Sodium selenite pentahydrate Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 26970-82-1 |
| Product name | Sodium selenite pentahydrate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial GradeSpecialty GradeElectronic 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 selenite pentahydrate
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Sodium selenite pentahydrate Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Sodium selenite pentahydrate
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Raw material for synthesizing selenoamino acids | Chemical synthesis |
| Agriculture | Trace element additive for selenium supplementation | Mixing into feed or fertilizer formulations |
| Glass manufacturing | Color and optical property modifier for glass | Addition during glass melting |
| Ceramics | Colorant in ceramic glazes | Glaze formulation followed by firing |
| Electronics | Dopant in semiconductor material production | Physical vapor deposition (PVD) or chemical vapor deposition (CVD) |
| Analytical chemistry | Analytical reagent for specific chemical reactions | Preparation of standard solutions or reaction systems |
Manufacturing Quality Control of Sodium selenite pentahydrate
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Na2SeO3) | Acid-Base Titration with Iodometric Back-Titration | Selenite is oxidized by iodine in acidic medium; unreacted iodine is titrated with sodium thiosulfate to determine selenite content. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Sample is digested and analyzed for heavy metal ions by measuring absorption of characteristic atomic spectral lines. |
| Arsenic | Silver Diethyldithiocarbamate (SDDC) Spectrophotometry | Arsenic is reduced to arsine gas, which reacts with SDDC to form a red-colored complex measured at 510 nm. |
| Iron | UV-Vis Spectrophotometry (1,10-Phenanthroline method) | Fe2+ forms an orange-red complex with 1,10-phenanthroline; absorbance is measured at 510 nm. |
| Chloride | Potentiometric Titration with Silver Nitrate | Chloride ions react with AgNO3 to form AgCl precipitate; endpoint detected by silver ion-selective electrode. |
| Sulfate | Gravimetric Analysis | Sulfate is precipitated as BaSO4 under controlled conditions and quantified by weight after drying. |
| Water Content (Loss on Drying) | Thermogravimetric Analysis (TGA) or Oven Drying at 105 C | Mass loss upon heating at specified temperature reflects total volatile content, primarily hydrated water. |
| pH of Aqueous Solution | pH Meter Measurement | A 1% w/v aqueous solution is prepared and pH measured using calibrated glass electrode. |
| Insoluble Matter | Gravimetric Filtration | Sample is dissolved, filtered through pre-weighed sintered glass crucible, dried and weighed. |
| Selenium Content | Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) | Sample is acid-digested and nebulized into plasma; Se emission intensity at 196.090 nm is quantified against calibration curve. |
| Sodium Content | Flame Photometry | Atomized sample introduced into flame; sodium emission at 589 nm is measured and compared to standards. |
| Appearance | Visual Inspection | Homogeneous white to off-white crystalline powder assessed under controlled lighting against standard reference. |
Technical Specifications of Sodium selenite pentahydrate
| Test Item | Specification |
|---|---|
| Appearance | White crystalline powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Residue on Ignition | <=0.2% |
| Heavy Metals | <=20 ppm |
| Total Impurities | <=1.5% |
| Solubility | Freely soluble in water; 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 selenite pentahydrate
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of Sodium selenite pentahydrate
Industrial Sodium selenite pentahydrate 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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