Eddha

The most critical factor is the ortho-ortho (o-o) isomer content, which typically ranges from 1.2% to 4.8%. Higher o-o levels ensure greater stability in alkaline soils (pH 7-9) and longer-lasting iron availability. You should also verify the total iron content (usually 6%), solubility (100% water-soluble), and pH stability range to ensure it meets your specific agricultural needs.

Request a Certificate of Analysis (COA) and look for HPLC (High-Performance Liquid Chromatography) test reports to confirm the isomer distribution. High-quality EDDHA should appear as dark red to black micro-granules or powder with no visible impurities. Ensure the heavy metal content (Pb, Cd, As) is well within the safety limits defined by international agricultural standards.

EDDHA is primarily used to treat and prevent iron chlorosis (yellow leaf disease) in high-value crops like citrus, grapes, strawberries, and greenhouse flowers. Unlike EDTA-Fe, EDDHA remains highly effective in calcareous and alkaline soils, promoting chlorophyll synthesis, improving fruit set, and increasing overall crop yield.

Suppliers should adhere to ISO 9001 for quality management and ISO 14001 for environmental management. For European markets, ensure the product is REACH compliant. Additionally, check if the manufacturer provides a Material Safety Data Sheet (MSDS) to guide safe handling, storage, and transport.

The primary risk is adulteration or low isomer content, where a supplier claims 4.8% o-o but delivers 1.2%. To mitigate this, use third-party inspection services (like SGS or Intertek) before shipment. Another risk involves moisture absorption during sea transit; ensure the supplier uses moisture-proof, multi-layer packaging (e.g., 25kg kraft bags with PE inner liners).

Focus on volume-based pricing tiers; ordering in full container loads (FCL) can significantly reduce the unit price compared to LCL. Discuss payment security by utilizing Escrow services or Letter of Credit (L/C) for large first-time orders. Ask for free samples (excluding freight) to conduct lab testing before committing to a bulk purchase.

EDDHA is generally classified as non-hazardous for transport, but you must provide the HS Code (typically 292249) to your customs broker. Ensure the supplier provides a Non-Hazardous Chemical Declaration to avoid delays at the port. For shipping to regions with strict agricultural laws, verify if a Phytosanitary Certificate or specific import permits are required by your local Ministry of Agriculture.

Prioritize Audited Suppliers on Made-in-China.com who have undergone on-site verification. Always communicate through the official platform messaging system to maintain a record of agreements. Verify the supplier's factory capacity and export history to ensure they can handle long-term, stable supply without compromising quality.