention levels—high-quality clay should leave minimal oil in the spent cake (typically less than 20-25%) to reduce production losses. Utilize third-party inspection services like SGS or Intertek for loading supervision.

The biggest risks are moisture absorption during sea transit and batch-to-batch inconsistency. Acid Activated Clay is highly hygroscopic; if the packaging is not moisture-proof (PE-lined bags), the decolorizing activity will drop significantly. To mitigate this, specify double-layer UV-resistant PP woven bags and ensure containers are fitted with desiccant silica gel packs.

Focus on Total Cost of Ownership (TCO) rather than just the price per ton. Negotiate based on annual volume commitments to secure a 5-10% discount. Ask the supplier if they offer customized activation levels tailored to your crude oil's acid value, which can reduce the dosage required by 15%, effectively lowering your operational costs even if the unit price is slightly higher.

Due to the heavy weight of clay, FOB or CIF terms are standard. Use Secured Payment services on Made-in-China.com to ensure funds are only released after the Bill of Lading (B/L) and Quality Inspection Report are verified. For shipping to regions with high humidity, prioritize top-tier shipping lines to minimize transit time and potential exposure to damp environments.