SODIUM TETRATHIONATE DIHYDRATE Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 13721-29-4 |
| Product name | SODIUM TETRATHIONATE DIHYDRATE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial 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 SODIUM TETRATHIONATE DIHYDRATE
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk SODIUM TETRATHIONATE DIHYDRATE Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of SODIUM TETRATHIONATE DIHYDRATE
| Industry | Application | Process |
|---|---|---|
| Electroplating Industry | Used as a complexing agent and stabilizer in copper plating baths to improve deposit uniformity and brightness | Forms stable complexes with copper ions in alkaline cyanide or cyanide-free copper plating systems, controlling the release rate of copper ions |
| Analytical Chemistry | Used as a standard reagent in redox titrations for the determination of reducing substances such as sulfites and thiosulfates | Reacts with potassium iodide in acidic medium to liberate iodine, enabling indirect quantification of analytes via iodometric titration |
| Textile Dyeing and Printing | Applied as a reducing agent in post-dyeing detergent washing to prevent dye migration and remove unfixed dye | Undergoes redox reactions with unfixed dyes during soap-washing after dyeing, increasing their water solubility for effective removal |
| Pharmaceutical Intermediate Synthesis | Involved in the construction of sulfur-containing heterocyclic compounds (e.g., thiazoles), serving as a sulfur source or oxidant | Condenses with α-halo carbonyl compounds in organic solvents, followed by cyclization to form the target heterocyclic structure |
Manufacturing Quality Control of SODIUM TETRATHIONATE DIHYDRATE
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Na2S4O6) | Acid-base titration with iodine | Oxidation of iodide to iodine by连四硫酸钠 in acidic medium, followed by titration with standardized sodium thiosulfate solution |
| Chloride (Cl-) | Potentiometric titration with silver nitrate | Precipitation of chloride as AgCl using standard AgNO3 solution, detected by silver ion-selective electrode |
| Sulfate (SO4^2-) | Gravimetric analysis | Precipitation as BaSO4 under controlled conditions, followed by drying and weighing of the precipitate |
| Heavy metals (as Pb) | Atomic absorption spectroscopy (AAS) | Quantification of total heavy metals by atomization and measurement of absorbance at characteristic wavelengths |
| Iron (Fe) | UV-Vis spectrophotometry (1,10-phenanthroline method) | Formation of orange-red Fe(II)-phenanthroline complex; absorbance measured at ~510 nm |
| pH of aqueous solution | Potentiometric pH measurement | Determination of hydrogen ion activity using calibrated glass electrode and reference electrode |
| Loss on drying | Gravimetric (thermogravimetry) | Mass loss measured after heating sample at 105 C for 2 hours under controlled atmosphere |
| Water insoluble matter | Filtration and gravimetry | Insoluble residue collected on pre-weighed filter paper, dried and weighed |
| Sodium (Na+) | Inductively coupled plasma optical emission spectrometry (ICP-OES) | Atomization and excitation in argon plasma; Na emission intensity at 589 nm quantified against standards |
| Residual solvents | Gas chromatography (GC-FID) | Separation and detection of volatile organic impurities using flame ionization detector |
| Particle size distribution | Laser diffraction | Analysis of light scattering pattern from dispersed particles to calculate size distribution |
| Microbial contamination | Membrane filtration and colony counting | Filtration of sample solution, incubation on appropriate agar media, and enumeration of viable colonies |
Technical Specifications of SODIUM TETRATHIONATE DIHYDRATE
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=10 ppm |
| Solubility | Freely soluble in water; practically insoluble in ethanol |
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 SODIUM TETRATHIONATE DIHYDRATE
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Safety Information of SODIUM TETRATHIONATE DIHYDRATE
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of SODIUM TETRATHIONATE DIHYDRATE
Industrial SODIUM TETRATHIONATE DIHYDRATE 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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