Diphenylphosphine oxide Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 4559-70-0 |
| Product name | Diphenylphosphine oxide |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeMaterial GradeSpecialty 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 Diphenylphosphine oxide
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Diphenylphosphine oxide Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Diphenylphosphine oxide
| Industry | Application | Process |
|---|---|---|
| Organic Synthesis | Phosphine ligand precursor for preparing chiral phosphine ligands (e.g., BINAP derivatives) | Undergoes Ullmann coupling with aryl halides or reacts with Grignard reagents to form tertiary phosphines |
| Flame Retardants | Reactive flame retardant for polymer materials such as polycarbonates and epoxy resins | Copolymerized with bisphenol A or epichlorohydrin during polymerization to incorporate phosphorus and enhance flame retardancy |
| Pharmaceutical Intermediates | Structural building block for synthesizing phosphorus-containing heterocyclic drugs and protein tyrosine phosphatase (PTP1B) inhibitors | Oxidation, cyclization, or condensation with amines to construct phosphonyl heterocyclic frameworks |
| Agrochemicals | Phosphorus-functionalized intermediate for synthesizing organophosphorus insecticides and plant growth regulators | Alkylated with chloroalkanes followed by hydrolysis, or substituted with thiols to generate thiophosphonate active ingredients |
Manufacturing Quality Control of Diphenylphosphine oxide
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID detection | Quantifies main component peak area relative to calibration curve using flame ionization detection. |
| Water Content | Karl Fischer Titration | Measures water via stoichiometric reaction between water, iodine, sulfur dioxide, and base in methanol medium. |
| Acid Value | Acid-Base Titration with NaOH | Determines acidic impurities by titration with standardized sodium hydroxide solution using phenolphthalein indicator. |
| Residue on Ignition | Gravimetric Analysis | Measures non-volatile inorganic residue after high-temperature ashing and weighing. |
| Heavy Metals (as Pb) | ICP-OES | Quantifies total heavy metals by plasma excitation and elemental emission intensity measurement. |
| Chloride Content | Ion Chromatography (IC) | Separates and quantifies chloride ions based on retention time and conductivity detection. |
| Appearance | Visual Inspection | Assesses physical state, color, and clarity against standard reference under controlled lighting. |
| Melting Point | Capillary Melting Point Determination | Measures temperature range at which solid transitions to liquid using calibrated capillary apparatus. |
| Organic Volatile Impurities | Headspace Gas Chromatography (HS-GC) | Detects residual solvents by analyzing vapor phase above sample at equilibrium temperature. |
| Sulfated Ash | Gravimetric Analysis | Determines inorganic sulfate residue after combustion with sulfuric acid treatment and final ash weighing. |
| Specific Optical Rotation | Polarimetry | Measures rotation of plane-polarized light induced by chiral impurities or enantiomeric excess. |
| Loss on Drying | Thermogravimetric Analysis (TGA) | Quantifies volatile loss by mass change upon controlled heating under inert atmosphere. |
Technical Specifications of Diphenylphosphine oxide
| Test Item | Specification |
|---|---|
| Appearance | Colorless solid |
| Purity | >=98.0% (by LC-MS) |
| Melting Point | 75–79°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.1% |
| Identification (NMR) | Conforms to reference spectrum |
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 Diphenylphosphine oxide
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Diphenylphosphine oxide
Packaging of Diphenylphosphine oxide
Industrial Diphenylphosphine oxide 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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