China Factory Direct
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| CAS number | 517-21-5 |
| Product name | GLYOXAL SODIUM BISULFITE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeMaterial 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) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
|---|---|---|
| Chemical Synthesis | Organic synthesis intermediate | Used as an addition reagent in sulfidation reactions to construct sulfur-containing organic compounds |
| Rubber Industry | Vulcanization accelerator | Applied as a co-accelerator in rubber vulcanization to improve crosslinking efficiency |
| Pharmaceutical Industry | Raw material for drug synthesis | Employed as a precursor in synthesizing sulfur-containing heterocyclic drugs, enabling introduction of specific functional groups |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (C2H5ONaS2 content) | Acid-base titration with standardized HCl | Quantifies active ingredient by neutralizing sodium alkoxide group with strong acid using phenolphthalein or potentiometric endpoint detection. |
| Water content | Karl Fischer titration | Measures total water via iodine-sulfur dioxide redox reaction in methanol-based reagent; specific for water. |
| Sodium content | Flame photometry | Determines Na+ concentration based on intensity of characteristic yellow emission at 589 nm upon atomization in flame. |
| Sulfur content | Combustion IC (Ion Chromatography) | Oxidizes sample to sulfate, then quantifies SO4(2-) by conductivity detection after ion separation. |
| Heavy metals (Pb, Cd, Hg, As) | ICP-OES | Simultaneously detects trace metal impurities after acid digestion by measuring element-specific atomic emission intensities. |
| Chloride impurity | Potentiometric titration with AgNO3 | Quantifies Cl- by precipitation titration using silver nitrate and silver indicator electrode. |
| Residue on ignition | Gravimetric analysis | Measures non-volatile inorganic residue after high-temperature ashing at 700-800 C. |
| pH of aqueous solution | pH meter measurement | Determines hydrogen ion activity in a defined aqueous suspension using calibrated glass electrode. |
| Organic impurities | HPLC-UV | Separates and quantifies related organic compounds using reversed-phase column and UV detection at 210-254 nm. |
| Appearance | Visual inspection | Assesses physical state, color, and presence of foreign particles against standard reference under controlled lighting. |
| Bulk density | Graduated cylinder method | Measures mass per unit volume of freely settled powder in standardized cylinder without tapping. |
| Particle size distribution | Laser diffraction | Determines size distribution by analyzing angular dependence of scattered laser light from dispersed sample. |
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.0% |
| Single Impurity | <=0.3% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.1% |
| Odor | Characteristic mild sulfurous odor |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
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.