DIPHENYL PHOSPHITE Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 4712-55-4 |
| Product name | DIPHENYL PHOSPHITE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial 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) |
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Documents We Provide for DIPHENYL PHOSPHITE
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk DIPHENYL PHOSPHITE Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of DIPHENYL PHOSPHITE
| Industry | Application | Process |
|---|---|---|
| Plastics Industry | Co-heat stabilizer for polyvinyl chloride (PVC) and vinyl chloride copolymers | Used in ester exchange or direct compounding with primary stabilizers (e.g., Ca/Zn or Ba/Zn stabilizers) to scavenge hydrogen chloride released during degradation and inhibit long-term thermal aging |
| Plastics Industry | Synthetic intermediate for antioxidants and light stabilizers (e.g., antioxidants, UV absorbers) | Serves as an organic synthetic intermediate, incorporated into polymer structures via polymerization or modification reactions, or added directly to polymer systems |
| Agrochemical Industry | Synthetic intermediate for organophosphorus pesticides and insecticides | Employed in Arbuzov or Michael addition reactions to construct P–C or P–O–C bonds |
| Pharmaceutical Industry | Synthetic intermediate for drug synthesis (e.g., construction of phosphorus-containing drug molecules or as a phosphorylation reagent) | Utilized in drug molecule modification or synthesis pathways to introduce phosphite functional groups via its phosphylating properties |
| Rubber Industry | Antidegradant or auxiliary additive for synthetic rubber | Participates in the chemical synthesis of rubber additives to enhance the heat resistance and aging resistance of rubber products |
Manufacturing Quality Control of DIPHENYL PHOSPHITE
| 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 internal or external standard. |
| Acidity (as H3PO3) | Acid-Base Titration with NaOH | Neutralizes acidic impurities using standardized sodium hydroxide solution and phenolphthalein indicator. |
| Water Content | Karl Fischer Coulometric Titration | Electrochemically determines water via iodine generation proportional to water content in sample. |
| Color (APHA) | Visual Comparison or Spectrophotometric Measurement at 455 nm | Compares sample color intensity against platinum-cobalt standard scale or measures absorbance at specified wavelength. |
| Density at 20 C | Digital Density Meter | Measures mass per unit volume using oscillating U-tube principle calibrated with air/water standards. |
| Refractive Index at 20 C | Refractometry | Determines ratio of light velocity in air vs. sample using critical angle measurement of monochromatic light. |
| Residue on Ignition | Gravimetric Analysis after High-Temperature Ashing | Weighs non-volatile inorganic residue remaining after combustion at 700-800 C. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantifies metal ion concentration by measuring absorption of element-specific hollow cathode lamp radiation. |
| Chloride Content | Potentiometric Titration with AgNO3 | Detects endpoint via silver-silver chloride electrode potential shift during silver nitrate titration. |
| Phosphoric Acid (H3PO4) Impurity | Ion Chromatography (IC) with Conductivity Detection | Separates and quantifies anionic phosphates based on retention time and conductivity response. |
| Diethyl Phosphite Impurity | Gas Chromatography-Mass Spectrometry (GC-MS) | Identifies and quantifies volatile organic impurities using retention time and characteristic mass fragmentation patterns. |
| Non-Volatile Residue | Evaporation and Gravimetric Weighing | Determines weight of residue after controlled evaporation of sample under nitrogen at 105 C. |
Technical Specifications of DIPHENYL PHOSPHITE
| Test Item | Specification |
|---|---|
| Appearance | Colorless to almost colorless clear liquid |
| Purity | >=98.5% (by GC) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.0% |
| Single Impurity | <=0.3% |
| Refractive Index (n20/D) | 1.575–1.585 |
| Relative Density (20°C/25°C) | 1.180–1.195 g/cm³ |
| Acid Value (mg KOH/g) | <=0.5 |
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 PHOSPHITE
| CAS/Product ID | *Required fields | |
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NMR Spectra of DIPHENYL PHOSPHITE
Packaging of DIPHENYL PHOSPHITE
Industrial DIPHENYL PHOSPHITE 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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