China Factory Direct
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| CAS number | 4437-20-1 |
| Product name | Difurfuryldisulfide |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeSpecialty Grade |
| Packaging | 25L/drum200L/drum1000L/IBC |
| 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 |
|---|---|---|
| Agriculture | Intermediate for fungicides and insecticides | Used in the synthesis of organosulfur pesticides via nucleophilic substitution reactions with amines or alcohols to prepare active ingredients |
| Chemical | Sulfur source reagent in organic synthesis | Acts as a disulfide bond donor under mild conditions to construct sulfur-containing heterocycles or thioether intermediates |
| Pharmaceuticals | Precursor for disulfide bonds in drug molecules | Introduces or cleaves disulfide bonds during peptide or antibiotic synthesis via oxidation or reduction reactions |
| Test Item | Common Testing Methods | Method Overview |
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| Difurfuryl disulfide content | Gas Chromatography (GC) | Using a gas chromatograph with an FID (flame ionization detector), the difurfuryl disulfide in the sample is separated by a capillary column, and quantification is performed using internal or external standard methods. This method offers high resolution and sensitivity. |
| Purity and impurities | High-Performance Liquid Chromatography (HPLC) | Using a reverse-phase C18 column, methanol-water or acetonitrile-water as the mobile phase, and detection at UV (e.g., 220–280 nm), this method is suitable for the analysis of non-volatile impurities and assessment of the main component's purity. |
| Structure confirmation | Gas Chromatography-Mass Spectrometry (GC-MS) | The sample is separated by gas chromatography and then introduced into the mass spectrometer. The structure of difurfuryl disulfide is identified through characteristic fragment ions and molecular ion peaks, suitable for qualitative analysis and identification of impurity structures. |
| Volatile component analysis | Headspace-Gas Chromatography (HS-GC) | It is suitable for detecting residual solvents or volatile by-products. The sample is placed in a sealed headspace vial and heated to equilibrium, then the gas phase portion is injected for analysis, avoiding matrix interference and improving detection accuracy. |
| Sulfur content determination | Elemental Analysis (CHNS Analysis) | The sulfur content in the sample is determined by high-temperature combustion and detection of the released sulfur. It is used to verify whether the sulfur content in the compound matches the theoretical value, assisting in evaluating product purity and chemical composition. |
| Test Item | Specification |
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| Appearance | Yellow-brown liquid |
| Purity | >=98.0% (GC-MS) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Refractive Index (n20/D) | 1.570–1.585 |
| Relative Density (20°C/25°C) | 1.18–1.22 g/cm³ |
| Odor | Characteristic 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.