China Factory Direct
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| CAS number | 1774-35-2 |
| Product name | 4,4'-Dimethyldiphenylsulfoxide |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial GradeSpecialty GradeIndustrial 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 |
|---|---|---|
| Pharmaceuticals | Used as an organic synthesis intermediate for the production of anti-inflammatory, antimicrobial, or antitumor agents | Participates in oxidation, reduction, or nucleophilic substitution reactions to construct sulfur-containing heterocycles or chiral molecular structures |
| Agrochemicals | Used as an agrochemical intermediate for synthesizing biologically active sulfur-containing compounds | Undergoes functional group transformations—such as sulfoxide introduction or aromatic ring modification—under catalyzed or non-catalyzed conditions |
| Materials Science | Serves as a precursor for liquid crystal materials or functional polymers | Introduces sulfoxide groups via condensation polymerization, coupling, or similar reactions to modulate material polarity or thermal stability |
| Organic Synthesis | Used as a chiral auxiliary or ligand precursor | Leverages its chiral center to induce asymmetric synthesis, or undergoes further functionalization to prepare ligands |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantification using reverse-phase HPLC with UV detection at 254 nm, comparing peak area against a certified reference standard. |
| Water Content | Karl Fischer Titration | Electrochemical titration where iodine reacts stoichiometrically with water in a methanol-based solvent system. |
| Residue on Ignition | Gravimetric Analysis | Sample is ignited at 700-800 C to oxidize organic matter; inorganic residue is weighed after cooling in a desiccator. |
| Heavy Metals | ICP-OES | Multi-element quantification of Pb, Cd, Hg, As, and Cr after acid digestion, based on element-specific atomic emission intensities. |
| Chloride Impurity | Ion Chromatography | Separation and quantification of chloride anions using anion-exchange column and suppressed conductivity detection. |
| Sulfate Impurity | Barium Sulfate Gravimetry | Precipitation of sulfate as BaSO4 in acidic medium, followed by filtration, drying, and weighing. |
| Melting Point | Capillary Melting Point Apparatus | Thermal transition observed visually or via automated optical detection as solid transforms to liquid under controlled heating rate. |
| Appearance | Visual Inspection | Assessment of physical state, color, and clarity against specified standards under controlled lighting and background conditions. |
| Solubility in Water | Qualitative Solubility Test | Dissolution behavior evaluated by adding sample to distilled water at 25 C with agitation and observing homogeneity after 10 min. |
| Related Substances | HPLC-DAD | Separation and identification of impurities using HPLC with diode-array detection, comparing retention times and spectra to reference compounds. |
| Acid Value | Acid-Base Titration | Neutralization of acidic impurities with standardized NaOH solution using phenolphthalein indicator or potentiometric endpoint detection. |
| Loss on Drying | Thermogravimetric Analysis (TGA) | Mass loss measured gravimetrically after drying at 105 C for 2 hours under ambient atmosphere. |
| Test Item | Specification |
|---|---|
| Appearance | Yellow solid |
| Purity | >=98.0% (GC-MS) |
| Water Content (KF) | <=0.5% |
| Melting Point | 124-128°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Identification (NMR) | Consistent with structure |
| Odor | Characteristic odor |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
| Pictograms | ![]() |
| Signal Word | Warning |
| Safety Data Sheet | |
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.