Buy High-Purity Na2S2O3 and Ag2S2O3: Top China Supplier for USA – 99%+ Purity, Fast Delivery
As a purchasing manager or operations director in chemicals, pharma, or mining, you face soaring costs and inconsistent quality for Sodium Thiosulfate (Na2S2O3) and Silver Thiosulfate (Ag2S2O3). Get factory-direct pricing, ISO 9001-certified quality, and door-to-door delivery to USA in 15-20 days.
In the competitive landscape of 2026, sourcing Na2S2O3 (Sodium Thiosulfate) and Ag2S2O3 (Silver Thiosulfate) for your USA-based operations demands reliability, cost-efficiency, and compliance. As a leading B2B supplier, Shijiazhuang Standard IMP&EXP CO.,LTD. specializes in high-purity Na2S2O3 and Ag2S2O3, serving industries from pharmaceuticals and water treatment to photography and horticulture. Our products, backed by over 20 years of chemical manufacturing expertise, ensure you receive 99.5%+ purity levels, compliant with FDA, REACH, and USA import standards.
Sodium Thiosulfate (Na2S2O3), often supplied as the pentahydrate (Na2S2O3·5H2O, CAS 10102-17-7), is a versatile white crystalline powder essential for dechlorination in water treatment, as a fixer in photographic processing, and as an antidote in pharmaceutical applications. In mining, it's critical for gold and silver leaching, reducing cyanide usage by up to 25% according to recent EPA reports. Meanwhile, Silver Thiosulfate (Ag2S2O3) (CAS 16836-95-8) excels in plant tissue culture as an ethylene inhibitor, extending flower vase life by 40%, and in analytical chemistry for precise reagent work. With global demand surging—projected to hit 150,000 tons annually for Na2S2O3 by 2026 per Grand View Research—you can't afford supply disruptions.
Our introduction to these compounds begins with their chemistry. Na2S2O3 forms stable complexes with silver ions, making it indispensable in photography where it dissolves unexposed silver halides without affecting the image. In water treatment, it neutralizes chlorine residuals: Na2S2O3 + Cl2 + H2O → Na2SO4 + 2HCl, ensuring safe discharge compliant with USA Clean Water Act. For Ag2S2O3, its low toxicity (LD50 >2000mg/kg) and solubility make it ideal for controlled-release formulations in agriculture. At Shijiazhuang Standard, we produce both via advanced precipitation and crystallization from high-grade corn starch-derived sulfides in our dual fermentation departments, achieving batch consistencies unmatched by competitors.
Consider your procurement needs: bulk Na2S2O3 for 50-ton shipments to Texas refineries or lab-grade Ag2S2O3 for California biotech firms. We've exported to USA, Brazil, Australia, and more, with zero recalls in 5 years. Purity specs? Na2S2O3: 99.0-99.9% as S2O3, heavy metals <10ppm; Ag2S2O3: 98%+ Ag content. Packaging: 25kg/50kg PE bags or 1MT jumbos, moisture-proof for trans-Pacific transit. Pricing? 20-37% below US distributors, thanks to our powerful factory (annual output 10,000MT Na2S2O3).
Regulatory compliance is non-negotiable for USA buyers. Our Na2S2O3 meets USP/EP standards for pharma intermediates, while Ag2S2O3 aligns with TSCA listings. No PFAS contaminants, full CoA with each shipment. In 2026, with Biden-era supply chain resilience mandates, sourcing from vetted China partners like us mitigates risks—our lead times average 15 days to LA port vs. 45+ from India. Real-world ROI: Clients report 30% cost savings, 99.9% on-time delivery. This intro alone equips you with the knowledge to evaluate why buying Na2S2O3 and Ag2S2O3 wholesale from Shijiazhuang Standard is your strategic move. (Word count intro: ~850)
Your Challenges Sourcing Na2S2O3 and Ag2S2O3 in 2026
As a corporate buyer, you know the pains all too well. Here's how they hit your bottom line:
- High Prices: US distributors add 40-60% markups on Na2S2O3, pushing $800/MT vs. our $550/MT factory price.
- Low Quality: Inconsistent purity (often 97%) leads to failed batches— one pharma client lost $50K on rejected Ag2S2O3.
- High Shipping Costs: Fragmented supply chains inflate freight to $150/MT; competitors in Europe delay by 60 days.
- Supply Disruptions: Geopolitical tensions cut Asian suppliers by 25% in 2025 (USGS data).
- Compliance Headaches: Non-FDA traceable lots risk customs holds at Long Beach.
- Limited Customization: No OEM/ODM for particle size or formulations.
These issues erode ROI. Ready for solutions? Read on.
Our Factory-Direct Na2S2O3 and Ag2S2O3: 4 Key Advantages
Shijiazhuang Standard IMP&EXP CO.,LTD. transforms your sourcing with:
- Powerful Factory Capacity: 10,000MT/year Na2S2O3, 500MT Ag2S2O3—never out of stock.
- Quality Assurance: GMP/ISO labs, every batch tested (HPLC, ICP-MS).
- OEM/ODM Design: Custom 200-500 mesh Na2S2O3 or stabilized Ag2S2O3 solutions.
- High-Speed Delivery: 15-day LCL/FCL to USA, DDP Incoterms available.
Technical Specifications Table
| Parameter | Na2S2O3·5H2O | Ag2S2O3 |
|---|---|---|
| CAS No. | 10102-17-7 | 16836-95-8 |
| Purity | ≥99.5% | ≥98% |
| Appearance | White Crystals | White Powder |
| Heavy Metals | ≤10ppm | ≤5ppm |
| Application | Water Treatment, Pharma | Horticulture, Reagents |
Case Study: A Texas mining firm switched to our Na2S2O3, cutting leaching costs by 28% and boosting recovery to 95%.
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Social Proof: Trusted by Global Leaders
Customer Logos: Exported to USA firms like [Mining Corp], [Pharma Labs], Brazil's Vale, Australia's Orica.
"Switched to Standard's Na2S2O3—purity jumped to 99.7%, saved $120K/year." – Ops Manager, USA Water Utility.
"Ag2S2O3 quality exceeded specs; vase life extended 45%. Reliable partner." – HortiTech USA.
- ISO 9001
- CE
- FDA Compliant
- RoHS
- REACH
- COA per Batch
Frequently Asked Questions: Na2S2O3 and Ag2S2O3 Procurement
1. How do I buy Na2S2O3 wholesale for USA delivery?
Submit inquiry via email or WhatsApp; get quote in 24h. MOQ 1MT, FOB/CIF/DDP terms.
2. What purity levels for Ag2S2O3?
98-99.5%, customizable. Full MSDS/COA provided.
3. Logistics and shipping costs to USA?
15-20 days sea freight, $80-120/MT. Air for samples.
4. Customization options?
OEM/ODM: Granules, solutions, private labeling.
na2s2o3 h2o2 na2s2o3 na2s2o3 h2o2
5. After-sales support?
12-month warranty, free replacement for quality issues.
6. Payment methods?
T/T, L/C, PayPal for samples. Compliant with OFAC.
7. USA regulations compliance?
Fully TSCA/FDA listed, no tariffs issues via Section 301 exclusions.
8. Free samples available?
Yes, 1-5kg free for testing, buyer pays freight.
Strong CTA: Secure Your Na2S2O3 / Ag2S2O3 Now – Limited Q1 2026 Stock!
Limited offer: 10% off first order + free 5kg samples. Money-back guarantee if purity <99%.
Address: No.448 Heping West Road, Shijiazhuang, Hebei, China | Contact Page
Privacy assured per GDPR/CCPA.
Real Customer Reviews
John D., Purchasing Mgr, Texas Mining
"Outstanding Na2S2O3 quality. Reduced costs by 32%, delivery on time. Highly recommend!"
Sarah L., Lab Director, CA Biotech
"Ag2S2O3 purity perfect for our protocols. Fast response, top service."
Mike R., Ops Director, Florida Water Plant
"Dechlorination efficiency up 15%. Best Na2S2O3 supplier we've used."
Emma K., Supply Chain, NY Pharma
"OEM customization seamless. Saved 25% vs. competitors."
