Diphenic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 482-05-3 |
| Product name | Diphenic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical 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) |
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Documents We Provide for Diphenic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Diphenic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Diphenic acid
| Industry | Application | Process |
|---|---|---|
| Chemicals | Synthesis of polyesters and polyamides | Used as a dicarboxylic acid monomer in condensation polymerization to produce high-performance polymers |
| Materials | Intermediate for liquid crystal materials | Applied in synthesizing rigid biphenyl units within liquid crystal molecular structures |
| Pharmaceuticals | Organic synthesis intermediate | Employed in constructing drug molecules to prepare compounds with specific biological activity |
| Dyes | Synthesis of functional dyes | Used as an aromatic acid component in developing high-temperature-resistant and highly stable dyes |
Manufacturing Quality Control of Diphenic acid
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Acid-Base Titration with NaOH | Quantifies carboxylic acid groups by neutralization with standardized sodium hydroxide solution using phenolphthalein or potentiometric endpoint detection. |
| Moisture Content | Karl Fischer Titration | Measures water content based on the stoichiometric reaction of iodine with sulfur dioxide and water in a methanol-based reagent. |
| Heavy Metals | ICP-OES | Determines trace metal impurities (e.g., Pb, Cd, Hg, As) by atomizing the sample and measuring element-specific emission intensities. |
| Residue on Ignition | Gravimetric Analysis | Measures non-volatile inorganic impurities by ignition at 700-800 C and weighing the residual ash. |
| Chloride Content | Potentiometric Titration with AgNO3 | Quantifies chloride ions via precipitation titration with silver nitrate using a silver indicator electrode. |
| Sulfated Ash | Gravimetric Analysis | Determines inorganic residue after combustion with sulfuric acid pretreatment followed by high-temperature ignition and weighing. |
| Organic Impurities (Related Substances) | HPLC-UV | Separates and quantifies structurally related impurities using reversed-phase chromatography and UV detection at 254 nm. |
| Melting Point | Capillary Melting Point Determination | Measures temperature range at which solid transitions to liquid using calibrated capillary apparatus under controlled heating rate. |
| Appearance | Visual Inspection | Assesses physical state, color, and presence of foreign particles against established reference standards under controlled lighting. |
| Particle Size Distribution | Laser Diffraction | Determines size distribution of solid particles by analyzing angular variation in laser light scattering intensity. |
| Loss on Drying | Thermogravimetric Analysis (TGA) | Measures mass loss upon heating under controlled nitrogen or air atmosphere to quantify volatile components up to 105 C. |
| Specific Optical Rotation | Polarimetry | Measures rotation of plane-polarized light caused by chiral impurities or enantiomeric excess in solution using sodium D-line source. |
Technical Specifications of Diphenic acid
| Test Item | Specification |
|---|---|
| Appearance | Pale-yellow crystalline solid |
| Purity | >=98.0% (HPLC) |
| Melting Point | 224-228°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 Diphenic acid
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NMR Spectra of Diphenic acid
Packaging of Diphenic acid
Industrial Diphenic 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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