Potassium citrate

Potassium Citrate is primarily categorized into Food Grade (FCC) and Pharmaceutical Grade (USP/BP/EP). For food applications, it must comply with E332 standards in Europe or FDA GRAS in the US. Pharmaceutical buyers must ensure the product meets USP (United States Pharmacopeia) or BP (British Pharmacopeia) monographs, which mandate stricter limits on heavy metals like Lead (<2ppm) and Arsenic (<3ppm). Always request a Certificate of Analysis (COA) for every batch to verify the assay purity (typically 99.0% - 101.0%).

Potassium Citrate is usually available as monohydrate crystals or white granular powder. For beverage production, high solubility and clarity are essential; it should be freely soluble in water (approx. 1.6g/ml) and almost insoluble in alcohol. If your application involves dry-blending (like supplement powders), specify the mesh size (e.g., 20-60 mesh) to ensure uniform mixing and prevent caking during storage.

Beyond grade-specific standards, suppliers should hold ISO 9001 for quality management and ISO 22000 or HACCP for food safety. For global market access, Kosher and Halal certifications are highly recommended as they expand consumer reach. If sourcing from China for the EU market, verify if the manufacturer has completed REACH registration to avoid customs delays.

Potassium Citrate is slightly deliquescent in moist air, meaning it absorbs water. It must be stored in a cool, dry, and well-ventilated area. Standard export packaging consists of 25kg kraft paper bags or plastic woven bags with a PE inner liner. For bulk industrial use, 500kg to 1000kg jumbo bags are more cost-effective. Ensure the packaging is hermetically sealed to prevent clumping.

To ensure transaction security, use Trade Assurance services provided by reputable platforms like Made-in-China.com. This protects your payment until delivery is confirmed. Additionally, conduct a factory audit or hire a third-party inspector (like SGS or Intertek) to perform a Pre-Shipment Inspection (PSI) to verify that the chemical composition matches the agreed specifications.

While Potassium Citrate is generally classified as non-hazardous for transport, you must still provide a Material Safety Data Sheet (MSDS) and a Non-Hazardous Chemical Certificate for customs clearance. For sea freight, ensure the container is moisture-proof. It is advisable to use FOB (Free On Board) terms if you have a reliable freight forwarder, as this gives you better control over shipping costs and schedules.

Chemical prices are sensitive to raw material costs (Citric Acid and Potassium Carbonate). Negotiate based on volume tiers; orders exceeding 20 metric tons (a full 20ft container) usually qualify for significant discounts. Typical lead times are 10-15 days. To secure stable pricing, consider signing annual framework agreements with suppliers on Made-in-China.com to hedge against market price fluctuations.