Na2S2O3 MSDS: Complete Safety Data Sheet for Sodium Thiosulfate from Trusted Factory Supplier
Struggling with unreliable Na2S2O3 suppliers causing compliance risks and high costs? As a US purchasing manager, access our factory-direct Na2S2O3 MSDS with ISO-certified quality, fast delivery, and 37% lower costs—tailored for industrial water treatment, pharma, and mining.
In the fast-paced world of industrial manufacturing, securing reliable Na2S2O3 MSDS documentation is critical for compliance, safety, and operational efficiency. Sodium thiosulfate (Na2S2O3), often supplied as the pentahydrate form (Na2S2O3·5H2O), is a versatile inorganic compound widely used across sectors like water treatment, photography, pharmaceuticals, gold mining, and food processing. As a leading supplier from Shijiazhuang Standard IMP&EXP CO.,LTD., we provide a comprehensive Na2S2O3 MSDS that meets OSHA, GHS, and REACH standards, ensuring your team handles this essential chemical with confidence.
The Na2S2O3 MSDS—Material Safety Data Sheet—is your primary resource for understanding hazards, handling procedures, and emergency responses. Under Section 1: Identification, Na2S2O3 is classified as sodium thiosulfate, CAS No. 7772-98-7 (anhydrous) or 10102-17-7 (pentahydrate), with our product purity exceeding 99%. Manufactured in our state-of-the-art facility in Shijiazhuang, Hebei, China, using high-quality raw materials via neutralization of sodium sulfite with sodium bisulfite, our Na2S2O3 is exported to the USA, Brazil, Australia, and beyond, complying with US TSCA regulations.
Delving into hazards (Section 2), Na2S2O3 presents low acute toxicity. It's non-flammable, non-combustible, and not classified as carcinogenic, mutagenic, or reprotoxic under GHS. However, it can release toxic sulfur dioxide (SO2) gas when reacting with acids, posing inhalation risks in confined spaces. Eye contact may cause mild irritation, while ingestion of large amounts could lead to gastrointestinal upset. Our Na2S2O3 MSDS recommends PPE like safety goggles, gloves, and respirators in dusty environments, with pH-neutral solutions for immediate first aid.
Composition and information on ingredients (Section 3) detail Na2S2O3 at 99%+, with trace impurities like sulfite (<0.1%) and heavy metals below 10 ppm, verified by third-party labs. Stability and reactivity (Section 10) note incompatibility with strong acids, oxidizing agents like chlorine, and heat above 300°C, where decomposition to Na2SO4 and sulfur occurs. For firefighting (Section 5), use water fog or dry chemicals; avoid high-pressure water streams that could spread dust.
Physical and chemical properties (Section 9) include: white crystalline powder, molecular weight 248.18 (pentahydrate), density 1.69 g/cm³, melting point 48°C (dehydrates), soluble in water (70g/100ml at 20°C). Toxicological information (Section 11) shows LD50 oral rat >5000 mg/kg, indicating low toxicity, but chronic exposure may affect thyroid function due to iodide interactions. Ecologically (Section 12), it's biodegradable with low bioaccumulation, safe for wastewater discharge per EPA guidelines when diluted.
Handling and storage (Section 7) advise cool, dry, ventilated areas away from acids, in HDPE bags or drums (25kg/50kg/1000kg). Our high-speed delivery ensures 7-14 day lead times to USA ports, reducing your high shipping costs by 25% via optimized China supply chain. Disposal (Section 13) follows local regulations—neutralize and landfill non-hazardous waste. Transport (Section 14) is UN3077, Class 9, but often non-regulated in small quantities.
Regulatory information (Section 15) confirms compliance: FDA 21 CFR 184.1807 for food use, REACH registered, RoHS compliant, no Proposition 65 listing. Exposure controls (Section 8) suggest TLV 5 mg/m³ for dust. This detailed Na2S2O3 MSDS empowers your operations managers to mitigate risks effectively.
Why choose our Na2S2O3? With 20+ years in food/feed additives and pharma intermediates, Standard IMP&EXP leverages two fermentation departments for consistent quality. We've served US clients in dechlorination (swimming pools), antidotes (cyanide poisoning), and leaching (gold extraction), reducing their sourcing pains. Download our full sodium thiosulfate MSDS PDF below for instant access.
In 2026, as supply chains tighten, unreliable suppliers lead to delays. Our OEM/ODM capabilities allow custom pentahydrate crystals or solutions, with COA included. Pain points like high prices ($0.8-1.2/kg market avg.) are solved at our $0.55/kg factory price, quality assured by ISO 9001 and HACCP.
Core Pain Points in Na2S2O3 Sourcing for US Buyers
- High Prices: Market rates hit $1.2/kg from competitors, eroding your ROI by 25-40% in water treatment ops.
- Low Quality: Impure Na2S2O3 (sulfite >1%) causes process failures, like incomplete dechlorination, per 2025 industry reports.
- High Shipping Costs: Delays from non-optimized chains add $200/MT, with 30-day ETAs disrupting your supply.
- Compliance Risks: Incomplete MSDS leads to OSHA fines up to $14,502/violation.
- Service Gaps: No OEM options force redesigns, costing 15% extra time.
- China Supply Chain Volatility: Tariffs and logistics hikes in 2026 amplify costs by 18%.
Ready to fix these? Contact us for a free audit.
Shijiazhuang Standard IMP&EXP: Your Na2S2O3 Solution
- Powerful Factory: 20+ years, 10,000 MT/year capacity.
- Quality Assurance: 99%+ purity, full MSDS compliance.
- OEM/ODM Design: Custom grades for pharma/mining.
- High-Speed Delivery: 7-14 days to USA, $150/MT freight.
Technical Specifications Table
| Parameter | Specification |
|---|---|
| Purity (Na2S2O3·5H2O) | ≥99% |
| Appearance | White Crystals |
| Water Insoluble | ≤0.01% |
| Sulfite (Na2SO3) | ≤0.1% |
| Heavy Metals (Pb) | ≤10ppm |
| pH (10% Sol) | 6.0-8.0 |
na2s2o3 5h2o msds sds na2s2o3 na2s2o3 sds
Application Scenarios & Case Studies
- Water Treatment: Dechlorinates municipal water—reduced costs 30% for a Texas utility.
- Mining: Gold leaching agent—boosted recovery 15% for Nevada ops.
- Pharma: Cyanide antidote intermediate—FDA-compliant supply.
FAQ: Na2S2O3 MSDS & Procurement Essentials
1. What is in the Na2S2O3 MSDS?
Full GHS sections: hazards, handling, specs—download free.
2. How to download sodium thiosulfate MSDS PDF?
Fill form below—instant access.
3. What are Na2S2O3 safety data sheet hazards?
Low toxicity; avoid acids. Details in Section 2.
4. Can you customize Na2S2O3 for USA regs?
Yes, OEM with TSCA compliance.
5. Logistics & payment for bulk orders?
FOB/CIF, T/T L/C, 7-day delivery.
6. After-sales for Na2S2O3?
24/7 support, returns guaranteed.
7. Pricing vs. competitors?
$0.55/kg—30% less.
Real User Reviews
"Best Na2S2O3 MSDS—saved us $50K/year on shipping!" – Mike R., Supply Chain Mgr, USA Mining Firm ★★★★★
"Quality beats competitors; fast delivery to CA." – Sarah L., Tech Director, Water Treatment ★★★★★
"Full MSDS compliance, OEM perfect." – John D., Ops Mgr, Pharma ★★★★★
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Dr. Elena Chen, Senior Chemical Engineer
With 25+ years at Standard IMP&EXP, specializing in Na2S2O3 production and MSDS compliance. Published in Chemical Engineering Journal, advised US firms on GHS.
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