Product Overview & China Production Capacity
Anhydrous Sodium Carbonate (Soda Ash, CAS 497-19-8, molecular formula Na₂CO₃, MW 105.99) is a fundamental alkaline excipient used across pharmaceutical manufacturing as a pH adjuster, buffering agent, and alkalizing agent in oral, topical, and parenteral formulations. It serves as a key component in effervescent tablet systems and is widely employed in API synthesis as a reaction medium modifier.
China is the world’s largest soda ash producer with annual output exceeding 30 million metric tons, representing over 45% of global production. Our pharmaceutical-grade sodium carbonate line in Henan Province has a dedicated capacity of 80,000 MT/year, producing ultra-high-purity material refined specifically for pharmaceutical and food-grade applications from natural trona deposits.
Manufacturing Standards & Quality Assurance
Our production facility operates under quality certification with ISO 9001:2015 quality management. The product conforms to USP/NF, EP, BP, JP, and ChP monograph requirements. Advanced purification processes including multi-stage recrystallization and calcination ensure exceptionally low levels of chloride, sulfate, and trace metal impurities.
Quality control testing covers assay by acid-base titration, loss on drying, insoluble substances, chloride, sulfate, phosphate, silicate, aluminum, iron, calcium, magnesium, potassium, arsenic, and heavy metals. Microbial limit testing is performed per pharmacopeial requirements. Full batch documentation and COAs accompany every shipment.
Technical Specifications
| Parameter | Specification |
|---|---|
| Appearance | White granular powder, hygroscopic |
| Assay (Na₂CO₃, dried basis) | 99.5–100.5% |
| Loss on Drying | ≤1.0% |
| Chloride (Cl⁻) | ≤0.005% |
| Sulfate (SO₄²⁻) | ≤0.004% |
| Iron (Fe) | ≤10 ppm |
| Heavy Metals (as Pb) | ≤10 ppm |
| Arsenic (As) | ≤2 ppm |
| Insoluble Substances | ≤0.01% |
| pH (5% solution, 25°C) | 11.3–11.7 |
Packaging & Export Logistics
Supplied in 25 kg PE-lined woven bags, 500 kg jumbo bags, or 1,000 kg FIBCs with moisture-barrier liners. Due to its hygroscopic nature, moisture-proof packaging with desiccant is standard. Store in sealed containers in a dry environment at 15–25°C. Shelf life is 36 months under proper storage conditions. Non-hazardous for transport (non-DG).
We export from Qingdao, Lianyungang, and Shanghai ports with established freight forwarding partnerships offering competitive ocean and air freight rates. LCL and FCL shipping available with door-to-door delivery options for major pharmaceutical markets worldwide.
China Supply Advantage
China’s dominant position in global soda ash production translates to unmatched pricing competitiveness for pharmaceutical-grade Anhydrous Sodium Carbonate — typically 40–55% below European producers. Our access to natural trona resources and energy-efficient Hou’s process technology delivers both cost and environmental advantages.
MOQ is 500 kg with standard lead times of 5–7 business days. We maintain 500+ MT ready stock for immediate dispatch. Volume discounts are available for annual contracts of 10 MT and above. Our export team handles all regulatory documentation and can assist with import compliance for your destination country. Contact us for a competitive quotation.