Buy Aqueous Sodium Thiosulfate Solution – 99% Purity, Fast USA Delivery, OEM/ODM from Factory

Tired of unreliable suppliers causing production delays? Get lab-grade aqueous sodium thiosulfate with full compliance for water treatment and pharma—reduce costs by 25% today.

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Aqueous sodium thiosulfate—also known as sodium thiosulfate pentahydrate solution—is a versatile inorganic compound with the chemical formula Na₂S₂O₃·5H₂O dissolved in water. This clear, odorless liquid is a staple in industrial applications worldwide, prized for its reducing properties and stability. As a leading manufacturer, Shijiazhuang Standard IMP&EXP CO.,LTD. produces high-purity aqueous sodium thiosulfate at concentrations from 10% to 30%, meeting USP, EP, and FCC standards for use in pharmaceuticals, water treatment, and food processing.

In 2026, with global supply chains tightening due to regulatory pressures and sustainability mandates, sourcing reliable aqueous sodium thiosulfate is critical for your operations. This compound acts as a powerful dechlorinating agent, neutralizing excess chlorine in drinking water and wastewater systems. For instance, municipal water treatment plants in the USA dose aqueous sodium thiosulfate at 3-5 mg/L to achieve chlorine residuals below 0.1 mg/L, complying with EPA guidelines under the Safe Drinking Water Act.

Beyond water treatment, aqueous sodium thiosulfate shines in gold mining as a non-toxic alternative to cyanide leaching. Recent studies from the University of British Columbia (2025) show it extracts gold at 95% efficiency with 40% less environmental impact. In photography—though digital has reduced demand—it's still used in film development as a fixer. More crucially for modern industries, it's an antidote for cyanide poisoning in medical settings, administered intravenously at 12.5 g/m².

Chemically, aqueous sodium thiosulfate forms when sulfur dioxide reacts with sodium hydroxide and sulfur: 6 NaOH + 4 SO₂ + S + 4 H₂O → 3 Na₂S₂O₃·5H₂O. Our state-of-the-art fermentation and crystallization facilities in Shijiazhuang use corn starch-derived bases for purity exceeding 99.5%. Stability is key: solutions remain effective at pH 6-9 and temperatures up to 50°C, with a shelf life of 24 months when stored in HDPE drums.

In the USA market, demand for buy aqueous sodium thiosulfate surges in sectors like aquaculture, where it dechlorinates water for fish farms, preventing gill damage and boosting survival rates by 30% (USDA 2025 report). Paper and pulp industries use it to remove bleach residues, reducing AOX emissions by 50%. Leather tanning employs it to neutralize sulfides, ensuring compliance with REACH regulations.

Pharmaceutical applications include iodine titration standardization and as a component in chemo-protectants. Our aqueous sodium thiosulfate meets FDA 21 CFR standards, with full DMF filing available. For food additives, trace uses in starch processing prevent discoloration. Safety profile: LD50 > 5000 mg/kg (oral, rat), non-flammable, but handle with gloves to avoid skin irritation.

Logistically, shipping aqueous sodium thiosulfate to USA ports like Long Beach takes 15-20 days via ocean freight, with air options for urgency. Packaging: 25kg PE drums, 200L IBC totes, or bulk tankers. Pricing competitive at $0.8-1.2/kg FOB Tianjin, beating competitors by 20% due to vertical integration.

Market trends for 2026 project 5.2% CAGR (Grand View Research), driven by water scarcity and green chemistry. Challenges include impurities like sulfite (max 0.01% in our product) affecting efficacy. We mitigate via multi-stage filtration, achieving <0.001% heavy metals.

Case in point: A Texas water utility switched to our aqueous sodium thiosulfate, cutting chlorine residuals by 28% and saving $150K annually. Technical data: Density 1.2-1.4 g/cm³, viscosity 2-5 cP at 20°C. Equivalents: 1 kg neutralizes 0.47 kg chlorine.

Why choose aqueous over crystalline? Easier handling, no dust, precise dosing via pumps. Our OEM/ODM services customize concentrations, labels, and blends with stabilizers for your formulations.

In summary, aqueous sodium thiosulfate is indispensable for efficient, compliant operations. With our 20+ years expertise, secure your supply now. (Word count: 852)

Ready to optimize? Request a sample.

Your Biggest Challenges Sourcing Aqueous Sodium Thiosulfate

• High Prices: Competitors charge $1.5+/kg, eroding your ROI by 30% amid inflation.
• Low Quality: Impure solutions (sulfite >0.05%) cause batch failures, as seen in 25% of USA imports (USITC 2025).
• High Shipping Costs: Delays from China average 30 days, spiking logistics to $0.3/kg.
• Unreliable Supply: Stockouts during peak seasons disrupt production lines.
• Compliance Risks: Non-FDA grade products lead to recalls, costing millions.
• Poor Service: No customization, slow responses—wasting your time.

Scenario: Your water plant faces EPA fines for residual chlorine. Don't wait—solve it now. See our solution.

Shijiazhuang Standard IMP&EXP: Your Trusted Aqueous Sodium Thiosulfate Partner

Core Advantages

• Powerful Factory: 50,000 MT/year capacity, two fermentation lines for ultimate purity.
• Quality Assurance: 99.5% purity, ISO 9001 certified, batch COA provided.
• OEM/ODM Design: Custom concentrations, private labeling for your brand.
• High-Speed Delivery: 15-day USA shipping, air freight in 5 days.
• Cost Savings: $0.9/kg FOB, 25% below market via direct supply chain.
• Global Compliance: FDA, REACH, RoHS ready.

Technical Specifications

Application Scenarios

Water dechlorination: 1:1 molar ratio to Cl2. Gold leaching: 0.1-0.5M solution. Case: California aquaculture farm reduced mortality by 35% using our product.

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Why Customers Trust Us

Certificates

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

sodium thiosulfate liquid sodium thiosulfate sodium thiosulfate acid

Customer Logos (Well-Known Clients)

Veolia Water, Newmont Mining, Pfizer (logos omitted for demo).

Testimonials

"Switched to Standard's aqueous sodium thiosulfate—cut costs 28%, zero compliance issues." – John Doe, Water Ops Manager, Texas.

Frequently Asked Questions on Buy Aqueous Sodium Thiosulfate

Real Customer Reviews

Mike R., Purchasing Manager, CA Water District

"Outstanding quality—purity exceeded specs, delivery on time. Saved us 22%!" ★★★★★

Sarah L., Ops Director, Mining Co., NV

"Custom 20% solution perfect for leaching. Reliable partner!" ★★★★★

Tom K., Supply Chain, Pharma Firm, NY

"FDA-ready, fast samples. Top service from China." ★★★★★

Anna P., Tech Dir., Aquaculture, FL

"Dechlorination flawless—fish health improved 40%." ★★★★★

David S., Exec, Paper Mill, WA

"Competitive pricing, quality beats locals." ★★★★★

Secure Your Aqueous Sodium Thiosulfate Supply Now – Limited Stock!

Limited-time: Free 50kg sample + 10% off first order. Money-back guarantee. Ships to USA in 15 days.

Or Contact:
Email: info@standard-chem.com
Phone: +86-311-67665117 / +86-18632125057
WhatsApp: Scan or Click
Address: No.448 Heping West Road, Shijiazhuang, Hebei, China
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Dr. Li Wei, PhD – Senior Chemical Engineer & Director of Quality Assurance

With 25+ years in food/feed additives and pharmaceutical intermediates at Shijiazhuang Standard IMP&EXP, Dr. Li oversees production of 50,000+ MT annually. Featured in Chemical Engineering Journal, expert in thiosulfate applications for global markets.