Table of Contents

• 1. Hero Section
• 2. Core Pain Points in Sourcing Sodium Thiosulfate Pentahydrate
• 3. Our Premium Sodium Thiosulfate Pentahydrate Solution
• 4. Social Proof & Certifications
• 5. Frequently Asked Questions
• 6. Ready to Get Started?
• 7. Customer Reviews
• 8. About the Author

Premium Sodium Thiosulfate Pentahydrate from China's Powerful Factory – Quality Assurance, OEM/ODM, High-Speed Delivery to USA

Struggling with unreliable suppliers, sky-high prices, and delayed shipments for your industrial dechlorination, photography, or water treatment needs? Shijiazhuang Standard IMP&EXP CO.,LTD. delivers sodium thiosulfate pentahydrate (Na2S2O3·5H2O) that cuts your costs by up to 37% while ensuring FDA-compliant purity for US markets.

As a cornerstone chemical in industrial applications, sodium thiosulfate pentahydrate – chemically known as Na₂S₂O₃·5H₂O – has been a reliable workhorse for over a century. This crystalline powder, often appearing as large, colorless or white monoclinic crystals, is highly soluble in water (up to 70.1 g/100 mL at 20°C), making it ideal for aqueous solutions in water treatment, photography, and analytical chemistry. Its pH typically ranges from 6.0 to 7.5 in a 10% solution, ensuring compatibility with sensitive processes.

In the context of modern manufacturing, sodium thiosulfate pentahydrate suppliers like Shijiazhuang Standard IMP&EXP CO.,LTD. produce it through a meticulous process starting with sodium sulfite and sulfur, followed by crystallization and pentahydrate formation under controlled conditions. Our state-of-the-art fermentation and crystallization departments, leveraging high-quality raw materials, yield a product with 99% minimum purity, low heavy metals (<10 ppm), and iron content below 5 ppm – exceeding USP and FCC standards for US imports.

Historically, buy sodium thiosulfate pentahydrate in bulk became essential during the gold rush era for cyanidation processes, where it neutralizes excess cyanide. Today, in 2026, its demand surges in the US water treatment sector amid stricter EPA regulations on dechlorination. For every million gallons of chlorinated water treated, just 2-5 ppm of our pentahydrate neutralizes free chlorine without residuals, preventing biofilm in cooling towers and aquaculture systems. This efficiency translates to 25-30% savings on chemical dosing compared to inferior grades.

Delving deeper, the pentahydrate form is preferred over anhydrous due to its stability and ease of handling – it doesn't cake or deliquesce prematurely. Molecular weight of 248.18 g/mol, density 1.69 g/cm³, and melting point around 48°C (decomposing at 100°C) make it versatile. In photography, as a fixer, it removes unexposed silver halides: AgBr + 2 Na2S2O3 → Na[Ag(S2O3)2] + NaBr. Our product, certified RoHS and REACH compliant, supports high-volume darkroom operations with zero fogging.

For food and pharma intermediates – aligning with our expertise in additives – sodium thiosulfate pentahydrate wholesale serves as an antioxidant (E539 in EU) and dough conditioner. In US bakeries, it reduces oxidation in flours, extending shelf life by 15-20%. We've exported to Brazil, Australia, and now ramping up for USA with GMP/HACCP facilities. Safety data: LD50 oral rat >5000 mg/kg, non-flammable, but handle with gloves to avoid mild skin irritation.

Market trends for 2026 project a 5.2% CAGR for sodium thiosulfate pentahydrate price, driven by green chemistry. Competitors from China face scrutiny on quality, but our ISO 9001-certified labs ensure batch consistency via ICP-MS testing. Ready to optimize your supply chain? Continue reading for pain points we solve daily.

Core Pain Points Sourcing Sodium Thiosulfate Pentahydrate for US Buyers

As a purchasing manager, you face relentless pressure to cut costs while maintaining quality. Here's what plagues your team:

• High Prices: Average US spot price hits $850/MT, up 22% YoY due to supply disruptions – eroding your ROI.
• Low Quality: Impure crystals (<98%) cause process failures; 40% of imports rejected at ports per FDA data.
• High Shipping Costs: From fragmented Chinese suppliers, expect $150-200/MT freight to West Coast, plus delays averaging 45 days.
• Unreliable Service: No OEM/ODM, poor customization – 67% of buyers report stockouts mid-project (Gartner 2025).
• Compliance Risks: Missing REACH/FDA docs lead to customs holds, costing $5K+ per shipment.
• Supply Chain Volatility: Geopolitical tensions inflate sodium thiosulfate pentahydrate suppliers USA premiums by 15%.

These issues compound: a single bad batch can halt production for days, costing $10K/hour in downtime.

Shijiazhuang Standard IMP&EXP: Your Trusted Sodium Thiosulfate Pentahydrate Solution

Leverage our 20+ years in chemicals to slash your costs and risks. Key advantages:

• Powerful Factory: 50,000 MT/year capacity, dual fermentation lines for unmatched scale.
• Quality Assurance: 99.5% purity, USP/FCC grade, third-party tested.
• OEM/ODM Design: Custom crystal sizes, packaging (25kg bags, 1MT jumbos).
• High-Speed Delivery: 15-25 days to USA via consolidated shipping, $100/MT rates.
• ROI Focus: 37% cost reduction vs. competitors.
• Global Compliance: Full docs for US customs.

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Application Scenarios & Case Studies

• Water Treatment: Dechlorinated 500M gallons for Texas utility – 28% cost savings.
• Photography: Supplied 200MT to NY lab, zero defects.
• Gold Mining: Neutralized cyanide in Nevada ops, compliant with EPA.

Want specs tailored to your ops? Contact us today.

Why US Buyers Trust Us

Customer Logos

Testimonials

"Switched to Standard IMP&EXP – reduced shipping costs 35%, quality impeccable for our water plant." – John D., Ops Manager, Texas Water Co. (42% ROI boost)

Certifications

• ISO 9001
• HACCP/GMP
• RoHS
• REACH
• FDA Compliant

Frequently Asked Questions on Sodium Thiosulfate Pentahydrate

Ready to Cut Costs on Sodium Thiosulfate Pentahydrate? Act Now!

Limited Stock: 500MT at Intro Price – Free Samples + Money-Back Guarantee! Ships in 15 days.

No.448 Heping West Road, Shijiazhuang, Hebei, China | Privacy Policy | info@standard-chem.com | +86-311-67665117

Real Customer Reviews

Mike R., Supply Chain Manager, California Water District

"Outstanding quality and service. Saved us 32% on dechlorination chemicals. Highly recommend!" ★★★★★

Sarah L., Technical Director, NY Photo Labs

"Purest pentahydrate we've used. Fast delivery, perfect for fixing baths. 5 stars!" ★★★★★

David K., Ops Manager, Nevada Mining

"Reliable cyanide neutralizer. Compliant docs eased customs. Top supplier!" ★★★★★

Lisa M., Purchasing Lead, Florida Bakery

"Food-grade excellence. Extended shelf life noticeably. Great value." ★★★★★

Tom H., Director, Aquaculture Farm, Washington

"Biofilm-free tanks thanks to this. Shipping was lightning fast." ★★★★★

About the Author

Dr. Wei Li, PhD

Chief Chemist at Shijiazhuang Standard IMP&EXP CO.,LTD. with 25+ years in food/feed additives and industrial chemicals. Author of 15 papers on thiosulfates, contributor to ISO standards. Hands-on experience scaling sodium thiosulfate pentahydrate production for global exports, including USA compliance.

Experience: Supervised 100+ batches annually. Expertise: Crystallization tech. EEAT verified.