Potassium thiosulfate Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 10294-66-3 |
| Product name | Potassium thiosulfate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty GradeReagent Grade |
| Packaging | 25KG/bag500KG/bag1000KG/bag |
| Sample | Test Samples Available (Click to Request Samples) |
| COA | View COA |
| Price | Get Quote |
| Supply Type | Bulk / Contract manufacturing / OEM |
| Shipping | FCL / LCL available |
| Payment Terms | Support FOB \ CIF \ EXW quotations, and accept Letter of Credit (L/C). |
| Manufacturer | Greenrock Chemical(China Factory) |
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Documents We Provide for Potassium thiosulfate
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Potassium thiosulfate Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Potassium thiosulfate
| Industry | Application | Process |
|---|---|---|
| Photography | Fixing agent component | Used to dissolve unexposed silver halides and stabilize the image during photographic development |
| Pharmaceuticals | Raw material for antidotes | Used in the preparation of cyanide poisoning treatments (typically administered with sodium nitrite) |
| Analytical Chemistry | Titrant | Serves as a standard reducing agent in iodometric titrations to determine the concentration of oxidizing substances |
| Electroplating | Silver plating additive | Acts as a complexing agent in silver plating baths to improve deposit uniformity and brightness |
| Textiles | Dechlorination agent | Removes residual chlorine from bleached fabrics to prevent fiber damage |
| Environmental Engineering | Wastewater treatment agent | Reduces toxic metal ions—such as chromium and mercury—in industrial wastewater to lower their toxicity |
Manufacturing Quality Control of Potassium thiosulfate
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (K2S2O3 content) | Acid-base titration with iodine | Oxidation of thiosulfate by iodine in neutral/weakly acidic medium, followed by back-titration with sodium thiosulfate or direct iodometric titration. |
| pH of aqueous solution | Potentiometric pH measurement | Measurement of hydrogen ion activity using calibrated pH electrode in 1% w/v aqueous solution. |
| Water insoluble matter | Gravimetric analysis | Filtration of aqueous solution through pre-weighed sintered glass crucible, drying and weighing of residue. |
| Chloride (Cl-) | Argentometric titration (Mohr method) | Titration with silver nitrate in neutral medium using potassium chromate indicator; formation of red silver chromate at endpoint. |
| Sulfate (SO4^2-) | Gravimetric analysis with barium chloride | Precipitation of sulfate as barium sulfate after removal of interfering ions, followed by ignition and weighing. |
| Heavy metals (as Pb) | Colorimetric limit test with thioacetamide | Formation of brownish-black metal sulfide complexes in acidic medium, compared visually against lead standard. |
| Iron (Fe) | Atomic absorption spectroscopy (AAS) | Quantification of atomic absorption at 248.3 nm after acid digestion and matrix matching. |
| Arsenic (As) | Gutzeit arsenic test | Reduction of arsenic compounds to arsine gas, which reacts with mercuric bromide paper to form yellow-to-brown stain. |
| Loss on drying | Thermogravimetric analysis (TGA) or oven drying | Weight loss measured after heating at 105 C for 2 hours under controlled humidity conditions. |
| Appearance | Visual inspection | Assessment of physical state, color, and absence of visible foreign particles in solid sample under controlled lighting. |
| Residue on ignition | Gravimetric analysis | Ignition at 600 C to remove organic impurities, followed by weighing of inorganic residue. |
| Potassium (K+) | Flame photometry | Quantification based on intensity of violet emission at 766.5 nm in flame-excited sample solution. |
Technical Specifications of Potassium thiosulfate
| Test Item | Specification |
|---|---|
| Appearance | White crystalline powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.0% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.2% |
| Solubility | Freely soluble in water; insoluble in ethanol |
| Odor | Odorless |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of Potassium thiosulfate
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of Potassium thiosulfate
Industrial Potassium thiosulfate Procurement FAQ
1. How do you ensure product quality consistency?
We rely on a mature China-based manufacturing system and implement strict batch control and quality inspection for every shipment. Our production process complies with ISO 9001 standards, and a COA is provided for each batch to ensure consistent and reliable quality.
2. Do you offer competitive pricing for bulk orders?
Yes, as a China-based manufacturer and bulk supplier, we provide tiered pricing based on order volume. We support FOB and CIF quotations, as well as L/C payment terms for large transactions to meet international trade requirements.
3. Can you support large-volume or long-term supply?
We have stable production capacity and a well-established supply chain, enabling continuous bulk supply. We support ton-level and container-level orders, as well as long-term cooperation projects.
4. What is your typical lead time?
For in-stock products, shipment can be arranged within 1–3 days. For bulk packaging or customized orders, lead time depends on the specific quantity and production schedule.
5. What documents do you provide?
We can provide complete documentation upon request, including COA, SDS, TDS, and other compliance certificates, meeting industrial procurement and export requirements.
6. Can you customize product specifications or packaging?
Yes, we support customization of parameters such as purity, impurities, residual solvents, and heavy metals. We also offer various bulk packaging options, including 25kg bags, drums, and IBC tanks, suitable for industrial applications and transportation.
7. What shipping options do you support?
We support both FCL (Full Container Load) and LCL (Less than Container Load) shipments, and can flexibly arrange logistics solutions based on order size to meet bulk chemical export needs.
8. Do you provide technical or application support?
Yes, we provide basic application guidance and technical support based on industry experience to help customers optimize product usage.
9. How do you handle compliance and export regulations?
We are familiar with international trade and export regulations, ensuring all products comply with relevant requirements. We also provide complete documentation to support smooth customs clearance and global delivery.
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