Diphenyl phosphate Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 838-85-7 |
| Product name | Diphenyl phosphate |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial GradeSpecialty GradeMaterial GradeElectronic 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 Diphenyl phosphate
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Diphenyl phosphate Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Diphenyl phosphate
| Industry | Application | Process |
|---|---|---|
| Plastics Industry | Flame retardant and reactive flame retardant additive in polycarbonate production | Participates in interfacial or melt polycondensation with bisphenol A and phosgene (or diphenyl carbonate) during melt compounding or polymerization; diphenyl phosphate serves as a chain terminator or comonomer to incorporate phosphate structures and impart flame retardancy |
| Electrical & Electronics | Flame retardant modifier for engineering plastics such as PC/ABS | Melt-compounded with resin matrices (e.g., polycarbonate, acrylonitrile-butadiene-styrene copolymer) using a twin-screw extruder to achieve uniform dispersion and meet UL94 V-0 flame retardancy requirements |
| Coatings Industry | Phosphorus-containing flame retardant additive and char-forming promoter in coatings | Used synergistically with other flame retardants (e.g., melamine derivatives) in acrylic or epoxy resin coating systems to catalyze dehydration and char formation at elevated temperatures, yielding a dense, protective char layer |
| Textile Printing & Dyeing | Post-treatment flame retardant for synthetic fibers such as polyester and nylon | Applied via padding-drying-curing process; diphenyl phosphate is formulated with nitrogen-containing synergists (e.g., urea, melamine) and thermally cured at 150–180 °C to impart flame retardancy to fiber surfaces |
| Lubricating Oil Additives | Anti-wear and antioxidant additive component | Formulated with other phosphorus- or sulfur-containing additives (e.g., ZDDP) and incorporated into mineral or synthetic hydrocarbon base oils to form a protective phosphate film on metal surfaces, reducing friction and wear |
Manufacturing Quality Control of Diphenyl phosphate
| Detection Item | Common Testing Methods | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Place the sample in a transparent container and observe its color, physical state, and clarity under natural light or standard illumination. Used to assess the presence of impurities or discoloration. |
| Content/Purity | Gas Chromatography (GC) | Utilize gas chromatography with an appropriate capillary column and flame ionization detector (FID) for separation and detection. Quantification is performed using external or internal standard methods. Suitable for high-purity sample analysis. |
| High-Performance Liquid Chromatography (HPLC) | Use a reversed-phase C18 column with UV detection (approximately 210–254 nm), employing methanol-water or acetonitrile-water mobile phase systems for separation and quantification. Suitable for thermally unstable or non-volatile samples. | |
| Moisture Content | Karl Fischer Titration | Measures water content via electrochemical reaction, available in volumetric and coulometric forms. Ideal for trace moisture analysis with high accuracy. |
| Acid Value / Free Acid | Acid-Base Titration | Dissolve the sample in neutral ethanol or isopropanol, then titrate with standardized sodium hydroxide solution using phenolphthalein as indicator. Calculate acid value (mg KOH/g). Used to assess hydrolysis extent or residual acid levels. |
| Colorimetry | Platinum-Cobalt Colorimetric Method (Pt-Co Scale) | Compare the sample’s color with standard platinum-cobalt solutions to determine color intensity (unit: Hazen or APHA). Used for controlling product visual quality. |
| Residual Solvents | Gas Chromatography (GC) | Use headspace or solution injection with capillary columns and FID detection to identify organic solvents potentially left over from production (e.g., benzene, toluene, ethanol). Complies with pharmacopeial or environmental regulations. |
| Thermal Stability | Thermogravimetric Analysis (TGA) | Measure mass changes under programmed temperature conditions to evaluate decomposition temperature and thermal degradation behavior. Used to assess storage and processing stability. |
| Infrared Spectroscopy Identification | Fourier Transform Infrared Spectroscopy (FTIR) | Prepare the sample as a film or KBr pellet and analyze characteristic absorption peaks (e.g., P=O stretch at ~1250 cm⁻¹, P-O-C at ~1020 cm⁻¹) for structural confirmation and authenticity verification. |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) or Inductively Coupled Plasma Mass Spectrometry (ICP-MS) | After sample digestion, determine concentrations of heavy metals such as lead, arsenic, cadmium, and mercury to ensure compliance with safety standards (e.g., pharmaceutical or environmental requirements). |
Technical Specifications of Diphenyl phosphate
| Test Item | Specification |
|---|---|
| Appearance | White to almost white crystalline powder |
| Purity | >=98.0% (HPLC) |
| Water Content (KF) | <=0.5% |
| Melting Point | 76-80°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.1% |
| Acid Value (mg KOH/g) | <=1.0 |
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 Diphenyl phosphate
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NMR Spectra of Diphenyl phosphate
Packaging of Diphenyl phosphate
Industrial Diphenyl phosphate 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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