Product Overview & China Production Capacity
Ammonium Sulfate (CAS 7783-20-2, molecular formula (NH₄)₂SO₄, MW 132.14) is an inorganic salt widely used in pharmaceutical manufacturing as a precipitation agent for protein purification, a nitrogen source in fermentation media, and a stabilizing excipient in parenteral formulations. Its high water solubility (76.4 g/100 mL at 25°C) and well-characterized buffering properties make it indispensable across biopharmaceutical downstream processing and cell culture applications.
China currently produces over 6 million metric tons of ammonium sulfate annually, accounting for approximately 30% of global output. Our manufacturing facility in Shandong Province operates dedicated pharmaceutical-grade production lines with an annual capacity exceeding 50,000 MT of high-purity material, ensuring stable year-round supply for international pharmaceutical buyers.
Manufacturing Standards & Quality Assurance
Our ammonium sulfate production facility holds quality certification and operates under ISO 9001:2015 quality management systems. Every batch undergoes rigorous quality control testing in our CNAS-accredited laboratory. The product complies with Chinese Pharmacopoeia (ChP), USP/NF, and EP monograph specifications, with full traceability from raw material sourcing through finished product release.
Quality control protocols include ICP-OES heavy metals screening, Karl Fischer moisture analysis, ion chromatography for chloride and sulfate assays, and endotoxin testing for parenteral-grade material. Each shipment is accompanied by a comprehensive Certificate of Analysis (COA) with batch-specific data, and we support regulatory filings including Drug Master Files (DMFs) for international registration.
Technical Specifications
| Parameter | Specification |
|---|---|
| Appearance | White crystalline powder or granules |
| Assay ((NH₄)₂SO₄) | ≥99.0% |
| pH (5% solution) | 4.5–6.0 |
| Moisture (Karl Fischer) | ≤0.2% |
| Chloride (Cl⁻) | ≤0.005% |
| Heavy Metals (as Pb) | ≤10 ppm |
| Iron (Fe) | ≤5 ppm |
| Residue on Ignition | ≤0.1% |
| Insoluble Matter | ≤0.01% |
Packaging & Export Logistics
Pharmaceutical-grade Ammonium Sulfate is available in 25 kg polyethylene-lined kraft bags, 500 kg and 1,000 kg bulk bags (FIBCs) with inner PE liners, and custom packaging upon request. All packaging meets international transport standards and is labeled according to GHS requirements. The product should be stored in a cool, dry, well-ventilated area at temperatures below 30°C, away from incompatible materials. Shelf life is 36 months from the date of manufacture when stored under recommended conditions.
We ship from major Chinese ports including Shanghai, Qingdao, and Tianjin, with average ocean freight transit times of 15–25 days to most global destinations. Full container load (FCL) and less-than-container load (LCL) options are available, with all necessary export documentation including MSDS, COA, and phytosanitary certificates provided.
China Supply Advantage
Sourcing pharmaceutical-grade Ammonium Sulfate directly from our China facility delivers significant cost advantages — typically 30–40% below Western European and North American manufacturers — without compromising quality or regulatory compliance. Our vertically integrated supply chain, from raw sulfuric acid and ammonia sourcing to finished excipient production, ensures both price stability and supply security.
Minimum order quantity starts at 500 kg, with production lead times of 7–10 business days for standard grades. We maintain safety stock of 200+ MT for rapid dispatch. Our export team provides end-to-end logistics support, documentation assistance, and dedicated account management for long-term supply partnerships. Contact us today for a competitive quotation tailored to your specific volume and quality requirements.