Sodium Thiosulfate Pentahydrate: High-Purity Supplier for USA Industries – Reduce Costs by 25% with Fast Delivery

As a purchasing manager in water treatment, pharmaceuticals, or mining, you face high prices and unreliable quality from suppliers. Our sodium thiosulfate pentahydrate delivers 99% purity, ISO-certified, shipped from China to USA in 7-14 days.

Comprehensive Guide to Sodium Thiosulfate Pentahydrate: Properties, Uses, and Sourcing for USA Buyers

Sodium thiosulfate pentahydrate, chemically known as Na₂S₂O₃·5H₂O, is a versatile inorganic compound widely used across industries. This crystalline salt appears as large, colorless, monoclinic crystals or powder, with a density of 1.69 g/cm³ and high solubility in water (about 70 g/100 mL at 20°C). Its molecular weight is 248.18 g/mol, making it efficient for bulk applications.

In the USA market, demand for sodium thiosulfate pentahydrate surges in water treatment, where it serves as a dechlorinator, neutralizing chlorine residuals in wastewater and drinking water systems. According to EPA guidelines, it's preferred over sulfites for its stability and lower corrosion risk. In pharmaceuticals, it's an antidote for cyanide poisoning and used in nephroprotectant therapies during cisplatin chemotherapy, complying with USP standards.

Photography enthusiasts and labs rely on it as a fixer in film development, removing unexposed silver halides. Mining operations, especially gold extraction, use it as a non-toxic alternative to cyanide leaching, aligning with 2026 environmental regulations like those from the Bureau of Land Management. Food processing employs it as an antioxidant (E539), while analytical chemistry uses it for iodine titrations.

Historically, sodium thiosulfate pentahydrate was first synthesized in the 19th century from sodium sulfite and sulfur. Today, production involves reacting sodium sulfite with sulfur in aqueous solutions, followed by crystallization. At Shijiazhuang Standard IMP&EXP CO.,LTD., our state-of-the-art fermentation and crystallization departments ensure 99%+ purity, using corn starch-derived raw materials for sustainable sourcing.

Key physical properties include a melting point of 48°C (dehydrates to anhydrous form) and pH of 6.0-7.5 in 10% solution. It's stable under normal conditions but decomposes at 300°C. Safety data: Non-flammable, low toxicity (LD50 oral rat >5000 mg/kg), but handle with gloves to avoid skin irritation. Storage requires cool, dry places away from acids to prevent sulfur dioxide release.

For USA importers, regulatory compliance is critical. Our product meets FDA 21 CFR 184 for food use, USP-NF for pharma, and REACH for exports. We provide CoA (Certificate of Analysis), MSDS, and Halal/Kosher certifications. Typical packaging: 25kg/50kg PP bags or 1000kg IBC drums, FOB Tianjin port.

Market trends project 5% CAGR through 2026, driven by water purification needs post-2025 infrastructure bills. Pricing fluctuates $800-1200/MT FOB China, but our direct factory supply cuts 20-30% vs. distributors. Compared to competitors emphasizing low price but poor quality, we prioritize batch consistency via HPLC testing.

Applications breakdown:

• Water Treatment (40% market): 1-5 ppm dosage dechlorinates effectively, reducing THM formation by 95%.
• Pharma (25%): IV solutions at 30% w/v for cyanide detox.
• Mining (20%): 0.1-0.5M solutions leach gold 90% efficiently.
• Others (15%): Bleaching paper, chrome plating, gold testing.

Purity grades: Technical (98%), Photo (99%), Pharma (99.5%). Our OEM/ODM services customize particle size (10-100 mesh) and labeling. With 20+ years exporting to USA, Brazil, Australia, we've shipped 10,000+ MT annually.

Environmental benefits: Biodegradable, zero VOCs, supports green chemistry. ROI example: A mid-size water plant saves $50K/year switching to our bulk supply. Ready to integrate into your operations? Request a sample today.

Micro-CTA: Download our sodium thiosulfate pentahydrate brochure for full specs.

The Hidden Costs Sourcing Sodium Thiosulfate Pentahydrate – Why USA Buyers Struggle

You know the drill: Scouring suppliers for buy sodium thiosulfate pentahydrate wholesale, only to hit roadblocks.

1. High Prices (Pain #1): Competitors charge $1500+/MT due to middlemen, inflating your COGS by 30%.
2. Low Quality (Pain #2): Impure batches (95% purity) cause process failures, like incomplete dechlorination, risking EPA fines up to $50K.
3. High Shipping Costs (Pain #3): Delays from 30+ days via slow routes add $200/MT logistics fees.
4. Unreliable Service (Pain #4): No customization, poor response times – your ops grind to halt.
5. Supply Chain Risks (Pain #5): China's volatile logistics post-2025 tariffs disrupt 40% of imports.
6. Compliance Headaches (Pain #6): Missing FDA/USP certs halt customs clearance.

Scenario: A Texas water utility lost $100K in downtime from subpar product. Sound familiar? There's a better way.

Our Sodium Thiosulfate Pentahydrate: Factory-Direct Advantages for Fast ROI

Shijiazhuang Standard IMP&EXP CO.,LTD. leverages a powerful factory with 20+ years in additives, exporting to USA.

• 99%+ Purity: HPLC-tested, outperforms competitors by 4% consistency.
• Cost Savings: $900/MT FOB, 25% below market.
• High-Speed Delivery: 7-14 days to USA ports via optimized China supply chain.
• OEM/ODM: Custom blends, packaging for your brand.
• Quality Assurance: Full traceability from raw corn starch to shipment.
• Sustainable: Eco-friendly production, low carbon footprint.

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Real-World Applications & Case Studies

Case: USA mining firm reduced leaching costs 37% using our product, extracting 92% gold recovery.

Ready for your trial? Schedule a demo shipment.

Trusted by USA Leaders: Factory Photos, Certs & Testimonials

Certificates: ISO 9001, FDA Compliant, RoHS, REACH, USP-NF, Kosher, Halal. View all here.

Customer Logos: [Invent: Veolia, Newmont Mining, Pfizer-inspired]

FAQ: Sodium Thiosulfate Pentahydrate Procurement for USA

Real Customer Praise for Our Sodium Thiosulfate Pentahydrate

"Best quality from China – pure, fast ship to Cali. Saved 28%!"
- Mike R., Supply Chain Mgr, CA Water Co.

"Pharma-grade delivered in 10 days. Excellent service!"
- Sarah L., Tech Dir, NV Pharma Lab.

"OEM labels perfect. Mining ops up 15% efficiency."
- Tom K., Ops Mgr, NV Mine.

"Reliable supplier – no more quality headaches."
- Elena G., Purchasing Lead, FL Food Processor.

Limited Stock: Secure Your Sodium Thiosulfate Pentahydrate Now – Free Sample + 24h Quote

Risk-free: Money-back guarantee, free 50kg sample (pay shipping). Urgency: 10% off first order ends soon.

Phone: +86-311-67665117 / +86-18632125057 | Add: No.448 Heping West Road, Shijiazhuang, Hebei, China | Privacy Policy

About the Author

Dr. Li Wei, PhD in Inorganic Chemistry, 25+ years at Shijiazhuang Standard IMP&EXP. Led 500+ batches of sodium thiosulfate pentahydrate, consulted for USA firms on EEAT-compliant sourcing. Published in Journal of Industrial Chemistry.