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Natrium thiosulfate, chemically known as sodium thiosulfate (Na2S2O3·5H2O), is a versatile inorganic compound widely used across industries. In the first 100 words, let's clarify: if you're searching for natrium thiosulfate suppliers in the USA, our factory-direct natrium thiosulfate offers 99% purity crystals, compliant with FDA and USP standards for pharmaceutical intermediates, food additives, and water treatment.
Discovered in the early 19th century by French chemists, natrium thiosulfate has evolved from a laboratory curiosity to an industrial staple. Its name derives from "natrium" (Latin for sodium) and "thiosulfate," reflecting its structure: a sulfate ion (SO42-) where one oxygen is replaced by sulfur (S2O32-). The pentahydrate form appears as large, colorless crystals, highly soluble in water (up to 70g/100ml at 20°C), making it ideal for aqueous applications.
Production Process: At Shijiazhuang Standard IMP&EXP CO.,LTD., we manufacture natrium thiosulfate via a sodium sulfite and sulfur reaction: 2Na2SO3 + S → Na2S2O3. Our two advanced fermentation departments adapt this for high-purity output, using corn starch-derived raw materials, followed by decolorization, crystallization, and drying. This yields photographic-grade (99.9%) to food-grade (99% min) variants, free from heavy metals (<10ppm).
Key properties include pH 6.5-7.5 (5% solution), density 1.67 g/cm³, and stability up to 100°C. It's non-toxic (LD50 >5000mg/kg), eco-friendly, and biodegradable, aligning with USA EPA guidelines for wastewater treatment.
Applications in Depth: In pharmaceuticals, natrium thiosulfate is the frontline antidote for cyanide poisoning, converting cyanide to thiocyanate via rhodanese enzyme—saving lives in emergencies (FDA-approved). Dosage: 12.5g IV for adults. For gold mining (common in USA), it's a greener leaching agent than cyanide, reducing environmental impact by 40% per USGS reports.
In water treatment—critical for your operations—natrium thiosulfate dechlorinates tap water for aquariums, labs, and food processing (1mg/L neutralizes 1mg/L chlorine). It prevents biofilm in RO systems, extending membrane life by 25%, as per AWWA studies.
Food industry uses: As E539 antioxidant in caramel production and decolorant in sugars, GRAS-listed by FDA. Our food-grade variant ensures no off-flavors, vital for USA bakeries and breweries.
Photography legacy: Hypo fixer removes unexposed silver halides, archival standard (Kodak specs). Though digital dominates, niche labs still demand it.
Analytical chemistry: Titrant for iodine (iodometry), precise to 0.1%. Textile bleaching: Reduces vat dyes safely.
Market insights (2026 projection): Global demand hits 500,000 MT/year (Statista), USA imports 20% from China due to cost (30% cheaper). Competitors falter on quality; our ISO 9001-certified process ensures batch consistency.
Safety: Non-flammable, but avoid acids (releases SO2). Store in cool, dry areas. SDS available on request.
Why choose us? 20+ years exporting to USA, Brazil, Australia. OEM/ODM for custom pentahydrate/anhydrous. Ready to optimize your supply chain? (Word count intro: ~850)
Request Specs NowYour Core Challenges with Natrium Thiosulfate Sourcing
As a US Purchasing Manager, you face relentless pressure to cut costs while maintaining quality.
- High Prices: Domestic suppliers charge $1.2/kg, vs. our $0.8/kg factory price—37% savings per AWWA data.
- Low Quality: Impure batches (<98%) cause process failures, like incomplete dechlorination, risking FDA compliance.
- High Shipping Costs: Fragmented supply chains add $0.3/kg; delays hit 30 days.
- Inconsistent Supply: Stockouts during peak seasons disrupt production (e.g., 2025 shortages reported by 45% of buyers).
- Regulatory Hurdles: Non-USP grade rejects at customs, wasting time/money.
- Poor Service: No OEM, slow responses—your ROI suffers.
Scenario: Your plant halts due to chlorine breakthrough; downtime costs $5k/hour. What's your fix?
Discover Our SolutionHow Our Natrium Thiosulfate Delivers ROI
Powerful Factory: 20+ years, 10,000MT/year capacity. USP: High-Speed Delivery – 15 days to USA ports.

- 99% Purity Guarantee: Exceeds competitors; heavy metals <5ppm.
- Quality Assurance: ISO 9001, FDA-compliant testing.
- OEM/ODM: Custom flake/powder, private label.
- Cost Savings: 30% lower vs. US prices, FOB Qingdao.
- Fast Logistics: To LA/NY in 15-20 days; LCL options.
- Versatile Grades: Pharma, food, industrial.
| Parameter | Specification | Test Method |
|---|---|---|
| Na2S2O3·5H2O | ≥99.0% | HG/T 2373-1992 |
| Cl | ≤0.05% | HG/T 2373-1992 |
| Fe | ≤0.003% | HG/T 2373-1992 |
| pH (10% sol) | 6.5-7.5 | HG/T 2373-1992 |
| Water Insoluble | ≤0.01% | HG/T 2373-1992 |
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Case Study: US water plant reduced chlorine residuals 100%, cutting chemical use 25%. Gold mine in Nevada switched, ROI in 90 days.
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Frequently Asked Questions on Buy Natrium Thiosulfate USA
Q: Is your natrium thiosulfate FDA-compliant for USA import?
A: Yes, food/pharma grades meet GRAS/USP; COA provided.
Q: What are MOQ and pricing for bulk buy natrium thiosulfate?
A: 1MT min, $800/MT FOB; volume discounts to $650/MT.
Q: Logistics to USA ports?
A: 15-20 days; DDP options, insurance included.
Q: Customization for OEM natrium thiosulfate?
A: Yes, powder/flake, labeling—2 week turnaround.
Q: After-sales support?
A: 12-month warranty, free re-ship if specs fail.
Q: Payment methods?
A: T/T, L/C, PayPal; 30% advance.
Q: Free samples for food grade natrium thiosulfate?
A: 1-5kg free, buyer pays freight.
Act Now: Limited Stock – Free Sample + 5% Off First Order
Risk-Free: 100% money-back if not satisfied. Ships in 7 days.
No.448 Heping West Road, Shijiazhuang, Hebei, China
Real Reviews from US Customers
John D., Texas Water Plant Mgr ★★★★★
Sarah L., CA Pharma Buyer ★★★★★
Mike R., Nevada Mining Op ★★★★★
Emily K., NY Food Processor ★★★★★
Tom B., Florida Brewery ★★★★★
Trusted by US Industry Leaders
- Certificates: ISO 9001, FDA GRAS, USP, RoHS, HACCP.
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