Diphenylphosphinic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 1707-03-5 |
| Product name | Diphenylphosphinic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial GradeMaterial GradeElectronic 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 Diphenylphosphinic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Diphenylphosphinic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Diphenylphosphinic acid
| Industry | Application | Process |
|---|---|---|
| Flame Retardants | Flame retardant additive for polymeric materials such as plastics and rubber | Blending or surface treatment |
| Chemical Synthesis | Intermediate for synthesizing organophosphorus compounds | Esterification, condensation, and related reactions |
| Electronic Materials | Flame-retardant modification of electronic encapsulation materials | Blending or chemical modification |
| Coatings | Added to fire-retardant coatings to enhance flame resistance | Dispersion and mixing |
| Adhesives | Flame-retardant component in high-temperature-resistant adhesives | Blending or in-situ polymerization |
Manufacturing Quality Control of Diphenylphosphinic acid
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Acid-Base Titration with NaOH | Neutralization of acidic phosphate protons using standardized sodium hydroxide solution with phenolphthalein or potentiometric endpoint detection. |
| Moisture Content | Karl Fischer Titration | Quantitative determination of water via iodine-sulfur dioxide reaction in a methanol-based reagent system. |
| Acid Value | Acid-Base Titration with KOH | Titration of free acidic groups using standardized potassium hydroxide in ethanol, expressed as mg KOH/g sample. |
| Color | Visual Comparison or Hazen (APHA) Scale | Comparison of sample solution color against platinum-cobalt standard solutions under controlled lighting. |
| Residue on Ignition | Gravimetric Analysis | Heating sample to 750-800 C to combust organic matter, then weighing inorganic residue as percentage of original mass. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantification of trace metal impurities after acid digestion and atomization, using element-specific hollow cathode lamp. |
| Chloride Content | Potentiometric Titration with AgNO3 | Precipitation titration using silver nitrate with silver electrode detection of chloride ion endpoint. |
| Sulfated Ash | Gravimetric Analysis | Oxidation of organic matrix with sulfuric acid followed by high-temperature ignition and residue weighing. |
| Melting Point | Capillary Melting Point Apparatus | Determination of solid-to-liquid phase transition temperature using calibrated capillary tube method per USP/Ph.Eur. |
| Organic Volatile Impurities | Gas Chromatography (GC-FID) | Separation and quantification of volatile organic contaminants using flame ionization detection with appropriate column and calibration standards. |
| Iron (Fe) Content | ICP-OES | Multi-element detection of dissolved iron after acid digestion via inductively coupled plasma optical emission spectroscopy. |
| Specific Optical Rotation | Polarimetry | Measurement of rotation angle of plane-polarized light passing through a solution of chiral compound at specified concentration and path length. |
Technical Specifications of Diphenylphosphinic acid
| Test Item | Specification |
|---|---|
| Appearance | Yellow solid |
| Purity | >=98.0% (HPLC) |
| Melting Point | 78–82°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
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 Diphenylphosphinic acid
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| Lot/Batch Number | *Required fields | |
NMR Spectra of Diphenylphosphinic acid
Packaging of Diphenylphosphinic acid
Industrial Diphenylphosphinic acid 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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